CHAPTER-1
Results Reporter
Out of 17 questions, you answered 8 correctly, for a final grade of 47%.
8 correct (47%) 9 incorrect (53%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT In the original ARPANET, _______ were directly connected together. A)IMPs
B)host computers C)networks D)routers
2INCORRECT _______ was formed to connect universities with no defense ties. A)ARPANET
B)CSNET C)NSFNET D)ANSNET 3INCORRECT This was the first network.
A)CSNET B)NSFNET C)ANSNET D)ARPANET
4INCORRECT Which organization has authority over interstate and international commerce in the communications field?
A)ITU-T B)IEEE C)FCC D)ISOC
5CORRECT _______ are special-interest groups that quickly test, evaluate, and standardize new technologies.
B)Regulatory agencies C)Standards organizations D)All of the choices are correct
6INCORRECT Which agency developed standards for physical connection interfaces and electronic signaling specifications?
A)EIA B)ITU-T C)ANSI D)ISO
7CORRECT _______ is the protocol suite for the current Internet. A)TCP/IP
B)NCP C)UNIX D)ACM
8CORRECT A version of the _______ operating system included TCP/IP. A)DARPA
B)NCP C)UNIX D)ACM
9INCORRECT The _______ oversees the IETF and the IRTF. A)ISOC
B)IAB C)IANA D)NIC
10CORRECT The _______ maintains and supports IAB. A)ISOC
B)IETF C)IANA D)ICANN
11INCORRECT _______ is the precursor to ICANN. A)ISOC
B)IETF C)IANA D)NIC
which they are presented. A)Semantics B)Syntax C)Timing
D)All of the choices are correct
13CORRECT ________ defines how a particular pattern to be interpreted, and what action is to be taken based on that interpretation.
A)Semantics B)Syntax C)Timing
D)None of the choices are correct
14CORRECT _______ refers to two characteristics: when data should be sent and how fast it can be sent.
A)Semantics B)Syntax C)Timing
D)None of the choices are correct
15INCORRECT An RFC, during its lifetime, falls into one of _______ maturity levels. A)5
B)2 C)4
D)None of the choices are correct
16INCORRECT A proposed standard is elevated to ________ standard status after at least two successful tries.
A)informational B)historic C)draft
D)None of the choices are correct
17CORRECT An RFC is labeled ________ if it must be implemented by all Internet systems. A)required
B)elective C)recommended
CHAPTER-2
Results Reporter
Out of 20 questions, you answered 10 correctly, for a final grade of 50%.
10 correct (50%) 10 incorrect (50%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a . 1CORRECT Why was the OSI model developed?
A)manufacturers disliked the TCP/IP protocol suite B)the rate of data transfer was increasing exponentially C)standards were needed to allow any two systems to
communicate
D)None of the choices are correct
2CORRECT The _______ model shows how the network functions of a computer ought to be organized.
A)CCITT B)OSI C)ISO D)ANSI
3CORRECT The physical layer is concerned with the movement of _______ over the physical medium.
A)programs B)dialogs C)protocols D)bits
4CORRECT The OSI model consists of _______ layers. A)three
B)five C)seven D)eight
5INCORRECT In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______.
A)added B)removed C)rearranged D)modified
6INCORRECT In the OSI model, when data is transmitted from device A to device B, the header from A's layer 5 is read by B's _______ layer.
A)physical B)transport C)session D)presentation
7INCORRECT In the OSI model, which layer functions as a liaison between user support layers and network support layers?
A)network layer B)physical layer C)transport layer D)session layer
8CORRECT In the OSI model, what is the main function of the transport layer? A)node-to-node delivery
B)process-to-process message delivery C)synchronization
D)updating and maintenance of routing tables
9CORRECT In the OSI model, encryption and decryption are functions of the ________ layer.
A)transport B)session C)presentation D)application
10INCORRECT In the OSI model, which of the following is an application layer service? A)network virtual terminal
B)file transfer, access, and management C)mail service
D)All of the choices are correct
11CORRECT When a host on network A sends a message to a host on network B, which address does the router look at?
B)logical C)physical
D)None of the choices are correct
12INCORRECT The ______ layer is responsible for moving frames from one hop (node) to the next.
A)physical B)data link C)transport
D)None of the choices are correct
13INCORRECT The ______ layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver.
A)physical B)data link C)network
D)None of the choices are correct
14CORRECT The_________ layer is responsible for the delivery of a message from one process to another.
A)physical B)transport C)network
D)None of the choices are correct 15INCORRECT The Internetworking Protocol (IP) is a ________ protocol.
A)reliable
B)connection-oriented
C)reliable and connection-oriented D)None of the choices are correct
16CORRECT __________ provides full transport layer services to applications. A)TCP
B)UDP C)ARP
D)None of the choices are correct
17INCORRECT The ________ address, also known as the link address, is the address of a node as defined by its LAN or WAN.
A)port B)physical C)logical
D)None of the choices are correct
18CORRECT Ethernet uses a ______ physical address that is imprinted on the network interface card (NIC).
A)32-bit B)64-bit C)6-byte
D)None of the choices are correct
19INCORRECT Which of the following can be an Ethernet physical address? A)01:02:01:2C:4B
B)07:01:02:01:2C:4B:2C C)07:01:02:01:2C:4B
D)None of the choices are correct 20INCORRECT A port address in TCP/IP is ______ bits long.
A)32 B)48 C)16
D)None of the choices are correct
CHAPTER-3
Results Reporter
Out of 15 questions, you answered 4 correctly, for a final grade of 27%.
4 correct (27%) 11 incorrect (73%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a . 1CORRECT Frame Relay operates in the _______.
A)physical layer B)data link layer
C)physical and data link layers D)None of the choices are correct
2INCORRECT Which ATM layer has a 53-byte cell as an end product? A)physical
B)ATM
C)application adaptation
D)None of the choices are correct 3INCORRECT The IP protocol uses the _______ sublayer.
A)AAL1 B)AAL2 C)AAL5
D)None of the choices are correct 4INCORRECT Repeaters function in the _______ layer.
A)physical B)data link C)network
D)None of the choices are correct 5CORRECT Bridges function in the _______ layers.
A)physical and data link B)data link and network C)network and transport
D)None of the choices are correct
6INCORRECT A bridge has access to the _______ address of a station on the same network. A)logical
B)physical C)port
D)None of the choices are correct 7INCORRECT Routers function in the _______ layers.
A)physical and data link
B)physical, data link, and network C)data link and network
D)None of the choices are correct
8INCORRECT _______ has a higher transmission rate in the downstream direction than in the upstream direction.
A)VDSL B)ADSL C)SDSL
D)None of the choices are correct
9INCORRECT _______ is suitable for businesses that require comparable upstream and downstream data rates.
A)VDSL B)ADSL C)SDSL
D)None of the choices are correct
10INCORRECT _______ was designed as an alternative to the T-1 line. A)VDSL
B)ADSL C)HDSL
D)None of the choices are correct 11INCORRECT In an ESS the _______ station is mobile.
A)AP B)server C)BSS
D)None of the choices are correct
12CORRECT In an ESS the _______ stations are part of a wired LAN. A)AP
B)server C)BSS
D)None of the choices are correct 13INCORRECT SONET is a standard for _______ networks.
A)twisted-pair cable B)coaxial cable C)fiber-optic cable
D)None of the choices are correct 14CORRECT SONET is an acronym for _______ Network.
A)Synchronous Optical B)Standard Optical C)Symmetrical Open
D)None of the choices are correct 15INCORRECT PPP is a _______ layer protocol.
A)physical B)data link
C)physical and data link
D)None of the choices are correct
Chapter-4
Results Reporter
Out of 10 questions, you answered 4 correctly, for a final grade of 40%.
4 correct (40%) 6 incorrect (60%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT When the Internet started, it was decided to make the network layer a _______ service to make it simple.
A)connection-oriented B)connectionless C)virtual
D)None of the choices are correct
2INCORRECT In a connectionless service, each packet is forwarded based on the ________. A)source address
B)destination address C)label
D)None of the choices are correct
3INCORRECT In a connection-oriented service, each packet is forwarded based on the ________.
A)source address B)destination address C)label
4INCORRECT In a _______ service, there is a relation between all packets belonging to a message.
A)connectionless B)virtual
C)connection-oriented
D)None of the choices are correct
5CORRECT In _________, the whole packet is sent from the source to the destination without being divided into packets.
A)circuit-switching B)packet-switching C)cell-switching
D)None of the choices are correct
6CORRECT In _________, the message is first divided into manageable packets before being sent.
A)circuit-switching B)packet-switching C)cell-switching
D)None of the choices are correct
7INCORRECT _________ control means including a mechanism for detecting corrupted, lost, or duplicate packets.
A)flow B)error C)congestion
D)None of the choices are correct
8CORRECT _________ control means regulating the amount of data a source can send without overwhelming the destination.
A)flow B)error C)congestion
D)None of the choices are correct
9INCORRECT ______ control in a network means handling a situation in which too many packets are present in an area of the Internet.
A)flow B)error C)congestion
10CORRECT A ______ packet is a special packet that can be sent from a router to the sender when the router encounters a congestion.
A)choke B)data C)control
D)None of the choices are correct
CHAPTER-5
Results Reporter
Out of 41 questions, you answered 15 correctly, for a final grade of 37%.
15 correct (37%) 26 incorrect (63%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a . 1CORRECT An IPv4 address is __________ bits long.
A)16 B)128 C)32
D)None of the choices are correct
2INCORRECT An IPv4 address is normally represented in base ____ or dotted-decimal notation.
A)16 B)265 C)10
D)None of the choices are correct
3INCORRECT In classful addressing, the IPv4 address space is divided into __________ classes.
A)3 B)4 C)5
D)None of the choices are correct 4CORRECT In class A, the netid is between ______________.
A)0 to 127 B)128 to 191 C)192 to 223
D)None of the choices are correct 5CORRECT In class B, the netid is between ______________.
A)0 to 127 B)128 to 191 C)192 to 223
D)None of the choices are correct 6CORRECT In class C, the netid is between ______________.
A)0 to 127 B)128 to 191 C)192 to 223
D)None of the choices are correct 7CORRECT The default mask for class A is ______________.
A)255.255.0.0 B)255.0.0.0. C)255.255.255.0
D)None of the choices are correct 8CORRECT The default mask for class B is ______________.
A)255.255.0.0 B)255.0.0.0. C)255.255.255.0
D)None of the choices are correct 9CORRECT The default mask for class C is ______________.
A)255.255.0.0 B)255.0.0.0. C)255.255.255.0
D)None of the choices are correct 10INCORRECT The default mask for class D is ______________.
A)255.255.0.0 B)255.0.0.0. C)255.255.255.0
D)None of the choices are correct 11INCORRECT The default mask for class E is ______________.
A)255.255.0.0 B)255.0.0.0. C)255.255.255.0
D)None of the choices are correct
12INCORRECT In classless addressing, __________ is assigned to a organization. A)a variable-length block
B)a fixed-length
C)a fixed number of blocks D)None of the choices are correct
13INCORRECT The number of addresses assigned to an organization in classless addressing _______.
A)can be any number B)must be a multiple of 256 C)must be a power of 2
D)None of the choices are correct
14INCORRECT The first address assigned to an organization in classless addressing _______. A)must be a power of 4
B)must be evenly divisible by the number of addresses C)must belong to one of the A, B, or C classes
D)None of the choices are correct
15CORRECT Which address could be the beginning address of a block of 32 classless addresses?
A)2.4.6.5 B)2.4.6.16 C)2.4.6.64
D)None of the choices are correct
16INCORRECT Which address could be the beginning address of a block of 16 classless addresses?
A)2.4.6.5 B)2.4.6.15 C)2.4.6.62
D)None of the choices are correct
17INCORRECT Which address could be the beginning address of a block of 256 classless addresses?
B)2.4.6.15 C)2.4.6.0
D)None of the choices are correct
18CORRECT What is the first address of a block of classless addresses if one of the addresses is 12.2.2.76/27?
A)12.2.2.0 B)12.2.2.32 C)12.2.2.64
D)None of the choices are correct
19INCORRECT What is the first address of a block of classless addresses if one of the addresses is 12.2.2.76/10?
A)12.0.0.0 B)12.2.0.0 C)12.2.2.2
D)None of the choices are correct
20INCORRECT What is the first address of a block of classless addresses if one of the addresses is 12.2.2.127/28?
A)12.2.2.0 B)12.2.2.96 C)12.2.2.112
D)None of the choices are correct
21CORRECT Find the number of addresses in a block of classless addresses if one of the addresses is 12.2.2.7/24.
A)32 B)64 C)256
D)None of the choices are correct
22INCORRECT Find the number of addresses in a block of classless addresses if one of the addresses is 12.2.2.7/30.
A)2 B)4 C)8
D)None of the choices are correct
23INCORRECT What is the last address of a block of classless addresses if one of the addresses is 12.2.2.127/28?
B)12.2.2.112 C)12.2.2.127
D)None of the choices are correct
24INCORRECT What is the last address of a block of classless addresses if one of the addresses is 12.2.2.6/30?
A)12.2.2.2 B)12.2.2.6 C)12.2.2.7
D)None of the choices are correct
25CORRECT In fixed-length subnetting, the number of subnets must _______. A)be a power of 2
B)be a multiple of 128 C)be divisible by 128
D)None of the choices are correct
26INCORRECT An organization is granted a block; one address is 2.2.2.64/20. The organization needs 10 subnets. What is the subnet prefix length?
A)/20 B)/24 C)/25
D)None of the choices are correct
27INCORRECT An organization is granted a block; one address is 2.2.2.64/25. If the subnet prefix length is /28, what is the maximum number of subnets?
A)2 B)4 C)8
D)None of the choices are correct
28INCORRECT An organization is granted a block of classless addresses with the starting address 199.34.76.64/28. How many addresses are granted?
A)8 B)16 C)32
D)None of the choices are correct
29CORRECT An organization is granted a block of classless addresses with the starting address 199.34.76.128/29. How many addresses are granted?
A)8 B)16
C)32
D)None of the choices are correct
30INCORRECT An organization is granted a block of classless addresses with the starting address 199.34.32.0/27. How many addresses are granted?
A)8 B)16 C)32
D)None of the choices are correct
31INCORRECT What is the default mask for class A in CIDR notation? A)/9
B)/8 C)/16
D)None of the choices are correct
32INCORRECT What is the default mask for class B in CIDR notation? A)/9
B)/8 C)/16
D)None of the choices are correct
33CORRECT What is the default mask for class C in CIDR notation? A)/24
B)/8 C)/16
D)None of the choices are correct
34INCORRECT In ________ addressing, when an address is given, we can find the beginning address and the range of addresses.
A)classless B)classful
C)both classless and classful D)None of the choices are correct
35INCORRECT In classless addressing, the ______ is another name for the common part of the address range.
A)suffix B)prefix C)netid
36CORRECT In classless addressing, the _______ is the varying part (similar to the hostid). A)suffix
B)prefix C)hostid
D)None of the choices are correct
37INCORRECT In classless addressing, the prefix length defines the _____________. A)netid
B)hostid C)mask
D)None of the choices are correct
38INCORRECT In a block, the prefix length is /22; what is the mask? A)255.255.255.0
B)255.255.252.0 C)255.255.0.0
D)None of the choices are correct
39CORRECT In a block, the prefix length is /15; what is the mask? A)255.254.0.0
B)255.255.255.0 C)255.255.255.128
D)None of the choices are correct
40INCORRECT In a block, the mask is 255.255.192.0; what is the prefix length? A)/20
B)/28 C)/18
D)None of the choices are correct
41INCORRECT In a block, the mask is 255.255.255.224; what is the prefix length? A)/20
B)/19 C)/20
D)None of the choices are correct
Results Reporter
Out of 21 questions, you answered 7 correctly, for a final grade of 33%.
7 correct (33%) 14 incorrect (67%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT In _______ delivery, both the deliverer of the IP packet and the destination are on the same network.
A)a connectionless B)a direct
C)an indirect
D)None of the choices are correct
2INCORRECT In _______ delivery, the deliverer of the IP packet and the destination are on different networks.
A)a connection-oriented B)a direct
C)an indirect
D)None of the choices are correct
3INCORRECT In classful addressing, when a direct delivery is made, both the deliverer and receiver have the same _______.
A)IP address B)hostid C)netid
D)None of the choices are correct
4INCORRECT In classful addressing, when an indirect delivery is made, the deliverer and receiver have _______.
A)the same IP address B)different netids C)the same netid
D)None of the choices are correct
5INCORRECT In _______ forwarding, the full IP address of a destination is given in the routing table.
B)network-specific C)host-specific D)default
6INCORRECT In _______ forwarding, the mask and destination addresses are both 0.0.0.0 in the routing table.
A)next-hop
B)network-specific C)host-specific D)default
7INCORRECT In _______ forwarding, the destination address is a network address in the routing table.
A)next-hop
B)network-specific C)host-specific D)default
8CORRECT In _______ forwarding, the routing table holds the address of just the next hop instead of complete route information.
A)next-hop
B)network-specific C)host-specific D)default
9CORRECT In ________ addressing, a typical forwarding module can be designed using three tables, one for each unicast class (A, B, C).
A)classful B)classless
C)classful and classless
D)None of the choices are correct
10INCORRECT In classful addressing, the class of the address can be found by shifting the copy of the address ____ bits to the right.
A)32 B)16 C)28
D)None of the choices are correct
11CORRECT In classful addressing we need a routing table with at least ______ columns. A)4
C)8
D)None of the choices are correct
12CORRECT In classless addressing, we need a routing table with at least _______ columns. A)4
B)3 C)8
D)None of the choices are correct
13INCORRECT The idea of address aggregation was designed to alleviate the increase in routing table entries when using ________.
A)classful addressing B)classless addressing
C)classful addressing and classless addressing D)None of the choices are correct
14CORRECT The principle of ________ states that the routing table is sorted from the longest mask to the shortest mask.
A)first mask matching B)shortest mask matching C)longest mask matching
D)None of the choices are correct
15INCORRECT The use of hierarchy in routing tables can ________ the size of the routing tables.
A)reduce B)increase
C)reduce and increase
D)None of the choices are correct
16INCORRECT _______ deals with the issues of creating and maintaining routing tables. A)Forwarding
B)Routing C)Directing
D)None of the choices are correct
17INCORRECT A _______ routing table contains information entered manually. A)static
B)dynamic C)hierarchical
18CORRECT A _______ routing table is updated periodically using one of the dynamic routing protocols.
A)static B)dynamic C)hierarchical
D)None of the choices are correct
19CORRECT The input and output ports of a router perform the ________ layer functions of the router.
A)physical and data link B)network
C)transport
D)None of the choices are correct
20INCORRECT The routing processor of a router performs the ________ layer functions of the router.
A)physical and data link B)network
C)transport
D)None of the choices are correct
21INCORRECT The task of moving the packet from the input queue to the output queue in a router is done by _________.
A)input and output ports B)routing processor C)switching fabrics
D)None of the choices are correct
Results Reporter
Out of 29 questions, you answered 7 correctly, for a final grade of 24%.
7 correct (24%) 22 incorrect (76%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT The ________ protocol is the transmission mechanism used by the TCP/IP suite.
A)ARP B)IP C)RARP
D)None of the choices are correct 2INCORRECT IP is _________ datagram protocol.
A)unreliable B)connectionless
C)both unreliable and connectionless D)None of the choices are correct
3INCORRECT
The term ________ means that IP provides no error checking or tracking. IP assumes the unreliability of the underlying layers and does its best to get a transmission through to its destination, but with no guarantees.
A)reliable delivery
B)connection-oriented delivery C)best-effort delivery
D)None of the choices are correct
4INCORRECT A best-effort delivery service such as IP includes _______. A)error checking
B)error correction
C)datagram acknowledgment D)None of the choices are correct 5INCORRECT An HLEN value of decimal 10 means _______.
A)there are 10 bytes of options B)there are 40 bytes of options C)there are 40 bytes in the header
D)None of the choices are correct
6INCORRECT If the fragment offset has a value of 100, it means that _______. A)the datagram has not been fragmented
B)the datagram is 100 bytes in size
C)the first byte of the datagram is byte 800 D)None of the choices are correct
7INCORRECT What is needed to determine the number of the last byte of a fragment? A)offset number
B)total length
C)both offset number and the total length D)None of the choices are correct
8CORRECT The IP header size _______.
A)is 20 to 60 bytes long B)is 20 bytes long C)is 60 bytes long
D)None of the choices are correct 9INCORRECT Packets in the IP layer are called _________.
A)segments B)datagrams C)frames
D)None of the choices are correct
10CORRECT The total length field defines the total length of the datagram _________. A)including the header
B)excluding the header C)header and option length D)None of the choices are correct
11INCORRECT When a datagram is encapsulated in a frame, the total size of the datagram must be less than the _______.
A)MUT B)MAT C)MTU
D)None of the choices are correct
12INCORRECT Which IP option is used if exactly four specific routers are to be visited by the datagram?
B)strict source route C)loose source route
D)None of the choices are correct
13CORRECT For the timestamp option, a flag value of _______ means that each visited router adds only the timestamp in the provided field.
A)0 B)1 C)2
D)None of the choices are correct
14INCORRECT The IP header field formerly known as the service type field is now called the _______ field.
A)IETF B)checksum
C)differentiated services
D)None of the choices are correct
15INCORRECT The _______ module takes fragments of a message and puts them back in order.
A)processing B)fragmentation C)reassembly
D)None of the choices are correct
16INCORRECT The _______ module sends out an IP packet, the next-hop address, and interface information.
A)processing B)forwarding C)fragmentation
D)None of the choices are correct
17CORRECT The _______ module discards datagrams with a TTL value of zero. A)processing
B)forwarding C)fragmentation
D)None of the choices are correct
18INCORRECT The output of the _______ module is an IP packet destined for an upper-layer protocol.
A)processing B)forwarding
C)reassembly
D)None of the choices are correct
19INCORRECT The _______ module consults the MTU table to determine the packet size necessary for transmission.
A)processing B)forwarding C)fragmentation
D)None of the choices are correct
20CORRECT The value of the ________ subfield in an option controls the presence of the option in fragmentation.
A)copy B)class C)number
D)None of the choices are correct
21INCORRECT The value of the ________ subfield defines the general purpose of an option. A)copy
B)class C)number
D)None of the choices are correct
22INCORRECT The value of the ________ subfield defines the types of an option. A)copy
B)class C)number
D)None of the choices are correct
23INCORRECT Only ______ end of option option can be used in a datagram. A)two
B)three C)one
D)None of the choices are correct
24CORRECT When we use IP over ATM, only the ________ cell carry(ies) the 8-byte trailer added to the IP datagram.
A)last B)first
C)last and first
25INCORRECT When we use IP over ATM, padding can be added only to the _____ or the _______.
A)first cell; last cell
B)last two cells; last three cells C)last cell; last two cells
D)None of the choices are correct
26INCORRECT To find the physical address of the exiting-point router, ATM uses the services of _________.
A)ARP B)IP
C)ATMARP
D)None of the choices are correct
27INCORRECT The inverse request and inverse reply messages can bind the physical address to an IP address in a(n) _______ situation.
A)SVC B)PVC
C)SVC and PVC
D)None of the choices are correct
28CORRECT The request and reply message can be used to bind a physical address to an IP address in a(n) _______ situation.
A)SVC B)PVC
C)SVC and PVC
D)None of the choices are correct
29INCORRECT __________ allows an ATM network to be divided into several logical subnets. A)LAS
B)LAN C)LIS
D)None of the choices are correct
CHPATER-8
Out of 13 questions, you answered 0 correctly, for a final grade of 0%.
0 correct (0%) 13 incorrect (100%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT A _______ address is an internetwork address with universal jurisdiction. A)physical
B)logical C)port
D)None of the choices are correct
2INCORRECT The logical addresses in the TCP/IP protocol suite are called _______ addresses.
A)port B)IP C)Email
D)None of the choices are correct
3INCORRECT A ________ is a local address. Its jurisdiction is over a local network. A)physical
B)logical C)port
D)None of the choices are correct
4INCORRECT
If the sender is a host and wants to send a packet to another host on the same network, the logical address that must be mapped to a physical address is ______.
A)the destination IP address in the datagram header B)the IP address of the router found in the routing table C)the source IP address
D)None of the choices are correct
5INCORRECT
If the sender is a host and wants to send a packet to another host on another network, the logical address that must be mapped to a physical address is ______.
A)the destination IP address in the datagram header B)the IP address of the router found in the routing table C)the source IP address
6INCORRECT
The sender is a router that has received a datagram destined for a host on another network. The logical address that must be mapped to a physical address is ______.
A)the destination IP address in the datagram header B)the IP address of the router found in the routing table C)the source IP address
D)None of the choices are correct
7INCORRECT
The sender is a router that has received a datagram destined for a host in the same network. The logical address that must be mapped to a physical address is ______.
A)the destination IP address in the datagram header B)the IP address of the router found in the routing table C)source IP address
D)None of the choices are correct
8INCORRECT In _______, a table associating a logical address with a physical address is updated manually.
A)static mapping B)dynamic mapping C)physical mapping
D)None of the choices are correct
9INCORRECT The target hardware address on an Ethernet is _______ in an ARP request. A)0x000000000000
B)0.0.0.0 C)variable
D)class dependent 10INCORRECT An ARP reply is normally _______.
A)broadcast B)multicast C)unicast
D)None of the choices are correct 11INCORRECT An ARP request is normally _______.
A)broadcast B)multicast C)unicast
12INCORRECT A technique called ______ is used to create a subnetting effect. A)ARP
B)RARP C)proxy ARP
D)None of the choices are correct 13INCORRECT A _______ is an ARP that acts on behalf of a set of hosts.
A)ARP B)RARP C)proxy ARP
D)None of the choices are correct
CHAPTER-9
Results Reporter
Out of 19 questions, you answered 8 correctly, for a final grade of 42%.
8 correct (42%) 11 incorrect (58%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a . 1CORRECT ICMP is a _________ layer protocol.
A)data link B)transport C)network
D)None of the choices are correct
2CORRECT An ICMP message has _____ header and a variable-size data section. A)a 16-byte
B)a 32-byte C)an 8-byte
D)None of the choices are correct
3INCORRECT Which of the following is true about ICMP messages?
error message.
B)An ICMP error message may be generated for each fragment.
C)An ICMP error message may be generated for a multicast datagram.
D)none is true
4INCORRECT Which of the following is true about ICMP messages?
A)An ICMP error message may be generated for an ICMP error message.
B)An ICMP error message may be generated only for the first fragment.
C)An ICMP error message may be generated for a multicast datagram.
D)none is true
5CORRECT Which of the following is true about ICMP messages?
A)An ICMP error message may be generated for an ICMP error message.
B)An ICMP error message may be generated only for each fragment.
C)No ICMP error message will be generated for a datagram having a special address such as 127.0.0.0 or 0.0.0.0. D)none is true
6INCORRECT If a host needs to synchronize its clock with another host, it sends a _______ message.
A)timestamp-request B)source-quench C)router-advertisement
D)None of the choices are correct
7INCORRECT The purpose of echo request and echo reply is to _______. A)report errors
B)check node-to-node communication C)check packet lifetime
D)None of the choices are correct
8INCORRECT In error reporting the encapsulated ICMP packet goes to _______. A)the original sender
B)the receiver C)a router
D)None of the choices are correct
9INCORRECT What field uniquely identifies the kind of ICMP message (for example, echo reply versus echo request)?
A)type B)code C)option ID
D)None of the choices are correct
10INCORRECT When the hop-count field reaches zero and the destination has not been reached, a _______ error message is sent.
A)destination-unreachable B)time-exceeded
C)parameter-problem
D)None of the choices are correct
11INCORRECT When all fragments of a message have not been received within the designated amount of time, a _______ error message is sent.
A)source-quench B)time-exceeded C)parameter-problem
D)None of the choices are correct
12INCORRECT Errors in the header or option fields of an IP datagram require a _______ error message.
A)parameter-problem B)source-quench C)router-solicitation
D)None of the choices are correct
13CORRECT A _______ can learn about network _______ by sending out a router-solicitation packet.
A)router, routers B)router, hosts C)host, routers
D)None of the choices are correct 14CORRECT Who can send ICMP error-reporting messages?
A)routers
B)destination hosts
C)routers or destination hosts D)None of the choices are correct
15CORRECT One method to alert a source host of congestion is the _______ message.
A)redirection B)echo-request C)source-quench
D)None of the choices are correct
16CORRECT A time-exceeded message is generated if _______.
A)the round-trip time between hosts is close to zero B)fragments of a message do not arrive within a set time C)the round-trip time between hosts is close to zero and fragments of a message do not arrive within a set time D)None of the choices are correct
17INCORRECT To determine whether or not a node is reachable, _______ message can be sent.
A)an echo-reply B)an echo-request C)a redirection
D)None of the choices are correct
18CORRECT In calculating the time difference between two clocks, a negative value indicates _______.
A)an invalid calculation
B)the source clock lags behind the destination clock C)the destination clock lags behind the source clock D)None of the choices are correct
19INCORRECT
An IP datagram (datagram A) cannot reach its destination. An ICMP error message is sent to the source. The data field of the IP datagram (datagram B) that encapsulates the ICMP packet contains _______.
A)only the ICMP header
B)the ICMP header plus 8 bytes of datagram A C)only datagram A
D)None of the choices are correct
CHAPTER-10
Out of 20 questions, you answered 5 correctly, for a final grade of 25%.
5 correct (25%) 15 incorrect (75%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT The main problem that must be solved in providing mobile communication using the IP protocol is ____________.
A)connecting B)forwarding C)addressing
D)None of the choices are correct 2INCORRECT The original IP addressing was based on the assumption that a host is
________.
A)stationary B)mobile C)moving
D)None of the choices are correct 3INCORRECT The IP addresses are designed to work with ________ hosts because part of the
address defines the network to which the host is attached. A)stationary B)mobile C)moving
D)None of the choices are correct
4CORRECT
A mobile host normally uses two addresses. The host has its original address, called the _______ address and a temporary address, called the
_________address.
A)care-of; home B)home; care-of C)home; foreigner
D)None of the choices are correct 5INCORRECT When the mobile host acts as a foreign agent, the care-of address is called a
_______ care-of address.
A)common B)shared C)co-located
D)None of the choices are correct 6INCORRECT To communicate with a remote host, a mobile host goes through ________
phases.
A)three B)two C)four
D)None of the choices are correct 7CORRECT The first phase in mobile communication is called _________.
A)registration B)agent discovery C)data transfer
D)None of the choices are correct 8INCORRECT The second phase in mobile communication is called _________.
A)registration B)agent discovery C)data transfer
D)None of the choices are correct 9INCORRECT The third phase in mobile communication is called _________.
A)registration B)agent discovery C)data transfer
D)None of the choices are correct 10INCORRECT Mobile IP uses the router advertisement packet of _______ and appends an
agent advertisement message.
A)IGMP B)IP C)ICMP
D)None of the choices are correct 11INCORRECT A registration request or reply is sent by ________ using the well-known port
434.
A)TCP B)IP C)UDP
D)None of the choices are correct 12CORRECT _________ occurs when a remote host communicates with a mobile host that
has moved to the same network (or site) as the remote host. A)Triple crossing B)Double crossing C)Triangle routing
D)None of the choices are correct 13INCORRECT _______ occurs when the remote host communicates with a mobile host that is
not attached to the same network (or site) as the mobile host. A)Triple crossing B)Double crossing C)Triangle routing
D)None of the choices are correct 14INCORRECT In the _______ phase, a mobile host must learn the address of its home agent.
A)agent discovery B)registration C)data transfer
D)None of the choices are correct 15INCORRECT In the _______ phase, a mobile host must learn the address of its foreign agent.
A)agent discovery B)registration C)data transfer
D)None of the choices are correct 16CORRECT If a router acts as an agent, it advertises its presence in a network by appending
an agent _______ message to an ICMP router advertisement. A)solicitation B)advertisement C)discovery
D)None of the choices are correct 17INCORRECT A mobile host can send an agent _______ message if it has not received any
agent advertisements.
A)solicitation B)discovery C)registration
D)None of the choices are correct 18INCORRECT When a mobile host wants to register with its foreign agent, it sends _______
message.
B)an agent advertisement C)a registration request
D)None of the choices are correct 19INCORRECT The registration reply is sent by the _______ agent to the foreign agent.
A)home B)care-of C)discovery
D)None of the choices are correct 20CORRECT The _______ uses a registry table to find the care-of address of the mobile host.
A)home agent B)foreign agent C)remote host
D)None of the choices are correct
CHAPTER-11
Results Reporter
Out of 34 questions, you answered 11 correctly, for a final grade of 32%.
11 correct (32%) 23 incorrect (68%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT For purposes of routing, the Internet is divided into ___________. A)wide area networks
B)autonomous networks C)autonomous systems
D)None of the choices are correct
2INCORRECT Routing inside an autonomous system is referred to as ________ routing. A)interdomain
B)intradomain C)out-of-domain
3CORRECT Routing between autonomous systems is referred to as ______ routing. A)interdomain routing
B)intradomain routing C)out-of-domain
D)None of the choices are correct
4INCORRECT In _______ routing, the least cost route between any two nodes is the route with the minimum distance.
A)path vector B)distance vector C)link state
D)None of the choices are correct
5INCORRECT In ________, each node maintains a vector (table) of minimum distances to every node.
A)path vector B)distance vector C)link state
D)None of the choices are correct
6INCORRECT In distance vector routing, each node periodically shares its routing table with _________ and whenever there is a change.
A)every other node
B)its immediate neighbors C)one neighbor
D)None of the choices are correct
7CORRECT The Routing Information Protocol (RIP) is an intradomain routing based on _________ routing.
A)distance vector B)link state C)path vector
D)None of the choices are correct 8INCORRECT The metric used by _______ is the hop count.
A)OSPF B)RIP C)BGP
D)None of the choices are correct
9INCORRECT In RIP, the ________ timer controls the advertising of regular update messages. A)garbage collection
B)expiration C)periodic
D)None of the choices are correct
10CORRECT In RIP, the ________ timer is used to purge invalid routes from the table. A)garbage collection
B)expiration C)periodic
D)None of the choices are correct
11INCORRECT In RIP, the ________ timer controls the validity of the route. A)garbage collection
B)expiration C)periodic
D)None of the choices are correct 12INCORRECT RIP uses the services of _______.
A)TCP B)UDP C)IP
D)None of the choices are correct
13INCORRECT The _________ routing uses the Dijkstra algorithm to build a routing table. A)distance vector
B)link state C)path vector
D)None of the choices are correct
14INCORRECT The Open Shortest Path First (OSPF) protocol is an intradomain routing protocol based on _______ routing.
A)distance vector B)link state C)path vector
D)None of the choices are correct
15CORRECT The _______ protocol allows the administrator to assign a cost, called the metric, to each route.
A)OSPF B)RIP C)BGP
16CORRECT In OSPF, a ________ link connects two routers without any other host or router in between.
A)point-to-point B)transient C)stub
D)None of the choices are correct
17INCORRECT In OSPF, a _______ link is a network with several routers attached to it. A)point-to-point
B)transient C)stub
D)None of the choices are correct
18INCORRECT In OSPF, a ________ link is a network is connected to only one router. A)point-to-point
B)transient C)stub
D)None of the choices are correct
19INCORRECT
In OSPF, when the link between two routers is broken, the administration may create a _________ link between them using a longer path that probably goes through several routers.
A)point-to-point B)transient C)stub
D)None of the choices are correct 20INCORRECT In OSPF, a ________ defines the links of a true router.
A)network link B)router link
C)summary link to network D)None of the choices are correct 21CORRECT In OSPF, a ________ defines the links of a network.
A)network link B)router link
C)summary link to network D)None of the choices are correct
22INCORRECT In OSPF, an area border router advertises a ____________ LSA. A)network link
B)router link
C)summary link to network D)None of the choices are correct
23INCORRECT OSPF uses the _______ message to create neighborhood relationships and to test the reachability of neighbors.
A)link state request B)database description C)link state update
D)None of the choices are correct
24INCORRECT In OSPF, the ________ message does not contain complete database information; it only gives an outline, the title of each line in the database.
A)link state request B)database description C)link state update
D)None of the choices are correct
25CORRECT In OSPF, a _________ message is sent by a router that needs information about a specific route or routes.
A)link state request B)database description C)link state update
D)None of the choices are correct
26INCORRECT In ________ routing, we assume that there is one node (or more) in each autonomous system that acts on behalf of the entire autonomous system.
A)distant vector B)path vector C)link state
D)None of the choices are correct
27CORRECT ___________ is an interdomain routing protocol using path vector routing. A)BGP
B)RIP C)OSPF
D)None of the choices are correct
28INCORRECT BGP can have two types of sessions: _______ and ________ sessions. A)E-BGP; A-BGP
B)I-BGP; C-BGP C)E-BGP; I-BGP
D)None of the choices are correct
29CORRECT To create a neighborhood relationship, a router running BGP sends a(n) ________ message.
A)open B)update C)keepalive
D)None of the choices are correct
30INCORRECT
In BGP, the _______ message is used by a router to withdraw destinations that have been advertised previously, or to announce a route to a new destination, or both.
A)open B)update C)keepalive
D)None of the choices are correct
31INCORRECT The routers running the BGP protocols exchange _______ messages regularly to tell each other that they are alive.
A)open B)update C)keepalive
D)None of the choices are correct
32INCORRECT In BGP, a(n) _______ message is sent by a router whenever an error condition is detected or a router wants to close the connection.
A)open B)update C)keepalive
D)None of the choices are correct 33CORRECT BGP messages are encapsulated in _______.
A)TCP segments B)UDP user datagrams C)IP datagrams
D)None of the choices are correct 34CORRECT An area is _______.
A)part of an AS
B)composed of at least two ASs C)another term for an AS
CHAPTER-12
Results Reporter
Out of 29 questions, you answered 10 correctly, for a final grade of 34%.
10 correct (34%) 19 incorrect (66%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT A one-to-all communication between one source and all hosts on a network is classified as a _______ communication.
A)unicast B)multicast C)broadcast
D)None of the choices are correct
2INCORRECT A one-to-many communication between one source and a specific group of hosts is classified as a _______ communication.
A)unicast B)multicast C)broadcast
D)None of the choices are correct
3CORRECT A one-to-one communication between one source and one destination is classified as a _______ communication.
A)unicast B)multicast C)broadcast
D)None of the choices are correct
4CORRECT In ______, the router forwards the received packet through only one of its interfaces.
A)unicasting B)multicasting C)broadcasting
D)None of the choices are correct
interfaces.
A)unicasting B)multicasting C)broadcasting
D)None of the choices are correct
6INCORRECT Emulation of ________ through ___________ is not efficient and may create long delays.
A)unicasting; multiple unicasting B)multicasting; multiple unicasting C)broadcasting; multicasting D)None of the choices are correct
7INCORRECT In unicast routing, each router in the domain has a table that defines a ______ path tree to possible destinations.
A)average B)longest C)shortest
D)None of the choices are correct
8INCORRECT In multicast routing, each involved router needs to construct a ________ path tree for each group.
A)average B)longest C)shortest
D)None of the choices are correct
9INCORRECT In the _______ tree approach, each router needs to have one shortest path tree for each group.
A)group-shared B)source-based C)destination-based
D)None of the choices are correct
10CORRECT In the group-shared tree approach, ________ is/are involved in multicasting. A)only the core router
B)all routers
C)only some routers
D)None of the choices are correct
11CORRECT Multicast link state routing uses the _______ tree approach. A)source-based
B)group-shared C)destination-based
D)None of the choices are correct
12INCORRECT
The Multicast Open Shortest Path First (MOSPF) protocol is an extension of the OSPF protocol that uses multicast routing to create source-based trees. The protocol is based on _______ routing.
A)distance vector B)link state C)path vector
D)None of the choices are correct 13CORRECT MOSPF is a _______ protocol.
A)data-driven B)command-driven
C)both data- and command-driven D)None of the choices are correct
14INCORRECT _________ broadcasts packets, but creates loops in the systems. A)Forwarding
B)Flooding C)Backwarding
D)None of the choices are correct
15CORRECT In RPF, a router forwards only the copy that has traveled the _______ path from the source to the router.
A)shortest B)longest C)average
D)None of the choices are correct 16INCORRECT RPF eliminates the ________ in the flooding process.
A)forwarding B)backwarding C)flooding
D)None of the choices are correct
17INCORRECT RPB creates a shortest path _______ tree from the source to each destination. A)unicast
B)multicast C)broadcast
D)None of the choices are correct
18CORRECT RPB guarantees that each destination receives _________ of the packet. A)one copy
B)no copies C)multiple copies
D)None of the choices are correct
19INCORRECT In ________, the multicast packet must reach only those networks that have active members for that particular group.
A)RPF B)RPB C)RPM
D)None of the choices are correct
20CORRECT _______ adds pruning and grafting to _______ to create a multicast shortest path tree that supports dynamic membership changes.
A)RPM; RPB B)RPB; RPM C)RPF: RPM
D)None of the choices are correct
21INCORRECT __________ is an implementation of multicast distance vector routing. It is a source-based routing protocol, based on RIP.
A)MOSPF B)DVMRP C)CBT
D)None of the choices are correct 22CORRECT DVMRP is a ________routing protocol, based on RIP.
A)source-based B)group-shared C)destination-based
D)None of the choices are correct 23INCORRECT Pruning and grafting are strategies used in _______.
A)RPF B)RPB C)RPM
D)None of the choices are correct
messages for a specific group through a specific router. A)weed
B)graft C)prune
D)None of the choices are correct
25INCORRECT A _______ message tells an upstream router to start sending multicast messages for a specific group through a specific router.
A)weed B)graft C)prune
D)None of the choices are correct
26INCORRECT CBT is a ________ protocol that uses a core as the root of the tree. A)source-based
B)group-shared C)destination-based
D)None of the choices are correct 27CORRECT PIM-DM is used in a _______ multicast environment.
A)dense B)sparse
C)dense or sparse
D)None of the choices are correct
28INCORRECT PIM-SM is used in a _______multicast environment such as a WAN. A)dense
B)sparse
C)dense or sparse
D)None of the choices are correct
29INCORRECT In _______, a logical tunnel is established by encapsulating the multicast packet inside a unicast packet.
A)UNIBONE B)MULTBONE C)MBONE
D)None of the choices are correct
CHAPTER-13
Results Reporter
Out of 11 questions, you answered 3 correctly, for a final grade of 27%.
3 correct (27%) 8 incorrect (73%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT One of the main duties of the transport layer is ____________ communication. A)node-to-node
B)host-to-host C)process-to-process
D)None of the choices are correct
2CORRECT The client program normally uses ____________ port number. A)a well-known
B)an ephemeral C)a private
D)None of the choices are correct
3INCORRECT The server program normally uses __________ port number. A)a well-known
B)an ephemeral C)a dynamic
D)None of the choices are correct 4INCORRECT A socket address is a combination of __________.
A)Mac address and logical address B)Mac address and port number
C)User-specific address and logical address D)None of the choices are correct
5CORRECT ______________ means accepting items from more than one source. A)Demultiplexing
B)Multiplexing
C)Multiplexing and demultiplexing D)None of the choices are correct
A)Demultiplexing B)Multiplexing
C)Multiplexing and demultiplexing D)None of the choices are correct
7INCORRECT _________ means the producer delivers the items when they are produced without waiting for the request from the consumer.
A)Pushing B)Pulling C)Forwarding
D)None of the choices are correct
8CORRECT _________ means the consumer takes the items when it is ready to do so. A)Pushing
B)Pulling C)Forwarding
D)None of the choices are correct
9INCORRECT
In the stop-and-wait protocol, the send window size is ______ and the receive window size is _______ where n is related to the number of bits in the
sequence. A)1, 1 B)1, n C)n, 1 D)n, n 10INCORRECT
In the go-back-N protocol, the send window size is ______ and the receive window size is _______, where n is related to the number of bits in the sequence. number. A)1, 1 B)1, n C)n, 1 D)n, n 11INCORRECT
In the selective-repeat protocol, the send window size is ______ and the receive window size is _______, where n is related to the number of bits in the
sequence.
A)1, 1 B)1, n C)n, 1 D)n, n
CHAPTER-14
Results Reporter
Out of 23 questions, you answered 5 correctly, for a final grade of 22%.
5 correct (22%) 18 incorrect (78%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a .
1INCORRECT UDP is called a ________________transport protocol. A)connectionless, reliable
B)connection-oriented, unreliable C)connectionless, unreliable D)None of the choices are correct
2INCORRECT UDP does not add anything to the services of IP except for providing _______ communication.
A)node-to-node B)process-to-process C)host-to-host
D)None of the choices are correct 3INCORRECT UDP is an acronym for _______.
A)User Delivery Protocol B)User Datagram Procedure C)User Datagram Protocol D)None of the choices are correct
4INCORRECT The local host and the remote host are defined using IP addresses. To define the processes, we need second identifiers called ____________ .
A)UDP addresses B)transport addresses C)port addresses
D)None of the choices are correct
5CORRECT The ports ranging from 0 to 1,023 are assigned and controlled by ICANN. These are the ___________ ports.
A)well-known B)registered C)dynamic
D)None of the choices are correct
6INCORRECT The ports ranging from 1,024 to 49,151 are called ___________ ports. A)well-known
B)registered C)dynamic
D)None of the choices are correct
7INCORRECT The ports ranging from 49,152 to 65,535 can be used as temporary or private port numbers. They are called the ________ ports.
A)well-known B)registered C)dynamic
D)None of the choices are correct
8CORRECT In the sending computer, UDP receives a data unit from the _______ layer. A)application
B)transport C)network
D)None of the choices are correct
9INCORRECT In the sending computer, UDP sends a data unit to the _______ layer. A)application
B)transport C)IP
D)None of the choices are correct 10INCORRECT UDP and TCP are both _______ layer protocols.
A)data link B)network C)transport
D)None of the choices are correct
11CORRECT Which of the following functions does UDP perform? A)process-to-process communication B)host-to-host communication C)end-to-end reliable data delivery D)None of the choices are correct
12INCORRECT When the IP layer of a receiving host receives a datagram, _______. A)delivery is complete
B)a transport layer protocol takes over C)a header is added
D)None of the choices are correct
13CORRECT UDP needs the _______ address to deliver the user datagram to the correct application process.
A)port B)application C)internet
D)None of the choices are correct 14INCORRECT A port address in UDP is _______ bits long.
A)8 B)16 C)32
D)any of the above
15INCORRECT Which of the following does UDP guarantee? A)flow control
B)connection-oriented delivery C)flow control
D)None of the choices are correct
16INCORRECT The source port address on the UDP user datagram header defines _______. A)the sending computer
B)the receiving computer
C)the process running on the sending computer D)None of the choices are correct
17INCORRECT The combination of an IP address and a port number is called a ____________. A)transport address
B)network address C)socket address
D)None of the choices are correct
18INCORRECT To use the services of UDP, we need ________ socket addresses. A)four
B)two C)three
D)None of the choices are correct 19CORRECT UDP packets are called __________ .
A)user datagrams B)segments C)frames
D)None of the choices are correct
20INCORRECT UDP packets have a fixed-size header of _______ bytes. A)16
B)8 C)40
D)None of the choices are correct 21INCORRECT UDP packets are encapsulated in ___________ .
A)an Ethernet frame B)an TCP segment C)an IP datagram
D)None of the choices are correct
22INCORRECT UDP uses ________ to handle outgoing user datagrams from multiple processes on one host.
A)flow control B)multiplexing C)demultiplexing
D)None of the choices are correct
23INCORRECT UDP uses _______ to handle incoming user datagrams that go to different processes on the same host.
A)flow control B)multiplexing C)demultiplexing
D)None of the choices are correct
Results Reporter
Out of 49 questions, you answered 15 correctly, for a final grade of 31%.
15 correct (31%) 34 incorrect (69%) 0 unanswered (0%)
Your Results:
The correct answer for each question is indicated by a . 1CORRECT TCP is a __________protocol.
A)stream-oriented B)message-oriented C)block-oriented
D)None of the choices are correct
2INCORRECT TCP groups a number of bytes together into a packet called a ___________. A)user datagram
B)segment C)datagram
D)None of the choices are correct 3CORRECT TCP is a(n) ___________ protocol.
A)connection-oriented B)connectionless C)unreliable
D)None of the choices are correct 4CORRECT TCP is a(n) _______ transport protocol.
A)unreliable
B)best-effort delivery C)reliable
D)None of the choices are correct
5INCORRECT TCP uses _________________ to check the safe and sound arrival of data. A)an acknowledgment mechanism
B)out-of-band signalling
C)the services of another protocol D)None of the choices are correct
The numbering starts with a __________________. A)0
B)1
C)randomly generated number D)None of the choices are correct
7INCORRECT
TCP assigns a sequence number to each segment that is being sent. The sequence number for each segment is the number of the _______ byte carried in that segment.
A)first B)last C)middle
D)None of the choices are correct 8INCORRECT Communication in TCP is ___________.
A)simplex B)half-duplex C)full-duplex
D)None of the choices are correct
9INCORRECT The value of the acknowledgment field in a segment defines the sequence number related to the ______byte a party expects to receive.
A)first B)last C)next
D)None of the choices are correct
10CORRECT The inclusion of the checksum in the TCP segment is ________. A)optional
B)mandatory
C)at the discretion of the application program D)None of the choices are correct
11INCORRECT A TCP segment is encapsulated in __________. A)an IP datagram
B)an Ethernet frame C)a UDP user datagram
D)None of the choices are correct
12CORRECT A SYN segment cannot carry data; it consumes _____ sequence number(s). A)no
