Explain the operation of Cisco switches and basic switching concepts (14 questions)

QUESTION NO: 1

You want to influence the root bridge selection within the TestKing LAN. Which two values are used by spanning tree protocol to elect a root bridge? (Choose two.)

A. Amount of RAM B. Speed of the links C. IOS Version D. MAC Address E. Bridge Priority F. IP Address G. Router ID Answer: D, E QUESTION NO: 2

A TestKing Ethernet switch receives a unicast frame with a destination MAC that is listed in the switch table. What will this switch do with the frame?

A. The switch will forward the frame to a specific port

B. The switch will forward the frame to all ports except the port on which it was received C. The switch will return a copy of the frame out the source port

D. The switch will not forward unicast frames

E. The switch will remove the destination MAC from the switch table F. None of the above.

Answer: A

QUESTION NO: 3

In which circumstance are multiple copies of the same unicast frame likely to be transmitted in the TestKing Switched LAN?

A. During high traffic periods

B. In an improperly implemented redundant topology C. After broken links are re-established

D. When upper-layer protocols require high reliability E. When a dual ring topology is in use

F. None of the above

Answer: B

QUESTION NO: 4

Part of the TestKing switched LAN is shown below:

Based on the information show above, which device will provide the spanning-tree designated port role for the TestKing network segment that services the printers?

A. Switch TestKingA B. Hub TestKingE C. Switch TestKingC D. Switch TestKingB E. Switch TestKingD

F. None of the switches will provide the designated port role

Answer: C

QUESTION NO: 5

The TestKing network administrator needs to a switch named TK1 to become the root bridge for a redundant path switched network. What can be done to ensure that TK1 will always assume the role as the root bridge?

A. Assign the switch a higher MAC address than the other switches in the network have B. Establish a direct link from the switch to all other switches in the network

C. Configure the switch full-duplex operation and configure the other switches for half-duplex operation

D. Configure the switch so that it has lower priority than other switches in the network E. None of the above

Answer: D

QUESTION NO: 6

In the TestKing network shown above, switch TestKing1 has just been restarted and has passed the POST routine. Host TestKingA (the one on the left) sends its initial frame to Host TestKingC. What is the first thing the switch will do as regards to populating the switching table?

A. Switch TestKing1 will add 192.168.23.12 to the switching table B. Switch TestKing1 will add 192.168.23.4 to the switching table C. Switch TestKing1 will add 000B.DB95.2EE9 to the switching table D. Switch TestKing1 will add 000A.8A47.E612 to the switching table E. None of the above

Answer: D

QUESTION NO: 7

TK1 is a switch in the TestKing network. Why will TK1 never learn the broadcast address?

A. Broadcast frames are never sent to switches B. A broadcast frame is never forwarded by a switch C. Broadcasts only use network layer addressing

E. Broadcast addresses use an incorrect format for the switching table F. None of the above

Answer: D

QUESTION NO: 8 DRAG DROP

You work as a network technician at TestKing.com. Your boss, Mrs. Tess King, is interested in basic switch configurations. Match the IOS command with the appropriate purpose.

Answer: Explanation:

QUESTION NO: 9

Host TestKingB sends a frame to host TestKingC. What will the switch do with the frame?

A. Drop the frame

B. Send the frame out all ports except port 0/2 C. Return the frame to host TestKingB

D. Send an ARP request for host TestKingC

E. Send an ICMP Host Unreachable message to Host TestKing B

F. Record the destination MAC address in the switching table and send the frame directly to Host TestKingC

Answer: B Explanation:

QUESTION NO: 10

The following was seen on a TestKing switch.

TestKing1 receives the frame with the addressing shown. According to the command output shown in the exhibit, how will TestKing1 handle this frame?

A. It will forward the frame out port Fa0/3 only. B. It will drop the frame.

C. It will flood the frame out all ports except Fa0/3. D. It will flood the frame out all ports.

Answer: C Explanation:

switch ports by examining the source address of frames that are received on that port. the same switch or a different switch.

to all ports except the source to find out the destination host.

In the output there is no MAC address of the given host so the switch will flood to all ports except the source port, which is port fa 0/3.

QUESTION NO: 11

Refer to the topology and MAC address table shown in the exhibit:

Host TestKingA sends a data frame to host TestKingD. What will the TestKing1 switch do when it receives the frame from host A?

A. The TestKing1 switch will flood the frame out of all ports except for port Fa0/3. B. The TestKing1 switch will discard the frame and send an error message back to host TestKingA.

C. The TestKing1 switch will add the destination address of the frame to the MAC address table and forward the frame to host D.

E. None of the above

Answer: D Explanation:

When switch receives the data frame from the host not having the MAC address already in the MAC table, it will add the MAC address to the source port on the MAC address table and sends the data frame. If the switch already has the MAC address in it's table for the destination, as it is in this case, it will forward the frame directly to the destination port. If it was not already in it's MAC table, then they frame would have been flooded out all ports except for the port that it came from.

QUESTION NO: 12

Switch TestKingA receives the frame with the addressing shown in the exhibit.

According to the command output also shown in the exhibit, how will Switch TestKingA handle this frame?

A. It will flood the frame out all ports except Fa0/3. B. It will forward the frame out port Fa0/3 only. C. It will flood the frame out all ports.

D. It will forward the frame out port Fa0/6 only. E. It will drop the frame.

F. None of the above

Answer: D Explanation:

When frame receives the frame, it checks the source address on MAC table if MAC address found in MAC table it tries to forward if not in MAC table adds the Address on MAC table. After checking the source address, it checks the destination address on MAC table, if MAC address found on MAC table it forwards to proper ports otherwise floods on all ports except the source port. In this case, the MAC address shown is already in the table so it will be forwarded directly.

QUESTION NO: 13

Please study the exhibit shown below carefully.

Why does the switch have two MAC addresses assigned to the FastEthernet 0/1 port in the switch address table?

B. Data from Host3 and Host4 has been received by switch port FastEthernet 0/1. C. Host3 and Host4 are on two different VLANs.

D. Data from two of the devices connected to the switch has been sent to Host3. E. None of the above

Answer: B Explanation:

Switches learn the MAC addresses of PCs or workstations that are connected to their switch ports by examining the source address of frames that are received on that port. When more than one device is attached to a switch port, such as via the use of a hub as shown in this example, the switch will retain the MAC address of each of the known devices on that port.

QUESTION NO: 14

The following output was displayed on a TestKing device:

Study the exhibit above. Switch-TestKing1 needs to send data to host with a MAC address of 00b0.d056.efa4. What will Switch-TestKing1 do with this data?

A. Switch-TestKing1 will send an ARP request out all its ports except the port from which the data originated

B. Switch-TestKing1 will drop the data because it does not have an entry for the MAC address

C. Switch-TestKing1 will forward the data to its default gateway

D. Switch-TestKing1 will flood the data out all of its ports except the port from which the data originated

E. None of the above

Answer: D Explanation:

Switches work as follows:

switch ports by examining the source address of frames that are received on that port. the same switch or a different switch.

to all ports except the source to find out the destination host.

In output there is no MAC address of give host so switch floods to all ports except the source port.

Section 5: Perform, save and verify initial switch configuration