Question Question Question EdTech 552: Lab 3 Answer Sheet

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Question 3.1.1

Question Answers a. 123 01111011 b. 202 11001010 c. 67 01000011 d. 7 00000111 e. 252 11111100 f. 91 01011011 g. 116.127.71.3 01110100.01111111.01010001.00000011 h. 255.255.255.0 11111111.11111111.11111111.00000000 i. 192.143.255.255 11000000.10001111.11111111.11111111 j. 12.101.9.16 00001100.01100100.00001001.00010000

Question 3.2.1

Question Answers a. 1110 14 b. 100110 38 c. 11111111 255 d. 11010011 211 e. 01000001 65 f. 11001110 206 g. 01110101 117 h. 10001111 143 i. 11101001.00011011.10000000.10100100 233.27.128.164 j. 10101010.00110100.11100110.00010111 170.52.230.23

Question 3.3.1

1. What is the decimal and binary range of the first octet of all possible Class B IP addresses? Decimal: From: 128 To: 191

Binary: From: 10000000 To: 10111111

2. Which octet(s) represent the network portion of a Class C IP address? First, second & third 3. Which octet(s) represent the host portion of a Class A IP address? Second, third & fourth 4. What is the maximum number of useable hosts with a Class C network address? 254 5. How many Class B networks are there? 16384

6. How many hosts can each Class B network have? 65534

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Host IP Address Address

Class Network Address Host Address Network Broadcast Address Default Subnet Mask

216.14.55.137 C 216.14.55 137 216.14.55.255 . 255.255.255.0 123.1.1.15 A 123 1.1.15 123.255.255.255 255.0.0.0 150.127.221.244 B 150.127 221.244 150.127.255.255 255.255.0.0 194.125.35.199 C 194.125.35 35 194.125.35.255 255.255.255.0 175.12.239.244 B 175.12 239.244 175.12.255.255 255.255.0.0

Question 3.3.3

IP Host Address Valid Address?

(Yes/No) Why or Why Not

150.100.255.255 _No _{This
is
a
class
B
network
broadcast
address} 175.100.255.18 _Yes _{This
is
a
valid
class
B
network
address}

195.234.253.0 _No _{The
last
octet
cannot
be
0
in
a
valid
address,
this
is
subnet} address

100.0.0.23 Yes This is a valid class A network address

188.258.221.176 No Octet range cannot be greater than 255 (second octet is not valid)

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Question 3.4.1

Subnet No. Subnet Bits

Borrowed Binary Value

Subnet Bits Decimal and Subnet No.

Host Bits Possible Binary Values (Range) (5 Bits)

Subnet/Host

Decimal Range Use?

0 Subnet ₀₀ ₀ _{00000
-‐
11111} _0-‐31 _{No
–
no
subnet} 1st Subnet ₀₁ ₃₂ _{00000
-‐
11111} _32-‐63 _Yes 2nd Subnet ₁₀ ₆₄ _{00000
-‐
11111} _64-‐95 _Yes 3rd Subnet ₁₁ ₉₆ _{00000
-‐
11111} _96-‐127 _Yes 4th Subnet ₁₀₀ ₁₂₈ _{00000
-‐
11111} _128-‐159 _Yes 5th Subnet ₁₀₁ ₁₆₀ _{00000
-‐
11111} _160-‐191 _Yes 6th Subnet ₁₁₀ ₁₉₂ _{00000
-‐
11111} _192-‐223 _Yes

7th Subnet ₁₁₁ ₂₂₄ _{00000
-‐
11111} _224-‐255 _{No
–
reserved} for network broadcast

Use the table just developed to help answer the following questions:

1. Which octet(s) represent the network portion of a Class C IP address? 1st_{,
2}nd_{&
3}rd_octets 2. Which octet(s) represent the host portion of a Class C IP address? 4th_octet

3. What is the binary equivalent of the Class C network address in the scenario? Decimal network address: 197.15.22.0

Binary network address: 11000101.00001111.00010110.00000000

4. How many high-‐order bits were borrowed from the host bits in the fourth octet? 3 5. What subnet mask must be used? Show the subnet mask in decimal and binary.

Decimal subnet mask: 255.255.255.224

Binary subnet mask: 11111111.11111111.11111111.11100000

6. What is the maximum number of subnets that can be created with this subnet mask? 8 7. What is the maximum number of useable subnets that can be created with this mask? 6 8. How many bits were left in the fourth octet for host IDs? 5

9. How many hosts per subnet can be defined with this subnet mask? 30

10. What is the maximum number of hosts that can be defined for all subnets with this scenario? Assume the lowest and highest subnet numbers and the lowest and highest host ID on each subnet cannot be used. 180

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Question 3.5.1

Given a Class A network address of 10.0.0.0 / 24 answer the following questions

1. How many bits were borrowed from the host portion of this address? 16 2. What is the subnet mask for this network?

Dotted decimal? 255.255.255.0

Binary? 11111111.11111111.11111111.00000000

3. How many usable subnetworks are there? 65536 4. How many usable hosts are there per subnet? 254 5. What is the host range for usable subnet sixteen? 1 -‐254 6. What is the network address for usable subnet sixteen? 10.0.16 7. What is the broadcast address for usable subnet sixteen? 10.0.16.255 8. What is the broadcast address for the last usable subnet? 10.255.254.255 9. What is the broadcast address for the major network? 10.255.255.255

Question 3.6.1

Given this Class B network address and these requirements answer the following questions 172.16.0.0

1. How many subnets are needed for this network? 70

2. What is the minimum number of bits that can be borrowed? 7 3. What is the subnet mask for this network?

Dotted decimal? 255.255.254.0

Binary? 11111111.11111111.11111110.00000000

4. Slash format /23

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Subnetwork # Subnetwork ID Host Range Broadcast ID 0 172.16.0.0 172.16.0.0 – 172.16.1.254 (non-‐useable) 172.16.1.255 1 172.16.2.0 172.16.2.1 -‐ 172.16.3.254 172.16.3.255 2 172.16.4.0 172.16.4.1 -‐ 172.16.5.254 172.16.5.255 124 172.16.248.0 172.16.248.1 -‐ 172.16.249.254 172.16.248.255 125 172.16.250.0 172.16.250.1 -‐ 172.16.251.254 172.16.250.255 126 172.16.252.0 172.16.252.1 -‐ 172.16.253.254 172.16.252.255 127 172.16.254.0 172.16.254.1 – 172.16.255.254 (non-‐useable) 172.16.255.255 (Network Broadcast)

1. What is the host range for subnet two? 172.16.3.1 -‐ 172.16.5.254 2. What is the broadcast address for the 126th subnet? 172.16.250.255 3. What is the broadcast address for the major network? 172.16.255.255

Question 3.7.1

Given this Class C network address and these requirements answer the following questions 1. How many subnets are needed for this network? 5 useable (7 total)

2. What is the subnet mask for this network? Dotted decimal? 255.255.255.224

Binary? 11111111.11111111.11111111.11100000 3. Slash format 192.168.1.0 /27

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Question 3.7.2

Subnetwork # Subnetwork IP Host Range Broadcast ID

0 192.168.1.0 192.168.1.1 -‐192.168.1.30 (non-‐ useable) 192.168.1.31 1 192.168.1.32 192.168.1.33 -‐192.168.1.62 192.168.1.63 2 192.168.1.64 192.168.1.65 -‐192.168.1.94 192.168.1.95 3 192.168.1.96 192.168.1.97 -‐192.168.1.126 192.168.1.127 4 192.168.1.128 192.168.1.129 -‐192.168.1.158 192.168.1.159 5 192.168.1.160 192.168.1.161 -‐192.168.1.190 192.168.1.191 6 192.168.1.192 192.168.1.193 -‐192.168.1.222 192.168.1.223 7 192.168.1.224 192.168.1.225 -‐192.168.1.254 (non-‐useable) 192.168.1.255 (network address)

1. What is the host range for subnet six? 192.168.1.193 -‐192.168.1.222 2. What is the broadcast address for the 3rd subnet? 192.168.1.95 3. What is the broadcast address for the major network? 192.168.1.255