Chapter 12 - IP Addressing and Subnetting

A Class B network needs to be subnetted such that it supports 100 subnets and 100 hosts/subnet. For this design, if multiple masks meet those design requirements, the engineer should choose the mask that maximizes the number of hosts per subnet. Which of the following masks meet the design criteria?

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Which of the following IP addresses is not in the same subnet as 190.4.80.80?

10.1.1.1

Which of the following is the result of a Boolean AND between IP address 150.150.4.100 and mask 255.255.192.0?

1001 0110 1001 0110 0000 0000 0000 0000

If mask 255.255.255.240 were used with a Class C network, how many subnets could exist, how many hosts per subnet, respectively?

16 and 14

Which of the following are private IP networks?

172.31.0.0 192.168.255.0

Which of the following are valid subnet numbers in network 180.1.0.0 when using mask 255.255.248.0?

180.1.8.0, 180.1.16.0, 180.1.32.0, 180.1.40.0

Which of the following are not valid subnet numbers in network 180.1.0.0 when using mask 255.255.255.0?

180.2.2.0

Which of the following IP addresses are not in the same subnet as 190.4.80.80/25?

190.4.80.200, 190.4.90.1, 10.1.1.1

Which of the following IP addresses are not in the same subnet as 190.4.80.80 mask 255.255.255.0?

190.4.90.1, 10.1.1.1

Each of the following answers lists a dotted decimal number and a subnet mask. The dotted decimal number might be a valid IP address that can be used by a hosts or it might be a subnet number of broadcast address. Which of the answers sho an address that can be used by a host?

192.168.5.160, 255.255.255.192 172.20.49.0, 255.255.254.0

Which of the following subnet masks let a Class A network have up to 150 hosts per subnet and supports 164 subnets?

255.255.0.0, 255.255.255.0, 255.255.192.0, 255.255.252.0

Which of the following subnet masks lets a Class B network have up to 150 hosts per subnet, and supports 164 subnets?

255.255.255.0

If mask 255.255.255.128 were used with a Class B network, how many subnets could exist, with how many hosts per subnet, respectively?

512 and 126

Which of the following shows the equivalent of subnet mask 255.255.248.0, but in prefix notation?

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