1. Host A is a PC, connected to switch SW1 and assigned to VLAN 1. Which of the following are typically assigned an IP address in the same subnet as host A? (Choose two answers.)
a. The local router’s WAN interface b. The local router’s LAN interface c. All other hosts attached to the same switch d. Other hosts attached to the same switch and also in VLAN 1
2. Why does the formula for the number of hosts per subnet (2H – 2) require the subtraction of two hosts?
a. To reserve two addresses for redundant default gateways (routers) b. To reserve the two addresses required for DHCP operation c. To reserve addresses for the subnet ID and default gateway (router) d. To reserve addresses for the subnet broadcast address and subnet ID
3. A Class B network needs to be subnetted such that it supports 100 subnets and 100 hosts/subnet. Which of the following answers list a workable combination for the number of network, subnet, and host bits? (Choose two answers.)
a. Network = 16, subnet = 7, host = 7 b. Network = 16, subnet = 8, host = 8 c. Network = 16, subnet = 9, host = 7 d. Network = 8, subnet = 7, host = 17
4. Which of the following are private IP networks? (Choose two answers.)
a. 172.31.0.0 b. 172.32.0.0 c. 192.168.255.0 d. 192.1.168.0 e. 11.0.0.0
5. Which of the following are public IP networks? (Choose three answers.)
a. 9.0.0.0 b. 172.30.0.0 c. 192.168.255.0 d. 192.1.168.0 e. 1.0.0.0
6. Before Class B network 172.16.0.0 is subnetted by a network engineer, what parts of the structure of the IP addresses in this network already exist, with a specific size? (Choose two answers.)
a. Network b. Subnet c. Host d. Broadcast
7. A network engineer spends time thinking about the entire Class B network 172.16.0.0, and how to subnet that network. He then chooses how to subnet this Class B network and creates an addressing and subnetting plan, on paper, showing his choices. If you compare his thoughts about this network before subnetting the network, to his thoughts about this network after mentally subnetting the network, which of the following occurred to the parts of the structure of addresses in this network?
a. The subnet part got smaller. b. The host part got smaller. c. The network part got smaller. d. The host part was removed. e. The network part was removed.
1. Which of the following are not valid Class A network IDs? (Choose two answers.)
a. 1.0.0.0 b. 130.0.0.0 c. 127.0.0.0 d. 9.0.0.0
2. Which of the following are not valid Class B network IDs?
a. 130.0.0.0 b. 191.255.0.0 c. 128.0.0.0 d. 150.255.0.0 e. All are valid Class B network IDs.
3. Which of the following are true about IP address 172.16.99.45’s IP network? (Choose two answers.)
a. The network ID is 172.0.0.0. b. The network is a Class B network. c. The default mask for the network is 255.255.255.0. d. The number of host bits in the unsubnetted network is 16.
4. Which of the following are true about IP address 192.168.6.7’s IP network? (Choose two answers.)
a. The network ID is 192.168.6.0. b. The network is a Class B network. c. The default mask for the network is 255.255.255.0. d. The number of host bits in the unsubnetted network is 16.
5. Which of the following is a network broadcast address?
a. 10.1.255.255 b. 192.168.255.1 c. 224.1.1.255 d. 172.30.255.255
1. Which of the following answers lists the prefix (CIDR) format equivalent of 255.255.254.0?
a. /19 b. /20 c. /23 d. /24 e. /25
2. Which of the following answers lists the prefix (CIDR) format equivalent of 255.255.255.240?
a. /26 b. /28 c. /27 d. /30 e. /29
3. Which of the following answers lists the dotted-decimal notation (DDN) equivalent of /30?
a. 255.255.255.192 b. 255.255.255.252 c. 255.255.255.240 d. 255.255.254.0 e. 255.255.255.0
4. Working at the help desk, you receive a call and learn a user’s PC IP address and mask (10.55.66.77, mask 255.255.255.0). When thinking about this using classful logic, you determine the number of network (N), subnet (S), and host (H) bits. Which of the following is true in this case?
a. N=12 b. S=12 c. H=8 d. S=8 e. N=24
5. Working at the help desk, you receive a call and learn a user’s PC IP address and mask (192.168.9.1/27). When thinking about this using classful logic, you determine the number of network (N), subnet (S), and host (H) bits. Which of the following is true in this case?
a. N=24 b. S=24 c. H=8 d. H=7
6. Which of the following statements is true about classless IP addressing concepts?
a. Uses a 128-bit IP address b. Applies only for Class A and B networks c. Separates IP addresses into network, subnet, and host parts d. Ignores Class A, B, and C network rules
7. Which of the following masks, when used as the only mask within a Class B network, would supply enough subnet bits to support 100 subnets? (Choose two.)
a. /24 b. 255.255.255.252 c. /20 d. 255.255.252.0
1. When thinking about an IP address using classful addressing rules, an address can have three parts: network, subnet, and host. If you examined all the addresses in one subnet, in binary, which of the following answers correctly states which of the three parts of the addresses will be equal among all addresses? (Choose the best answer.)
a. Network part only b. Subnet part only c. Host part only d. Network and subnet parts e. Subnet and host parts
2. Which of the following statements are true regarding the binary subnet ID, subnet broadcast address, and host IP address values in any single subnet? (Choose two answers.)
a. The host part of the broadcast address is all binary 0s. b. The host part of the subnet ID is all binary 0s. c. The host part of a usable IP address can have all binary 1s. d. The host part of any usable IP address must not be all binary 0s.
3. Which of the following is the resident subnet ID for IP address 10.7.99.133/24?
a. 10.0.0.0 b. 10.7.0.0 c. 10.7.99.0 d. 10.7.99.128
4. Which of the following is the resident subnet for IP address 192.168.44.97/30?
a. 192.168.44.0 b. 192.168.44.64 c. 192.168.44.96 d. 192.168.44.128
5. Which of the following is the subnet broadcast address for the subnet in which IP address 172.31.77.201/27 resides?
a. 172.31.201.255 b. 172.31.255.255 c. 172.31.77.223 d. 172.31.77.207
6. A fellow engineer tells you to configure the DHCP server to lease the last 100 usable IP addresses in subnet 10.1.4.0/23. Which of the following IP addresses could be leased as a result of your new configuration?
a. 10.1.4.156 b. 10.1.4.254 c. 10.1.5.200 d. 10.1.7.200 e. 10.1.255.200
Part 2 Questions Continued:
Perspectives on IPv4 Subnetting:1. B, D 2. D 3. B, C 4. A, C 5. A, D, E 6. A, C 7. B Analyzing Classfull IPv4 Networks:1. B, C 2. E 3. B, D 4. A, C 5. D Analyzing Subnet Masks:1. C 2. B 3. B 4. C 5. A 6. D 7. A, BAnalyzing Existing Subnets:1. D 2. B, D 3. C 4. C 5. C 6. C