CCNA DC FAQ: Perspectives on IPv4 Subnetting
Q1. 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
Q2. Why does the formula for the number of hosts per subnet (2 H – 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
Q3. A Class B network needs to be subnetted such that it supports 100 subnets and 100 hosts per 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
Q4. Which of the following are private IP networks? (Choose two answers.)
Q5. Which of the following are public IP networks? (Choose three answers.)
Q6. 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.)
Q7. 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.
Q8. Which of the following terms are not used to reference the one number in each subnet used to uniquely identify the subnet? (Choose two answers.)
a. Subnet ID
b. Subnet number
c. Subnet broadcast
d. Subnet name
e. Subnet address