ITN - Module 11 - IPv4 Addressing

What is the prefix length notation for the subnet mask 255.255.255.248?

• /26

• /27

• /28

• /29

How many usable IP addresses are available on the 192.168.1.0/27 network?

• 32

• 30

• 62

• 14

• 34

Which subnet mask would be used if exactly 6 host bits are available?

• 255.255.255.192

• 255.255.255.224

• 255.255.255.240

• 255.255.255.248

What does the IP address 192.168.20.250/24 represent?

• Multicast address

• Broadcast address

• Host address

• Network address

If a network device has a mask of /26, how many IP addresses are available for hosts on this network?

• 30

• 64

• 32

• 62

What is the purpose of the subnet mask in conjunction with an IP address?

• Determine the subnet to which the host belongs

• Identify whether the address is public or private

• Mask the IP address to outsiders

• Uniquely identify a host on a network

You are designing a subnet mask for the 192.168.20.0/24 network. You want 8 subnets with up to 30 hosts on each subnet. What subnet mask should you use? Answer should be written in full dotted decimal.

What is the last valid host on the subnetwork that the host 192.168.40.68/29 belongs to?

• 192.168.40.71

• 192.168.40.70

• 192.168.40.72

• 192.168.40.68

• 192.168.40.74

A network administrator is adding a new LAN to a branch office. The new LAN must support 64 connected devices. What is the smallest network mask that the network administrator can use for the new network?

• 255.255.255.224

• 255.255.255.192

• 255.255.255.128

• 255.255.255.254

Refer to the exhibit. A network engineer has been given the network address of 192.168.100.0 and a subnet mask of 255.255.255.224 to subnet across the four networks shown. How many total host addresses are unused across all four subnets?

• 80

• 72

• 86

• 70

• 84