Checkpoint Exam: IP Addressing Exam Answers

What is the prefix length notation for the subnet mask 255.255.255.224?

• /25

• /26

• /27

• /28

How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?

• 254

• 190

• 192

• 62

• 64

Which subnet mask would be used if 5 host bits are available?

• 255.255.255.224

• 255.255.255.240

• 255.255.255.248

• 255.255.255.192

A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created?

• 8

• 2

• 16

• 1

• 4

An administrator wants to create four subnetworks from the network address 192.168.1.0/24. What is the network address and subnet mask of the second useable subnet?

• subnetwork 192.168.1.64 subnet mask 255.255.255.192

• subnetwork 192.168.1.32 subnet mask 255.255.255.240

• subnetwork 192.168.1.64 subnet mask 255.255.255.240

• subnetwork 192.168.1.128 subnet mask 255.255.255.192

• subnetwork 192.168.1.8 subnet mask 255.255.255.224

How many bits must be borrowed from the host portion of an address to accommodate a router with five connected networks?

• two

• three

• four

• five

How many host addresses are available on the 192.168.10.128/26 network?

• 30

• 32

• 60

• 62

• 64

How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0?

• 1022

• 2046

• 512

• 510

• 1024

What three blocks of addresses are defined by RFC 1918 for private network use?

• A. 10.0.0.0/8

• E. 169.254.0.0/16

• B. 172.16.0.0/12

• C. 192.168.0.0/16

• D. 100.64.0.0/14

What is the broadcast address for network 172.16.16.0/22?

• 172.16.16.255

• 172.16.20.255

• 172.16.19.255

• 172.16.23.255

• 172.16.255.255