Cisco 1, Module 11

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

• /26

• /28

• /27

• /25

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

• 190

• 192

• 64

• 254

• 62

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

• 255.255.255.240

• 255.255.255.0

• 255.255.255.128

• 255.255.255.224

What subnet mask is represented by the slash notation /20?

• 255.255.224.0

• 255.255.255.0

• 255.255.240.0

• 255.255.255.192

• 255.255.255.248

Which statement is true about variable-length subnet masking?

• Subnets may only be subnetted one additional time.

• Each subnet is the same size.

• The size of each subnet may be different, depending on requirements.

• Bits are returned, rather than borrowed, to create additional subnets.

Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask?

• to identify faulty frames

• to identify the host address of the destination host

• to identify the network address of the destination network

• to identify the broadcast address of the destination network

Which subnet mask would be used if exactly 4 host bits are available?

• 255.255.255.224

• 255.255.255.248

• 255.255.255.128

• 255.255.255.240

What does the IP address 172.17.4.250/24 represent?

• broadcast address

• network address

• host address

• multicast address

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

• to determine the subnet to which the host belongs

• to mask the IP address to outsiders

• to uniquely identify a host on a network

• to identify whether the address is public or private

A network administrator is variably subnetting a network. The smallest subnet has a mask of 255.255.255.224. How many usable host addresses will this subnet provide?

• 2

• 6

• 30

• 14

• 62