Quiz-Session6

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

• • 62

• • 64

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

• • 255.255.255.0

• • 255.255.255.224​

• • 255.255.255.128

• • 255.255.255.240

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

• • 1

• • 2

• • 4

• • 8

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

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

A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits?

• • 255.255.255.0

• • 255.255.255.128

• • 255.255.255.224

• • 255.255.255.240

What three blocks of addresses are defined by RFC 1918 for private network use? (Choose three.)

• • 10.0.0.0/8

• • 100.64.0.0/14

• • 172.16.0.0/12

• • 169.254.0.0/16

• • 192.168.0.0/16

Which address prefix range is reserved for IPv4 multicast?

• • 240.0.0.0 – 254.255.255.255

• • 224.0.0.0 – 239.255.255.255

• • 169.254.0.0 – 169.254.255.255

• • 127.0.0.0 – 127.255.255.255

A high school in New York (school A) is using videoconferencing technology to establish student interactions with another high school (school B) in Russia. The videoconferencing is conducted between two end devices through the Internet. The network administrator of school A configures the end device with the IP address 209.165.201.10. The administrator sends a request for the IP address for the end device in school B and the response is 192.168.25.10. Neither school is using a VPN. The administrator knows immediately that this IP will not work. Why?

• • This is a loopback address.

• • This is a link-local address.

• • This is a private IP address.

• • There is an IP address conflict.