Classful IPv4 Networks Quiz - M6

Which class of IPv4 address is used specifically for multicast?

• Class A

• Class B

• Class D

• Class E

What is the default subnet mask for a Class B network?

• 255.0.0.0

• 255.255.0.0

• 255.255.255.0

• 255.255.255.255

How many Class C networks are theoretically possible?

• 2 million

• 65,536

• 254

• 16,384

What is the binary representation of the default mask for a Class A network?

• 11111111 11111111 00000000 00000000

• 11111111 00000000 00000000 00000000

• 11111111 11111111 11111111 00000000

• 00000000 11111111 11111111 11111111

What address range is reserved and not assigned to hosts?

• 0.0.0.0 – 0.255.255.255

• 127.0.0.0 – 127.255.255.255

• Both A and B

• None of the above

The loopback address is:

• 127.0.0.1

• 0.0.0.1

• 255.255.255.255

• 192.168.0.1

A Class B address has how many host bits by default?

• 8

• 16

• 24

• 32

What is the total number of usable hosts in a Class A network?

• 2^24

• (2^24) – 2

• (2^16) – 2

• 254

Which of the following defines the numerically highest usable IP in a subnet?

• Network ID

• Broadcast address

• Last usable host

• Gateway

What is the range of valid Class B network addresses?

• 0.0.0.0 – 127.255.255.255

• 128.0.0.0 – 191.255.255.255

• 192.0.0.0 – 223.255.255.255

• 224.0.0.0 – 239.255.255.255