Classful Subnetting

What is the default subnet mask for a Class B IP address?

• 255.0.0.0

• 255.255.0.0

• 255.255.255.0

• 255.255.255.255

What class is the IP address 165.245.0.1?

• Class A

• Class B

• Class C

• Class D

How is a network address determined for a subnet?

• By setting all network bits to zero

• By setting all host bits to zero

• By setting all bits to one

• By setting the first octet to zero

What is the definition of a network broadcast address?

• The first IP address of a subnet.

• One number higher than the network address.

• The last IP address of a subnet.

• One number lower than the broadcast address.

Given an IP address of 10.74.222.11 and a Class A subnet mask, what is the first usable host address?

• 10.0.0.0

• 10.0.0.1

• 10.255.255.255

• 10.255.255.254