What is the first octet number for a Class B address?

The first octet of a Class B address offers 64 possibilities, 128 to 191. The second octet has 256 possibilities, 0 to 255. That yields 16,384 addresses, or 25 percent of the total IP space.

What is a Class B address?

Class B Address An IP address which belongs to class B has the first two bits in the first octet set to 10, i.e. x.x. The default subnet mask for Class B is 255.255. x.x. Class B has 16384 (214) Network addresses and 65534 (216-2) Host addresses.

How many blocks are there in Class B?

The total addresses in class B are 1,073,741,824 which are divided into 16,384 blocks and each block has 65,536 addresses.

How many bits is a Class B address?

16 bits
A class B network number uses 16 bits for the network number and 16 bits for host numbers.

What is class full address?

The class of IP address is used to determine the bits used for network ID and host ID and the number of total networks and hosts possible in that particular class. Each ISP or network administrator assigns IP address to each device that is connected to its network.

Which is the host portion of a Class B address?

A Class B address has the first and second octets as the network portion and the third and fourth octets as the host portion. A Class B network mask is shown as 255.255.0.0. A Class C address has the first, second, and third octet as the network portion and the last octet as the host portion.

How many bits does a Class B network address have?

Class C network addresses only have eight bits to manipulate into subnets. However, a Class B has 16 bits to play with. This will allow more subnets with more hosts per subnet than a Class C network ever could.

When to use Class A or Class B IP addresses?

Class A addresses are used for networks that have more than 65,536 hosts (actually, up to 16,581,375 hosts!). In a class B address, the first two octets are the network portion, so the class B address of, 172.16.122

What is the first bit of Class A address?

Class A Address The first bit of the first octet is always set to 0 (zero). Thus the first octet ranges from 1 – 127, i.e. Class A addresses only include IP starting from 1.x.x.x to 126.x.x.x only.