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Question

How many class A, B and C network IDs can exist?

A
2113658
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B
16382
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C
126
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D
128
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Solution

The correct option is A 16382

16382 class A, B and C network IDs can exist.

The network ID is the network portion of an IP address. For a class A network, the network address is the first byte of the IP address. For a class B network, the network address is the first two bytes of the IP address. ... The network number is also used by routers to forward packets to the right network.

Network identity (network ID) is a portion of the IP address that is used to identify individuals or devices on a network such as a local area network or the Internet. ... The IP address assigned to the host has a network ID part, which identifies what IP subnet that host is on.

An IPv4 address class is a categorical division of internet protocol addresses in IPv4-based routing. ... Class A IP addresses, where the 1st bit is 0, encompass the range of 0.0.0.0 to 127.255.255.255. This class is for large networks and has 8 bits for network and 24 bits for hosts.

Class C Network Definition. A Class C network is any network in the 32-bit, IPv4 addressing scheme whose first three bits, the so-called high-order bits, are 110. ... This makes possible a maximum of 2,097,152 networks, each of which can have a maximum of 254 hosts.


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