In a Class A IPv4 address, how many octets form the network portion?

Study for the Internet Protocol Version 4 Test. Use flashcards and multiple-choice questions, each with hints and explanations. Master the exam with confidence!

Multiple Choice

In a Class A IPv4 address, how many octets form the network portion?

Explanation:
In Class A IPv4 addressing, the network portion is defined by the default subnet mask 255.0.0.0. This mask shows that only the first octet identifies the network, while the remaining three octets are used for hosts within that network. Since an octet is 8 bits, the network portion is 1 octet (8 bits), corresponding to a /8 prefix length. So the network portion consists of one octet.

In Class A IPv4 addressing, the network portion is defined by the default subnet mask 255.0.0.0. This mask shows that only the first octet identifies the network, while the remaining three octets are used for hosts within that network. Since an octet is 8 bits, the network portion is 1 octet (8 bits), corresponding to a /8 prefix length. So the network portion consists of one octet.

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