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Why do we need subnet mask?

Fresh5 days ago

Mar 15, 202674033 views

Confidence Score0%

Problem

Since a IPv4 address already gives the information of the network and and host, why do we still need a subnet mask? The 1st Octet already specify the network class (1-127: A, 128-191: B, 192-223: C etc.). A, B, or C implies the number of octets for network (respectively, 255.0.0.0, 255.255.0.0, 255…

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Fix for: Why do we need subnet mask?

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We need a subnet mask for IPv4 addresses because the address doesn't give any information on the network size. Class sizes are not the network sizes. In practical networks all IPv4 networks are broken up into subnets that are smaller than the class …

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Why do we need subnet mask?

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1 Fix

Fix for: Why do we need subnet mask?

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