Question

What does the subnet mask 255.255.255.0 tell a router?

Answer 1

Answer:

A subnet mask of 255.255. 255.0 allows for close to 256 unique hosts within the network (since not all 256 IP addresses can be used). ... This is the default subnet mask used by Class B networks and provides up to 65,536 IP addresses (256 x 256). The largest Class A networks use a subnet mask of 255.0.

Explanation:

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Answer 2

Answer:

which part of an IP address is the subnet ID and which part is host ID

Explanation:

The purpose of the part of the mask that reads 255, or all 1s in binary, is to tell a router what part of an IP address is the subnet ID.