HPE6-A86 · Question #45

What is the default subnet mask for an IPv4 Class C network?

The correct answer is C. 255.255.255.0. In IPv4, Class C networks are typically used for smaller networks. The default subnet mask for a Class C network is 255.255.255.0, which allows for 256 IP addresses in total, with 254 usable host IPs (the first address is the network address, and the last is the broadcast…

Introduction to Networking and Switching

Question

Options

A255.0.0.0
B255.255.0.0
C255.255.255.0
D255.255.255.255

How the community answered

(48 responses)

A
2% (1)
B
10% (5)
C
83% (40)
D
4% (2)

Explanation

In IPv4, Class C networks are typically used for smaller networks. The default subnet mask for a Class C network is 255.255.255.0, which allows for 256 IP addresses in total, with 254 usable host IPs (the first address is the network address, and the last is the broadcast address). Class C networks have the first three octets (the first 24 bits) dedicated to the network portion, and the last octet (8 bits) available for host addresses, hence the subnet mask 255.255.255.0.

Topics

#IPv4 addressing#subnet mask#Class C network#IP fundamentals

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