Networking Fundamentals — Question 72

What is the default subnet mask for a Class C Internet network?

Answer options

• A. 255.255.255.252
• B. 255.255.255.240
• C. 255.255.255.192
• D. 255.255.255.0

Correct answer: D

Explanation

The correct answer is D, as the default subnet mask for a Class C network is 255.255.255.0, which allows for up to 256 addresses in the subnet. Options A, B, and C represent subnet masks for Class C networks with fewer available hosts and are not the default configuration.