COMPTIA A+ Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

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What is the slash designation for Class A networks?

/8

Class A networks have a default subnet mask of 255.0.0.0, which equates to a /8 designation. This means that the first 8 bits of the IP address are reserved for the network portion, while the remaining bits are available for host addresses. The other options, /16, /24, and /32, are used for Class B, Class C, and Class D networks respectively. Therefore, they are not the correct slash designations for Class A networks.

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/16

/24

/32

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