What is the dotted decimal equivalent of a /27 prefix length?

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Multiple Choice

What is the dotted decimal equivalent of a /27 prefix length?

Explanation:
A /27 prefix length indicates that the first 27 bits of the subnet mask are set to 1, while the remaining 5 bits are set to 0. This is commonly used for subnetting in IPv4 networks. To convert a /27 prefix length into dotted-decimal notation, we first determine how many bits correspond to the subnet mask: - The first 27 bits filled with ones can be represented in binary as: 11111111.11111111.11111111.11100000 This binary can then be divided into four octets for clarity: 1. The first three octets (255.255.255) are obtained from the first 24 bits, all of which are set to 1 (11111111). 2. The last octet consists of the remaining 5 bits set to 1 and the last 3 bits set to 0: - The first five bits: 11100 in binary represents 224 in decimal. Combining these results, the complete subnet mask for a /27 prefix length in dotted decimal notation is indeed 255.255.255.224. This subnet mask allows for 32 IP addresses (2^5 = 32), with

A /27 prefix length indicates that the first 27 bits of the subnet mask are set to 1, while the remaining 5 bits are set to 0. This is commonly used for subnetting in IPv4 networks.

To convert a /27 prefix length into dotted-decimal notation, we first determine how many bits correspond to the subnet mask:

  • The first 27 bits filled with ones can be represented in binary as:

11111111.11111111.11111111.11100000

This binary can then be divided into four octets for clarity:

  1. The first three octets (255.255.255) are obtained from the first 24 bits, all of which are set to 1 (11111111).

  2. The last octet consists of the remaining 5 bits set to 1 and the last 3 bits set to 0:

  • The first five bits: 11100 in binary represents 224 in decimal.

Combining these results, the complete subnet mask for a /27 prefix length in dotted decimal notation is indeed 255.255.255.224. This subnet mask allows for 32 IP addresses (2^5 = 32), with

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