What is the dotted decimal equivalent of a /29 prefix length?

What is the dotted decimal equivalent of a /29 prefix length?

• A. 255.255.255.252
• B. 255.255.255.248
• C. 255.255.255.240
• D. 255.255.255.224

Answer: (B)

To find the dotted decimal equivalent of a /29 prefix length, it's important to understand what the prefix length indicates. The "/29" notation signifies that the first 29 bits of the subnet mask are set to 1, which determines the network portion of the address, while the remaining bits are set to 0 for the host portion. In binary, a /29 subnet mask is represented as follows: - The first 29 bits are '1's: 11111111.11111111.11111111.11111000 - The remaining 3 bits are '0's: 00000000 When converting this binary representation to decimal, you break it down into four octets: 1. The first three octets are all '255' in decimal (11111111). 2. The last octet has the binary representation of '11111000', which converts to 248 in decimal. Putting this together, the complete dotted decimal format for a /29 subnet mask is 255.255.255.248. This is the correct and widely accepted representation of a /29 prefix length, indicating that it supports 6 usable IP addresses within that subnet (2^(32-29) - 2). Thus,

To find the dotted decimal equivalent of a /29 prefix length, it's important to understand what the prefix length indicates. The "/29" notation signifies that the first 29 bits of the subnet mask are set to 1, which determines the network portion of the address, while the remaining bits are set to 0 for the host portion.

In binary, a /29 subnet mask is represented as follows:

• The first 29 bits are '1's: 11111111.11111111.11111111.11111000

• The remaining 3 bits are '0's: 00000000

When converting this binary representation to decimal, you break it down into four octets:

1. The first three octets are all '255' in decimal (11111111).

2. The last octet has the binary representation of '11111000', which converts to 248 in decimal.

Putting this together, the complete dotted decimal format for a /29 subnet mask is 255.255.255.248. This is the correct and widely accepted representation of a /29 prefix length, indicating that it supports 6 usable IP addresses within that subnet (2^(32-29) - 2).

Thus,