What is the most specific aggregate prefix for the following 3 subnets?

What is the most specific aggregate prefix for the following 3 subnets?

• A. 134.234.123.0/25
• B. 134.234.123.0/24
• C. 134.234.123.128/24
• D. 134.234.122.0/23

Answer: (B)

To determine the most specific aggregate prefix for the given subnets, it’s essential to understand how prefix aggregation works in routing. An aggregate prefix summarizes multiple subnets into a single entry that still encompasses all of the original addresses. Let's analyze the provided subnets: 1. The aggregate prefix has to cover all the addresses, so we should look for a prefix that can include the starting point and end point of the listed subnets while minimizing the range. 2. The prefix length is crucial since a longer prefix (more bits) is more specific than a shorter one. Thus, prefixes with a greater number of bits are considered more specific. When considering the three subnets as per the answer provided: - The prefix 134.234.123.0/25 includes addresses from 134.234.123.0 to 134.234.123.127. - The prefix 134.234.123.0/24 includes addresses from 134.234.123.0 to 134.234.123.255. This prefix can encompass a broader range than the first option, covering up to the full 134.234.123.0/24 subnet. - The prefix 134.234.123.128/24 begins

To determine the most specific aggregate prefix for the given subnets, it’s essential to understand how prefix aggregation works in routing. An aggregate prefix summarizes multiple subnets into a single entry that still encompasses all of the original addresses.

Let's analyze the provided subnets:

1. The aggregate prefix has to cover all the addresses, so we should look for a prefix that can include the starting point and end point of the listed subnets while minimizing the range.

2. The prefix length is crucial since a longer prefix (more bits) is more specific than a shorter one. Thus, prefixes with a greater number of bits are considered more specific.

When considering the three subnets as per the answer provided:

• The prefix 134.234.123.0/25 includes addresses from 134.234.123.0 to 134.234.123.127.

• The prefix 134.234.123.0/24 includes addresses from 134.234.123.0 to 134.234.123.255. This prefix can encompass a broader range than the first option, covering up to the full 134.234.123.0/24 subnet.

• The prefix 134.234.123.128/24 begins