CCNA Routing: Correct Routing Match for 172.16.1.5/32

# What is the Correct Routing Match to Reach 172.16.1.5/32?

### Question

What is the correct routing match to reach 172.16.1.5/32?

### Explanations

Click on the arrows to vote for the correct answer

A. B. C. D.

A

To determine the correct routing match to reach 172.16.1.5/32, we need to identify the network address and subnet mask of the destination IP address.

The IP address 172.16.1.5/32 is a host address with a subnet mask of 255.255.255.255. This means that the address belongs to a network with a single host. Therefore, we need to find the subnet that includes only one host, which is the network address of 172.16.1.5/32.

To do this, we can use the following formula:

Performing the AND operation on the IP address and subnet mask yields:

IP Address: 10101100 00010000 00000001 00000101 (172.16.1.5) Subnet Mask: 11111111 11111111 11111111 11111111 (255.255.255.255) AND Result: 10101100 00010000 00000001 00000101 (172.16.1.5)

The result of the AND operation is the same as the IP address, indicating that the network address for 172.16.1.5/32 is 172.16.1.5.

Now that we have the network address, we need to find the correct routing match. This means we need to find the subnet that includes the network address of 172.16.1.5.

Option A (172.16.1.0/26) represents the subnet with a range of IP addresses from 172.16.1.0 to 172.16.1.63. This subnet does not include the network address of 172.16.1.5, so it is not the correct routing match.

Option B (172.16.1.0/25) represents the subnet with a range of IP addresses from 172.16.1.0 to 172.16.1.127. This subnet also does not include the network address of 172.16.1.5, so it is not the correct routing match.

Option C (172.16.1.0/24) represents the subnet with a range of IP addresses from 172.16.1.0 to 172.16.1.255. This subnet includes the network address of 172.16.1.5, so it is the correct routing match.

Option D (the default route) is a route that is used when no other route matches a destination IP address. It is not a specific subnet or network, so it is not the correct routing match for 172.16.1.5/32.

Therefore, the correct routing match to reach 172.16.1.5/32 is option C, 172.16.1.0/24.