Which two prefixes would summarize the networks shown below? (Choose two.)
192.168.1.0/24
192.168.2.0/24
192.168.3.0/24
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A. B. C. D.BD
To find the summarized prefix for the given networks, we can use the following steps:
Step 1: Convert the IP addresses to binary form 192.168.1.0/24 -> 11000000.10101000.00000001.00000000 192.168.2.0/24 -> 11000000.10101000.00000010.00000000 192.168.3.0/24 -> 11000000.10101000.00000011.00000000
Step 2: Determine the number of common bits in the binary form of the IP addresses starting from the leftmost bit. 11000000.10101000.00000001.00000000 11000000.10101000.00000010.00000000 11000000.10101000.00000011.00000000
We can see that the first 22 bits are common in all three IP addresses.
Step 3: Create a new prefix using the common bits and add the number of bits that are not common to the right side of the prefix. 11000000.10101000.000000 -> /22
Therefore, the summarized prefix for the given networks is 192.168.0.0/22, which is option B.
We can also check the other options to see if any of them match the summarized prefix.
Option A: 192.168.0.0/23 This prefix includes the first three networks as well as the network 192.168.0.0/24. Therefore, it is not the summarized prefix.
Option C: 192.168.0.0/24 This prefix only includes the first network, so it is not the summarized prefix.
Option D: 192.168.0.0/21 This prefix is too broad and includes more networks than the three given networks. Therefore, it is not the summarized prefix.
In conclusion, the summarized prefixes for the given networks are 192.168.0.0/22, which is option B.