Another way to find the first address, the last address, and the number of addresses is to represent the mask as a 32-bit binary (or 8-digit hexadecimal) number. This is particularly useful when we...

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Extracted text: Another way to find the first address, the last address, and the number of addresses is to represent the mask as a 32-bit binary (or 8-digit hexadecimal) number. This is particularly useful when we are writing a program to find these pieces of information. In Example 19.5 the /28 can be repre- sented as 11111111 11111111 11111111 11110000 (twenty-eight 1s and four Os). Find a. The first address b. The last address c. The number of addresses