How to Answer: What are the IP classes that make up an IP address?
Advice and answer examples written specifically for a Network Engineer job interview.
13. What are the IP classes that make up an IP address?
How to Answer
A key skill every qualified network engineer should possess is to break down complex concepts into simple terms. An interviewer may ask you a question similar to this one to test your ability to do this. They may not be interested in your specific answer to this question but rather how you go about formulating it. As with most questions, keep your answers direct and be prepared for a follow-up question which the interviewer will use to explore the topic in more detail.
Written by William Swansen on September 13th, 2021
Answer Example
"An IP address has four sets or octets of numbers each with a value up to 255. These are known as IP classes. There are three types of IP classes. Each is based on the first octet of IP addresses and is classified as A, B or C. For example, If the first octet begins with 0 bit, then it is of type Class A. Class A has a range up to 127.x.x.x. If it starts with bits 10, it belongs to Class B and ranges from 128.x to 191.x. Finally, the IP class belongs to Class C if the octet starts with bits 110 and has a range from 192.x to 223.x."
Written by William Swansen on September 13th, 2021
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