Network Engineer Mock Interview
Practice 30 Network Engineer interview questions covering routing protocols, network security, and troubleshooting scenarios.
Question 22 of 30
Can you describe what a subnet mask is and how it is used in your job as a network engineer?
How to Answer
Example Answer
Community Answers
William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
This is an example of a technical question. Technical questions typically ask you about terms, technologies, processes, or procedures used in the networking industry. The interviewer may ask you to define the term or to ask about its role. They may also ask you to compare and contrast two similar terms. When responding to a technical question, keep your answer succinct and speak in common terms as much as you can. Do not assume that the interviewer has a technical background.
William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
"A subnet mask is similar to an IP address. However, it is combined with the IP address to identify two characteristics of the node. These include the extended network address and the host address. The purpose of a subnet mask is to define the node's address so traffic can be routed to the node more efficiently. The subnet mask consists of 32 bits."
Interview Coach
Jaymie
A real coach, not AI. I read every answer myself and write back with personalized feedback.
Typically responds within 24 hours.
0 - Character Count
Anonymous Answer
A subnet mask is a way to subdivide a classful network into a smaller network that best fits the number of users or devices for your particular network. Subnet masks allow you to create multiple networks and separate networks from each other, thus creating fewer broadcast storms, which can debilitate a network as it grows larger. Subnets also help organize different parts of an organization's devices or users in a more manageable and efficient manner to lessen potential problems with one large private classful network since all devices on that network would receive a broadcast if sent out to the network.
Stephanie's Feedback
This is a great start, but I suggest adding a sentence about your work as a network engineer, specifically how using a subnet mask is used within the context of a network engineer role.
Unlock All 30 Network Engineer Questions
Unlock expert responses to technical questions that reveal your infrastructure knowledge.
Get StartedJump to Question