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Network Administrator Interview Questions

Practice for Network Administration interviews by solving TestDome questions. Our interview questions are used by more than 7,000 companies and 450,000 individual test takers.

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Need to practice your Network Administration skills for an upcoming job interview? Try solving these Network Administration interview questions that test knowledge of network security, application layers, MX records, and other skills. We’ll provide feedback on your answers, and you can use a hint if you get stuck.

These Network Administration interview questions are examples of real tasks used by employers to screen job candidates such as system administrators, network administrators, network engineers, and others that require knowledge of network infrastructure, networking protocols, and the Internet.

1. Email Spoofing

Easy  
Network Administration Email Server Network Security Spoofing Attack Public

Employees of a company are facing lots of bounced email notifications from email addresses they have never sent messages to. Select the options below which are correct for the given scenario.

(Select all acceptable answers.)

Solve Question

2. IP Privacy

Easy  
Network Administration Application Layer IP Network Security Public

Select the methods that can be used to hide your public IP address when making calls to a remote server over the internet.

(Select all acceptable answers.)

Solve Question

3. Grouping Hosts

Easy  
Network Administration Network Layer Routing Subnet Public

A computer network has hosts with the following IP addresses:

  • 124.127.64.147
  • 124.127.64.151
  • 124.127.64.155
  • 124.127.64.156

What is the routing prefix (in format: address of a network/bit-length of the prefix) for the smallest subnet that contains these four hosts?

124.127.64.___ / __

Solve Question

4. MX Record

Hard  
Network Administration Application Layer DNS MX Record Public

The email service provider has provided only an IP address for the TestDome email server - 192.0.2.0. TestDome owns the domain 'testdome.com'. Fill in the blanks for the correct DNS configuration, so that 'mail.testdome.com' points to the email server.

Type Host Name Points To
____ @ _________________
A _________________ _________________
Solve Question

If you feel ready, take one of our timed public Network Administrator Interview Questions tests:
Cybersecurity

Cybersecurity Online Test (Easy)

Network Administration

Network Administration Online Test (Easy / Hard)

System Administration

System and Network Administration Online Test (Easy / Hard)

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