Free practice test

Network Administrator Practice Test

Check what you know about the network administrator job with 15 free questions and instant explanations.

Updated By the Career Education Institute Curriculum Team
About this practice test

15 multiple-choice questions on network administrator knowledge, safety and vocabulary. Submit to see your score and explanations, or open any question’s answer as you go. Nothing is saved or shared.

Question 1 of 15How many usable hosts are in a /26 subnet?
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Answer: 62. 2^6 − 2 = 62.

Question 2 of 15A VLAN is used to:
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Answer: Logically separate network traffic. VLANs segment networks.

Question 3 of 15Which tool shows the path packets take?
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Answer: Traceroute. Traceroute maps the route.

Question 4 of 15Before making a configuration change you should:
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Answer: Back up the config and have a rollback plan. Backups and rollback plans prevent extended outages.

Question 5 of 15Which device connects devices within the same network?
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Answer: Switch. Switches connect devices on a LAN.

Question 6 of 15Which term matches this definition: “A segment of an IP network.”
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Answer: Subnet. Subnet: A segment of an IP network.

Question 7 of 15What does “OSI model” mean?
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Answer: A seven-layer model describing network communication.. OSI model: A seven-layer model describing network communication.

Question 8 of 15Which term matches this definition: “Delay in network communication.”
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Answer: Latency. Latency: Delay in network communication.

Question 9 of 15What does “CIDR notation” mean?
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Answer: A way to express IP ranges, such as /24.. CIDR notation: A way to express IP ranges, such as /24.

Question 10 of 15Which term matches this definition: “Virtual LAN, logically separates network traffic.”
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Answer: VLAN. VLAN: Virtual LAN, logically separates network traffic.

Question 11 of 15What does “Bandwidth” mean?
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Answer: The maximum data transfer rate.. Bandwidth: The maximum data transfer rate.

Question 12 of 15Which term matches this definition: “Connects devices within a network.”
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Answer: Switch. Switch: Connects devices within a network.

Question 13 of 15What does “IP address” mean?
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Answer: A unique network address for a device.. IP address: A unique network address for a device.

Question 14 of 15Which term matches this definition: “An encrypted connection across untrusted networks.”
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Answer: VPN. VPN: An encrypted connection across untrusted networks.

Question 15 of 15What does “DNS” mean?
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Answer: Resolves names to IP addresses.. DNS: Resolves names to IP addresses.

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