CompTIA Network+ — Practice Exam
3.0 Network Operations: practice questions
Our CompTIA Network+ bank has 61 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
A diagram shows subnets, VLAN IDs and routing between them, but not cable runs. What is it?
- Rack diagram showing device elevation
- Cable map
- Wireless heat map
- Logical network diagram
Show the answer
D. Logical network diagram — Logical diagrams describe how traffic flows and is addressed rather than physical placement.
Question 2
Why record baseline metrics for the network?
- To set the default gateway
- To license software
- So abnormal behaviour can be recognized and alerted on
- To replace change management
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C. So abnormal behaviour can be recognized and alerted on — Without a baseline you cannot tell whether today's utilization or latency is unusual.
Question 3
Which SNMP version adds authentication and encryption?
- SNMPv1
- SNMPv2c
- SNMPv2 with community strings
- SNMPv3
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D. SNMPv3 — SNMPv3 adds the user-based security model with authentication and privacy (encryption) (RFC 3414).
Question 4
What NTP stratum is a server directly connected to a reference clock such as GPS?
- Stratum 1
- Stratum 0
- Stratum 2
- Stratum 16
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A. Stratum 1 — The reference clock itself is stratum 0; servers attached to it are stratum 1 (RFC 5905).
Question 5
Which diagram shows how devices are actually cabled and where they sit in racks?
- Logical diagram
- Layer 3 routing diagram
- Data flow diagram
- Physical diagram
Show the answer
D. Physical diagram — Physical diagrams show devices, ports, cables and locations; logical diagrams show subnets, VLANs and routing.