Objective 2.8

220-1201

Explain networking tools and their purposes.

Objective 2.8 sits in Networking, which carries 23% of the A+ Core 1 exam. The questions below are original, written from the official objective title above, and each explanation cites the CompTIA page it rests on.

Objective title verbatim from the official objectives. CompTIA exam page ↗

A worked example

Shown solved, with the whole explanation open: this is what every question here carries.

2-8Networking

A source machine's SYN packets are retransmitted repeatedly with no reply, and a trace at the destination shows the packets never arrive. To confirm whether an intermediate switch is dropping them, a technician wants to capture traffic at that midpoint without removing the switch from service. Which tool should be used?

Use a cable tester to verify wiring on the uplink cableA cable tester confirms wiring continuity but cannot show whether live SYN packets pass through the switch.
Use a loopback plug to test the switch's uplink portA loopback plug tests a port's own send and receive path locally, not traffic transiting between two other devices.
Use a network tap to capture traffic at the midpoint switchCorrect · your answerThis is correct: a network tap mirrors traffic at the midpoint so the technician can see if the SYN packets pass through.
Use a punchdown tool to reseat wires in the patch panelA punchdown tool terminates wires in a patch panel, it is a termination tool and has no capture function.
Use a toner probe to trace the uplink cable to its jackA toner probe helps physically locate a cable run, it does not capture or show live packet flow.

Correct.

Checked against learn.microsoft.com, September 2026

Concept

When SYN packets seen leaving the source never appear in a destination trace, the failure point lies somewhere in between, so a technician needs a way to capture traffic at intermediate points along the path.

Why C

A network tap inserted inline at the suspect switch mirrors traffic passing through it to a capture device, letting the technician confirm whether the packets actually reach or leave that midpoint without taking the switch offline.

Source

You need to engage your internal network team to investigate the different hops between the source and the destination, and check whether any of the hops are potentially causing packet drops.

Microsoft Learn: Troubleshoot TCP/IP connectivity, checked September 2026
#networking-tools#network-tap#syn-retransmission

Now you: objective 2.8 questions

No account needed. The explanation opens when you answer.

Sample question 1 of 3

2-8Networking

A line of business application times out against a database server a few times an hour, with nothing useful in its own log. What should the technician collect?

Sample question 2 of 3

2-8Networking

A capture shows SYN packets arriving at a server that never answers them. Which command on that server confirms whether the port is accepting connections?

Sample question 3 of 3

2-8Networking

A technician wants to know how many times this build of Windows retries an unanswered SYN before giving up. Which command reports that setting?

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Read the sources

These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.

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