FirstTry

Objective 3.1

220-1202

Given a scenario, troubleshoot common Windows OS issues.

Objective 3.1 sits in Software Troubleshooting, which carries 23% of the A+ Core 2 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.

3-1Software Troubleshooting

Which TCP header flag, when set to 1, causes an abrupt session closure and immediate release of all connection resources?

The SYN flag, used to initiate a new TCP session between two hostsSYN starts a session during the three way handshake, it does not close one.
The RESET flag, used to abruptly terminate an existing TCP sessionCorrect · your answerCorrect: RESET forces an abrupt closure and immediate resource release.
The FIN flag, used to begin a graceful four way session closureFIN begins the four way graceful closure, which is a controlled process, not abrupt.
The ACK flag, used to acknowledge successful receipt of dataACK simply confirms receipt of data and is not used to close a session by itself.

Correct.

Checked against learn.microsoft.com, August 2026

Concept

TCP sessions can close either gracefully or abruptly, and the header flag involved determines which behavior occurs.

Why B

The RESET flag causes an immediate, abrupt closure that erases connection information right away, unlike a graceful closure.

Source

A TCP reset is an abrupt session closure, causing the immediate release of allocated resources and erasure of all connection information. This is identified by setting the RESET flag in the TCP header to 1.

Microsoft Learn: Troubleshoot TCP/IP connectivity, checked August 2026
#tcp-reset#application-crashes#recall

Now you: objective 3.1 questions

No account needed. The explanation opens when you answer.

Sample question 1 of 3

3-1Software Troubleshooting

An application abruptly closes during a file transfer. A packet capture shows the source retransmitted data, then sent a segment with the ACK and RESET flags set. What most likely caused the closure?

Sample question 2 of 3

3-1Software Troubleshooting

In Task Manager, which process name corresponds to the Microsoft Defender Antivirus service that performs real time file scanning?

Sample question 3 of 3

3-1Software Troubleshooting

After a TCP connection is established, a data packet is dropped in transit. A technician reviews a capture and sees the packet retransmitted multiple times before the source sends a session-ending segment. By default, how many retransmissions occur before this closure?

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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.

More objectives in Software Troubleshooting