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IT Support Technician exam mistakes to avoid

Updated 15 September 2026 · 3 min read

Support technician tests cover a lot of ground, and candidates often lose marks on questions they could have answered, because of habits carried over from rushed real-world support. The mistakes below come up again and again. Each one is easy to fix once you know to look for it.

How this guide was made

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Replacing parts too soon

In real work, swapping a suspect part is sometimes the fastest fix. In a test, answers that replace hardware before testing a theory are usually wrong. If a computer will not boot, the expected next step is to check connections, listen for beep codes or test with known-good memory, not to order a new motherboard. Choose the answer that confirms the cause before spending money or time.

Skipping steps in the troubleshooting method

Questions often ask for the next step, and the right answer depends on where you are in the process. A candidate who can guess the likely cause may jump straight to the fix, missing that the question is still at the information-gathering stage. Know the order well: identify, form a theory, test it, plan and fix, verify, document.

Ignoring how many users are affected

One user who cannot reach the internet has a different problem from a whole floor. Candidates who miss the scope choose fixes at the wrong level, such as reinstalling a browser when the switch serving that floor has failed. Always look for who and how many before choosing an answer.

Choosing the technically right but rude answer

Customer service questions punish answers that fix the problem while disrespecting the user, such as taking over their computer without asking or blaming them for the fault. The correct answer solves the problem and treats the user professionally.

Forgetting safety and data protection

Questions about opening equipment, handling batteries or repairing a user's computer often hide a safety or data step. Disconnecting power, using antistatic protection, backing up data before a risky repair and wiping old drives before disposal are all expected. Candidates who focus only on the technical fix miss these marks.

Confusing similar Windows tools

Task Manager, Resource Monitor, Event Viewer, Device Manager and System Configuration each have a clear purpose, but they are easy to mix up under pressure. Write a one-line description of each tool you study, and test yourself until the right tool comes to mind instantly.

Questions where these mistakes cost marks

  1. A user is trying to install an unverified application. A prompt appears asking for administrator credentials to allow the installation. What Windows security feature is triggering this prompt?

    1. SmartScreen
    2. BitLocker
    3. UAC (User Account Control)
    4. Windows Defender Firewall
    Show the answer

    C. UAC (User Account Control)

    UAC helps prevent unauthorized changes to the operating system by prompting for elevation or credentials when administrative tasks are attempted.

    Original practice question, written against published exam objectives. Open this question

  2. A user wants to upgrade their Windows 10 Home PC to a version that supports Microsoft Hyper-V and remote desktop hosting. Which edition should they purchase?

    1. Windows 10 Enterprise
    2. Windows 10 Pro
    3. Windows 10 Education
    4. Windows 10 S
    Show the answer

    B. Windows 10 Pro

    Windows 10 Pro includes features for power users and small businesses, such as Hyper-V, BitLocker, and Remote Desktop server.

    Original practice question, written against published exam objectives. Open this question

  3. What is the main function of an operating system?

    1. To edit documents
    2. To browse the internet
    3. To manage hardware resources
    4. To run applications
    Show the answer

    C. To manage hardware resources

    The operating system manages CPU, memory, storage and devices, and schedules access to them. Running applications is a consequence of that role, not the definition of it.

    Real past-paper question; answer cross-checked against the original session. Open this question

Common questions

How can I stop rushing through easy-looking questions?

Read the last sentence of the question first so you know exactly what it asks, then read the whole stem for clues. Easy-looking questions often hide a word such as "first" or "best".

What should I do if two answers both seem reasonable?

Look for the one that follows the troubleshooting order and treats the user well. When both do, choose the less disruptive option.

Do support tests include questions on disposing of old equipment?

They can. Know that storage must be wiped or destroyed securely before disposal or reuse, and that batteries and electronic waste need proper handling rather than ordinary rubbish bins.

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