CompTIA A+ Core 1 220-1201 - Domain 5 Hardware and Network Troubleshooting

By Jordan Blake · Updated May 25, 2026

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Passing Score75%
Format100% Multiple Choice
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Question catalog for this preview

Catalog listing of the 5 preview questions for this quiz.

Question 1

A technician is troubleshooting a SOHO router. Users report intermittent internet drops. The technician logs into the router and notices the WAN IP is showing as 192.168.100.x (a private IP). What is the MOST likely issue?

Answer choices

  • A. The router needs a firmware update

  • B. The router is receiving a private IP from the ISP — this indicates the ISP is using CGNAT (Carrier-Grade NAT), or the WAN connection type may be misconfigured

  • C. The router's firewall is blocking internet traffic

  • D. The DNS servers are misconfigured

Question 2

A technician replaces a printer's toner cartridge and now the prints have smearing and toner rubbing off easily. What component is MOST likely also failing?

Answer choices

  • A. The drum unit

  • B. The fuser assembly

  • C. The print head

  • D. The paper feed rollers

Question 3

A printer is producing pages where all content is shifted 2 inches to the right and cut off at the edge. The issue occurs on all print jobs from multiple computers. What should the technician adjust?

Answer choices

  • A. Update the print driver on all computers

  • B. Check and adjust the paper size and margin settings in the printer's configuration

  • C. Replace the printer's toner cartridge

  • D. Clean the print heads

Question 4

A user reports their wireless mouse and keyboard are intermittently dropping connectivity. Replacing the batteries didn't help. Another wireless device placed near the workstation works fine. What is the MOST likely cause?

Answer choices

  • A. RF interference from another 2.4 GHz device (microwave, Wi-Fi router, other wireless accessories)

  • B. The USB ports on the workstation are failing

  • C. The mouse and keyboard need a firmware update

  • D. The workstation's operating system needs updating

Question 5

A technician notices a laptop display has a purple/pink tint on the left side that fades toward the right side of the screen. What is the MOST likely cause?

Answer choices

  • A. Incorrect color temperature setting

  • B. Physical damage to the LCD panel layers, or a failing LCD panel

  • C. Outdated GPU driver

  • D. Incorrect color profile in Windows