CompTIA Tech+ Review - 10.21.2025

Elijah notices his laptop battery is dying fast while streaming videos. What’s the FIRST thing he should try?

• Replace the motherboard

• Lower screen brightness

• Change CPU system files

• Overclock the system

• Upgrade the PSU

Grace is assembling a new computer and wants to know which component acts as the “brain” of the computer. Which one should she choose?

• CPU

• GPU

• PSU

• RAM

• NVMe

Scarlett is learning about computers and comes across the term 'GUI'. What does GUI stand for?

Every time Hannah heats up her lunch in the microwave, her home Wi-Fi connection suddenly drops. What’s the likely cause?

• Faulty router

• Overheating cables

• Interference on the 2.4 GHz band

• Power surge

• DHCP conflict

Evelyn is setting up a small network at home to connect her laptop, smartphone, and printer within a few meters. What type of Area Network is she creating? P______ Area Network

David is setting up a small office and realizes he needs more wired network ports for his devices. What device should David use to expand the number of wired network ports?

• Router

• Bridge

• Hub

• Switch

• Gateway

Olivia is at work and notices that she can’t connect to the office Wi-Fi, but everyone else is able to connect without any issues. What should you check first?

• The router settings

• The firewall

• The Ethernet cable

• If airplane mode is turned on

• The IP lease time

Olivia is setting up a secure website for her business. She wants to make sure it uses the correct port for HTTPS. Which port should Olivia use?

Mia is setting up a web server and wants to make sure it can be accessed via HTTP. Which port should she configure for HTTP traffic?

Mason turns on his computer, and it boots up but there’s no display on the monitor. What’s a likely cause?

• Faulty CPU

• Corrupt OS

• Missing RAM

• Disconnected or bad GPU

• Power surge