CompTIA A+ Quiz

What is the function of a CPU in a computer?

• Connects to the internet

• Performs instructions and carries out basic operations

• Displays images and videos

• Stores data and files

Name two examples of input devices.

• Monitor, Printer

• Scanner, Webcam

• Keyboard, Mouse

• Speaker, Microphone

What is the purpose of an operating system?

• To play music and videos

• To manage computer hardware and software resources and provide services for computer programs.

• To make coffee for the user

• To provide weather updates

Explain the difference between LAN and WAN.

• LAN connects devices over a large geographical area, while WAN connects devices within a limited area.

• LAN is used for wireless connections, while WAN is used for wired connections.

• LAN connects devices within a limited area, while WAN connects devices over a large geographical area.

• LAN and WAN are the same and can be used interchangeably.

What is a firewall and how does it enhance security?

• It enhances security by slowing down network traffic and causing delays.

• It enhances security by randomly blocking network traffic without any rules.

• It enhances security by monitoring and controlling network traffic based on security rules.

• It enhances security by allowing all network traffic without any restrictions.

Describe the steps you would take to troubleshoot a computer that won't turn on.

• Check the power source, cables, hardware, and try a different power outlet or cable.

• Try turning it on and off repeatedly to see if it eventually works

• Check the weather forecast to see if it's affecting the computer

• Hit the computer to see if it will turn on

What is RAM and what is its role in a computer?

• Temporary storage of data and instructions for the CPU

• Permanent storage of data and instructions for the CPU

• A device used to input data into the computer

• A type of computer monitor

What is the difference between a virus and a worm in terms of computer security?

• A worm can only infect one computer at a time

• A virus can spread faster than a worm

• A virus and a worm are the same thing

• A virus requires a host file to attach itself to, while a worm is a standalone program that can replicate and spread independently.

Explain the concept of IP addressing in networking.

• IP addressing is a method used to assign the same numerical address to all devices on a network.

• IP addressing is a method used to assign alphabetical addresses to devices on a network.

• IP addressing is a method used to assign random numerical addresses to devices on a network.

• IP addressing is a method used to assign unique numerical addresses to devices on a network.

What are the common signs of a malware infection on a computer?

• Slow performance, frequent crashes, unusual pop-up messages, and unauthorized changes to settings or files

• Fast performance, infrequent crashes, normal pop-up messages, and authorized changes to settings or files

• Frequent crashes, fast performance, authorized changes to settings or files, and normal pop-up messages

• No performance issues, no crashes, no pop-up messages, and no changes to settings or files