Comptia A+ Final Tri 2

What is the function of a CPU in a computer?

• To brew coffee for the user

• To play music through the speakers

• To control the computer's lighting system

• To execute instructions, perform calculations, and manage data flow within the computer system.

Which operating system is known for its user-friendly interface and is widely used in personal computers?

• iOS

• Windows

• Linux

• MacOS

What is the purpose of a router in a network?

• To bake cookies

• To play music

• To water plants

• To forward data packets between computer networks.

Which of the following is used to identify an individual TCP/IP node?

• Subnet Mask

• Default Gateway

• VPN

• None

Name one common troubleshooting technique for resolving network connectivity issues.

• Restarting network devices

• Singing to the router

• Changing the font size on your computer

• Blowing on the network cables

What are the main components of a mobile device?

• Microphone, projector, CD drive, headphone jack

• Touchpad, stylus, USB port, Ethernet cable

• Display screen, battery, processor, memory, storage, camera, sensors, connectivity modules

• Keyboard, mouse, printer, speakers

Explain the concept of RAM in a computer system.

• RAM is a type of display that shows output in a computer system

• RAM in a computer system is a type of memory that stores data and machine code currently being used by the computer. It is volatile and can be accessed randomly.

• RAM is a type of processor that executes instructions in a computer system

• RAM is a type of storage that permanently stores data in a computer system

What is a firewall and how does it enhance security?

• A firewall enhances security by encrypting all network traffic.

• A firewall enhances security by slowing down network performance.

• A firewall enhances security by monitoring and controlling network traffic based on security rules, acting as a barrier between trusted and untrusted networks.

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

What would be the best way to troubleshoot a computer that is not powering on?

• Check if the computer is plugged in

• Update the computer's software

• Follow the troubleshooting steps for a computer that is not powering on.

• Reboot the computer

What are the different types of mobile operating systems available in the market?

• Blackberry

• Symbian

• Firefox OS

• iOS, Android, Windows Phone