IT Essentials Quiz

What is the primary function of the CPU in a computer?

• To store data permanently

• To manage network connections

• To execute instructions

• To supply power to the computer

Which of the following operating systems is open-source?

• Windows 10

• macOS

• Linux

• iOS

What type of cable is used to connect a computer to a switch or router in a wired network?

• Coaxial

• Fiber optic

• HDMI

• Ethernet

What is the first step in troubleshooting a PC that won't start?

• Replacing the motherboard

• Checking the power supply

• Reinstalling the operating system

• Upgrading the RAM

Which of the following is a common security measure to protect data?

• Defragmenting the hard drive

• Installing an antivirus software

• Increasing the screen brightness

• Upgrading the CPU

What component is essential for a computer to connect to a wireless network?

• Sound card

• Wireless adapter

• Graphics card

• USB hub

Which operating system feature allows you to manage the system's hardware devices?

• Task Manager

• Device Manager

• Control Panel

• Command Prompt

What is the purpose of a subnet mask in networking?

• To separate the network and host portions of an IP address

• To encrypt data packets

• To detect network intrusions

• To increase the speed of the network

What should you do if a program on your PC is not responding?

• Restart the computer

• Unplug the computer

• End the task using Task Manager

• Delete the program files

Which of the following best describes 'phishing'?

• A type of malware that encrypts files and demands payment

• An attack that floods a server with traffic to make it unavailable

• A technique used to steal sensitive information by pretending to be a trustworthy entity

• A method of gaining unauthorized access to computers by exploiting software vulnerabilities