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Interview Questions Answer

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Interview Questions

Interview Questions And Answer


1. What is an operating system, and can you name a few types?

Answer:

An operating system (OS) manages computer hardware and software resources. Types include Windows (e.g., Windows 10), macOS (e.g., macOS Monterey), and Linux (e.g., Ubuntu).

2. What is the difference between RAM and ROM?

Answer:

RAM (Random Access Memory) is volatile memory used for temporary data storage while a computer is on, like when editing a document in Microsoft Word. ROM (Read-Only Memory) is non-volatile and stores permanent instructions, like the BIOS that boots up the computer.

3. Can you explain what a CPU does?

Answer:

The CPU (Central Processing Unit) is the brain of the computer. It performs calculations and executes instructions. When you open a program like a web browser, the CPU processes the instructions needed to display the webpage.

4. What are input and output devices? Provide examples.

Answer:

Input devices send data to the computer (e.g., keyboard, mouse), while output devices receive data from the computer (e.g., monitor, printer). Typing on a keyboard inputs text into a word processor, while the monitor displays the document.

5. What is the difference between software and hardware?

Answer:

Hardware refers to the physical components of a computer, like the hard drive or motherboard. Software refers to the programs and applications that run on the computer, like Microsoft Office or Adobe Photoshop.

6. Can you explain what an IP address is and its purpose?

Answer:

An IP address is a unique identifier for a device on a network. It enables devices to communicate with each other over the internet. For example, 192.168.1.1 could be the IP address of a home router.

7. What is a network, and what are the main types?

Answer:

A network is a group of interconnected computers that can share resources. Main types include LAN (Local Area Network) used in homes or offices, and WAN (Wide Area Network) like the internet.

8. What is the function of a hard drive?

Answer:

A hard drive stores data permanently, such as the operating system, applications, and files. For instance, all your photos and documents are saved on your computer’s hard drive.

9. What is a firewall, and why is it important?

Answer:

A firewall is a security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It’s important because it helps protect your computer from unauthorized access and cyber threats. For example, it can block malicious websites or hackers from accessing your network.

10. What is cloud computing?

Answer:

Cloud computing delivers computing services (like storage, databases, and servers) over the internet. Services like Google Drive and Dropbox allow you to store and access files online, rather than on your local hard drive.

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