JKSSB Computer MCQs Test 18 | JKSSB Mock Test

🖥️ JKSSB Computer MCQs Test 18 – Mock Test Explanations

💾 Memory & Storage Devices

1. Hard Disk is a permanent storage device, unlike RAM or Cache.
2. RAM stores data temporarily; data is lost when power is off.
3. Cache Memory is the fastest memory located near the CPU.
4. Register is the smallest and fastest storage unit inside the CPU, but temporary.
5. CD-ROM is an optical storage device used to read data using a laser.

🖱️ Input & Output Devices

1. Printer is an output device; it prints data from the computer.
2. Scanner, Keyboard, Mouse are input devices.
3. Monitor displays information; it's an output device.
4. Touch Screen works as both input and output device.
5. Webcam is used for video conferencing.

🌐 Internet & Networking

1. HTTP stands for HyperText Transfer Protocol, used in web communication.
2. IP Address means Internet Protocol address, unique for every device.
3. WAN stands for Wide Area Network, covering large geographical areas.
4. Switch connects computers in a LAN (Local Area Network).
5. Skype is used for Voice over IP communications.
6. Amazon is an e-commerce website, example of online shopping.

⚙️ Software & Operating Systems

1. Operating System manages hardware and software resources.
2. Windows is a GUI-based Operating System.
3. Linux is a free and open-source OS.
4. MS Word is an application software used for word processing.
5. MS Access is used to create databases.
6. Google Chrome is a web browser, not an OS.
7. BIOS is system software that helps boot the computer.

🔑 Shortcuts & File Extensions

1. Ctrl + C is the shortcut for Copy.
2. F5 is used to refresh the current window.
3. .exe is an executable file, not a document file.
4. .pptx is a PowerPoint file extension.
5. .xlsx is used for Excel files.
6. .docx is for Word documents.

🧰 Hardware & Computer Basics

1. CPU stands for Central Processing Unit.
2. UPS provides backup power during electricity failure.
3. Modem converts digital signals to analog and vice versa for internet use.
4. Laptop is a portable computer.
5. Megahertz is a speed unit, not a storage unit.
6. Byte is the basic memory unit.

📚 Social Media & Security

1. Facebook is a social networking site.
2. Phishing is a fraud attempt to steal sensitive information using fake links or emails.

📝 Document & Text Editors

1. Notepad, WordPad, MS Word are text editors.
2. Excel is not a text editor; it is a spreadsheet software.

📌 Final Exam Pointers

1. Hard Disk – Permanent storage
2. RAM – Temporary storage
3. Cache – Fastest memory
4. Touch Screen – Input/Output device
5. HTTP – HyperText Transfer Protocol
6. CPU – Central Processing Unit
7. Ctrl + C – Shortcut for Copy
8. Skype – Used for Voice over IP
9. Amazon – Example of e-commerce
10. Phishing – Cyber Fraud