- The ruler can be used to align which of the following in MS Word?
A. Text
B. Graphics
C. Other elements
D. All of the above
(Ans: D) - Output devices are used to transfer information to the _______.
A. CPU
B. User
C. RAM
D. Hard Disk
(Ans: B) - In a network, MAC stands for:
A. Medium Access Card
B. Media Access Control
C. Media Address Control
D. Media Access Card
(Ans: B) - Which of the following is a volatile memory?
A. ROM
B. Hard Disk
C. RAM
D. Flash Drive
(Ans: C) - Which of the following is an input device?
A. Scanner
B. Monitor
C. Printer
D. Speaker
(Ans: A) - What is the full form of URL?
A. Uniform Resource Locator
B. Universal Resource Link
C. Unique Reference Link
D. Uniform Reference Locator
(Ans: A) - Which key deletes a character to the left of the cursor?
A. Delete
B. Backspace
C. Ctrl
D. Shift
(Ans: B) - Which protocol is used to transfer files over the internet?
A. HTTP
B. FTP
C. SMTP
D. TCP
(Ans: B) - Which of the following is an example of system software?
A. MS Word
B. Photoshop
C. Windows OS
D. Chrome
(Ans: C) - What does CPU stand for?
A. Central Processing Unit
B. Computer Processing Unit
C. Central Program Unit
D. Control Processing Unit
(Ans: A) - Which part of a computer is called the ‘brain’?
A. RAM
B. CPU
C. Hard Drive
D. Monitor
(Ans: B) - What does HTML stand for?
A. High Text Markup Language
B. Hyperlink Text Markup Language
C. HyperText Markup Language
D. Hyper Transfer Markup Language
(Ans: C) - Which of the following is NOT an operating system?
A. Windows
B. Linux
C. macOS
D. Oracle
(Ans: D) - What is the function of a firewall?
A. Virus Detection
B. Network Security
C. System Optimization
D. Data Recovery
(Ans: B) - Which shortcut key is used to copy selected text?
A. Ctrl + C
B. Ctrl + X
C. Ctrl + V
D. Ctrl + Z
(Ans: A) - Which of the following is a web browser?
A. Windows
B. Chrome
C. Linux
D. Photoshop
(Ans: B) - Which memory has the fastest access time?
A. RAM
B. Hard Drive
C. Cache Memory
D. ROM
(Ans: C) - Which command is used to reboot the computer?
A. Ctrl + Alt + Del
B. Ctrl + R
C. Alt + F4
D. Shift + Esc
(Ans: A) - Which one of these is an open-source operating system?
A. Windows
B. Linux
C. macOS
D. DOS
(Ans: B) - What is the full form of IP in networking?
A. Internet Protocol
B. Internal Program
C. Inter Process
D. Information Processing
(Ans: A) - Which of the following is NOT a type of computer bus?
A. Data Bus
B. Control Bus
C. Address Bus
D. Signal Bus
(Ans: D) - Which scheduling algorithm is used in real-time operating systems?
A. FCFS
B. SJF
C. Round Robin
D. Preemptive Priority Scheduling
(Ans: D) - What is the primary function of a Kernel in an OS?
A. User Interface Management
B. Memory and Process Management
C. Data Encryption
D. Internet Browsing
(Ans: B) - Which of the following is an asymmetric encryption algorithm?
A. AES
B. DES
C. RSA
D. Blowfish
(Ans: C) - Which networking device operates at the Data Link Layer (Layer 2) of the OSI model?
A. Router
B. Switch
C. Hub
D. Gateway
(Ans: B)
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EXPLANATION FOR CBSE SBI SCI quiz
Explanations & Related Facts for Computer GK Quiz
1. Explanation: The ruler in MS Word helps in adjusting margins, indents, tab stops, and positioning text, graphics, and other elements precisely.
Related Fact: The ruler can be enabled from the “View” tab in MS Word.
2. Explanation: Output devices display or present processed information to the user. Examples include monitors, printers, and speakers.
Related Fact: Output devices convert digital data into a human-readable format.
3. Explanation: MAC (Media Access Control) is a unique identifier assigned to network interfaces for communication in a local network.
Related Fact: A MAC address consists of 12 hexadecimal characters (e.g., 00:1A:2B:3C:4D:5E).
4. Explanation: RAM (Random Access Memory) is a temporary memory that loses data when power is turned off, making it volatile.
Related Fact: DDR4 and DDR5 are common types of RAM, used in modern computers.
5. Explanation: An input device sends data to a computer for processing. A scanner converts physical documents into digital format.
Related Fact: Other input devices include keyboards, mice, microphones, and joysticks.
6. Explanation: A URL (Uniform Resource Locator) is the web address of a website, helping users locate and access online resources.
Related Fact: A URL includes a protocol (HTTP/HTTPS), a domain name, and a path.
7. Explanation: The Backspace key deletes the character to the left of the cursor, commonly used for text editing.
Related Fact: The Delete key removes characters to the right of the cursor.
8. Explanation: FTP (File Transfer Protocol) is used to transfer files between a client and a server over the internet.
Related Fact: SFTP (Secure File Transfer Protocol) is a secure version of FTP.
9. Explanation: System software includes operating systems like Windows OS, which manage hardware and provide a platform for applications.
Related Fact: Other system software includes Linux, macOS, and Unix.
10. Explanation: The CPU (Central Processing Unit) is the main processing unit of a computer that executes instructions.
Related Fact: Modern CPUs have multiple cores (Dual-Core, Quad-Core, etc.) for improved performance.
11. Explanation: The CPU is called the brain of a computer because it performs all processing tasks.
Related Fact: The first commercial CPU was the Intel 4004, released in 1971.
12. Explanation: HTML (HyperText Markup Language) is used to create web pages and define their structure.
Related Fact: HTML5 is the latest version, supporting multimedia content without additional plugins.
13. Explanation: Oracle is a database management system, not an operating system like Windows, Linux, or macOS.
Related Fact: Operating systems manage system resources, while databases store and manage data.
14. Explanation: A firewall monitors and controls incoming and outgoing network traffic to protect against cyber threats.
Related Fact: Firewalls can be hardware-based (routers) or software-based (Windows Defender Firewall).
15. Explanation: Ctrl + C is the standard keyboard shortcut for copying text or files in most operating systems.
Related Fact: Ctrl + X is used to cut, and Ctrl + V is used to paste content.
16. Explanation: Web browsers like Chrome allow users to access and navigate websites on the internet.
Related Fact: Other popular browsers include Firefox, Edge, Safari, and Opera.
17. Explanation: Cache memory is a small, high-speed memory that stores frequently used data for quick access by the CPU.
Related Fact: Cache memory has different levels (L1, L2, L3) to improve performance.
18. Explanation: Ctrl + Alt + Del opens the Task Manager, allowing users to restart the system or end processes.
Related Fact: In macOS, the equivalent shortcut is Command + Option + Esc.
19. Explanation: Linux is an open-source operating system, meaning its source code is freely available for modification and distribution.
Related Fact: Popular Linux distributions include Ubuntu, Fedora, and Debian.
20. Explanation: IP (Internet Protocol) is responsible for addressing and routing data packets across networks.
Related Fact: IPv4 uses 32-bit addresses, while IPv6 uses 128-bit addresses for more devices.
21. Explanation: Data Bus, Control Bus, and Address Bus are real types of computer buses, but “Signal Bus” is not.
Related Fact: Buses help transfer data between CPU, memory, and peripherals.
22. Explanation: Preemptive Priority Scheduling allows high-priority tasks to interrupt lower-priority ones, used in real-time OS.
Related Fact: Real-time operating systems are used in embedded systems, aviation, and robotics.
23. Explanation: The Kernel is the core part of an OS that manages memory, processes, and hardware interaction.
Related Fact: Linux Kernel is open-source and widely used in servers and Android devices.
24. Explanation: RSA (Rivest-Shamir-Adleman) is an asymmetric encryption algorithm used for secure data transmission.
Related Fact: Asymmetric encryption uses a public key for encryption and a private key for decryption.
25. Explanation: A switch operates at Layer 2 (Data Link Layer) of the OSI model, forwarding data based on MAC addresses.
Related Fact: Routers work at Layer 3 (Network Layer), while hubs operate at Layer 1 (Physical Layer).
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