Explanation: Monitor resolution is measured in Pixels (Picture Elements). It describes the number of horizontal and vertical pixels on a display screen (e.g., 1920x1080). Higher resolution means a sharper and clearer image.
82
A group of 4 bits is called:
✅ Correct Answer:Nibble
Explanation: A group of 4 bits is called a Nibble. It is half of a Byte (8 bits). In hexadecimal representation, one nibble corresponds to one hexadecimal digit. The term is a play on the word 'byte' (bite).
83
Which of the following is System Software?
✅ Correct Answer:Windows 10
Explanation: Windows 10 is an Operating System, which is a type of System Software. System software manages the computer hardware and provides a platform for applications to run. MS Word and Photoshop are Application Software meant for specific tasks.
84
WWW stands for:
✅ Correct Answer:World Wide Web
Explanation: WWW stands for World Wide Web. It is an information system where documents and other web resources are identified by URLs. It was invented by Tim Berners-Lee in 1989. It runs over the Internet.
85
The main circuit board of the computer is called:
✅ Correct Answer:Motherboard
Explanation: The motherboard is the main printed circuit board (PCB) in a computer. It connects all the crucial components like the CPU, memory, and hard drives. It also provides connectors for other peripherals. It acts as the backbone of the computer.
86
1 Kilobyte (KB) is equal to:
✅ Correct Answer:1024 Bytes
Explanation: In binary systems, 1 Kilobyte (KB) is equal to 1024 Bytes. This is because computers use the base-2 system (2^10 = 1024). However, in some commercial contexts (like hard drive manufacturing), 1 KB is treated as 1000 bytes.
87
Which one is an Output Device?
✅ Correct Answer:Speaker
Explanation: A speaker is an output device. It converts digital audio signals from the computer into sound waves that we can hear. Other output devices include monitors, printers, and projectors. Input devices send data into the computer.
88
What does CPU speed typically measured in?
✅ Correct Answer:Hertz (Hz)
Explanation: CPU speed (clock speed) is measured in Hertz (Hz). Modern CPUs are measured in Gigahertz (GHz), which means billions of cycles per second. A higher clock speed generally means the CPU can process instructions faster.
89
Which is a volatile memory?
✅ Correct Answer:RAM
Explanation: RAM (Random Access Memory) is volatile memory. It requires power to maintain the stored information. If the computer is turned off or power is lost, the data in RAM is erased. Permanent storage devices like Hard Disks are non-volatile.
90
Which device is used to print maps and large engineering drawings?
✅ Correct Answer:Plotter
Explanation: A plotter is a computer hardware device used for printing vector graphics. It is commonly used for printing large-scale engineering drawings, architectural plans, and maps. Unlike regular printers, plotters use pens to draw continuous lines.
91
The smallest unit of data in a computer is:
✅ Correct Answer:Bit
Explanation: A Bit (Binary Digit) is the smallest unit of data. It has a value of either 0 or 1. All computer data is ultimately represented as a sequence of bits. A group of 8 bits makes a Byte.
92
ROM is which type of memory?
✅ Correct Answer:Non-Volatile
Explanation: ROM (Read-Only Memory) is non-volatile memory. This means it retains its data even when the computer is turned off. It stores critical instructions like the BIOS. Unlike RAM, data in ROM cannot be easily modified.
93
Which generation of computers used Vacuum Tubes?
✅ Correct Answer:First Generation
Explanation: First-generation computers (1940-1956) used vacuum tubes for circuitry and magnetic drums for memory. They were enormous, taking up entire rooms. They generated a lot of heat and were unreliable. Examples include ENIAC and UNIVAC.
94
BIOS stands for:
✅ Correct Answer:Basic Input Output System
Explanation: BIOS stands for Basic Input Output System. It is firmware used to perform hardware initialization during the booting process. It is stored on a ROM chip on the motherboard. It loads the operating system into memory.
95
The physical parts of a computer are called:
✅ Correct Answer:Hardware
Explanation: Hardware refers to the physical components of a computer system. Examples include the monitor, keyboard, CPU, and hard drive. You can touch and feel hardware. In contrast, software is the set of instructions that tell the hardware what to do.
96
1 Byte is equal to:
✅ Correct Answer:8 bits
Explanation: One Byte is equal to 8 bits. A bit (binary digit) is the smallest unit of data in a computer (0 or 1). A nibble is equal to 4 bits. Bytes are used to represent characters like letters and numbers.
97
Which of the following is an Input Device?
✅ Correct Answer:Mouse
Explanation: A mouse is an input device used to control the cursor on the screen. It allows users to interact with the graphical user interface (GUI). Other input devices include keyboards, scanners, and microphones. Monitors and printers are output devices.
98
RAM stands for:
✅ Correct Answer:Random Access Memory
Explanation: RAM stands for Random Access Memory. It is the main memory of the computer which is volatile, meaning data is lost when power is turned off. It allows data to be read and written. It is faster than secondary storage like hard disks.
99
The 'Brain' of any computer system is:
✅ Correct Answer:CPU
Explanation: The CPU (Central Processing Unit) is called the brain of the computer. It performs all types of data processing operations. It controls the operation of all parts of the computer. It consists of the ALU, Control Unit, and Registers.
100
Who is known as the 'Father of the Computer'?
✅ Correct Answer:Charles Babbage
Explanation: Charles Babbage is considered the 'Father of the Computer'. He conceptualized and invented the first mechanical computer in the early 19th century. His designs for the Analytical Engine contained the basic elements of a modern computer. He was an English polymath.