Computer — All MCQs
4795 questions available
Q2561.The HTML tag used to automatically add some line spacing before and after the containing text block is ______?
Correct Answer: B
The HTML paragraph tag `<p>` defines a paragraph block and automatically adds margins (white space) before and after the paragraph.
Q2562.Which of the following operating systems was developed by Apple Inc.?
Correct Answer: B
Mac OS is Apple's proprietary graphical operating system designed for Macintosh computers, launched in 1984.
Q2563.A data structure whose elements are organized sequentially in a single, ordered line is known as a ______?
Correct Answer: C
A Linear Data Structure (like an array, list, stack, or queue) arranges its data elements sequentially where elements are adjacent.
Q2564.Why do we twist wires in a Twisted Pair communication cable?
Correct Answer: B
Wires are twisted to reduce electromagnetic interference (EMI) and crosstalk. This noise cancellation allows the signal to travel longer distances clearly.
Q2565.A malicious program that replicates and spreads independently over networks without user actions to harm computers is called ______?
Correct Answer: B
A Worm is self-replicating malware that spreads automatically over network infrastructure without requiring a host file or user intervention.
Q2566.The processor is the brain of the computer and is hosted in a place called _____?
Correct Answer: B
The CPU (Central Processing Unit) is mounted directly on the motherboard, which houses and connects all core computer hardware components.
Q2567.Computer language translators that translate line by line a high-level language to a low-level language are called ____?
Correct Answer: C
An interpreter translates and executes high-level source code instructions line by line, providing immediate feedback for debugging.
Q2568.How many bits of a C++ integer are taken in memory?
Correct Answer: A
In most modern C++ compilers and operating system architectures, a standard integer ('int') occupies 4 bytes or 32 bits of memory.
Q2569.To find the real-time location of people and objects on Earth, we use ______?
Correct Answer: B
GPS (Global Positioning System) utilizes a network of satellites and ground receivers to compute real-time geographic location and time information anywhere on Earth.
Q2570.One (1) KB (Kilobytes) = ______?
Correct Answer: B
In the standard binary system of data measurement, 1 Kilobyte (KB) is exactly equal to 1,024 Bytes.
Q2571.A network device that connects two or more networks is known as ______?
Correct Answer: A
A router is a network device that forwards data packets between separate computer networks, operating at Layer 3 (Network Layer) of the OSI model.
Q2572.From the listed devices, which one is used to connect one computer to another?
Correct Answer: A
A modem (Modulator-Demodulator) converts analog signals to digital (and vice versa), enabling computers to connect and communicate over telephone lines or network media.
Q2573.What does SDLC stand for?
Correct Answer: A
SDLC (Software Development Life Cycle) is a structured software engineering framework defining stages from requirement analysis to system deployment and maintenance.
Q2574.If the screen quality of the monitor is not good, then what should we increase?
Correct Answer: B
Screen resolution determines the clarity and level of detail shown on a display; higher resolution packs more pixels, making images sharper.
Q2575.What is the correct order of operations performed by a microprocessor when executing instructions?
Correct Answer: B
The basic CPU instruction cycle consists of fetching the instruction from memory, decoding it to interpret the command, and executing it.
Q2576.Select the correct order of network sizes from smallest to largest?
Correct Answer: A
The geographical hierarchy of networks ranges from LAN (Local Area Network), to MAN (Metropolitan), WAN (Wide Area), and finally the Internet (global network of networks).
Q2577.NIC stands for _______?
Correct Answer: B
NIC stands for Network Interface Card, a hardware component that allows a computer to establish a physical connection to a network.
Q2578.The measurement unit of a microprocessor's clock speed is ______?
Correct Answer: A
Microprocessor clock speed is measured in Hertz (Hz), representing the number of cycles executed per second; modern CPUs operate in Gigahertz (GHz).
Q2579.A set of instructions/steps/rules that are followed to solve a problem is called _____?
Correct Answer: C
An algorithm is a step-by-step logical sequence of instructions or rules followed to solve a problem or perform computations.
Q2580.From the following listed devices, which one can store more data than the others?
Correct Answer: D
A Hard Disk Drive (HDD) or Solid State Drive (SSD) is the primary secondary storage device, holding vastly larger volumes of data (GBs to TBs) compared to RAM, ROM, or flash drives.