Computer Science/IT MCQs
Topic Notes: Computer Science/IT
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
3351
Cache memory works on the principle of ___________ .
Answer:
Locality of reference
Cache memory's effectiveness is based on the principle of "locality of reference." This principle states that computer programs tend to access the same set of memory locations repetitively over a short period (temporal locality) and also to access memory locations near the ones it just accessed (spatial locality). The cache stores this likely-to-be-used data for faster access.
3352
Which bus manages the sequencing of read and write operations?
Answer:
Control bus
The control bus sends signals that control the read/write timing.
3353
Which storage media can be rewritten by users multiple times?
Answer:
Both CD-RW disks and Zip disks
CD-RW and Zip disks allow data to be erased and rewritten multiple times.
3354
What is the best way to move around a 3D environment?
Answer:
Space mouse
Space mice are designed specifically for intuitive 3D navigation.
3355
What type of storage medium is in the form of a circular plate?
Answer:
Disk
Storage mediums are used to hold data. A disk, such as a hard disk platter, a CD, a DVD, or a floppy disk, is a flat, circular plate on which data is recorded. This is a common form of storage in computers.
3356
A __ camera is used to capture still images in digital format for use in a computer.
Answer:
Digital
A digital camera stores images electronically for easy transfer and editing.
3357
What is the output received on the display screen or in the audio or video form known as?
Answer:
Soft Copy
A soft copy is a digital version of a document or file that is viewed on a display screen, such as a monitor or phone. It is intangible, unlike a hard copy, which is a physical printout of the document on paper.
3358
The register used to keep track of the address of the next instruction in memory is the:
Answer:
Program counter
The program counter stores the address of the next instruction to execute.
3359
The two basic types of record access methods are:
Answer:
Sequential and random
Records can be accessed either one after another (sequential) or directly (random).
3360
A terminal is:
Answer:
A point where data enters or leaves the computer
Terminals are interfaces for inputting or outputting data to/from a computer.