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Computer Science Concepts
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Computer Science Concepts
Computer Science Concepts
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1
Question
What is a Scanner?
Answer
A scanner sees images and converts printed text or pictures into electronic codes that can be understood by the computer.
2
Question
What are the types of scanners?
Answer
The types of scanners include flatbed scanners, sheet-fed scanners, handheld scanners, and film scanners.
3
Question
What is a Flowchart?
Answer
A flowchart is a visual representation of a process, system, or algorithm. It uses standardized symbols connected by arrows to illustrate the sequence of steps, decisions, and operations involved in completing a task or solving a problem.
4
Question
What is a DBMS?
Answer
Database management systems (DBMS) are computer software applications that interact with the user, other applications, and the database itself to capture and analyze data.
5
Question
What is the purpose of a general-purpose DBMS?
Answer
A general-purpose DBMS is designed to allow the definition, creation, querying, updating, and administration of databases.
6
Question
Name some well-known DBMSs.
Answer
Well-known DBMSs include MySQL, PostgreSQL, Microsoft SQL Server, Oracle, Sybase, and IBM DB2.
7
Question
What is Cyber security?
Answer
Computer security, also known as cybersecurity or IT security, is security applied to computing devices such as computers and smartphones, as well as computer networks such as private and public networks, including the whole Internet.
8
Question
What does cybersecurity include?
Answer
Cybersecurity includes all the processes and mechanisms by which digital equipment, information, and services are protected from unintended or unauthorized access, change, or destruction.
9
Question
What is HDD defragmentation?
Answer
Defragmentation is the process of reorganizing the data stored on the hard drive so that related pieces of data are placed together in contiguous blocks.
10
Question
How does defragmentation improve computer performance?
Answer
Defragmentation can improve computer performance by allowing the hard drive to access and retrieve files more efficiently.
11
Question
What is the difference between CD and DVD?
Answer
A CD can hold 650-700 MB, whereas a basic DVD can hold 4.7 GB. A DVD can be double-sided and dual-layer, with a capacity of 17 GB.
12
Question
What is an algorithm?
Answer
An algorithm is a step-by-step specification or set of instructions that describes how to solve a given problem or accomplish a specific task.
13
Question
What is the difference between low and high level programming?
Answer
Low-level programming languages are closer to machine code and offer more control over hardware but are harder to write and understand, while high-level languages are more user-friendly and abstract.
14
Question
What is a database?
Answer
A database is an integrated and organized collection of logically related records or files that are stored in a computer system.
15
Question
What types of monitors are there?
Answer
Types of monitors include Cathode Ray Tube (CRT) Monitors, Flat Panel Monitors, Touch Screen Monitors, LED Monitors, OLED Monitors, DLP Monitors, TFT Monitors, and Plasma Screen Monitors.
16
Question
What types of CDs are there?
Answer
CDs come in three formats: CD-ROMs (read-only memory), CD-R (recordable discs), and CD-RW (rewritable discs).
17
Question
What are Computer networks?
Answer
A computer network is a collection of computers and other hardware interconnected by communication channels that allow sharing of resources and information.
18
Question
Give an example of application software and its use/features.
Answer
Microsoft Word is an application used to create and edit text documents featuring text formatting, spell check, templates, and support for collaboration.
19
Question
Give an example of social software and its features.
Answer
Facebook is a social software that allows users to create profiles, share posts, and interact with friends, featuring news feeds, messaging, groups, and privacy settings.
20
Question
What is ergonomics?
Answer
Ergonomics is a field of study that attempts to reduce strain, fatigue, and injuries by improving product design and workspace arrangement.
21
Question
What are virtual worlds?
Answer
Virtual Worlds are services where it is possible to meet and interact with other people in a virtual environment, with users manipulating avatars to engage through chat or voice.
22
Question
What are collaborative software/groupware?
Answer
Collaborative software, also known as groupware, allows users to share data such as files and photos for project work or school work.
23
Question
What are optical discs?
Answer
Optical discs store data at much higher densities than magnetic disks, making them ideal for multimedia applications.
24
Question
What are magnetic storage devices?
Answer
Magnetic storage devices use magnetized particles to store data on disks or tapes, examples include magnetic tapes, floppy disks, and hard drives.
25
Question
What does CD-ROM stand for?
Answer
CD-ROM stands for Compact Disc Read-Only Memory.
26
Question
What does DVD stand for?
Answer
DVD stands for Digital Video Disc or Digital Versatile Disc.
27
Question
What kind of technology is used by CD-ROM disks and drivers?
Answer
CD-ROM disks and drives use optical technology, with data stored in the form of tiny pits and lands read by a laser beam.
28
Question
Have you heard of HD-DVD and Blue-ray discs?
Answer
HD-DVD and Blu-ray are high-definition optical disc formats designed for high-quality video, audio, and data storage.
29
Question
Do computers understand human languages?
Answer
Computers cannot directly understand human languages; they only understand machine code, which consists of binary code 1s and 0s.
30
Question
What are the differences between low-level and high-level languages?
Answer
Low-level languages offer greater control over hardware and are harder to understand, while high-level languages are more user-friendly and abstract.