Computer Science Quiz

Question 1

What is known as the “brains” of the computer? What is its’ purpose?

Answer 1

The CPU or central processing unit. It controls all the function of the computer

Question 2

2) What is the name given to the computer’s main memory? What is it used for?

Answer 2

RAM - Random Access Memory. It stores the program code for all programs that are actively
running on a computer

Question 3

What are the wires called that connect the different parts of a computer? (name 2 types)

Answer 3

Address bus and Data bus

Question 4

What things can affect the performance of a computer? (name 3)

Answer 4

CPU speed, amount of RAM, cache size

Question 5

What is the main program on a computer called? Name three functions that it performs.

Answer 5

Operating system. Manages the storage of information on the computer, manages the
installation of new programs on the computer, provides services to the user(s) of the computer

Question 6

What two roles can a device on a network perform? What is the difference between the
two?

Answer 6

Server - allows access to a network and decides which services a client has access to
Client - requests access to a network and the use of its resources

Question 7

What functions must every computer perform?

Answer 7

Input information, store information, process information, output the results

Question 8

What is the difference between a LAN and a WAN?

Answer 8

a LAN is a network that exists over a small geographical area while a WAN exists over a large
geographical area

Question 9

Why was IPv6 invented?

Answer 9

Because the previous system, IPv4, could not produce enough unique IP addresses.

Question 10

10) What is meant by TCP/IP? What is it used for?

Answer 10

Transmission Control Protocol / Internet protocol
It manages the sending and receiving of information from one device to another on the internet.

Question 11

11) What does DNS stand for? What does it do?

Answer 11

Domain Name System. Name of the website and IP address

Question 12

12) Why do we need IP addresses?

Answer 12

We need them so that each device on a network can be seen as a unique entity ensuring that
information is delivered to the correct destination

Question 13

what’s is a bit and what is a byte

Answer 13

but is 1 or 0 byte is 8 bits

Question 14

what’s is html what is it used for

Answer 14

hyper text mark up language, the coding language that allows us to create websites

Question 15

What is ssl and tsl what do they do

Answer 15

SSL secure socket layer TSL transport layer security they both are a layer of security around communications

Question 16

Difference between world wide web and internte

Answer 16

World wide Web is series of connected documents. Internet is connected devices.

Question 17

search index

Answer 17

A database of information, elected by programs called spiders that store information about where things are on the world wide web

Question 18

6 types of input devices

Answer 18

microphone keyboard, mouse camera touchscreen sensor

Question 19

five different types of output devices

Answer 19

headphones speaker, monitor printer, 3-D printer