communication and the internet

Question 1

what is a Network

Answer 1

an arrangement of computers and other devices connected together to share resources and data

Question 2

what is Local area network (LAN)

Answer 2

a network that covers a relatively small geographical area often a single site

Question 3

what is Wireless local area network (WLAN)

Answer 3

a local area network in which connected devices use high frequency radio waves to communicate

Question 4

what is Wide area network (WAN)

Answer 4

a network that covers a large geographical area it connects together two or more LANs and is usually under collective ownership the largest wide area network is the internet

Question 5

what is a Client-server network

Answer 5

a network that has at least one server to provide services to the client computer

Question 6

what is peer to peer network

Answer 6

a network that dosent have any centralized servers each computer in the network can act as client and server

Question 7

what is a Network topology

Answer 7

describes how the devices on a network are connected together

Question 8

what is the internet

Answer 8

a worldwide system of interconnected networks that enables information to be exchanged and shared

Question 9

what is communication media

Answer 9

the means by which data is transmitted between devices on a network coaxial cable , fibre optic cab,e and microwaves are all forms of communication media

Question 10

what is a Protocol

Answer 10

a set of rules that govern how communications on a network should be formatted and what data they should include

Question 11

what is Eavesdrop

Answer 11

having unauthorized sight of data being sent from one computer to another over a network

Question 12

what is Bandwidth

Answer 12

the amount of data that can be carried on a network in a given period of time

Question 13

what is a Packet

Answer 13

a small quantity of data being sent through a network the packet is labelled with the senders address the recipients address how many packets are being transmitted and the position of this packet in the complete message

Question 14

what is a Web server

Answer 14

powerful computer systems that store web pages and any multimedia that the pages might contain

Question 15

what is Network security

Answer 15

activities designed to protect a network and its data from threats such as viruses , hacker attacks , denial of service attacks , data interception and theft , and equipment failure

Question 16

what is Denial of service (DoS)

Answer 16

an attack on a network that attempts to prevent legitimate users from accessing its services

Question 17

what is Access control

Answer 17

this determines which users have access to which data , and what they are allowed to do with it

Question 18

what is Hacking

Answer 18

the act of gaining unauthorized access to a computer system and the data it contains

Question 19

what is Physical security

Answer 19

controlling access to critical parts of a network using physical methods rather that software

Question 20

what is Malware

Answer 20

short for “malicious software” it is used as a generic term for any kind of software that is designed to disrupt the use of a computer system

Question 21

what is a USB

Answer 21

Universal serial bus sockets found on most modern computer systems

Question 22

what is Cyberattack

Answer 22

any kind of malicious attack on a network- connected device

Question 23

what is Social engineering

Answer 23

any kind of attack on a computer system or network that exploits how people behave and respond to certain situations

Question 24

what is Phishing

Answer 24

attempting to get confidential information by sending a user a message that appears to come from a trustworthy person or organisation

Question 25

what is Shoulder surfing

Answer 25

Gaining access to information by watching someone enter it into a computer system

Question 26

what is Unpatched Software

Answer 26

software that hasn’t had the latest security updates applied to it making it vulnerable to attack

Question 27

Code vulnerability

Answer 27

a computer program that has been written in such a way that it creates a security issue that may be taken advantage of to gain access to the computer system or data within it

Question 28

modular testing

Answer 28

testing each block of code as it is completed to ensure the code works as expected

Question 29

audit trail

Answer 29

a record of activities that have taken place on a computer system this record is generated automatically and will record what has happened and who or what made the change

Question 30

Internet service provider (ISP)

Answer 30

an organisation that provides its customers with a connection to the internet

Question 31

router

Answer 31

a piece of networking hardware used to forward packets of data from one network to another