network technologies - chapter six

Question 1

what is a network ?

Answer 1

A computer network is a set of computers sharing resources located on or provided by network nodes. The computers use common communication protocols over digital interconnections to communicate with each other.

Question 2

What is a url

Answer 2

Uniform resource locator , a websites unique adress.

Question 3

What is HTML

Answer 3

Hyper text markup language , a language used to define the structure of a webpage

Question 4

What’s HTTP

Answer 4

Hypertext transfer protocol , a communications protocol that allows websites to be accessed using the internet

Question 5

The iot

Answer 5

Internet of things describes the impact of the internet on how we live and work

Question 6

Wifi

Answer 6

A wireless medium that allows devices to connect and communicate using radio waves

Question 7

Router

Answer 7

A hardware device that connects a number of networks together by either cable or wireless , to allow for data transmission.

Question 8

Bluetooth

Answer 8

A short range wireless technology that connects to devices with the purpose of communications

Question 9

Optical fibre

Answer 9

Technology that used very thin glass strands to send data and very fast transmission speeds

Question 10

Network interface card NIC

Answer 10

An electronic board fitted to a computer to allow it to be connected to a network

Question 11

File server

Answer 11

A powerful computer on a network the main purpose of which is to store users files

Question 12

Switch

Answer 12

A hardware device that allowed a computer to connect to ur using a cable to access a network.

Question 13

Router

Answer 13

Hardware device that connects a number of networks together

Question 14

Bus network

Answer 14

All computers are connected to the main cable “backbone”

Data can travel in both directions along the backbone

To add a new computer to a bus network it’s cable is attached to the backbone

Question 15

Star network

Answer 15

Computers are connected by their own cable to a file server

All data on the network must pass through the file server

An additional computer can be added by attaching it to the file server

Question 16

Ring network

Answer 16

Each computer is directly connected to two other adjacent computers to form a ring

All data travels in one direction by visiting each computer in turn until it reaches its destination

To add a new computer the cable between two existing computers must be broken and each past of the broken cable attached to the new computer

Question 17

Virus

Answer 17

A program that is designed to damage a computer system

Question 18

Advantages of networking

Answer 18

Users can save their work on the file server and retrieve it on another computer

Expensive hardware devices can be shared

Installing software updates onto the filter server allows all computers to access them

Question 19

Disadvantages of networking

Answer 19

Virus can quickly spread across the network

When a large number of users are logged in the speeds can be slow

The set of costs can be expensive

Question 20

Www

Answer 20

The worldwide web is an application that uses the internet

Question 21

The internet

Answer 21

An example of a wan

Question 22

The intranet

Answer 22

Similar to the internet but Managed my an organisation