1.4 Wired and Wireless Networks

Question 1

Give two advantages of using a client-server network over a peer-peer network

Answer 1

1. Central Control over security

2. Easier maintenance and upgrades

Question 2

Give two disadvantages of using a client-server network over a peer-peer network

Answer 2

1. Failure of the server will render all of the client computers useless
2. Can cost more

Question 3

What is meant by hardware?

Answer 3

The physical parts of a computer system

Question 4

What physical hardware is required for a computer to connect to the internet

Answer 4

Network interface card

Question 5

What is the purpose of the router

Answer 5

Routers are located at places where different networks meet and forward data along the best route through the network

Question 6

What is a switch?

Answer 6

Switches are hardware devices in a network that connect two devices with efficient high speed transition

Question 7

What hardware does the network need in order to connect to it wirelessly

Answer 7

A wireless access point

Question 8

Three ways of transmitting data across a network, for each give an advantage and disadvantage

Answer 8

1.Ethernet Cable
Adv - Cheap and easy
Dis - Bulky and hard to use in large areas
2.Fibreoptic cable
Adv - Faster and more reliable
Dis - Much more expensive
3.Wireless
Adv -Easy and flexible 
Dis - Poses security and speed risks

Question 9

What is the internet

Answer 9

The internet is a worldwide collection of computer networks

Question 10

What two items of hardware are needed to connect to the internet?

Answer 10

1. Modem

2. Router

Question 11

What is the function of a router and modem

Answer 11

1. Convert between digital and analogue signals

2. Routers manage the transition of data packets to the appropriate locations

Question 12

What’s the difference between WWW and Internet

Answer 12

The internet is the underlying network infrastructure of all of the web pages that are on the WWW

Question 13

What’s the role of a DNS server and how does it relate to IP addresses

Answer 13

The DNS matches up IP addresses to website addresses. This allows users to access webpages.

Question 14

What type of network is used to deliver web pages to users

Answer 14

Client-Server

Question 15

What is cloud storage and why is it useful?

Answer 15

Storage that is kept on a server, useful as you can access it on multiple devices

Question 16

Why would someone not want to use cloud storage

Answer 16

It relies on the data storage company to keep your data secure

Question 17

Describe the concept of a virtual network

Answer 17

A network of computers tat are connected together on a larger network of computers

Question 18

One reason why a company with employees all around the world would want a virtual network

Answer 18

They can access the files of the “office” from anywhere in the world

Question 19

Why would a company that deals with private information may want to use a virtual network

Answer 19

Only trusted people with access to the network can see the data on the network

Question 20

Why would a school want to use a virtual private network

Answer 20

To separate teachers and students workplaces, and so they can access from home