Technical Implementation(Networking)

Question 1

State the definition of a <em>‘Network’ </em>

Answer 1

A network is two or more computers connected together by cables or wirelessly

Question 2

What is Connectivity?

Answer 2

Connectivity is how a connection is made and maintained between two computers in a network

Question 3

State some Advantages and Disadvantages of Cloud System

Answer 3

Advantages
- Automatic Backup, Multi Device Access, Can access data anywhere with connection
Disadvantages
- No control over security measures, may lose legal rights to original material

Question 4

A theatre company is looking to start storing their data on their shows on the cloud. Why should they choose to go for the private cloud instead of the public?

Answer 4

Private Cloud

<ul>
<li>More secure, only accessible by members of company</li>
<li>More customisable to companies needs compared to public</li>
</ul>

Question 5

What is a <em><strong>‘Hybrid Cloud’</strong></em>

Answer 5

A hybrid cloud is the combination of a public and a private cloud

Question 6

Give an example of where a company would use a hybrid cloud

Answer 6

A hybrid cloud would be used when a company wants to keep personal data secure (on the private cloud) but also give employees access to resources wherever they are(on the public cloud)

Question 7

Describe an example of a cloud based service

Answer 7

Data Storage- allows users to upload data and access data from internet connected devices
Mail Service- Users log on to the internet to access their emails via the browser
Software Updates- Ability to access most up to date version of apps via the cloud

Question 8

Describe an advantage and a disadvantage of cloud based mail servers

Answer 8

Advantage - Multi device access to emails

Disadvantage - Increased Bandwidth Consumption

Question 9

Describe an advantage and a disadvantage of cloud based data storage services

Answer 9

Advantage - Automatic backup service

Disadvantage - Large fees for companies due to ‘pay per capacity’

Question 10

Give an example of a cloud based data storage company

Answer 10

Dropbox
Google Drive
ICloud

Question 11

Describe an advantage of cloud based software updates

Answer 11

• Apps are always compatible with the cloud

Question 12

What does a web hosting service allow users to do?

Answer 12

Allows users to make their website available over the internet

Question 13

What does ISP stand for?

Answer 13

Internet Service Provider

Question 14

What is an advantage of websites like wix.com or 1and1.com (web hosting websites)

Answer 14

Allow users to put their website out there without having the knowledge of HTML/CSS/JS

Question 15

What are the three main types of web hosting?

Answer 15

Freeware
Shared web
Dedicated Hosting

Question 16

Describe freeware web hosting

Answer 16

Limited service offered by some companies which allow you to display your website for free. Often the website will include advertising for other products/companies.

Question 17

Describe shared website hosting

Answer 17

Website is placed on a web server alongside many other websites. Sharing of RAM and processor resources.

Question 18

Describe Dedicated Website Hosting

Answer 18

Each user receives their own web server and has full control over it, the best type of web hosting

Question 19

Describe some disadvantages of having your own web server on for example a raspberry pi

Answer 19

<ul>
<li>Machine has to be on 24/7</li>
<li>Incur bandwidth charges if large amount of traffic </li>
</ul>

Question 20

Describe some current trends in networking and connectivity

Answer 20

Internet Coverage
-broadband in majority of UK households
-"virtually all" of UK will have 4G connection by end of the year
Internet Connected Home appliances 
-Home applications connected to internet
-Communication between devices
-Example: Samsung Family Hub Fridge 
-Features: TV mirroring, in fridge camera, message board, daily report

Question 21

Explain why a switch is more efficient in a network than a hub

Answer 21

Hub - shares all bandwidth, broadcast messages to all of the nodes
Switch - allocate share of bandwidth, full bandwidth to individual nodes, point to point connection with nodes

Question 22

Explain the function of a router

Answer 22

A router connects nodes in a network and lets messages flow between them. It ensures that the messages get to where they need to go and chooses the best route to get to location of node.

Question 23

What is a Network Interface Card(NIC)?

Answer 23

A NIC is a card that contains the electronic circuitry to allow a computer to connect to a network by converting the data from the device into a form transmittable over the network.

Question 24

Describe what a UTP(Unshielded Twisted Pair) consists of and where it is most commonly found?

Answer 24

A UTP consists of pairs of copper wires which carry electrical binary signals. They are most commonly found in LAN setups.

Question 25

Describe what fibre optic cables are and what they are commonly used for

Answer 25

Fibre optic cables consists of a central core which carries pulsed laser beam lights. They are commonly used to connect together networking infrastructure.

Question 26

Describe Coaxial Wires and what they are commonly used for

Answer 26

Coaxial wires are single copper conducting wires with shielding braided copper They are commonly used by telecommunication companies to provide services to homes

Question 27

Describe an advantage and a disadvantage of Wireless Networks

Answer 27

``` Advantages - Not tied down to specific location - No trailing wires, so safer Disadvantages - Interference can occur - Slower data transmission ```

Question 28

State an example of where a bluetooth system is used

Answer 28

Car Hand-free systems

Question 29

Describe how bluetooth allows connection between computers and peripherals

Answer 29

Using tiny radio frequency transmittors

Question 30

How does a switch connect nodes in a network?

Answer 30

Using switching circuitry