2.1.2 Networks including the internet

Question 1

What is cloud computing?

Answer 1

1) Storing data in the cloud, instead of locally.
2) Using applications in the cloud as opposed to installation (SaaS).
Eg. Google Drive

Question 2

Benefits of cloud computing.

Answer 2

• Easily scalable
• Cost saving
• Automatic saving

Question 3

Drawbacks of Cloud computing.

Answer 3

• Requires trust in a 3rd party.
• Can be more prone to security breaches/hacks.
• Depends on active internet connection.

Question 4

What is a public cloud?

Answer 4

Cloud in which the services and infrastructure are provided off-site over the internet by a third party.

Question 5

What is a private cloud?

Answer 5

Cloud in which the services and infrastructure are maintained on a private network dedicated solely to your organisation.

Question 6

Benefits of a wireless network.

Answer 6

• Devices can be more mobile, does not need to be connected.
• Easier to set up, no cables needed.
• Adding new devices can be easier.

Question 7

Drawbacks of a wireless network.

Answer 7

• Signal degration, inconsistent coverage due to obstacles.
• More prone to hacking by unauthorizd users.
• Interference, interference with other wireless technology can cause poor communication.

Question 8

Benefits of a wired network.

Answer 8

• Speed, generally faster than wireless networks.
• No interference, signal is not influenced by other connections.
• Security, more protected from unauthorised access.

Question 9

Drawbacks of a wired network.

Answer 9

• Not flexible, lack of mobility.
• More complex installation, wires.
• Trip hazards.

Question 10

Benefits of a copper cabling.

Answer 10

• Cheaper, less expensive to install.

- fFlexible, therefore easier to install.

Question 11

Drawbacks of copper cabling.

Answer 11

• Prone to electromagnetic interference.

- vulnerable to overheating.

Question 12

Benefits of fibre-optics.

Answer 12

• Have greater bandwidth.
• Can transmit over long distances.
• Immune to electromagnetic interference.

Question 13

Drawbacks of fibre-optics.

Answer 13

• Expensive, expensive to install.

- Fragility, ususally made of glass.

Question 14

Benefits of radio-waves.

Answer 14

• Wireless, no need for cabling / faster installation.

- Can travel over large distances.

Question 15

Drawbacks of radio-waves.

Answer 15

• Affected by radio waves with similar frequencies.

- Lower frequency, less data can be transmitted.

Question 16

Benefits of microwaves/satellites.

Answer 16

• Larger bandwidth, can transmit more information.

- Wireless, increased flexibility.

Question 17

Drawbacks of microwaves/satellites.

Answer 17

• Expensive to setup

- Physical obstacles may interfere with signal.