LAA1 - Modern technologies

Question 1

Define ad-hoc network

Answer 1

A type of wireless network where two devices can directly communicate with each other, instead of through a medium like a router or wireless access point.​

Question 2

3 benefits of ad-hoc networks

Answer 2

Scalable, flexible, limited setup

Question 3

3 disadvantages of ad-hoc networks

Answer 3

Less secure, reduced speed, often no single device has overall control

Question 4

3 ad-hoc networks

Answer 4

Personal Area Network (PAN), Open Wi-FI, Tethering or personal hotspot

Question 5

What is a personal area network?

Answer 5

Multiple devices connect around a single individual​ to create a small network. Devices tyically use wi-fi or bluetooth, uses PINs.

Question 6

What is open wi-fi?

Answer 6

Allows users to freely connect in public places, not encrypted.

Question 7

What is tethering?

Answer 7

Connects a device with a network connection to one without, uses a wired tether (USB) or wi-fi to create a personal hotspot.

Question 8

What are security issues with open networks?

Answer 8

Connections that do not require a username or password are insecure becuase they are not encrypted.

Question 9

Define encryption

Answer 9

Process of scrambling data so that it cannot be understood without a translation key.

Question 10

3 performance issues with ad-hoc networks

Answer 10

Poor signal, limited range, interupted data transfers

Question 11

5 issues affecting network availability

Answer 11

rural vs city locations, developed vs developing countries, available infrastructure, blackspots, mobile network coverage

Question 12

Define cloud storage

Answer 12

Where data is stored on remote servers and is accessed using the Internet.

Question 13

4 features of cloud storage

Answer 13

Scalability, synchronisation, availability, setting and sharing of access rights

Question 14

3 advantages of cloud storage

Answer 14

access data from any device that has an internet connection and web browser, scalable, data and its security managed by provider

Question 15

3 disadvantages of cloud storage

Answer 15

cannot access data without an internet connection, additional storage space can be expensive, no control where and how data is stored

Question 16

Define cloud computing

Answer 16

Accessing software through a browser that is running on a remote server.

Question 17

4 advantages of online applications

Answer 17

no installation, cost effective, no need for updates, accessible from anywhere at any time

Question 18

Disadvantage of online applications

Answer 18

a reliable internet connection is needed

Question 19

3 features of cloud computing

Answer 19

consistency of versions between users, single shared instance of a file, collaboration tools

Question 20

Define stakeholders

Answer 20

Those who have an interest or investment in a business.

Question 21

4 main things to consider when choosing a cloud service

Answer 21

number and complexity of features, cost, interface design, available devices

Question 22

How are cloud and traditional systems used together?

Answer 22

Device synchronisation, online / offline working, notifications

Question 23

What are 6 implications for organisations when choosing cloud technologies?

Answer 23

disaster recovery policy, security, compatibility, maintenace, getting up and running quickly, performance considerations

Question 24

What are 4 performance considerations?

Answer 24

reponsiveness, complexity of task, available devices, communication technologies