network security

Question 1

access control

Answer 1

determines the facilities a user has access to

Question 2

what sort of facilities does the access control determine the use of?

Answer 2

• software
• email
• internet
• documemts and data
• the ability to install and/or remove software
• the ability to maintain other users’ accounts

Question 3

give an example of when access control would be needed

Answer 3

an office worker might need access to productivity software, email and the internet but not to install software or access to other users’ accounts. Restriction limits the actions a user can take, reducing the potential threats

Question 4

what is a firewall?

Answer 4

tool that monitors traffic going into and out of a computer or network

Question 5

what is the firewall policy?

Answer 5

the decision to allow or block traffic e.g. email transmissions that are not sent from, or to, known and allowed sources are blocked

Question 6

which is more expensive? Hardware based or software based firewalls?

Answer 6

hardware

Question 7

physical security

Answer 7

restricting physical access to important parts of a network e.g. authorised people such as network managers can access servers

Question 8

what is cloud computing?

Answer 8

using servers connected to the internet to run applications or store data

Question 9

name 3 advantages of cloud computing

Answer 9

data can easily be accessed from anywhere with an internet connection

the business running the cloud computing sevice manages backups and security

additional storage can be added easily without having to invest in additional hardware

Question 10

name 3 disadvantages of cloud security

Answer 10

data breaches

easier for hackers to access one system from another

virtualisation needs to be managed