Networks

Question 1

TCP/IP Model

Answer 1

Layer 4 - Application Layer
Layer 3 - Transport Layer
Layer 2 - Internet Layer
Layer 1 - Link Layer

Question 2

Application Layer

Answer 2

Providing networking services to applications
HTTP, HTTPS, FTP, SMTP, IMAP

Question 3

Transport Layer

Answer 3

Setting up communications between two devices, splitting data into packets and checking packets are correctly sent and delivered
TCP, UDP

Question 4

Internet Layer

Answer 4

Adding IP Addresses to data packets, directing them between devices and handling traffic. Used by routers
IP

Question 5

Link Layer

Answer 5

Passing data over the physical network. Responsible for how data is sent as electrical signals

Question 6

White Box Penetration Testing

Answer 6

Simulates a malicious insider who has knowledge of the current system. The person carrying out the test will be given user credentials to see what they can do with them

Question 7

Black Box Penetration Testing

Answer 7

Simulates an external cyber attack. The person carrying out the test will not be given any credentials, but will try to hack the organisation in any way they can

Question 8

Types of Network Protection

Answer 8

Encryption
Anti-malware software
Firewalls
Automatic Software Updates
User Access Levels
MAC Address Filtering