Networks and Security

Question 1

What is the order of the TCP/IP model?

Answer 1

Application layer, Transport layer, Internet layer/ Network layer, Link layer/Data layer

Question 2

What are the two main types of network topologies?

Answer 2

The star and bus topologies

Question 3

What are some advantages and some disadvantages of the star topology?

Answer 3

Advantages: There are fewer data collisions, fast as data is transferred to the switch, if a device fails the rest of the network is not affected.
Disadvantages: The cost can be expensive, if the switch fails so will the rest of the network

Question 4

What are some advantages and some disadvantages of the bus topology?

Answer 4

Advantages: One device failing does not impact the rest of the network, it does not require a switch.
Disadvantages: Slow speed, if the main cable fails so does the rest of the network, more data collisions

Question 5

What are some advantages of copper cable/ ethernet?

Answer 5

Relatively inexpensive
Reliable
Easy to set up
Less susceptible to interference

Question 6

What are some of the disadvantages of copper cable/ ethernet?

Answer 6

Limited mobility

Slow speed

Question 7

What are some advantages of fibre optic cable?

Answer 7

Reliable
Fast speed
Less susceptible to interference
Need for signal boosters is lessened

Question 8

What are some disadvantages of fibre optic cable?

Answer 8

Limited mobility
Expensive
Difficult to set up

Question 9

What are some advantages of wireless?

Answer 9

Cheap cost
Easy to set up
No limited range

Question 10

What are some disadvantages of wireless?

Answer 10

Not reliable
More susceptible to interference
Less protected

Question 11

What is a LAN?

Answer 11

A network that covers a small geographical profile.

Question 12

What is a WAN?

Answer 12

A network that covers a large geographical area.

Question 13

What is a PAN?

Answer 13

A network that covers a very short area.

Question 14

What is a computer network?

Answer 14

Two or more devices that are connected together for the purpose of communication.

Question 15

What are some of the advantages of a network?

Answer 15

Communication
File sharing
Centralised security
Peripherals can be shared
shared storage
remote monitoring & updates

Question 16

What are some of the disadvantages of a network?

Answer 16

Expensive
Vulnerable to the spread of malware
Management
Security vulnerability

Question 17

What protocols are in the application layer?

Answer 17

HTTP
HTTPS
IMAP
STMP
FTP

Question 18

What protocols are in the transport layer?

Answer 18

UDP

TCP

Question 19

What is the IP responsible for?

Answer 19

Packet switching

Question 20

What are the different types of malware?

Answer 20

Spyware
Worm
Trojan
Virus

Question 21

What is the application layer in the TCP/IP model?

Answer 21

Where the hardware and drivers operate. Passing data over the physical network.

Question 22

What does the transport layer in the TCP/IP layer responsible for?

Answer 22

Setting up the communication between 2 devices. Splitting data into packets and checking packets are correctly sent and delivered.

Question 23

What does the internet layer in the TCP/IP layer do?

Answer 23

Adds IP addresses to data packets and directs them between devices using routers.

Question 24

What is the link layer in the TCP/IP model?

Answer 24

where the software operates.