May 2023 Paper revision (Ibrahim)

Question 1

What does SCSI stand for?

Answer 1

Small Computer System Interface

Question 2

What does high latency mean?

Answer 2

The large delay in time it takes for signals to arrive at their destination

Question 3

Name all business software

Answer 3

CAD/CAM
Project management software
Expert Systems
Management Information Systems

Question 4

TCP

Answer 4

TCP is a protocol that allows packets to be sent and received between computer systems.
It breaks the data into packets and resembles them back into the original data at the destination.

Question 5

IP

Answer 5

IP is a protocol that is in charge of routing and addressing data packets. This ensures that data packets are sent across networks to the right destination.
It is also an addressing system - every device on a network is given a unique IP address so data packets can be sent to the correct computer system.

Question 6

UDP

Answer 6

UDP is a faster alternative to TCP it is used where low latency (low lag) is important, such as online gaming and video chat. However UDP does not automatically check for errors so packets are more likely to be lost or received out of order.

Question 7

HTTP

Answer 7

HTTP is a protocol that can be used to transfer web pages over the internet so that users can view them in a web browser.

Question 8

HTTPS

Answer 8

HTTPS is a more secure version of HTTP that works with another protocol called SSL (Secure Sockets Layer) to transfer encrypted data.

Question 9

FTP

Answer 9

FTP is a protocol that can be used to transfer files across a network.

Question 10

ICMP

Answer 10

ICMP (Internet Control Message Protocol) collects network status information (such as router errors) and is used for troubleshooting.

Question 11

SNMP

Answer 11

SNMP (Simple Network Management Protocol) is a protocol that records network statistics, such as router usage.

Question 12

SMTP

Answer 12

SMTP (Simple Mail Transfer Protocol) is a protocol used to send emails to a mail server and between mail servers.

Question 13

POP

Answer 13

POP (Post Office Protocol) is for downloading and storing emails from a mail server

Question 14

File server

Answer 14

A file server centrally stores and manages files so that other systems on the network can access them
The server provides access security, ensuring that only users of the appropriate access level can access files
File servers can be used to automatically back up files, as per the organisations disaster recovery policy
Using a file server frees up physical storage space within a business and can provide printing services too