Week 2 tutorial

Question 1

What is a protocol?

Answer 1

A set of rules or procedures for transmitting data between electronic devices

Question 2

Give some common internet protocols

Answer 2

tcp
udp
dhcp
dns
http
https

Question 3

what is a message

Answer 3

bit of data sent by sender to recipient

Question 4

what is the layered model, and what does it consist of

Answer 4

protocol layered model for sending data across a network. It consists of the

• application
• transport
• network
• link
• physical

Question 5

what is encapsulation within the layered model?

Answer 5

process of taking dat from one protocol and translating it into another protocol, so data can continue across a network

Question 6

differences between a socket opened by a client and one opened by a server?

Answer 6

• client needs address and port
• server only needs port
• server waits for requests
• client connects
• client used for simple tasks
• server used for huge tasks