Application Layer Protocols

Question 1

What does SSH stand for?

Answer 1

Secure Shell

SSH allows secure remote login and encrypted data transmission.

Question 2

What is the purpose of SSH?

Answer 2

Allows remote login access to servers and secure data transmission

SSH is useful for network administrators accessing servers without direct terminals.

Question 3

What does the command ‘pwd’ do?

Answer 3

States current directory

‘pwd’ stands for ‘print working directory’.

Question 4

What does the command ‘mkdir’ do?

Answer 4

Creates a folder

‘mkdir’ stands for ‘make directory’.

Question 5

What is a web server?

Answer 5

A computer that stores website elements and responds to HTTP requests

It includes text, images, HTML, and CSS files.

Question 6

What does HTTP stand for?

Answer 6

Hypertext Transfer Protocol

HTTP is used for transferring web pages over the internet.

Question 7

What is the function of a GET request in HTTP?

Answer 7

Requests a resource from a server

Example: GET /Index.html HTTP/1.1.

Question 8

What does a 200 OK status code indicate?

Answer 8

Success

It means the request was successfully processed by the server.

Question 9

What is the range of HTTP response status codes for client errors?

Answer 9

4xx

These codes indicate issues with the client’s request.

Question 10

What is HTTPS?

Answer 10

Secure Hypertext Transfer Protocol

It encrypts data transferred between a web browser and server.

Question 11

What is the purpose of FTP?

Answer 11

Transfers files between two computers

It is commonly used for downloading or uploading large files.

Question 12

What does the command ‘get’ do in FTP?

Answer 12

Downloads a file

It retrieves specified files from the server.

Question 13

What does SMTP stand for?

Answer 13

Simple Mail Transfer Protocol

It is used for sending emails from client to mail server.

Question 14

What is POP3?

Answer 14

Post Office Protocol

It retrieves emails from the mail server to the client.

Question 15

Fill in the blank: The command ‘cd’ is used to ______.

Answer 15

change directory

‘cd’ allows navigation between folders.

Question 16

True or False: HTTPS is commonly used for online banking.

Answer 16

True

HTTPS encrypts sensitive data such as credit card numbers.

Question 17

What is the role of an email server?

Answer 17

Distributes incoming email messages and sends outgoing messages

It acts as a storage and forwarding system for emails.