Application Layer

Question 1

What does the Application Layer do?

Answer 1

It gives applications the ability to interact with the layer below. Data is encoded so that it will be understood by the recipient. An appropriate header is added to indicate the stage in the process achieved.

Question 2

What is FTP?

Answer 2

File transfer Protocol -The transfer of files between a server and a client, determines rules for files being transmitted.

Question 3

What is HTTP?

Answer 3

Hypertext transfer Protocol –The transfer of hypertext over the internet to create hyperlinks to link webpages in the form of HTML files.

Question 4

What is HTTPS?

Answer 4

Hypertext transfer Protocol Secure –Uses the secure socket layer to encrypt the communication protocol and keep information secure.

Question 5

What is SMTP?

Answer 5

Simple Mail Transfer Protocol – Used for Electronic Mail transfer

Question 6

What is POP?

Answer 6

Post Office Protocol – Used by a client to receive emails from a mail server. All emails are downloaded when there is a connection between client and server.

Question 7

What is IMAP?

Answer 7

Internet Message Access Protocol – Similar to POP but messages do not have to be downloaded as they can be read and stored on the server. This is better for users with multiple devices as they can be accessed from all devices.