Application Layer

Question 1

Why is the application layer protocol used?

Answer 1

To allow exchanging data between programs that are running on the destination and source’s hosts

Question 2

How many application-layer protocols are there?

Answer 2

There are many application-layer protocols and there are still some that are being developed.

Question 3

What are the three keywords for the primary functions that the presentation layer provides?

Answer 3

1) Format/present into a compatible form
2) Compress to Decompress
3) Encrypt to Decrypt

Question 4

Name one protocol the application layer uses.

Answer 4

File transfer protocol
IMAP
HTTP (Hypertext transfer protocol)

Question 5

Name one protocol or format tandards for file formats in the presentation layer

Answer 5

• Quick time , MOV
• Portable Network Graphic, PNG
• PDF

Question 6

What is the layer that handles the exchange of information to initiate dialogs, keep them active, and to restart sessions that are disrupted or idle for a long period of time?

Answer 6

Session layer

Question 7

What layer maintains the communication between applications on both source and device hosts?

Answer 7

Session layer

Question 8

What is the main rule to make sure the destination and source to have a successful communication?

Answer 8

Make sure the PROTOCOLS that they are using are compatible.

Question 9

What does application layer protocols actually do?

Answer 9

The protocols basically specify the format and control (the) information that is necessary for internet communication