Networking

Question 1

Describe the nibble address range for each IP class, from A to E.

Answer 1

A: 1-126 
B: 128-191
C: 192-223
D: 224-239
E: 240-254

Question 2

Briefly describe the OSI model layers from layer 7 to 1.

Answer 2

7- Application: Provides network services to applications.

6- Presentation: This layer converts/translates between data formats.

5- Session: Imposes order on the communication between devices.

4- Transport: Deals with communications of data between layers.

3- Network: Deals with packets, connectivity and path selection.

2- Data Link: Responsible for creating, transmitting, and receiving data frames.

1- Physical: Moves bits between physically connected systems.