31. Which OSI layers are the network support layers?
- Physical
- Data link
- Network layers.
32. Which OSI layers are the user support layers?
- Session
- Presentation
- Application.
33. What are the responsibilities of physical layer, data link layer, network layer, transport layer, session layer, presentation layer, application layer.
a. Physical layer – Responsible for transmitting individual bits from one node to the next.
b. Data link layer – Responsible for transmitting frames from one node to the next.
c. Network layer – Responsible for the delivery of packets from the original source to the final destination.
d. Transport layer – Responsible for delivery of a message from one process to another.
e. Session layer – To establish, manage and terminate sessions.
f. Presentation layer – Responsible to translate, encrypt and compress data.
g. Application layer – Responsible for providing services to the user. To allow access to network resources.
34. What is the purpose of dialog controller?
The session layer is the network dialog controller. It establishes, maintains and synchronizes the interaction between communicating systems.
35. Name some services provided by the application layer.
Specific services provided by the application layer include the following.
- Network virtual terminal.
- File transfer, access and management (FTAM).
- Mail services.
- Directory services.
- Physical
- Data link
- Network layers.
32. Which OSI layers are the user support layers?
- Session
- Presentation
- Application.
33. What are the responsibilities of physical layer, data link layer, network layer, transport layer, session layer, presentation layer, application layer.
a. Physical layer – Responsible for transmitting individual bits from one node to the next.
b. Data link layer – Responsible for transmitting frames from one node to the next.
c. Network layer – Responsible for the delivery of packets from the original source to the final destination.
d. Transport layer – Responsible for delivery of a message from one process to another.
e. Session layer – To establish, manage and terminate sessions.
f. Presentation layer – Responsible to translate, encrypt and compress data.
g. Application layer – Responsible for providing services to the user. To allow access to network resources.
34. What is the purpose of dialog controller?
The session layer is the network dialog controller. It establishes, maintains and synchronizes the interaction between communicating systems.
35. Name some services provided by the application layer.
Specific services provided by the application layer include the following.
- Network virtual terminal.
- File transfer, access and management (FTAM).
- Mail services.
- Directory services.
