ACN MODULE 1 (1)

What is the highest layer in the protocol suite?

It provides services directly to the user.

How do application layer protocols interact with the transport layer?

They receive services from the transport layer only.

What happens if a new application protocol is needed?

The application layer allows for easy addition of new protocols.

What defines the relationship between a device and a physical medium?

The Physical Layer specifies electrical and physical characteristics.

What is the function of the Data Link Layer?

It transfers data and detects/corrects errors from the Physical Layer.

What are the two sub-layers of the Data Link Layer?

Media Access Control (MAC) and Logical Link Control (LLC).

What does the Network Layer provide?

It transfers data sequences while maintaining quality of service.

What role do routers play in the Network Layer?

They send data throughout the network and handle routing.

What is the main function of the Physical Layer?

It establishes and terminates connections to communication media.

How does the Data Link Layer differ from the Physical Layer?

It focuses on data transfer and error detection, not physical transmission.

What is the highest layer in the protocol suite?

It provides services directly to the user.

How do application layer protocols interact with the transport layer?

They receive services from the transport layer only.

What happens if a new application protocol is needed?

The application layer allows for easy addition of new protocols.

What defines the relationship between a device and a physical medium?

The Physical Layer specifies electrical and physical characteristics.

What is the function of the Data Link Layer?

It transfers data and detects/corrects errors from the Physical Layer.

What are the two sub-layers of the Data Link Layer?

Media Access Control (MAC) and Logical Link Control (LLC).

What does the Network Layer provide?

It transfers data sequences while maintaining quality of service.

What role do routers play in the Network Layer?

They send data throughout the network and enable Internet functionality.

What is the main function of the Physical Layer?

It establishes and terminates connections to communication media.

How does the Data Link Layer differ from the Physical Layer?

It focuses on data transfer and error detection, not physical transmission.

What is the highest layer in the protocol suite?

It provides services directly to the user.

How do application layer protocols interact with the transport layer?

They receive services from the transport layer only.

What happens if a new application protocol is needed?

The application layer's flexibility allows easy addition.

What defines the relationship between a device and a physical medium?

The Physical Layer specifies electrical and physical characteristics.

What is the main function of the Data Link Layer?

It transfers data and detects/corrects errors from the Physical Layer.

What are the two sub-layers of the Data Link Layer?

Media Access Control (MAC) and Logical Link Control (LLC).

What does the Network Layer maintain while transferring data?

The quality of service requested by the Transport Layer.

What role do routers play in the Network Layer?

They send data throughout the network and enable Internet connectivity.

What is the function of the Physical Layer in communication?

It establishes and terminates connections to communication media.

How does the Data Link Layer handle media access?

It defines methods like CSMA/CD/CA for media access transfer.