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Wireless Network Medium Access Control (MAC) Protocol

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Questions and Answers

What is the responsibility of the medium access control (MAC) protocol in a wireless network?

Enforce discipline in access of a shared channel
Support several types of traffic
Perform arbitration to prevent garbled data transmission (correct)
Maximize the utilization of the channel

Which property is required of MAC protocols in a wireless network?

Maximize the utilization of the channel
Minimize average latency of transmission (correct)
Enforce discipline in access of a shared channel
Be robust in the face of equipment failures

Why is collision detection scheme difficult to implement in a wireless environment?

Transmission ranges of wireless stations (correct)
No suitable arbitration scheme
Radio range limitations
Hidden and exposed terminals problems

What problem arises when nodes are not in the radio range of each other in a wireless environment?

Hidden Terminal Problem (D) Signup and view all the answers

What does the MAC protocol sublayer enforce in a wireless network?

Discipline in access of a shared channel (B) Signup and view all the answers

What is the primary problem Mobile IP was created to solve?

Maintaining the same IP address while traveling to a different network (A) Signup and view all the answers

What is the role of the Mobile Node (MN) in Mobile IP?

It is a device that enables network roaming capabilities (D) Signup and view all the answers

What happens when a device roams away from its home network in terms of IP routing?

The device is no longer reachable using normal IP routing (A) Signup and view all the answers

What is the purpose of the Correspondent Node (CN) in Mobile IP?

To act as the end host to which the Mobile Node is corresponding (A) Signup and view all the answers

What is the main function of Mobile IP in an IP network?

To retain the same IP address and maintain existing communications while traveling from one link to another (A) Signup and view all the answers

In the context of Mobile IP, what is the responsibility of a Home Agent?

Maintaining an association between the home IP address of the Mobile Node and its care-of address (A) Signup and view all the answers

What feature of Mobile IP ensures that a mobile end-system should continue to keep its IP address and there should not be any disruption of communication after any movement?

Transparency (C) Signup and view all the answers

During the Agent Discovery phase, what does an agent advertisement message contain?

Lists one or more available care-of addresses (B) Signup and view all the answers

What is the purpose of Agent Solicitation in the context of Mobile IP?

To allow a Mobile Node to discover a Foreign or Home Agent (A) Signup and view all the answers

What does the Care-of Address represent in Mobile IP?

The current location of the Mobile Node on the foreign or visited network (B) Signup and view all the answers

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