You would use a Mobile IP solution, rather than DHCP or a simple WLAN, when you are interested in which of the following?
Nomadic mobility
Intrasubnet mobility
Always-on IP mobility
Stationary IP communication
Link-layer mobility
A1:
Answer: c. Mobile IP allows the user to remain in active communication as the user moves. Thus, the user can maintain TCP/UDP connections while moving, because the home IP address of the Mobile Node does not change. DHCP, on the other hand, is a nomadic solution. The user obtains a new address in the foreign/new network and must close all communication before moving again. WLAN provides mobility within one IP subnet.
2:
What is the difference between nomadicity and mobility in the context of Mobile IP?
A2:
Answer:Nomadicity refers to the ability to move from one location to another and start communications. The user must terminate and restart sessions and applications as a result of the move. By contrast, mobility refers to the ability to move and maintain communication in the process.
3:
What are the four requirements that a mobility solution must address?
A3:
Answer: A mobility solution must address four requirements: location discovery, move detection, update signaling, and path (re)establishment.
4:
Link-layer mobility protocols by themselves are capable of handling interaccess technology handovers.
True
False
A4:
Answer: False. By definition, link-layer mobility is associated only with a specific access link technology.
5:
IP layer mobility allows all IP-enabled applications, whether they use TCP, UDP, or another transport protocol, to seamlessly inherit full mobility across a diverse range of access link types.