Visvesvaraya Technological University (VTU) 2007 B.E Computer Science on mobile communications - Question Paper

communications.
8.2 What could be quick ‘solutions’ and why do they not work?
8.3 Name the requirements for a mobile IP and justify them. Does mobile IP fulfil them
all?
8.4 List the entities of mobile IP and define data transfer from a mobile node to a fixed
node and vice versa. Why and where is encapsulation needed?
8.5 How does registration on layer three of a mobile node work?
8.6 Show the steps needed for a handover from 1 foreign agent to a different foreign
agent including layer two and layer 3.
8.7 discuss packet flow if 2 mobile nodes communicate and both are in foreign
networks. What additional routes do packets take if reverse tunnelling is required?
8.8 discuss how tunnelling works in general and especially for mobile IP using IP-in-IP,
minimal, and generic routing encapsulation, respectively. explain the advantages
and disadvantages of these 3 methods.
8.9 Name the inefficiencies of mobile IP regarding data forwarding from a correspondent
node to a mobile node. elaborate optimizations and what additional issues do they
cause?
8.10 What advantages does the use of IPv6 offer for mobility? Where are the entities of
mobile IP now?
8.11 elaborate general issues of mobile IP regarding security and support of quality of
service?
8.12 What is the basic purpose of DHCP? Name the entities of DHCP.
8.13 How can DHCP be used for mobility and support of mobile IP?
8.14 Name the main differences ranging from multi-hop ad hoc networks and other networks.
What advantages do these ad hoc networks offer?
8.15 Why is routing in multi-hop ad hoc networks complicated, elaborate the special
challenges?
8.16 Recall the distance vector and link state routing algorithms for fixed networks. Why
are both difficult to use in multi-hop ad hoc networks?
8.17 elaborate the differences ranging from AODV and the standard distance vector algorithm?
Why are extensions needed?
8.18 How does dynamic source routing handle routing? What is the motivation behind
dynamic source routing compared to other routing algorithms from fixed networks?
8.19 How does the symmetry of wireless links influence the routing algorithms proposed?
8.20 Why are special protocols for the support of micro mobility on the network layer
needed?
8.21 elaborate the benefits of location info for routing in ad hoc networks, which
issues do arise?
8.22 Think of ad hoc networks with fast moving nodes, e.g., cars in a city. What issues
arise even for the routing algorithms adapted to ad hoc networks? What is the

Earning:   Approval pending.