Department of COMPUTER SCIENCE & ENGINEERING

wirelessguideMobile - Wireless

Nov 24, 2013 (4 years and 1 month ago)

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ST. ANN’S COLLEGE OF ENGINEERING & TECHNOLOGY

Department of
COMPUTER SCIENCE
&
ENGINEERING


Subject:
Mobile Computing

Academic Year: 2012
-
2013


Faculty: Dr. P.Harini

Cl
ass: IV
-
CSE
-
A

& B

ASSIGNMENT
-
1

1.

a)
With the help of a neat diagram, explain the
Architectural
reference model of wireless
and mobile network
?

b)
What is electromagnetic spectrum? Which part of the spectrum is used for wireless and
mobile communications? Con
sider all possibilities like building a network, cellular
communications, and satellite networks etc

2.

a)

Explain the
applications of Mobile Computing?

b)

Explain in detail about GSM

Architecture
?

3.

a)

Explain

the different generations of mobile telecommunicati
ons systems
?

b) Explain the Services Provided by GSM System?

4.

a)
What is handover? Why it is required? What are the handover scenarios in GSM? How
the handover
decision takes

place depending on receiver signal strength?



b) Explain high speed cir
cuit switched data transmission approach




5.

a
) Explain

the Authentication & Data Encryption Process in GSM?




b) Explain the following Data Services provided by GSM?




i) HSCSD ii) GPRS

ASSIGNMENT
-
2

1.

Suggest a multiple access scheme

which
gives

good performance in all situations.

2.

How starvation can be avoided in all multiple access schemes which you have studied.
Explain in detail.

3.

a)
Explain how priority based multiple access schemes can be implemented.

b)

What is multiplexing? Why
it is needed? What are the different kinds of

Multi
-
plexing techniques? Explain them



4.

Assume that there are N stations. Stations transmit without sensing the channel.


Under what conditions the performance f this scheme is good. When the perfo
r
-


mance is poor. How carrier sensing helps to improve the situation. When carried


sensing helps little. What is the suggested solution then?


5
.

(a) How the reservations improve performance of time based multiple access scheme
s?


(b) What are the different reservation based multiple access schemes?


ASSIGNMENT
-
3


1.


(a) What are the entities that are part of mobile IP? Explain them with an



Ex
ample network?


(b) What is tunneling in mobile IP?


2
.

(a) What is the role of Home agent and
foreign

agent in mobile IP?




(b) What are the two possibilities for location of COA?


3
.

(a) What is the use of binding cache in mobile IP?




(b) What are the limitations of minimal
-
encapsul
ation in mobile IP?



4
. a) Explain the registration of a mobile node via the foreign and direct registration


with the home agent.



b) What is the purpose of DHCP? Explain client initialization via DHCP.



5
. a) Write detailed notes
on IP encapsulation mechanisms.




b) What is reverse tunneling? What additional routes do packets take if


reverse tunneling is required?


6
. a) Describe data transfer from a mobile node to fixed node and vice
-
versa.


b) Write short n
otes on IPv6.


ASSIGNMENT
-
4


1.

Compare the classical approaches to make the TCP suitable for mobile

environment. Give their relative advantages and disadvantages.

2.

Explain in detail Indirect TCP

and Snooping

TCP.



3

a) Explain the concept of Fast retran
smit / Fast recovery in traditional TCP.



b) Explain Transmission/Time
-
out freezing approach.


4.

a) Write a brief notes on congestion control in traditional TCP.



b) Explain Indirect TCP. What are its advantages and
disadvantages?



5.
a) Write the differences between TCP and UDP.


b) Compare several enhancements to TCP for mobility
.


ASSIGNMENT
-
5

1.

a)
Explain in detail the transactional model of database
?

b) Explain the Query processing of database?

2.

a) Discuss the necessity
of cache and briefly discuss about caching invalidation


mechanism.


b) Explain

the issues ensuring of QOS in mobile environment


3
.

a)

What are the hoarding techniques? Explain in detail.



b)
What is context aware?
Explain in detail about context aware computing.


4.
a) Explain data cache maintenance in mobile environment.



b) Explain Power


aware computing.


5.

a) List and explain the context types in context aware computing.


b) Write about the c
lient server computing with adaptation.



ASSIGNMENT
-
6


1.
a) The push based broad cast are not suitable for large data size, justify.


(b) Explain about on demand data scheduling.

2
.
a) What

is indexing? Discuss the various types of indexing techni
ques in detail


b) What

is balanced push
-
pull mechanism? In detail explain about IPP
.

3
.

a) Explain Pull based data delivery mechanisms in detail.


b) Explain index and distributed index based selective tuning techniques

4

a) Write brief notes on
communication asymmetry with the help of diagrams.


b) Explain interleaved Push


Pull based data delivery mechanism
.

ASSIGNMENT
-
7

1.

(a) What is MANET? How is it different from cellular system?


(b)
What are the advantages & disadvantages of MANET
S?


(c) What are the applications of MANET?

2
. a)
Explain in detail AODV routing algorithm for MANETS.



b) Explain Dynamic source routing in MANETs.

3. a
) Describe security problems in MANETs


b) Explain Destination sequence distance vector routi
ng algorithm in MANETs


ASSIGNMENT
-
8


1.

a)
Write notes on the following: (
i
) WDP (
ii
) WTLS
.


b)

What is WAE? Discuss about its logical model
.

2.

(a) With a neat diagram explain the WAP architecture.


(b) Discuss briefly the user scenarios of Bl
uetooth.

3. a)

Discuss about the wireless transport layer security of security layer.


b)

Discuss the configuration and profile of J2ME in detail.

4. a)

Explain wireless datagram protocol and Transaction protocol


b) Explain the wireless session

protocol of the session layer.

5

a) Define WAP and briefly explain about the features and characteristics of WAP.


b) Discuss about the wireless transaction protocol of the transaction layer.