M.C.A.(Science) (Semester (CGPA) Examination, 2017
PATTERN RECOGNITION MOBILE COMPUTING
Day Date: Thursday, 27-04-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
Instructions: Q.1 and Q.2 are compulsory.
Attempt any 3 questions from Q.NO. 3 to Q. No. 7
Figures to the right indicate full marks.
Q.1 Choose correct alternatives: 10
covers maximum geographical range of all.
Transmission Detection
Interference Handover
In a FHSS time spent on each channel is time.
Dwell Channel Hop Stay in
Dwell time in a GSM handoff depends upon

Propagation
Interference Distance All of above
Wireless LAN has advantages like
Safety and security Restrictions
Quality of Service Flexibility
Which of the following is a permanent IP address that is
assigned to a mobile node?
Foreign Agent Home Agent
Both None of these
The mechanism used in M-TCP is
Splits TCP connection in to two
Splits TCP connections, choke sender
Snoop data
Snoop data and acknowledgement
The approach used to connect setup/ release and data
transmission is
Indirect TCP Transaction TCP
Snooping TCP Mobile TCP
In GSM when transmitted as half rate, user data is mapped at
same slot but in
Duplicate Half Alternate Double
Page 1 of 2
A Bluetooth operates at band.
2.4 GHz 2 GHz 620 MHz 56 MHz
10) Agent discovery solicitation terms are associated with__layer.
Mobile network Mobile IP
Transport All of above
State true/ False: 04
A PHY layer of 802.11 consists of PLCP PMD.
Modulation scheme used in GSM is QPSK.
The main advantage(s) of infra red technology no license.
Low power mode of Bluetooth device is hold mode.
Q.2 Write short notes on the following: 08
Signal Propagation
ii) Concept of handoff
Answer the following: 06
Why cells are hexagonal?
ii) Explain FHSS transmitter receiver.
Q.3 Answer the following: 7+7
Explain hidden exposed terminal effect in wireless network.
Explain different Carrier Sense Multiple Access Wireless MAC.
Q.4 Answer the following: 7+7
Explain the functioning of MTSO and BSC.
Explain sectorization, micro-cell and pico cell concept in GSM.
Q.5 Answer the following: 7+7
What are different management functions supported by MAC.
Describe ad-hoc architecture for WLAN. Explain its advantages
disadvantages with suitable examples.
Q.6 Answer the following: 7+7
With suitable packet format, Explain IP in IP encapsulation.
What is DHCP? With suitable diagram explain basic DHCP
configuration.
Q.7 Answer the following: 7+7
Explain Mobile TCP and Snooping TCP with advantages and
Disadvantages.
Explain congestion control and slow start concept related to
Traditional TCP.