IT2402 Mobile Communication B.E Question Bank : dmice.ac.in

Name of the College : DMI College OF Engineering
Department : INFORMATION TECHNOLOGY
Subject Name : IT2402 Mobile Communication
Degree : B.E
Sem : IV
Website : dmice.ac.in
Document Type : Question Bank

Mobile Communication : https://www.pdfquestion.in/uploads/dmice.ac.in/2784-IT2402.doc

DMI Mobile Communication Question Bank

UNIT – I

Wireless Communication :
2 Marks:
1. What are the disadvantages of analog modulation? (A/M 2010)
2. What is meant by frequency reuse? (N/D 2011)

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3. Differentiate between soft and hard handoff. (N/D 2011)
4. What is the motivation for specialized MAC? (M/J 2012)
5. Draw model to illustrate the effort of handoff. (M/J 2012)
6. Draw the frequency assignment for radio transmission. (M/J 2013)
7. What is handoff? List out its characteristics. (M/J 2013)
8. What is borrowing channel allocation? (M/J 2013)
9. Prove that Barker code has good auto correlation. (N/D 2012)
10. Which TDMA scheme is suitable for satellite system? (M/J 2014)
11. Define CDMA.
12. What are the types of handover?
13. What is meant by non-persistent CSMA?
14. What are the advantages of cellur system?
15. Define mobility.
16. What is fading?
17. What is CSMA/CA?
18. What is EY-NMPA?
19. What do you mean by polling?
20. Define dropped cell rate.

16 Marks:
1. Explain the methods of TDMA. (16 mark) (A/M 2010) (N/D 2012).
2. What is CDMA? Explain FDMA, TDMA, SDMA and CDMA. (16 mark) (N/D2011).
3. Write note on cellular wireless network. (16 mark) (N/D 2011) (10 mark) (M/J 2012) (8 mark)(M/J2013) (6 mark)(N/D 2012)
4. Compare the characteristic features of FDMA, TDMA & CDMA mechanism. (16 mark)(N/D 2012)(8 mark)(M/J 2013)(6 mark)(M/J 2012)
5. Explain in detail about motivation of specialized MAC. (10 mark) (M/J 2012) (M/J 2013)
6. List the various performance metrics used to move the decisition with reference to handoff. (4 mark) (M/J 2012).
7. What is cellular system? Give the advantages and disadvantages. (6 mark) (M/J 2013)
8. Explain the following MAC protocol: DAMA, PRMA, and MACA (8)
9. What is polling ?Write short notes on TDMA(8)
10. Why do MAC scheme in wired network fail in wireless networks and how does the multiple access with collision avoidance (MACA) scheme work.

UNIT – II

Wireless Networks :
2 Marks:
1. Give examples for mobile adhoc networks. (M/J 2013)
2. Define Ad hoc wireless network with example. (M/J 2013)
3. Why cannot wireless LANs implement CSMA/CD? (M/J 2012)
4. Why is WiMAX forum formed? (M/J 2012)
5. Differentiate between Wi-Fi and WiMAX. (N/D 2011)
6. What is Wireless Local Loop (WLL)? (N/D 2012) (N/D 2011)
7. What are the advantages of Infrared Technology? (N/D 2013)
8. Differentiate wired network and adhoc network based on routing? (N/D 2013)
9. What are the three low power states of a Bluetooth state? (AU Nov 2012)
10. What is the primary goal of IEEE 802.11?
11. What are the Advantages of wireless LAN?
12. What is PLCP?
13. What is PMD?
14. List the three basis mechanisms of IEEE 802.11?
15. What is piconet?
16. What is Logical Link Control?
17. What is Bluetooth?
18. What is Frequency Hopping Spread Spectrum?
19. List the functions of Convergence Layer?
20. Define MANET.

16 Marks:-
1. Discuss the advantages and disadvantages of WLAN.(4) (AU May 2013)
2. Describe the functions of MAC & Physical layer IEEE 802.16 in detail.(10) (AU May 2013)
3. Write short notes on wireless local loop.(6) (AU May 2013)
4. Briefly explain about the system and protocol architecture of 802.11 standard with MAC layer and its management.(16)( AU Nov 2012) (12) (AU May 2013) (AU Nov 2011)
5. Briefly discuss about systems and protocol structure of 802.16 standard.(16) (AU Nov 2012)
6. Write a note on mobile adhoc networks.(16)(Nov 2011)
7. With the suitable diagram explain the extended service set. (8) (AU May 2012)
8. Draw the schematic for physical layer of IEEE 802.11 infrared and explain.(8) (AU May 2012)
9. Briefly discuss about systems and protocol structure of 802.15 standard.(16)
10. List the two MAC Sub layers defined by IEEE 802.11 standard and explain.(16) (AU May 2012)

11. Explain Wi-FI and Wimax.(8)
12. Explain WLL(8)