WMC Important question for GTU


  1. Explain the Benefits of Wireless communication /Advantages of Wireless communication.
  2. Explain the Security threats of wireless communication and safeguard measures that can be taken to minimize them. 
  3. List all the disadvantages of the Wireless Networking / Concerns of wireless networks/ issues of wireless networking.
  4. Explain physical components used to form Wireless network.
  5. Explain logical Architecture of the wireless network.
  6. Explain the Different Types of infrared light LAN.
  7. Short note: Interference / types of interference/ Inward & Outward interferences.
  8. Explain advantages and disadvantages of Radio based wireless LAN.
  9. Types of Antenna.
  10. Components of WIN.
  11. Differentiate between Spread Spectrum and Direct Spread Spectrum Modulation.
  12. Compare Narrow band Modulation and Spread Spectrum Modulation.
  13. Explain Following Terms:
Types of Antenna, Mobile ware – is software that enables u to communicate over cellular or regular wire line phones.
  1. Explain Multiple Cell Wireless LANS. Compare it with Single-Cell Wireless LANS.
  2. Different types of wireless LAN.
  3. How does Roaming works? Explain all the attributes that affect it.
  4. Differentiate between FHSS & DSSS working.
  5. What is spread spectrum modulation?
  6. Explain Radio based wireless LAN configurations in detail.
  7. Explain CDPD Standard in detail / Explain Goals & Objectives of CDPD network & its Architecture.
  8. Differentiate between local and remote bridges in wireless communication network.
  9. Different modes of wireless LAN.
  10. Explain Packet Radio WAN Architecture & its components / Explain Packet. Radio WAN Architecture & Packet Radio Operations.
  11. What are the services provided by ‘ARDIS’-A Packet Radio Service Provider.
25.  Explain SkyTel’s Two way paging Network.
26.  802.11 frame format.
27.  Types of Wireless LANs.
28.  Compare: Wireless LAN and Wireless WAN.
  1. Explain Two-Way-Pager Networks with its pros and cons.
30.  Explain LEO & GEO satellites.
31.  MAC protocols for satellite links.
32.  Explain: Hybrid networks.
  1. Analog Cellular Technology.
  2. Discuss the components of any satellite system/ List all main components of satellite system & their importance in system.
  3. Explain GSM Network Architecture and show call path routing in GSM.
  4. Explain: GSM interfaces.
  5. Explain different call flaw sequences in GSM.
  6. Short note: GPS.
  7. Explain the automatic vehicle locating GPS System – ‘Mobile Trak’
  8. How GPRS functionality does get activated over GSM networks?             
  9. Explain GPRS network Architecture.                                                                       
  10. Data routing in GPRS.
  11. Features of GPRS.
  12. Limitations of GPRS network.
  13. Explain: GPRS interfaces.                                        
  14. Explain WAP Architecture in detail / WAP Components.
  15. Short note : WAE
  16. Explain the ways to handle the database consistency issue when the database is accessed through WAP Architecture.
  17. Explain WTP classes of WAP Architecture in brief.
  18. Short note: “WAP Programming Model”.
  19. Explain WAP Protocol Stack in detail.
  20. Explain the usage of following WML tags along with the parameters.
<a> <anchor> <card> <do> <go> <fieldset> <img> <input> <setvar> <Template> <Postfiled> <Meta> <smail> <br> <anchor> <table> <timer> <spawn>
  1. Write WML Script that will ask username and password. Display appropriate message depending on the input mode by the user / Write a program in WML to check inputted username and password and display appropriate message. Take hardcode password and username. Give proper validation checks.
  2. Write a WML Script to perform all major functions of a standard calculator.
  3. Write WML Script for a Shopping Complex, where use will select items to be brought and specify its quantity. From the already existing database, it should read the amount of all the items and generate bill.
  4. Explain: Lang Library.
  5. Explain the following WMLS library functions:
Ceil, abort, seed, squeeze.
  1. Write a program to store the marks of all the students of the class for all semesters in the database. Display them rank wise. Also provide the searching facility on the name of student.

  1. Define following Terms
Agent Discovery, Registration, Tunneling, Home Agent, Case-of Address Collocated address, foreign agent, Deregistration, WAE, Agent Solicitation, Mobile Security Association, Rollover handling, ICMP, Handover, Home Agent Discovery, Localization.
  1. Explain Mobile IP registration procedure.
  2. Explain different message format for the registration process of mobile IP. / Explain Registration Reply packet format in detail / Explain Registration Request Packet format in detail.
  3. Explain two level addressing schemes in terms of IP addressing.
  4. What do you understand by tunneling? Why tunneling is required for mobile communication systems? / Short note: Tunneling.
  5. Differentiate between solicitation and advertisement techniques of mobile computing.
  6. Explain sequence number and roll over handling methods in terms of agent advertisement.
  7. Explain two tables maintained by the foreign agent during registration.
  8. List the reasons to get registration denial from foreign agent.
  9. How and when Mobile node discovers an agent?
  10. Explain Agent Discovery & its various extensions.
  11. Short note: Deregistration /Explain Deregistration by mobile nodes along with message format.
  12. Explain Abstract Mobility Management Model. Also list the functions required to support mobility / Explain IETF Mobile IP Abstract Model in detail.
  13. What is validity check? Explain various validity checks with registration replies.
  14. Discuss source routing? Compare it with Tunneling.
  15. Explain Registration with a collocated care-of address using appropriate Example.
  16. Explain when following codes will be used for denied by foreign agent/home agent: 69, 73, and 88,131,136.
  17. Discuss how mobile node determines that it had moved in detail.
  18. Explain how a mobile node can learn the address of a home agent in detail.
  19. What Protocols are used in tunneling?
  20. Middleware.
  21. Explain TCP timers in Mobile Network.
  22. Explain TLV format in detail.          
  23. Explain Router Discovery Protocols.
  24. Explain how Van Jacobson Compression works in detail.
  25. Describe the processing done by home agent for registration of mobile node.
  26. Discuss message format for the router advertisement messages.
  27. Explain ICMP message for router discovers.
  28. Explain Columbia mobile IP abstract model / explain the architecture of Columbia Mobile IP in detail.
  29. Explain the basic working of Mobile IP. How does it take care of mobility of user? Explain operation of Mobile IP protocol.
  30. Differentiate: Mobile IP and CDPD.
  31. Enlist the products/items that can provide mobility. If mobile IP is not existent.
  32. Explain Dynamic Source routing in Ad-hoc Networks.
  33. Why Ad-hoc network has been the special treatment as in compared to any other wireless network?
  34. IEEE 802.11 standard.
  35. Describe steps of mobile communication.
  36. Explain Following Terms:
Paging, Constellation, Frequency Reuse, routing, Handover, Cell, ICMP, Collocated care-of address

  1. State whether true or false:
    1. WML is not a case-sensitive language.
    2. MAX_SOLICITATION tells about the speed of the router, with which it can send advertisements.
    3. F and H bits of Agent Advertisement can’t be simultaneously.
    4. Identification number is used to identify proper mobile node for which this request.
    5. A mobile node can only be registered to a single agent as foreign node at any moment if time.
    6. Relay node routing table in Packet radio contains an entry for each possible destination nodes in that WAN.
    7. CDPD provides half-duplex communication.
  2. What are different types of cells and why are they required?
  3. Limitations of 2G Mobile Devices.
  4. Explain various wireless multiple access methods / multiple access technology.
  5. Discuss various cell splitting technologies. Why at all cell splitting is done?
  6. Explain passive reception of wireless network data in detail.
  7. Explain the evolution of 3G technologies as compared to that of previous generations.
  8. How mobility is managed in Cellular technology?
  9. Discuss some basic components required in any basic cellular architecture with their functionalities viz. HLR, etc.