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MOBILE COMPUTING IMPORTANT QUESTIONS
UNIT-1
16MARKS:
- Data dissemination and Mobile Computing architecture.
- GSM architecture.
- GPRS architecture.
2MARKS:
- Frequencies and their ranges.
- Very Low Frequency-30KHz to 1MHz.
- Medium Frequency-0.5 to 2MHz.
- High Frequency-6 to 30MHz.
- FM- 87.5 to 108MHz.
- VHF- 50 to 250MHz.
- UHF-200 to 2000MHz.
- SHF- 2 to 40GHz.
- EHF- above 40GHZ.
- Far IR-0.3THz.
- IR-350THz.
- Visible light-750THz.
- UV- above 750THz.
- What is Antennae?
- What are the modulation types (AM, FM, etc.,) and definition of each?
- What are the multiplexing techniques (Space, Time, Frequency, Code division) and definition of each?
- Difference between Circuit Switching and Packet Switching.
- Name any 3 protocols used in Wireless communication?
- What is Mobile Computing and the applications?
- Limitations of Mobile Computing.
- What are AdHoc networks?
- What do you mean by Digital Signature?
- Define GSM.
- Define GPRS.
- What are SIM, IMEI, and IMSI?
UNIT-2
16MARKS:
- Frequency Management and Channel Assignment.
- Location Management.
- Spread Spectrum.
2MARKS:
- Difference between Paging and Location update.
- Difference between Soft Handoff and Hard Handoff.
- Schemes of location management.
- What is MAC?
- Difference between Hidden and Exposed Terminal, Near and Far Terminals.
- What is ALOHA?
- Features of CDMA system?
- Difference between DSSS and FHSS.
- What is Barker code, gold codes, Walsh code, Scrambling code, orthogonal code, best code?
- Difference between Co-channel and Co-site interference.
UNIT-3:
16MARKS:
- Route Optimisation.
- Packet delivery and Handover management.
- Tunnelling and Encapsulation.
2MARKS:
- What is agent discovery?
- What is agent advertisement?
- What is agent solicitation?
- What is tunnelling and encapsulation?
- What is COA?
- What is GRE?
- What do you mean by reverse tunnelling?
- Time-to-live?
- Define DHCP.
- Difference between Home Agent and Mobile Agent.
UNIT-4:
16MARKS:
- Indirect TCP and Snooping TCP.
- Windows CE and Symbion OS.
- Congestion Control Techniques.
2MARKS:
- Difference between TCP and UDP.
- Features of TCP.
- TCP header.
- What do you mean by sliding window?
- Methods of Congestion Control.
- What is selective retransmission?
- What is explicit notification?
- Features of Palm OS.
- Features of Linux OS.
UNIT-5:
16MARKS:
- Middleware for Application development.
- Garbage collection.
- Applications of ADHOC.
- Energy Efficient Communications.
2MARKS:
- What is middleware?
- What is Service discovery?
- What is the role of gents?
- What are jini and ninja?
- Define ADHOC networks.
- What are the elements of sensor networks?
- Properties of ADHOC networks.
- Applications of ADHOC networks.
- Challenges in ADHOC networks.
- What do you mean by neighbourhood discovery.
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