MOBILE COMPUTING IMPORTANT QUESTIONS

UNIT-1
16MARKS:

1. Data dissemination and Mobile Computing architecture.
2. GSM architecture.
3. GPRS architecture.

2MARKS:

1. What is Antennae?
2. What are the modulation types (AM, FM, etc.,) and definition of each?
3. What are the multiplexing techniques (Space, Time, Frequency, Code division) and definition of each?
4. Difference between Circuit Switching and Packet Switching.
5. Name any 3 protocols used in Wireless communication?
6. What is Mobile Computing and the applications?
7. Limitations of Mobile Computing.
8. What are AdHoc networks?
9. What do you mean by Digital Signature?
10. Define GSM.
11. Define GPRS.
12. What are SIM, IMEI, and IMSI?

UNIT-2
16MARKS:

1. Frequency Management and Channel Assignment.
2. Location Management.
3. Spread Spectrum.

2MARKS:

1. Difference between Paging and Location update.
2. Difference between Soft Handoff and Hard Handoff.
3. Schemes of location management.
4. What is MAC?
5. Difference between Hidden and Exposed Terminal, Near and Far Terminals.
6. What is ALOHA?
7. Features of CDMA system?
8.  Difference between DSSS and FHSS.
9. What is Barker code, gold codes, Walsh code, Scrambling code, orthogonal code, best code?
10. Difference between Co-channel and Co-site interference.

UNIT-3:
16MARKS:

1. Route Optimisation.
2. Packet delivery and Handover management.
3. Tunnelling and Encapsulation.

2MARKS:

1. What is agent discovery?
2. What is agent advertisement?
3. What is agent solicitation?
4. What is tunnelling and encapsulation?
5. What is COA?
6. What is GRE?
7. What do you mean by reverse tunnelling?
8. Time-to-live?
9. Define DHCP.
10. Difference between Home Agent and Mobile Agent.

UNIT-4:
16MARKS:

1. Indirect TCP and Snooping TCP.
2. Windows CE and Symbion OS.
3. Congestion Control Techniques.

2MARKS:

1. Difference between TCP and UDP.
2. Features of TCP.
3. TCP header.
4. What do you mean by sliding window?
5. Methods of Congestion Control.
6. What is selective retransmission?
7. What is explicit notification?
8. Features of Palm OS.
9. Features of Linux OS.

UNIT-5:
16MARKS:

1. Middleware for Application development.
2. Garbage collection.
3. Applications of ADHOC.
4. Energy Efficient Communications.

2MARKS:

1. What is middleware?
2. What is Service discovery?
3. What is the role of gents?
4. What are jini and ninja?
5. Define ADHOC networks.
6. What are the elements of sensor networks?
7. Properties of ADHOC networks.
8. Applications of ADHOC networks.
9. Challenges in ADHOC networks.
10.  What do you mean  by neighbourhood discovery.