JNTU
JNTU B.Tech IV WIRELESS NETWORKS AND MOBILE COMPUTING Previous Question Paper (May/June - 2019 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
What are the limitations of mobile computing?
Answer
The primary limitations include insufficient bandwidth, which constrains data transmission rates, and limited power supply, as mobile devices rely on batteries with finite capacity. Additionally, mobile computing faces challenges related to frequent disconnection due to mobility and security vulnerabilities inherent in wireless transmission.
What are the properties of Adhoc Networks?
Answer
Ad-hoc networks are characterized by dynamic topology, where nodes can join or leave the network arbitrarily. They operate in a decentralized manner without a fixed infrastructure or central controller. Furthermore, they rely on multi-hop routing, where nodes act as both hosts and routers to forward packets for other nodes.
How frequency reuse is possible in SDMA?
Answer
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List the features of WLAN.
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What is encapsulation?
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Write about agent advertisement packet of mobile IP?
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What is Data synchronization?
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Describe Flexible indexing method.
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What is the meant by mobile agent?
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Describe java card.
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Part B
Explain the protocol architecture of HIPERLAN.
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Explain the functional architecture of GSM.
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What is Bluetooth? Explain Bluetooth architecture.
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Describe the process of call handover in GSM.
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Explain SDMA and CDMA techniques used to access the channel by mobile subscriber.
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Explain the physical layer in IEEE 802.11.
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Why do MAC scheme in a wired network fail in wireless networks and how the multiple access with collision avoidance does is works- Discuss in detail.
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What is mobile IP? Explain the tunnelling in the context of mobile IP.
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How does indirect TCP works. Discuss its advantages and disadvantages.
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Explain about the location management in mobile IP.
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Explain snooping TCP.
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Explain the concept of cache invalidation mechanisms.
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Which type of indexing is suitable for broadcasting data through wireless channel? Why?
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Explain about data recovery process.
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Discuss about communication asymmetry with neat sketch.
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Discuss MANETs. How does MANETs differ from a fixed infrastructure network?
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Describe the WAP protocol stack while enumerating the functions of different layers.
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What are the applications of MANET and Explain challenges of MANET.
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Discuss about palmOS and symbianOS briefly.
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