INSTITUTE OF AERONAUTICAL ENGINEERING (AUTONOMOUS) Dundigal, Hyderabad

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INSTITUTE OF AERONAUTICAL ENGINEERING (AUTONOMOUS) Dundigal, Hyderabad -00 0 COMPUTER SCIENCE AND ENGINEERING TUTORIAL QUESTION BANK Course Name MOBILE COMPUTING Course Code A70 Class IV B.

Rashmi, Assistant Professor, CSE OBJECTIVES: To meet the challenge of ensuring excellence in engineering education, the issue of quality needs to be addressed, debated and taken forward in a

1 INSTITUTE OF AERONAUTICAL ENGINEERING (AUTONOMOUS) Dundigal, Hyderabad COMPUTER SCIENCE AND ENGINEERING TUTORIAL QUESTION BANK Course Name MOBILE COMPUTING Course Code A70 Class IV B. Tech I Semester Branch Computer Science and Engineering Year 0 7 Course Coordinator Ms. M Geetha Yadav, Assistant Professor, CSE Course Faculty Ms.B Tejaswi, Assistant Professor, CSE Ms.K.Rashmi, Assistant Professor, CSE OBJECTIVES: To meet the challenge of ensuring excellence in engineering education, the issue of quality needs to be addressed, debated and taken forward in a systematic manner. Accreditation is the principal means of quality assurance in higher education. The major emphasis of accreditation process is to measure the outcomes of the program that is being accredited. In line with this, Faculty of Institute of Aeronautical Engineering, Hyderabad has taken a lead in incorporating philosophy of outcome based education in the process of problem solving and career development. So, all students of the institute should understand the depth and approach of course to be taught through this question bank, which will enhance learner s learning process. S. No. Questions Bloom s Taxonomy Level Course Outcome UNIT-I Part - A (Short Answer Questions) Define wireless communication? Knowledge Explain the uses of wireless Technology? Define CDMA? Knowledge Explain how is localization done in GSM are reflected in the database? Understand Define a signal? Knowledge Explain polarization? Understand 9 7 State the challenges in wireless communication? Knowledge 8 State the types of multiplexing? Knowledge 8 9 Explain advantages and disadvantages of CDMA? 0 Explain the type of wireless networks? State some limitations of mobile computing? Understand Define a terms GSM and GPRS? Knowledge Define Ad hoc Networks? Knowledge Define function of AuC? Knowledge

2 Explain the types of multiplexing? Define FDD? Knowledge 7 Define the types of antenna? Knowledge 8 Define SDMA? Knowledge 9 Describe several versions in CSMA? 0 Describe two sub layers in DLC. Part - B (Long Answer Questions) Define the process of call handover when a mobile station moves? Knowledge Explain functioning of a cellular network. How the given set of frequencies are used to increase capacity of a network? Explain how interconnected mobile services switching centers enable a mobile station to communicate to another over long distance? Describe the functioning of a smartcard. Why is secured hardware and software required for a smartcard? Show the various subsystems and units in the GSM system architecture. How do these subsystems and units differ from those in GPRS? Explain using schematic diagrams the synchronous, asynchronous, and synchronous packet types of data transfer? Understand 9 7 Explain the working of a sensor-actuator pair by giving an example? 8 Discuss the advantage and disadvantage of cellular system with small cells? 9 Explain FDMA in detail? 0 Discuss SDMA in detail? Explain the various applications of mobile computing? Explain Why do MAC scheme in wired network fail in wireless networks and how does the multiple access with collision avoidance (MACA) scheme work? Explain the architecture of GSM with a neat diagram? Explain How is routing carried out in GSM networks? Explain in detail about a. Mobile Terminated Call b. Mobile Originated Call With List the suitable various diagrams? handovers carried out in GSM and explain any one of them in detail? Knowledge 7 Explain How is Mobility Management done in GSM? 8 Explain in detail about the General Packet Radio Service (GPRS)? Part - C (Problem Solving and Critical Thinking Questions) Discover the current numbers of subscribers for the different systems. As mobile communication boom, no printed number is valid for too long? Check out strategies of different network operators while migrating towards third generations systems. Why is a single common system not in sight? Explain how will the next generation of wireless systems be different from the G technologies? Briefly explain why security mechanisms are becoming increasingly important in wireless networks? Explain why the international availability of the same ISM bands is important? Explain why, typically is digital modulation not enough for radio transmission. What are general goals for digital modulation. What are typical schemes? Apply Evaluate Apply 8 Apply 7 Apply 7 Apply 8

3 7 8 9 Assume all stations can hear all other stations. One station has to transmit and senses the carrier idle. Why can a collision still occur after the transmission? Explain the term interference in the space,time,frequency, and code domain? Consider duplex channels, what are the alternatives for implementation in wireless networks? What about typical wired networks? Apply 8 Understand 9 Apply 0 Recall the problem of hidden and exposed terminals. What happens in the case of such terminals if Aloha,slotted aloha, reservation Aloha, or Apply MACA is used? Explain how are guard spaces realized between users in CDMA? UNIT II Part - A (Short Answer Questions) Analyze the problems of Wireless Transmission? Apply List the Services of GSM? Knowledge 9 Explain the different types of Satellite Orbits? Explain how the Is IEEE 80. and Wi Fi same/ State the purpose of WiFi? Define handover? Knowledge Describe the definition for GPRS? Knowledge 7 Define DAB? Knowledge 8 Define WAP architecture? Knowledge 8 9 Define multipath effects and interference? Knowledge 7 0 List the process of DAB center? Knowledge 8 Explain about DVB container? List the registers maintained by the gateway of satellite? Knowledge State the primary goal of IEE 80.? Knowledge Explain Why generic routing encapsulation is used? Explain Advantages of wireless LAN? Understand 7 Explain the need for mobile IP? Understand 7 8 List down the goals of wireless LAN? Knowledge 8 9 List the requirements of mobile IP? Knowledge 8 0 Explain the design goals of mobile IP? Explain the term mobile node? Understand Explain about IP packet delivery? Discuss about agent discovery? Describe about Tunneling? Explain about encapsulation? Part - B (Long Answer Questions) List the frequency bands and number of sub-carriers or carriers in a CDMA000 system? Knowledge Define the FHSS frequency-hopping technique. How does it help in receiving signals in the presence of frequency selective fading of the Knowledge signals? List the basic features of CDMA systems. Explain soft handover? Knowledge Explain how space, time, frequency, and code division methods control the simultaneous access to the medium by multiple source or channels of mobile terminals and base transceivers? Expain the functions of IS-9 processing units for convolution, symbol repetition, interleaving, long code sequence generator? Explain the use of multiple carriers by orthogonal coding. How does an OFDMA system differ from a CDMA system? Analyze 8 Analyze 8 7 Analyze the recommended standards in IMT-000? Analyze 8 Compare the features of HSPA and LTE pre G? 9 Describe forward-and reverse link structure and frames in IS-9?

4 0 Explain in detail the three phases of EY-NMPA in Hiperlan? List the various information bases in Hiperlan and explain the same? Knowledge Discuss the architecture of Bluetooth in detail? Explain the architecture of WI FI in detail? Explain the architecture of WIMAX in detail? Describe Hiperlan architecture with suitable diagrams? List out the various MAC management services and explain any of them in detail? Knowledge 7 Draw the MAC frame format and explain its various fields in detail? Knowledge 9 8 Explain DFWMAC-DCF using CSMA /CA? 9 Explain DFWMAC-DCF with polling? 0 Explain mobile TCP. How does supervisory host send TCP packets to the Explain mobile IP node sec suite and of to a protocols? fixed TCP connection? Give the advantages Describe the explicit notification schemes. What are the changes required Describe at slow the receiver start of congestion and the transmitter control. How to enable can fast explicit recovery takes place in the congestion avoidance phase.? Explain the difference between the connection less and connection oriented protocols. Give Examples.? Explain how registration of a Mobile Node is carried out with appropriate request and reply packet formats? Explain how a. End to End packet delivery is done in mobile IP? b. Agent advertisement is done in mobile IP? 7 Explain five layers in the IP protocol? Explain the functions of each layer? Understand 8 Explain in detail about the IP in IP and minimal encapsulations? 9 Explain in detail about GRE encapsulation with the appropriate packet format? Describe the process of optimization in Mobile IP with a suitable 0 timeline Explain diagram.? in detail about DHCP? Discuss DSDV routing in detail? Discuss DSR routing in detail? Understand Explain Why is conventional routing in wired networks not suitable for wireless networks? Substantiate your answers with suitable examples? Explain How is multicast routing carried out in ad-hoc networks? Part - C (Problem Solving and Critical Thinking Questions) Explain the typical data rates in DECT. How are they achieved considering the TDMA frames? Explain multiplexing schemes that are applied in DECT and for what purpose? Explain the new infrastructure needed for GPRS, but not for HSCSD? Which components are new and what their purpose? Understand 7 Compare the complexity of DECT with that of GSM? Apply 8 Name basic applications for satellite communication and describe the trends? Apply Discuss the concept of handover in connection with the satellite communication system? Apply 7 Describe indirect TCP. Explain the modifications in indirect TCP as the selective repeat protocol and mobile end transport protocol? Apply 8 Explain the characteristics do the different orbits have? What are their pros and cons? 9 List the basic features of CDMA systems. Explain soft handover? Apply 0 Write the general problems of satellite signals travelling from a satellite to a receiver? Apply 8 UNIT-III

5 Part - A (Short Answer Questions) State the functions which support service and connection control? Knowledge List the three Low Power States provided by Bluetooth? Knowledge 8 Explain How user datagram protocol is used? Define COA? Knowledge Explain different types of handover? Explain Advantage and Disadvantage of Mobile TCP? 7 Define Transparency? Knowledge 8 Show the indirect TCP model with neat diagram? Understand 9 9 Translate other methods of mobile TCP layers? Understand 9 0 Explain about traditional TCP? Understand 9 Discuss about congestion control? Describe slow start? Explain about indirect TCP? List advantages of Indirect TCP? Knowledge Describe the term snooping TCP? Understand Discuss about mobile TCP? Understand 7 List the advantages of mobile TCP? Knowledge 8 Explain selective retransmission? 9 Define generic routing encapsulation? Knowledge 0 Discuss about binding request? Understand Define the need of routing? Knowledge List the requirements for the development of mobile IP standard? Knowledge 7 List database transactional models? Knowledge 8 Define Perfecting? Knowledge 8 List database hoarding techniques? Knowledge 8 Explain the mobile node? 7 Discuss about the data recovery process? 8 Explain need of routing? 9 Describe data caching? 0 Describe about client server computing? Understand 9 List the transaction models? Knowledge 9 Discuss about query processing? Understand Explain about data recovery process? Explain three-tier architecture? Understand Define Quality of Service? Knowledge List advantages of hoarding the data at mobile device? Knowledge Part - B (Long Answer Questions) Explain the sequence number, window size, and acknowledgement number fields used in data flow control at TCP transport layer? List the special requirements in transport layer protocols in case of.g/g mobile networks.? Knowledge Explain fast transmission and fast recovery triggered? Explain mobile TCP. How does a supervisory host send TCP packets to the mobile node and to a fixed connection? Explain transaction oriented TCP. How does the integration of connection establishment, data transfer, and close functions? Describe the special requirements in transport layer protocols in case of.g networks? Understand 7 Describe slow start of congestion control. How can fast recovery takes place in the congestion avoidance phase? Understand 8 Explain the functions of snooping sub layer in the functions? 9 List the advantages and disadvantages of snooping TCP? Knowledge 0 Describe the modifications in snooping sub-layer functions? 00 Write about special requirements in transport layer? Understand 0 Explain in detail about WAP architecture?

6 Write notes on WDP and WTLS? Write notes on wireless sessions protocol? Understand 9 Discuss about WAE? Discuss about WTP and its classes? 7 Explain the following: Snooping TCP and Indirect TCP.? 8 Explain classical TCP improvements and snooping TCP? Understand 9 Discuss about the WWW programming model in detail? 0 Explain about the architecture of WTA? Understand Explain the situations in which a database can crush. How does a database recover using a recovery manager? Understand 9 Discuss in detail about any two Pervasive Applications of your choice in detail.? Explain about the various hardware components involved in Pervasive Computing Devices.? Understand Write the advantages of hoarding data at the mobile device? Write brief notes on the following. a. Explain Speech in Recognition detail about Bio-Metrics. List out its merits and demerits? Understand 7 Explain how is synchronization carried out in a Pervasive Environment? Write brief notes on the syncml tool? 8 Explain the various issues related to device management and how are they dealt with? 9 Explain how a Pervasive Web Application can be secured using an Authentication Proxy? Understand 0 Describe data caching architecture? Explain how security is achieved in MVC and JSP based applications? Understand Write the advantages and disadvantages of stateless and stateful cache invalidation? Understand Discuss in detail about the access form PCs.? Understand Explain the advantages of using an adaption mechanism in client-server architecture.? Understand Explain how is access carried out in case of a PDA? Explain in detail about access via WAP? Understand 9 7 Explain the database transaction models and ACID rules? Understand 8 Explain data recovery process in detail? Understand 9 Explain about power aware computing? Understand Part - C (Problem Solving and Critical Thinking Questions) Explain G and G systems can bothe transfer data. Compare these approaches with DAB/DVB and list reasons for and against the use of Understand DAB/DVB? Explain which web pages would be appropriate for distribution via DAB/DVB? Define IEEE 80., Hiper LAN, and Bluetooth respectively. Solve the hidden and terminal problem? Apply Discuss in what solutions can collisions occur in all three networks? Understand 7 Distinguish between collisions on PHY and MAC layer? Apply If Bluetooth is a commericial success, what are remaining reasons for the use of infrared transmission for WLANs? Explain packet flow if two mobile nodes communicate and both are in 7 foreign networks? Explain how tunneling works in general and especially for mobile IP using 8 IP-in-IP minimal, and generic routing encapsulation, respectively? Explain the benefits of location information for routing in ad-hoc 9 networks, which problems arise? 0 List the entities of mobile IP and describe data transfer from a mobile node to a fixed node and vice-versa. Why and where is encapsulation needed? Apply Understand Knowledge

7 Name the main difference between multi-hop adhoc networks and other networks? Apply 9

8 UNIT IV Part - A (Short Answer Questions) Explain about Push- based data delivery mechanisms? Explain about Selective Tuning? Define Hash-based method? Knowledge Define local optimization? Knowledge 9 Define Directory method? Knowledge List the various types of indexing techniques? Knowledge 8 7 Define data dissemination broadcast models? Knowledge 8 Define data dissemination broadcast models? Knowledge 9 Explain flat disk model? 0 Explain directory method? Explain about communications asymmetry? List advantages of pull based mechanisms? Knowledge Explain about hybrid mechanisms? Discuss about hash based mechanisms? Understand Explain about index based mechanisms? Write about communication asymmetry? 7 Explain temporal addressing? 8 Explain about data delivery methods? 9 Explain about demand data scheduling? Understand 9 0 Explain distributed index based method? Part - B (Long Answer Questions) Explain with diagram client and server framework? Understand Explain different types of synchronization? Explain the need for domain-dependent specific rules. Explain the term WBXML? Understand Explain digital audio broadcasting..? Understand 9 Describe pull-based data delivery mechanism. What are the advantages and disadvantages of pull-based data delivery? Understand Explain push based data delivery methods in detail? Understand 7 Explain selective tuning and indexing techniques? Understand 8 Write about communication asymmetry with neat diagram? 9 Explain push-pull mechanism. In detail explain about IPP? Understand 9 0 Which type of indexing is suitable for broad casting data through wireless channel? Why? Understand 7 List out the advantages of data broad cast over point to point access? Knowledge Explain the following selective tuning techniques. a) Temporal addressing. b) Broadcast addressing c) Index based method. d) Distributed index based method? Explain data delivery methods in detail? The push based broadcast are not suitable for large data size? Justify. Analyze Explain about on demand data scheduling? Understand List the steps involved in retrieving the indexed data frames? Knowledge 8 Part - C (Problem Solving and Critical Thinking Questions) Show the interaction of mobile IP with standard TCP. Draw the packet flow from a fixed host to a mobile host? Apply Name the requriments for a mobile IP and justify them. Does mobile IP fulfill them all? List the entities of mobile IP and describe data transfer from a mobile node to a fixed node and vice versa? Show the steps required for a handover from one foreign agent to another foreign agent including layer and layer? Apply Knowledge Apply

9 Explain packet flow if two mobile nodes communicate and both are in networks. What additional routes do packets take if reverse tunneling is required? UNIT-V Part - A (Short Answer Questions) Mention the sensor networks applications? List the properties of MANETs? Knowledge Explain fixed infrastructure architecture? Define spectrum? Knowledge Define applications of MANETs? Knowledge Define routing algorithms? Knowledge 7 Explain wireless sensor networks? 8 Analyze distributed network characteristics? Understand 9 Explain flat routing table driven protocol? Understand 7 0 List the characteristics of MANETs? Knowledge Explain the need for Ad Hoc networks? Explain routing in MANETs? Understand 7 List the types of MANET routing algorithms? Knowledge 8 Explain DSDV? Understand Discuss about dynamic source routing? Understand List the advantages in DSR? Knowledge 7 Explain CGSR? 8 Discuss about security in MANETs? 9 Explain memory and file management? 0 Describe java card? Write the techniques for composing applications? Explain about operating systems? Show that an XML document which can be used as Contacts in a mobile smart phone? Understand 9 Identify the I/O devices in subsystems management? Understand 7 Mention the properties in windows phone 7 OS features? Understand 9 Explain how does data store in windows CE databases and files? 7 Explain how are the applications developed for a windows phone 7 device? 8 Explain memory manager features in Windows CE? 9 Write the functions of program and storage memories? 0 Define symbian OS? Part - B (Long Answer Questions) Write about the application of wireless sensor networks in home personal area networking? Explain MANETs. How does a MANETs differ from a fixed infrastructure network? Understand 7 Describe an application of defining the cluster of nodes and features of CGSR protocol. Explain how MANETs are deployed in various applications? Describe the properties of MANETs? Understand Explain the requirements of a mobile file system over the conventional one? 7 Write the advantages of MANETs and wireless sensor networks integrated with IPv? 8 Explain in role of a gateway in connecting using different protocols? Understand 9 Discuss CODA file system? Understand 0 Describe TORA. Compare the features of TORA with DSR and AODV protocols? Compare the reactive and proactive routing protocols? Understand 7 How does dynamic source routing handle routing? What is the motivation Explain the behind security dynamic threats source to a MANET? routing compared Why a MANET to other faces routing algorithms grater security fixed threats networks? than a fixed infrastructure networks?

10 Describe security problems in MANETs? Explain destination sequence distance vector routing algorithm in MANETs? Understand Explain in detail AODV routing algorithm for MANETS? Understand 9 7 Explain the disadvantages of MANETS? 8 Explain mobile ad-hoc network? Explain in detail about MANETS? Understand 9 Explain CLDC and CDC configurations? 0 Explain JME architecture? Write the packages in JSE? Explain the APIs and class libraries in each? Compare DOM and SAX models of the documents. How are these parsed? Explain with examples? Write requirements for JAvaCard virtual machine? Knowledge Explain XML based languages used in mobile application? Give examples? Part - C (Problem Solving and Critical Thinking Questions) Name mechanisms to improve web access for handheld devices. What is their common problem and what led finally to the development of WAP? Compare the presented protocol stacks for WAP.0 and give application examples? Name advantages and disadvantages of user acknowledgement in WTP. What are typical applications for both cases? Explain the primary goals of WAP Forum efforts and how they are reflected in the intial WAP protocol architecture? Explain why is strong consistency of file systems problematic in a wireless and mobile environment? What are the alternatives? Name key difference between WAP.x and i-mode. What were problems in the early WAP days and why was i-mode that successful in Japan? Evaluate Apply 7 Apply 8 Apply Prepared by : Ms. B.Tejaswi, Assistant Professor HOD, COMPUTER SCIENCE AND ENGINEERING

INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad

INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad -00 0 WIRELESS NETWORKS AND MOBILE COMPUTING TUTORIAL QUESTION BANK Course Name WIRELESS NETWORKS AND MOBILE COMPUTING Course Code