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    QUESTION BANKANTENNAS AND WAVE PROPAGATION

    UNIT-I

    PART-A

    1. Define Isotropic radiator.

    2. Calculate the directivity of an Isotropic antenna.

    3. Differentiate Radian & Steradian.

    4. Define Gain & Beam width of an antenna.

    5. Derive an expression for effective aperture area of antenna.

    6. Calculate the maximum effective aperture area of antenna which is operating at a wavelength

    of 2 meters and has a directivity of 100.

    7. Define Antenna Efficiency.

    8. Write note on radiation pattern.

    9. What is radiation intensity and explain in terms of poynting vector?

    10. Explain directivity of an antenna.11. Find out the radiation resistance of a ?/16 wire dipole in free space.

    12. Define power gain and write down the relation between directive gain and power gain.

    13. Define radiation resistance and write down the expression for it.

    14. Differentiate antenna bandwidth and beam width.

    15. Define beam solid angle and antenna beam efficiency.

    16. An antenna has a radiation resistance of 72 Ohms, a loss resistance of 8 Ohms and a power

    gain of 12dB. Determine the antenna efficiency and its directivity.

    17. Define Terminal impedance.

    18. State reciprocity theorem and briefly explain it.

    19. Calculate the radiation resistance of short dipole.20. Calculate a maximum effective aperture of a half wave dipole.

    21. Calculate the length of a half wave dipole antenna meant to have correct half wave length at

    60 MHz.

    22. Calculate the maximum effective aperture of a microwave antenna which has a directivity of

    900.

    23. Calculate the radiation resistance of an antenna which is drawing 15A current and radiating 5

    KW.

    24. Calculate the power being radiate by an antenna having a radiation resistance of 50 Ohms

    and is drawing a current of 8A.

    25. Calculate the radiation resistance of an antenna which is radiating 1000W and drawing

    current of 5A.

    26. How much current does an antenna draw when radiating 1000W and is having a radiation

    resistance of 300 Ohms.

    27. Mention the radiation and Induction field component for a small current element.

    28. Show the directivity of an electric current element 3/2.

    29. Define poynting vector.

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    30. What is effectiveness ratio?

    31. What is scattering loss aperture?

    32. Define effective length of an antenna.

    PART - B

    1. Explain the retarded vector potential in detail.

    2. Derive an expression for the power radiated by the current element and calculate the radiation

    resistance.

    3. Derive an expression for the far field component of a half wave dipole of an antenna.

    4. a) Derive the total power radiated by half wave dipole. b) Show that the radiation resistance of

    a half wave dipole is 80?2 (dl/?)2 Ohms.

    5. Explain the reciprocity theorem in detail.

    6. Derive an expression for the electric field and magnetic field due to a current element at

    adistance point in free space.

    7. a) Derive an expression for the gain of half wave dipole. b) Explain effective aperture areawith its types in detail.

    8. At what distance in ?, is the radiation component of magnetic field twice the inductance

    component ? At what distance is it 100 times.

    UNITII

    Antenna Arrays

    PART - A

    1. What is an array and mention the various forms of antenna arrays?

    2. What is a uniform linear array?

    3. What is Broad side array and draw its radiation pattern?

    4. What is End fire array and draw its radiation pattern?5. What is collinear array?

    6. What is parasitic array?

    7. What is pattern multiplication concept?

    8. List some of the advantages of pattern multiplication.

    9. What is tapering of array?

    10. Write a note on Binomial array.

    11. How the secondary lobes are eliminated?

    12. What is Pascals triangle?

    13. What is a Phased array?

    14. What is a smart antenna?

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    PART-B

    1. Write short notes on various forms of arrays i.Broad side array ii.End fire array iii.Collinear

    array iv.Parasitic array

    2. Derive the expression for the far field pattern of an array of 2isotropic point sources i) Equal

    amplitude and phase ii) Equal amplitude and opposite phase iii) Unequal amplitude and any

    phase

    3. Explain the principle of Pattern multiplication.

    4. Explain the array of N- sources of equal amplitude and spacing- Broad side case i. Direction

    of pattern maxima ii. Direction of pattern minima ii. Beam width of major lobe.

    5. Explain the array of N- sources of equal amplitude and spacing- End fire case i) Direction of

    pattern maxima ii. Direction of pattern minima ii) Beam width of major lobe.

    6. Write short notes on i. Binomial arrays ii. Phased arrays.

    UNIT-III

    SPECIAL PURPOSE ANTENNASPART-A

    1. What are the applications of loop antenna ?

    2. Give the reason for poor radiation of a loop antenna .

    3. Distinguish between sectorial and pyramidal Horn antenna.

    4. What are the advantages of folded dipole ?

    5. What is a folded dipole ? What are its important properties ?

    6. Draw the structure of Log- periodic antenna.

    7. What is a YagiUda array ?

    8. State Babinets principle

    9. Why is flaring required in Horn antennas ?10. What is primary radiation and secondary radiation as applicable to parabolic reflector ?

    11. What is the reason for using Yagi antenna for TV broadcast reception ?

    12. What are the applications of YagiUda antenna ?

    13. What are parasitic elements and where are they used ?

    14. How does a parabolic reflector provide very high gain ?

    15. What is a parasitic element ? How does it act when length is greater than and smaller than ? /

    2 ?

    16. What is cheese feed as applicable to parabolic reflectors ?

    17. Mention the antennas used in medium frequency range .

    18. How is a high frequency dipole antenna fed and matched with driving source ?

    19. Sketch the diagrams of various types of Horn antennas.

    20. What are Traveling wave antennas ?

    21. Distinguish between resonant antenna and TWA ?

    22. Distinguish between standing wave antenna and TWA ?

    23. Define Spill over.

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    24. What is meant by smart antenna ?

    25. What is the principle of microwave antenna ?

    26. Define pitch angle. When a = 0o and a = 90o, how does the helical antenna behave ?

    27. What are the parameters to be considered in the design of an helical antenna ?

    28. What are the different modes of operation that can be used in Helical antenna ?

    29. List the applications of Helical antenna.

    30. Why does the normal mode of operation is not preferred in Helical antenna ?

    31. Draw the structure of an Helical antenna with its parameters.

    32. What is Cassegrain feed mechanism ?

    PART - B

    1. Explain the principle of traveling wave radiator.

    2. Derive an expression for the radiated field due to a TWA.

    3. Obtain the expression for the field produced by TWA and compare its radiation with resonant

    antenna.

    4. Obtain the expression for the emf due to loop antenna and explain its use as a Direction finder5. Explain the special features of various types of Horn antennas and frequency independent

    antennas.

    6. With a suitable diagram, discuss the construction and operation of a Yagi antenna.

    7. Write detailed notes on (a) Parabolic reflectors (b) Log Periodic antennas

    8. (a) Explain the principle of operation and applications of folded dipoles. (b) With a suitable

    diagram explain the construction and principle of operation of a log periodic antenna.

    9. Write short notes on (a) Slot radiators (b) Loop antennas

    10. How does a log periodic antenna provide a large bandwidth of operation?

    11. Explain the principle of operation and applications of loop antenna.

    12. Write detailed notes on (a) Horn antennas (b) Frequency independent antennas.13. Explain the principle of operation and applications of loop antenna.

    14. Explain in detail the working principle of Helical antenna in (a) Normal mode (b) Axial

    mode

    15. Explain in detail the design aspects of Microstip antenna.

    UNIT-IV

    Radio Wave Propagation

    PART-A

    1. What are the various modes of Propagation?

    2. What is Duct Propagation

    3. What do you mean by ground Wave Propagation

    4. What do you mean by Sky Wave Propagation

    5. What do you mean by Space Wave Propagation

    6. What do you mean by Troposphere Scatter Propagation

    7. Write short notes on Structure of Troposphere

    8. Write short notes on Structure of Ionosphere layers

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    9. Write short notes on D region

    10. Write short notes on Normal E region

    11. Write short notes on Sporadic E region

    12. Write short notes on F region

    13. What is Critical Frequency

    14. What is Magneto Ionic Splitting?

    15. Define Gyro Frequency

    16. Define Virtual Height

    17. Define Maximum Usable Frequency(MUF)

    18. Define Skip Distance

    19. Define Optimum Working Frequency(OWF)

    20. State some Ionospheric abnormalities

    21. Define Sun Spot Cycle

    22. Define Fading and Mention its types

    23. What are Whistlers24. What do you understand by Multi hop Propagation?

    25. Write the ranges for various layers of atmosphere.

    PART-B

    1. Explain briefly the various modes of Propagation

    2. Explain Ground Wave Propagation in detail

    3. Explain the Structure of Atmosphere

    4. Explain the various layers of Ionosphere

    5. Explain the effect of Earths Magnetic Field on Radio wave Propagation

    6. Explain Virtual Height and derive the Expression

    7. Explain Maximum Usable Frequency and show how to Calculate MUF8. Explain (a) Skip Distance (b) Optimum Working Frequency

    9. Explain briefly about Ionospheric abnormalities

    10. Determine the Effective Earths Radius in Space Wave Propagation

    11. Explain Super Refraction.

    UNIT V

    ANTENNA MEASUREMENTS

    PART A

    1. What are the types of antenna measurements?

    2. Define Impedance measurements.

    3. Define Pattern measurements.

    4. Define Gain of antenna.

    5. Define Radiation Resistance.

    6. Define Transmission bandwidth of an antenna.

    7. Define Power Gain.

    8. Define VSWR.

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    9. What is standing wave ratio method of impedance measurements?

    10. Define Radiation pattern measurements.

    11. Define Directivity.

    12. Define antenna Radiation Efficiency.

    13. Define Polarization measurement.

    14. Define Antenna Aperture Efficiency.

    15. List the different methods used for measuring the Polarization.

    16. Define Vertical Incidence measurement.

    17. Define Oblique incidence measurement.

    18. Give the relation between Vertical and Oblique incidence transmission.

    19. Determine the gain and beam width for a parabolic antenna with 10M-diameter dish and

    dipole feed at 10GHz.

    20. Define Beam width of antenna.

    PART B

    1. Describe the methods for measuring the gain and beam width of antenna.2. Describe the methods for measuring the Power gain, Radiation efficiency and Transmission

    bandwidth of an antenna.

    3. Describe the Slotted line technique for Impedance measurement.

    4. Describe how the radiation pattern and Radiation resistance of a given antenna can be

    measured experimentally.

    5. Derive the relation between oblique and vertical incidence transmission.

    6. Write short notes on Vertical incidence measurement of the ionosphere.

    7. Write short notes on Oblique incidence measurement of the ionosphere.

    8. Describe briefly about Polarization measurements.

    9. Derive an expression to determine Antenna efficiency and Antenna Aperture.10. Derive an expression to determine the Directivity of an antenna.

    By

    Gurunathan.M

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    MEASUREMENTS AND INSTRUMENTATION

    2 MARK

    UNIT I

    BASIC MEASUREMENT CONCEPTS1. What is mean by measurement?

    2. What are the main functional elements in measurement system?3. How are instruments classified?

    4. Define static error.

    5. Define accuracy.6. Define sensitivity.

    7. Define dead time.

    8. What is environmental error?9. What are random errors?

    10. Define dynamic error.

    UNIT II

    BASIC ELECTRONIC MEASUREMENTS1. What are the main parts in CRO?

    2. What is the purpose of time base generator?3. Define deflection sensitivity.

    4. What is known as fluorescence?

    5. Explain split beam method.

    6. What are the two types of delay line used?7. What is dual trace CRO?

    8. What is Q factor?

    9. What is a sampling oscilloscope?10. What is the purpose of time base circuit in a CRO?

    11. What are the applications of Q meter?

    12. What is vector impedance meter?

    13. Define deflection sensitivity.14. What are the various sources of errors in Q-Meter?

    UNIT III

    SIGNAL GENERATORS AND ANALYZERS1. What is an oscillator?

    2. What is known as duty cycle?3. Define Rise time, fall time.

    4. Define droop.

    5. Define rounding.

    6. Define pulse width.7. Define pulse period.

    8. What is a sweep frequency generator?

    9. What are the causes of distortion?

    10. What is resolution in FFT spectrum analyzer?

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    UNIT IV

    DIGITAL INSTRUMENTS1. What is analog instrument?

    2. What is digital instrument?

    3. What is DVM?

    4. What is known as quantization?5. What is known as quantization error?

    6. How is DC current measured in digital multimeter?

    7. What is offset current error?8. What is the need for period measurements?

    UNIT V

    DATA ACQUISITION SYSTEMS AND FIBER OPTIC

    MEASUREMENTS1. What is meant by data acquisition?

    2. What is a multiplexer?

    3. What are the two types of MUX operation?4. What you mean by ATE?

    5. What is IEEE 488 bus system?6. Why ATN line is used?

    7. What is meant by talker, listener, controller?

    8. What are the three layers in OFC?

    16 MARK QUESTIONS

    UNIT I

    BASIC MEASUREMENT CONCEPTS1. Discuss different type of Standards of measurement. Classify and explain the different type of

    Standards of measurement.

    2. Discuss basic characteristics of measuring devices.

    3. Define and explain with examples the different types of possible errors in measurement.4. With neat diagram explain the construction, working, torque equation and advantages ,

    disadvantages of PMMC instrument.

    5. Explain any one bridge circuit for measurement of inductance.

    UNIT II

    BASIC ELECTRONIC MEASUREMENTS1. Explain the main parts in CRO.

    2. Explain the main parts in CRT.

    3. Explain with block diagram of Sweep frequency generator.

    4. Explain with block diagram of dual beam oscilloscope.5. Explain with block diagram of dual trace oscilloscope.

    6. Explain the working principle of a vector voltmeter with the help of a neat block diagram.

    7. With a neat block diagram explain the function of a general purpose oscilloscope.

    8. Explain different types of power measurement.

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    UNIT III

    SIGNAL GENERATORS AND ANALYZERS1. Explain how power is measured in an optical fiber.

    2. Explain with block diagram of Optical time domain reflectometer.

    3. Explain the wave analyzer.

    4. Draw and explain the working of Digital multimeter5. Explain the Instruments used in computer controlled instrumentation

    6. Describe the working of function generator with the a block diagram .

    UNIT IV

    DIGITAL INSTRUMENTS1. Explain with neat diagram.(ii) Single slope ADC

    (ii) Successive approximation ADC

    2. Draw the Circuit diagram for n bit binary weighted resistor DAC & obtain

    an expression for output voltage.

    3. Write short note on Flash type ADC.4. Explain with block diagram, the operation of ramp type DVM.

    5. Draw and explain the circuit diagram of Digital frequency meter.

    UNIT V

    DATA ACQUISITION SYSTEMS AND FIBER OPTIC

    MEASUREMENTS1. With the help of block diagram explain the data acquisition system.

    2. With the help of block diagram explain analog to digital multiplexing.3. Explain with block diagram the automatic test system to analyses an audio

    Amplifier & radio receiver.

    4. How signal is transmitted in a microprocessor based measurement?

    5. Explain the sequence of operations in an IEEE 488 bus system.

    By

    Gurunathan.M

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    VLSI DESIGN

    PART - A ( 2 marks)1. What are the different MOS layers? 2. What are the two types of layout design rules? 3.

    Define rise time and fall time. 4. What is a pull down device?

    5. What is mean by Epitaxy?

    6. What is isolation?7. What are the steps involved in manufacturing of IC?

    8. What is the special feature of Twin-Tub process?

    9. Draw the Isotropic etching process diagram.10. What is silicide?

    11. What is AOI?

    12. Define fabrication process.13. Draw the graph of n-MOS depletion mode.

    14. Draw the Dc transfer characteristics curve.

    11. Define noise margin.

    15. Draw the symbol for tristate inverter.

    16. Differentiate the nMOS from pMOS.17. What are all the factors can be extracted from the Vth equation.

    18. Define the Power dissipation19. Define bit and byte.

    20 Define FSM.

    21 What do you mean by Data flow model?

    22. Define Mealy network.23. What is component in VHDL?

    24 Which MOS can pass logic 1 and logic 0 strongly?

    25 What is AOI logic function.26 What are the methods for programming the PALs?

    27 What are all the types of programming PALs?

    28 Define PLD.

    29 Draw the basic PLA.30 Differentiate the PLA from the PAL.

    31. Define test bench.

    32. What is FPGA?33. What is super buffer?

    34. What is meant by Steering logic?

    35. Give the advantages and disadvantages of SOI.

    PART-B (16&8 Marks)1. Differentiate the p-well CMOS process from n-well CMOS process. Explain the n-well

    CMOS process to fabricate the n-switches.

    2. Discuss the steps involved in IC fabrication process.

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    3. Describe n-well process in detail. 4. Explain the DC characteristics of CMOS inverter with

    neat sketch. 5. Explain channel length modulation and body effect.6. Explain the different regions of operation in a MOS transistor. 7. Write a note on MOS

    models. 8. Explain in detail any five operators used in VHDL.

    9. Write the VHDL code for 4 bit ripple carry full adder. 10. Give the structural description for

    priority encoder using VHDL.11 List out the layout design rule. And draw the physical layout for one basic gate and two

    universal gates.

    12 Explain the n MOS and p MOS enhancement transistor with its physical structure .13. Derive and explain the

    (I) Threshold voltage equation,

    (II) MOS DC equation.14. Explain the complimentary CMOS inverter DC characteristics.

    15. Write short notes on

    (I) Noise Margin,

    (II) Rise Time,

    (III) Fall Time.16. Develop the project using VHDL to realize the function of a ripple carry adder and draw its

    RTL.17. Design a full adder by cascading two half adders and develop a project to realize it in model

    simulator 6.0.

    18 Briefly explain the following terms

    (i) Design of switches with MOSFETs,(ii) Transmission gate,

    (iii) Muxs using TG.

    19. Draw the physical layout for the following Boolean expression

    a. y = (a +b) + c + de

    b. x = (lmnop) + q(rs + rs)20. Differenced the PALs from PLAs. And explain the 22V10 standard logic structure with the

    architecture.21. Explain the methods used to programme the PALs with neat diagram.22. Explain the Field programmable gate array with the architecture and logic blocks .

    23. Draw and explain the typical architecture of PAL.24. Explain test bench with an example and ways of generating waveforms.

    25. Write a VHDL description to design Flip Flops( RS, JK, D, T) and write its test bench.

    26. Write a VHDL description to design 8:1 MUX using two 4:1 MUX.27. Write a VHDL description to design 8:1 MUX and DEMUX.

    28. Write a VHDL description to design a undown counter and write its test bench.

    29. Explain type, Operators, timing controls, Procedural assignments.

    30 Draw and explain with diagrams tally circuits.31. Draw and explain barrel shifters.

    32. Explain with neat diagrams dynamic CMOS clocking.

    33. Derive an expression for pull up and pull down ratio for transistors.

    34. Describe in detail the chip with programmable logic structures.35. Explain packages in vhdl with example.

    36. With neat diagram explain finite state machine PLA.

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    37. Explain structured design of combinational circuits- EXOR Structure, Multiplex Structure.

    39. Discuss the steps involved in fabrication of BICMOS technology.

    By

    Gurunathan.M

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    COMPUTER NETWORKSUNIT-I PHYSICAL LAYER

    PART-A (2 Marks)1. What are the five important components of data communication?

    2. List two advantages of layering principle in computer networks.

    3. With the example explain half duplex communication.4. Mention any two functions of session layer.

    5. Name four topologies of computer networks.6. Suggest two points to improve the performance of network.

    7. With the example explain half duplex communication.

    8. Define protocol.9. Differentiate guided and unguided media.

    10. What is the Null modem?

    11. Define Topology.

    12. Define standards.13. What are the design factors for transmission media?

    14. Difference between Guided media and un guided media.15. Define line coding.

    16. What are most popular modems?17. Define network.

    18. What are the criteria for networks for networks?

    19. Define point to point and Multi point.20. What is DSL

    PART-B1. Explain the OSI-ISO model I of computer with neat diagram. (16)

    2. Distinguish between Point to Point links and multi-point linkswith relevant diagram. (16)

    3. (i) compare connection oriented and connection less service. (8)(ii) Differentiate Guided media and un guided media. (8)4. Write shot notes on

    a. TCP/IP protocol suite(4)b. Networks Model(4)

    c. datagram network(4)

    d. Virtual circuit network(4)5. Perform a comparative study between the ISO-OSI model and TCP/IP reference

    Model. (16)6. Explain how cable TV used for data transfer?

    7. Explain different switched networks.

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    UNIT-II DATA LINK LAYER

    PART-A ( 2Marks)1. Define framing?

    2. What is byte stuffing?

    3. Write the importance of CRC in the network.

    4. Sketch the Manchester encoding for the bit steam 0001110101.5. Name the protocols used for CSMA

    6. Wireless network and mobile networks are not identical explain

    7. What is importance of hamming distance? What is Manchester Encoding?8. What is mean by count to infinity problem?

    9. What is Manchester Encoding?

    10. What is the importance of variable sized sliding window in TCP?11. Explain Aloha protocol.

    12. Give the significance of termination.

    13. What is IEEE 802.4 Standard?

    14. Define Syndrome?

    15. What are the various ARQ Retransmission strategies?16. What is mediea sharing? State types of media sharing

    17. State different IEEE 802 protocol.18. Define throughput.

    19. Define collision?

    20. What is VLAN

    21.Differentiate Wired LAN and Wireless LAN22. What is Bluetooth?.

    PART-B1. Write short notes on.a. GO Back NARQ (8)b. Selective Repeat ARQ (8)2. (i) ExplainProtocols for noiseless and Noisy channels. (8)

    (ii) Explain numbering of frames in GO Back NARQ,Selective Repeat ARQ protocols. (8)3. (i) Explain Ethernet protocol. (8)

    (ii) Explain MAC sub layer protocol and frame structure of IEEE 802.11. (8)4.Discuss in detail about standard ETHERNET

    5. Discuss in detail about Gigabit Ethernet

    6. (i) Explain any one of the protocols used for flow control in noisy channels. (8)(ii) Write short note on architecture and layers of Frame relay and ATM

    7. Explain in detail about connecting devices

    UNIT-III NETWORK LAYER

    PART-A (2 Marks)1. What is sub netting?

    2. What is the use of IP address?

    3. State the difference between classless and classful addressing

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    4. What is the difference between direct and indirect delivery.

    5. What is the purpose of RIP.6. What is the use of BGP.

    7. What is the use of routing table?

    8. Define Datagram.

    9. Define Internet works?10. What are the different type switching.

    11. What is use the of Router?

    12. What is the use of network layer?13. What is MTU?

    14. Define Fragmentation offset

    15. Write the difference between bridge routers.16. Find the error if any the following IP address.

    a. 111.56.045.78

    b. 75.45.301.14

    17. Where the routing table is maintained also state the purpose of maintaining a routing

    table.18. What is datagram socket?

    19. Write any four routing algorithm.20. What is an IP address?

    PART-B1. Find the class of each IP address given suitable explanation. (16)

    a. 227.12.14.87b. 193.14.56.22

    c. 14.23.120.8

    d. 252.5.15.111e. 134.11.78.56

    f. 000 000 00 1111 0000 11111111 00110011

    g. 10000000 1111 0000 11111111 00110011

    2. What is BOOTP and explain.3. State the major difference between Vector Routing and

    link state routing. (16)

    4. Discuss ARP and RARP5. What is the subnet work address if the destination address is

    200.45.34.56 and the subnet mask is 255.255.240.0. (16)

    6. What are the limitations of distance vector routing.7. Explain Uncast and Multicast protocols. (16)8. Explain the following DHCP,ICMP and IGMP

    UNIT-IV

    TRANSPORT LAYER

    PART-A (2 Marks)1. What is the maximum case of UDP datagram?

    2. What is the use of sequence numbers?

    3. What is the source post numbers?

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    4. What is client process?

    5. Name the policies that can precast congestion?6. How are congestions control and quality of source hexapod?

    7. What is the definition of burst data?

    8. What is traffic shaping? Name two methods of shape traffic?

    9. What determine the sender Window size in TCP10. How is Resource Reservation Protocol related to integrated services

    11. What is Traffic descriptor?

    12. What is Access rate?13. What are the methods to improve Quos?

    14. What is necessity of flow control?

    15. What is multicast? What is the difference between uncast and multicast?16. What are the two multiplexing strategies used in transport layer?

    17. Why transport layer extends host to delivery to process

    18. State why telnet uses network virtual terminal?

    19. What is the service provided by TCP?

    20. Difference between UDP and TCP. PART-B1. List and discuss the states used in TCP connection management finite state machine.i. Discuss how multiplexing and demultiplexing is done in

    the transport layer. (8)ii. Explain in detail the mechanism in transport layer

    for controlling congestion. (8)2. i) Explain choke packets methods of congestion control. (8)ii) Explain classless inter domain running(CINR). (8)

    3. i) Explain various problem and corresponding solution inestablishing a connection at transport layer. (8)ii) Explain the connection release process applied at

    transport layer. (4)

    iii) Explain window management in TCP. (4)4. i) Discuss about quality of services. (8)ii) Write short notes on integrated services. (8)

    UNIT-V APPLICATION LAYER

    PART-A ( 2 Marks)1. Define authentication and name any two authentication protocols.

    2. List any two types of DNS messages.3. What is FTP?

    4. State why telnet uses network virtual terminal ?

    5. How does the user gets E-mail from the message transfer agent?

    6. What is the importance of cookies?7. State the goals behind ISDN?

    8. What is telnet used for ? Discuss.

    9. Define security in networking.

    10. State Why telnet uses network virtual teriminal?11. What are the elements of WWW?

    12. What is the function provided by FTP?

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    13. Define SMTP?

    14. What is the use of DNS?15. Give example for hierarchy in DNS?

    16. Compare plain text and cipher text?

    17. What is symmetry key algorithm?

    18. What are all the services provided my E-mail?19. Define HTML?

    20. Define Fire walls?

    PART-B1. i) Explain in detail the File transfer protocol. (8)ii) Describe Cryptography. (8)

    2. i) Explain in detail a protocol for electronic mail. (8)ii) Explain in detail Multimedia security. (8)3. i) what is HTTP protocol used for? (6)ii) What is the default port number of HTTP protocol? (5)

    iii) Discuss the features of HTTP and also discuss how HTTP works. (5)

    4. Explain the importance of communication security. (16)5. Explain in detail the following

    i) Fault management. (8)ii) Security management. (8)

    6. Explain in detail Authentication protocols.

    By

    Gurunathan.M