15EC741-Multimedia Communication Question Bank

15EC741-Multimedia Communication Question Bank

MODULE - 1

Multimedia communications: Introduction, multimedia information representation, multimedia networks, multimedia applications, media types, communication modes, network types, multipoint conferencing, network QoS application QoS.                                                                                           6 Hours

MODULE - 2

Multimedia information representation: Introduction, digital principles, text, images, audio, video.                                                                                                                                                                                                                                                                                                                                                   7 Hours

MODULE - 3

Text and image compression: Introduction, compression principles, text compression, image compression.        

Distributed multimedia systems: Introduction, main Features of a DMS,

Resource management of DMS, Networking, Multimedia operating systems

                                                                                                                                                                                    6 Hours

MODULE - 4

Audio and Video compression: Introduction, audio compression, DPCM, ADPCM, APC, LPC, video compression, video compression principles, H.261, H.263, MPEG, MPEG-1, MPEG-2, and MPEG-4.                                                                                                     7 Hours

                                                                                                 

MODULE - 5

Multimedia Communication Across Networks: Packet audio/video in the

network environment, Video transport across generic networks,

Multimedia Transport across ATM Networks

MODULE - 1

MULTIMEDIA COMMUNICATIONS: Introduction, multimedia information representation, multimedia networks, multimedia applications, media types, communication modes, network types, multipoint conferencing, network QoS application QoS.

1.	Determine the propogation delay associated with the following communication channels i) connection through private telephone network of 1km ii) a connection over a satellite channel of 50,000km.Assume that the velocity of propagation of a signal in the case of i)and ii) is (Jan 2018)	(10Marks)
2.	With neat diagrams explain the communication networks used to provide Multimedia communication services (Jan 2018)	(10Marks)
3.	With the help of diagram describe main components of PSTN. Show how high speed modem provides multiple services in addition to basic telephony.  (July 2017)	(10Marks)
4.	List the five basic types of communication networks that are used to provide multimedia services. Explain with neat diagram i)Broadcast television network ii) ISDN  (July 2017)	(10Marks)
5.	With neat diagrams, explain communication networks used to provide multi-media communication services.           (JULY 2016)	(8 Marks)
6.	List out the  different multimedia networks and explain telephone networks and broadcast television network Using Cable With Relevant Diagrams.       (Jan 2016, July 2014)	(10Marks)
7.	With neat diagram , explain multipoint conferencing modes of operations.   (Jan 2016)	(7 Marks)
8.	Explain any two  multimedia networks that provides single type of service.    (Jan 2017)	(8 Marks)
9.	What is multimedia? Explain its applications? (July 2015)	(8 Marks)
10.	With diagram explain different types of multimedia networks.                                                      (July 2015)	(12Marks)
11.	With a neat diagram, explain how voice mail and teleconferencing is supported in relation with speech only interpersonal communication involving both public (PSTN/ISDN) and private network : Also, explain the role of voice mail server and audio bridge. ( (Jan 2015)	(10Marks)
12.	With the aid of diagrams, explain the meaning of the following operational modes of a communication channel : i) simplex ii) duplex iii) broadcast iv) multicast v) asymmetric and symmetric. ( (Jan 2015)	(10Marks)
13.	i)                    List the five basic of communication network that are used to provide multimedia services. Explain with a neat diagram, i) Broadcast television network ii) Integrated service digital network.                    ( (Jan 2014)	(12Marks)
14.	Explain with neat diagram of multipoint conferencing modes and types of conferencing.  (Jan 2014)	(8 Marks)
15.	Define the term multimedia communication. State the basic form of representing different media types. (July 2011,Dec 2010)	(04 Marks)
16.	Explain the working principle of circuit mode and packet mode of operation of multimedia networks. List out salient features of each type of network. June (2012)

MODULE -2

MULTIMEDIA INFORMATION REPRESENTATION: Introduction, digital principles, text, images, audio, video.

1.	List and explain types of text used to produce pages of documents(Jan 2018)	(06Marks)
2.	Explain the principle of operation of PCM speech codec with a neat block diagram. (July 2017, June 2010)	(06Marks)
3.	With neat diagram, explain audio/sound synthesizer. July 2017 , Jan 2016	(06Marks)
4.	Write a note on 4:2:2 format? (July 2017)	(04Marks)
5.	With the aid of a diagram, explain colour image capture using camera and also RGB signal generation methods for the above. (Jan 2016)	(10Marks)
6.	Explain clearly different types of text data representation. June/July 2015	(08Marks)
7.	With schematic diagram, explain PCM signal encoding and decoding principles. (June/July 2015)	(12Marks)
8.	With the aid of diagrams, describe the following digitization formats,      i) 4 : 2 : 2 ii) QCIF. For each format, state the temporal resolution, bit rate and give an example application for each format. (Jan2015)	(09Marks)
9.	Describe the raster scan operation associated with TV/computer monitor. (Jan 2015)	(07Marks)
10.	Assuming the bandwidth of a speech signal is from 50 Hz through to 10 KHz and that of a music signal is from 15 Hz through to 20 KHz, derive the bit rate that is generated by the digitization procedure in each case assuming the Nyquist sampling rate is used with 12 bits per sample for the speech signal and 16 bits per sample for the music signal. Derive the memory required to store a 10 minute passage of stereophonic music. (Jan 2015)	(04Marks)
11.	With the aid of a diagram, explain how a color image is captured within a camera scanner using each of the following methods: i) Single image sensor. ii) A single image sensor with filters. iii) Three separate image sensors. Include in your explanations the term “photosities and ‘CCD’s and the role of the readout register. (July 2014)	(10Marks)
12.	Derive the bit rate and the memory requirements to store each frame that results from the digitization of both a 525 line and 625 line system, assuming a 4 : 2 : 0 format. Also find the total memory required to store a 2 hour movie / video. (July 2014)	(10Marks)
13.	Explai clearly different types of text data representation   (July 2015)	(08Marks)
14.	With schematic diagram,  explain PCM signal encoding and decoding principles. (July 2015)	(12Marks)
15.	Explain the following  i)Quantization intervals ii) Hyper text iii)Raster scan principles iv) Aspect ratio v)4:2:2 format (June 2011)	(10Marks)
16.	Describe 4:2:2 and 4:2:0 digitization formats. (Dec 2011)	(08Marks)

MODULE 3

Text and image compression: Introduction, compression principles, text compression, image compression.        Distributed multimedia systems: Introduction, main Features of a DMS, Resource management of DMS, Networking, Multimedia operating systems

1.	Discuss APDCM  sub band encoder and decoder (Jan 2018)	(12Marks)
2.	With a neat schematic discuss MPEG-4 decoder (Jan 2018)	(08Marks)
3.	With a neat block diagram explain the working of JPEG encoder. (,July 2017, Jan 2016,July 2013July 2011)	(10Marks)
4.	Encode the string "went." comprising characters with probabilities of e=0.3, n=0.3, t=0.2, w=0.1, . = 0.1 using arithmetic coding. (,June 2017, Jan 2016)	(10Marks)
5.	Explain clearly about image encoding and decoding methods with diagram. (July 2015)	(14Marks)
6.	Explain Huffman coding procedure for encoding any given data. July 2015	(06Marks)
7.	With a neat diagram, explain the JPEG encoder, in detail. (Jan. 2015)	(10Marks)
8.	With the aid of diagrams, define the following terms : i) Spatial frequency ii) Horizontal and vertical frequency components iii) Discrete cosine transform (DCT). (Jan. 2015)	(06Marks)
9.	Explain the following : i) Pure channel traffic ii) Congestion. (Jan. 2015)	(04Marks)
10.	Initially a dictionary containing only three characters with code as follows: Now if the input string is XYXYYXYZXYXYYX. Use LZW compression algorithm, find the output code. Also show that it is truly lossless algorithm by using LZW decoder. (July 2014)	(10Marks)
11.	Explain the following with neat diagram, i) Image / block preparation. ii) Forward DCT. (July 2014)	(10 Marks)
12.	Code the given string " A B A C A D A B A A C A D A B A C A B A B" Using Huffman coding. Derive Huffman code tree. (July 2013)	(06Marks)

MODULE 4

 Audio and Video compression: Introduction, audio compression, DPCM, ADPCM, APC, LPC, video compression, video compression principles, H.261, H.263, MPEG, MPEG-1, MPEG-2, and MPEG-4.                                                                                                    

1.	With the help of neat diagram explain LPC encoder and decoder .(JULY 2018,Dec 2010,July 2014)	(10 Marks)
2.	Give the meaning of motion estimation and compensation with respect to video compression. (Jan 2018) (July 2017)	(4 Marks)
3.	Explain ADPCM sub band encoder and decoder. (Jan 2016)	(10 Marks)
4.	Explain with Diagram H.263 error tracking. (Jan 2016)	(08 Marks)
5.	Explain H.261 encoding format. (July 2017,July 2014)	(08 Marks)
6.	What is the role of DCT and quantization in video compression? July 2015	(08 Marks)
7.	Explain perceptual coding technique with diagram. ( July 2015)	(08 Marks)
8.	Explain aspect ratio?( July 2015)	(04 Marks)
9.	With the help of a neat diagram, explain LPC encoder and decoder. (Jan. 2015)	08 Marks
10.	Explain the error tracking procedures of H.263, With neat diagram. (Jan. 2015)	07 Marks
11.	A digitized video is to be compressed using MPEG – 1 standard. Assuming a frame sequence of 1 BBPBBPBBPBBI . . . . . and average compression ratio of 10 : 1(I), 20 : 1(P) and 50 : 1(B), derive the average bit rate that is generated by the encoder for NISC  digitization format with y = 352.´ 240 and cb, cr = 176 ´ 120. Jan. 2015	(05 Marks)

MODULE 5

Multimedia Communication Across Networks: Packet audio/video in the network environment, Video transport across generic networks, Multimedia Transport across ATM Networks

1.	With the help of diagram explain broadband ATM cell formats. (July 2017, July 2017)	(10Marks)
2.	Explain LAN emulation in ATM. (July 2017July 2015, July 2013)	(10Marks)
3.	With relevant diagrams explain two types of routing in ATM network and also explain general structure of ATM switch. (Jan 2016)	(10Marks)
4.	Explain LAN emulation in ATM  and also unicast protocol architecture with relevant diagram.   (Jan 2016)	(10Marks)
5.	Explain classic IP over ATM (IPOA) LAN.    (June 2013))	(12 Marks)
6.	With the help of diagram, explain broadband ATM cell formats.  ( July 2015)	(10 Marks)
7.	Explain LAN emulation in ATM .      ( July 2015, June 2013)	(10 Marks)
8.	Explain ATM protocol architecture .   ( Jan. 2015, June 2013)	(10 Marks)
9.	Explain the communication access ATM network.( Jan. 2015)	(10 Marks)
10.	Explain ATM adaption layer 1 & 2 with neat format. (July 2014)	(10 Marks)
11.	Explain with a schematic diagram of ATM LAN. (July 2014)	(10 Marks)
12.	Explain the operation of token ring network with the help of a diagram. (July 2017,Jann 2015)	(10 Marks)
13.	Explain in detail the LAN protocols and protocol framework with diagram.(July 2017)	(10 Marks)
14.	With the aid of diagram , explain transparent bridge and give an example.(Jan 2016)	(10 Marks)
15.	Explain with diagrams FDDI networking components and interface. (Jan 2016)	10 Marks)
16.	Explain the operation of token ring network.( July 2015)	(10 Marks)
17.	Explain the LAN protocols.( July 2015)	(10 Marks)
18.	Explain in detail, with diagrams, the token frame transmission and reception with priority operation. (Jan. 2015)	(10 Marks)
19.	Explain spanning tree algorithm. (Jan. 2015)	(04 Marks)
20.	Explain CSMA/ CDMAC method used in IEEE 802.3 standardJan. 2015
21.	What is transparent bridge? With a neat diagram, explain transparent bridge architecture and its application example. July 2014	(10 Marks)
22.	Explain in detail token ring network frame formats and field description.( July 2014)	(10 Marks)