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Old June 5th, 2014, 10:32 AM
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Default DOEACC - C Level Multimedia Technology and Virtual Reality previous years question pa

Can you please give me the DOEACC - C Level Multimedia Technology and Virtual Reality previous years question papers as it is very urgent for me?
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Old June 5th, 2014, 03:24 PM
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Default Re: DOEACC - C Level Multimedia Technology and Virtual Reality previous years questio

As you want to get the National Entrance Examination for Design previous year question papers so here is the information of the same for you:

Some content of the file has been given here:

1.
a) What is Common Intermediate Format (CIF) and Quarter Common Intermediate Format
(QCIF)
b) Explain the concept of Non-Temporal and Temporal media?
c) Explain in brief the image morphing method and what are the technologies which can
facilitate morphing?
d) What is content based image retrieval? Explain the procedure.
e) “Resource Reservation Protocol may be useful in multimedia data transfer”. Comment.
f) Explain the concept of video over IP.
g) Give examples of QoS parameters in multimedia communication?
(7x4)
2.
a) Describe the steps involved in analog to digital conversion of audio signals.
b) Explain Event-based synchronization.
c) What is authoring? Explain different authoring paradigms.
(6+6+6)
3.
a) Explain the importance of data compression in multimedia. List various compression
techniques for different multimedia files.
b) How is the information lost in JPEG compression of images? Explain, how JPEG is
formed.
c) Describing the use of various types of frames used for video encoding in MPEG.
(6+6+6)
4.
a) Describe Video streaming technology? What are its advantages?
b) Describe the Augmented Reality Systems.
c) Explain the real-time processing requirements for multimedia information.
(6+6+6)
5.
a) What is VRML? Explain the concept of VRML Programming.
b) In what way are video conferencing standards different from audio conferencing
standards?
c) Explain how multimedia workstations are configured.
(6+6+6)
1. Answer question 1 and any FOUR from questions 2 to 7.
2. Parts of the same question should be answered together and in the same
sequence.
C11-R3 Page 2 of 2 July, 2010
6.
a) Explain why multicasting is relevant in multimedia applications. At what level of network
stack might you find multicast functionality and why?
b) Explain how design of video on demand system is done.
c) Briefly explain three general forms of Virtual Reality.
(6+6+6)
7.
a) Explain the working principle of interface to the virtual world.
b) How are multimedia databases organized? Give examples.
c) What are different planning and project management strategies in Multimedia Production?
(6+6+6)



1.
a) Describe significant differences between vector and bitmapped graphics.
b) Explain how Huffman Tree is developed and used in text compression?
c) What are the benefits and drawbacks of using 8-bit instead of 16-bit quantisation? Suggest an
application that would use 8-bit quantisation.
d) Videos are sometimes referred to as “moving pictures.” Explain this in terms of the perceptual
features exploited by video coding.
e) Briefly explain the concept of Aliasing.
f) Explain how MPEG-1 and MPEG-2 exploit masking frequencies to increase the audio
compression rates.
g) Briefly explain what is meant by the terms ‘visual realism’ and ‘latency’ when
describing a VR system. Also explain how these two terms are related.
(7x4)
2.
a) A digitized video is compressed using MPEG-1 with an IBBPBBPBBPBBI. . . frame sequence
and average compression ratios of 10:1, 20:1 and 50:1 for the I, P and B frames respectively.
What is the average compression ratio? Derive the average bitrate for the PAL (352x288, 25fps,
4:2:2) format, with and without compression.
b) Describe the Spatial Compression techniques for JPEG. In your answer you should
demonstrate an understanding of the Discrete Cosine Transform and the advantages that it has
for Spatial Picture Compression.
(9+9)
3.
a) Why does the MPEG-4 Simple Profile omit B-Frames?
b) What is RAID technology and what advantages does it offer as a medium for the storage and
delivery of large data? Briefly explain the eight levels of RAID functionality.
c) A digital video file is 40 Mb in size. The disk subsystem has four drives and the controller is
designed to support read and write onto each drive, concurrently. The digital video is stored
using the disk striping concept. A blocksize of 8 Kb is used for each I/O operation.
i) What is the performance improvement in sequentially reading the complete file when
compared to a single drive subsystem in terms of the number of operations performed?
ii) What is the percentage performance improvement for this system compared to a single
drive system?
(4+8+6)
1. Answer question 1 and any FOUR from questions 2 to 7.
2. Parts of the same question should be answered together and in the same
sequence.
C11-R3 Page 2 of 2 January, 2010
4.
a) Suppose an MPEG encoder uses the nine frame sequence IBBPBBPBB as a GOP. Draw a
diagram showing the dependencies between the first 18 frames of a compressed clip produced
by this encoder. Show how the pictures would be reordered into bitstream order. Explain briefly
why the pattern of I, P and B pictures in the bitstream order of the first nine frames is different
from that of the second nine frames. Explain why might it be beneficial to vary specification for a
Group of Pictures during a clip?
b) Define multicasting within the context of computer networks. Why is multicasting relevant to
multimedia applications? At what level of the network stack might you find multicast functionality
and why?
(9+9)
5.
a) What is the difference between end-to-end delay and packet jitter? What are the causes of
packet jitter? Outline ways in which a buffer may be used to eliminate jitter. Why might it be
desirable to use an adaptive play out delay? How might such a scheme work?
b) The Real Time Transport Protocol (RTP) is designed for use by time sensitive traffic.
i) What facilities does RTP provide?
ii) Why is it important that the rate at which RTCP generates packets is limited to a
proportion of the data rate?
(10+8)
6.
a) Describe two real-world applications of virtual reality technology, one which demands high
visual realism and one which demands low latency, explaining why in each case.
b) Describe the following interpolators: Position interpolator, Colour interpolators. What is the
difference between interpolator and script?
c) Briefly explain the differences between the following three forms of virtual reality: Immersive;
Window-on-world; and Augmented Reality.
(8+6+4)
7.
a) In multimedia there are a number of general guidelines to help assist designer to develop
effective presentations and applications. Such guidelines include:Thematic congruence;
Information loading; User compatibility; Viewpoints Consistency and Reinforcement.
Explain what is meant by each of the guideline, and in each case describe how the directive
assists in multimedia design, together with an example.
b) One of the main considerations with multimedia design is the possibility of multiple concurrent
media and the affect on user understanding. Describe what media types, when presented
concurrently, are readily comprehensible and which types are difficult for the user to manage.
(10+8)

For more detailed information I am uploading PDF files which are free download:


Contact Details:
National Institute of Electronics and Information Technology
Electronics Niketan,
6 CGO Complex,
Jawaharlal Nehru Stadium Marg,
CGO Complex,
Pragati Vihar,
New Delhi,
Delhi 110003 ‎
011 2436 3330
India

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