Multimedia Technology
Multiple
Choice Questions and Answers:-
1. A video consists
of a sequence of
A.Frames.
B.Signals.
C.Packets.
D.Slots.
Ans.A
2. If frames are
displayed on screen fast enough, we get an impression of
A.Signals.
B.Motions.
C.Packets.
D.Bits.
Ans.B
3. H.323 uses G.71
or G.723.1 for
A.Compression.
B.Communication.
C.Controlling.
D.Conferencing.
Ans.A
4. To receive
signal, a translator is needed to decode signal and encode it again at a
A.High Quality.
B.Lower Quality.
C.Same Quality.
D.Bad Quality.
Ans.B
5. Session
Initiation Protocol (SIP), is very
A.Independent.
B.Flexible.
C.Important.
D.Layered.
Ans.B
6. Establishing a
session in Session Initiation Protocol (SIP), requires a three-way
A.Protocols.
B.System.
C.Ports.
D.Handshake.
AnsD
7. Moving Picture
Experts Group (MPEG) is used to compress
A.Frames.
B.Images.
C.Audio.
D.Video.
AnsD
8. A combination of
an encryption algorithm and a decryption algorithm is called a
A.plain text.
B.cipher.
C.original text.
D.shift cipher.
AnsB
9. Most common
compression technique that is used to create CD-quality audio is based on
perceptual encoding technique is called
A.Predictive
Encoding.
B.Perceptual
Encoding.
C.MPEG.
D.JPEG.
AnsB
10. In Audio and
Video Compression, each frame is divided into small grids, called picture
elements or
A.Frame.
B.Packets.
C.Pixels.
D.Mega Pixels.
Ans.C
11. Streaming stored
audio/video, files are compressed and stored on a
A.IP.
B.Server.
C.Domain.
D.Internet.
Ans.B
12. Live streaming
is still using Transmission Control Protocol ( TCP), and multiple unicasting
instead of
A.Unicasting.
B.Multicasting.
C.Layered Control.
D.Protocol Control.
Ans.B
13. Moving Picture
Experts Group (MPEG-2), was designed for high-quality DVD with a data rate of
A.3 to 6 Mbps.
B.4 to 6 Mbps.
C.5 to 6 Mbps.
D.6 to 6 Mbps.
Ans.A
14. Joint
Photographic Experts Group (JPEG) is used to compress
A.Music.
B.Pictures.
C.Images.
D.Frames.
Ans.C
15. Real-time
traffic needs support of
A.Unicasting.
B.Multicasting.
C.Layered Control.
D.Protocol Control.
Ans.B
16.We can divide
audio and video services into
A.1 broad
categories.
B.2 broad
categories.
C.3 broad
categories.
D.4 broad
categories.
Ans.C
17. In Video
Compression, an independent frame that is not related to any other frame is
called
A.B-Frame.
B.C-Frame.
C.I-Frame.
D.P-Frame.
Ans.C
18.. RTP uses a
temporary even-numbered
A.RTCP.
B.SMTP.
C.UDP port.
D.None.
Ans.C
19. HTTP client
accesses Web server by using the
A.SEND message.
B.GET message.
C.AUTO receive
message.
D.None.
Ans.B
20. In Joint
Photographic Experts Group (JPEG), a gray scale picture is divided into blocks
of
A.5 X 5 pixels.
B.6 X 6 pixels.
C.7 X 7 pixels.
D.8 X 8 pixels.
Ans.D
21. MP3 produces
three data rates from 96 Kbps to
A.128 Kbps.
B.164 Kbps.
C.256 Kbps.
D.320 Kbps.
Ans.B
22. For Music, we
need to compress digitize signals at
A.1.41 I-MHz.
B.1.42 I-MHz.
C.1.45 I-MHz.
D.1.48 I-MHz.
Ans.A
23. Sometimes
real-time traffic needs
A.Organization.
B.Traffic.
C.Channelizing.
D.Translation.
Ans.D
24. In Real-Time
Transport Protocol (RTP), source periodically sends a source description
message to give additional infonnation about
A.Others.
B.Itself.
C.Protocols.
D.Packets.
Ans.B
25. Audio
compression can be used for
A.Speech or Music.
B.Voice and Data.
C.Picture and
Colors.
D.Video and Voice.
Ans.A
26. In Real Time
Interactive Audio Video, conferencing requires two way communication between
A.receivers and
senders.
B.Packet to Frames.
C.Pixels to Packets.
D.Frames to Pixels.
Ans.A
27. In Real Time
Interactive Audio Video, Jitter is introduced in real-time data by delay
between
A.Frames.
B.Layers.
C.Pixels.
D.Packets.
Ans.D
28. Session
Initiation Protocol (SIP), has a mechanism that finds the
A.Domain.
B.Way.
C.IP Address.
D.Terminal.
Ans.C
29. In Audio and
Video Compression, voice is sampled at 8000 samples per second with
A.5 bits per sample.
B.6 bits per sample.
C.7 bits per sample.
D.8 bits per sample.
Ans.D
30. In Voice Over
IP, Term SIP stands for
A.Session Initiation
Protocol.
B.Session Initiation
Port.
C.Session Initiation
Path.
D.Session Initiation
Packet.
Ans.A
31. In Real-Time
Transport Protocol (RTP), A source sends a bye message to shut down a
A.System.
B.Frames.
C.IP.
D.Stream.
Ans.D
32. In Audio and
Video Compression, term RBG expresses
A.Red, Blue, Green.
B.Red, Black, Grey.
C.Rate, Bit, Giga
bit.
D.Red, Bluish,
Greyish.
Ans.A
33. To perform
tracking of an IP, Session Initiation Protocol (SIP), uses concept of
A.Registration.
B.Termination.
C.Streaming.
D.Translation.
Ans.A
34. A simple session
using Session Initiation Protocol (SIP), consists of three modules:
establishing, communicating, and
A.Transmission.
B.System.
C.Streaming.
D.Terminating.
Ans.D
35. Real-time
traffic needs support of
A.multicasting.
B.Translation.
C.integration.
D.security.
Ans.A
36. Session
Initiation Protocol (SIP), is designed to be independent of underlying
A.Linear Layer.
B.Lower Layer.
C.Transport Layer.
D.Protocol Layer.
Ans.C
37. In lowest
resolution a color frame is made of
A.1024 x 768 pixels.
B.800 X 600 pixels.
C.1152 X 864 Pixels.
D.1280 X 1080
pixels.
Ans.A
38. In Real Time
Interactive Audio Video, data are stored in buffer at a possibly variable
A.Pixels.
B.Packets.
C.Rates.
D.Bytes.
Ans.C
39. In Real Time
Interactive Audio Video, to prevent jitter, we can time-stamp packets and
separate arrival time from the
A.Frame Time.
B.Playback Time.
C.Pixels Time.
D.Packet Time.
Ans.B
40. Real-time
Transport Protocol (RTP) is protocol designed to handle real-time traffic on
the
A.Frames.
B.Internet.
C.IP.
D.Protocol.
Ans.B
41. In Session
Initiation Protocol (SIP), session can be terminated with a
A.OK Message.
B.Bye Message.
C.Terminate Message.
D.Quit Message.
Ans.B
42. In Session
Initiation Protocol (SIP), session can be terminated with a
A.OK Message.
B.Bye Message.
C.Terminate Message.
D.Quit Message.
Ans.B
43. RTCP stands for
A.Real-time
Transport Control Program.
B.Real-time
Transport Control Packet.
C.Real-time
Transport Control Protocol.
D.Real-time
Transport Control Path.
Ans.C
44. A compressed
audio/video file can be downloaded as a
A.Image.
B.Video.
C.Frame.
D.Text file.
Ans.D
45. When a caller
needs to communicate with callee, caller can use e-mail address instead of IP
address in the
A.OK Message.
B.Bye Message.
C.INVITE Message.
D.Great Message.
Ans.C
46. In Real Time
Interactive Audio Video, a sequence number on each packet is required for
A.real-time traffic.
B.real-time
Playback.
C.real-time pixels.
D.real-time frames.
Ans.A
47. Before audio or
video signals can be sent on Internet, they need to be
A.Channelized.
B.Managed.
C.Digitized.
D.Organized.
Ans.C
48. For speech, we
need to compress digitize signals at
A.128 Khz.
B.256 Khz.
C.64 Khz.
D.1152 Khz.
Ans.C
49. Moving Picture
Experts Group (MPEG-1), was designed for a
A.PC.
B.CD.
C.DVD.
D.Floppy.
Ans.B
50. Perceptual
encoding is based on science of
A.Frames.
B.Music.
C.Rhythm.
D.psychoacoustics.
Ans.D
51. Media player
uses URL in metafile to access media server to
A.download file.
B.Upload file.
C.Stored The File.
D.Stream file.
Ans.A
52. In Real Time
Interactive Audio Video, mixing means combining several streams of traffic into
A.1 Stream.
B.2 Stream.
C.3 Stream.
D.4 Stream.
Ans.A
53. According to
Nyquist theorem, if highest frequency of signal is f, we need to sample signal
A.19 Times/Sed.
B.20 Times/Sed.
C.21 Times/Sed.
D.22 Times/Sed.
Ans.C
54. In temporal
compression, redundant frames are
A.Channelized.
B.Organized.
C.Digitized.
D.Removed.
Ans.D
55. Primary Colors
for Color TV are
A.Blue, White,
Black.
B.Red, Green,
Yellow.
C.Red, Green, Black.
D.Red, Green, Blue.
Ans.D
56. Multilevel
Amplitude Shift Keying (MASK) is not implemented with pure Amplitude Shift
Keying (ASK), it is implemented with
A.QAM.
B.PSK.
C.FSK.
D.Binary ASK.
Ans.A
57. In a
constellation diagram, a signal element type is represented as a
A.Dot.
B.line.
C.x component.
D.y component.
Ans.A
58. Term that refers
to phase continues through boundary of two signal elements is
A.non coherent BFSK.
B.coherent BFSK.
C.Binary ASK.
D.Multilevel ASK.
Ans.B
59. Example of an
analog to analog conversion is
A.radio.
B.Video.
C.Television.
D.internet.
Ans.A
60. Total bandwidth
required for Amplitude Modulation (AM) is
A.2
B.2(1 + ? )B..
C.2L.
D.2F.
Ans.A
61. AM stations are
allowed carrier frequencies anywhere between
A.5-10KHz.
B.50-100KHz.
C.250-1000KHz.
D.530- 1700 kHz.
Ans.D
62. Analog-to-analog
conversion can be accomplished in
A.one way.
B.three ways.
C.two ways.
D.four ways.
Ans.B
63. Term that is
used to compose matrix of pixel is
A.Number.
B.Image.
C.Video.
D.Audio.
Ans.B
64. Parameter that
refers to recording and broadcasting of picture is
A.Text.
B.Audio.
C.Image.
D.Video.
Ans.D
65. Both station can
transmit and receive data simultaneously in
A.simplex mode.
B.Half duplex mode.
C.Full duplex mode.
D.None of Above.
Ans.C
66. Each set of bit
pattern is called
A.Code.
B.Unicode.
C.Coding.
D.ASCII.
Ans.A
67. Data
communications are transfer of data through some
A.transmission
medium.
B.linear medium.
C.Network LAN.
D.Protocols.
Ans.A
68. When system
delivers data accurately then it is called
A.Accuracy.
B.Delivery.
C.Jitter.
D.Timelessness.
Ans.B
69. Mode that is
like a two way street with traffic flowing in both direction simultaneously is
A.Simplex.
B.Full Duplex.
C.Half Duplex.
D.None of above.
Ans.B
70. Agreement
between communicating devices are called
A.Data.
B.Message.
C.Protocol.
D.Transmission
Medium.
Ans.C
71. Five components
that make up a data communications system are message, sender, receiver, and
A.protocol.
B.medium.
C.connecting device.
D.both a and b.
Ans.D
72. Two computers
connected by an Ethernet hub are of
A.LAN topology.
B.MAN topology.
C.WAN topology.
D.Intranet.
Ans.A
73. How many bits in
data unit has changed in single bit error
A.only 1.
B.two bits.
C.three bits.
D.four bits.
Ans.A
74. To guarantee
detection of up to s errors in all cases, minimum hamming distance in a block
code must be
A.s.
B.s+1.
C.s-1.
D.0.
Ans.B
75. Cyclic codes are
fast when these are implemented in
A.software.
B.hardware.
C.Local area
network.
D.Wide area network.
Ans.B
76. In block coding,
we divide our message into blocks, is called
A.code blocks.
B.packet blocks.
C.code words.
D.datawords.
Ans.D
77. Find parity bit
for 1001011
A.0.
B.1.
C.2.
D.None.
Ans.A
78. In a cyclic
code, decoder is failed to detect any error, when syndrome is
A.zero.
B.non zero.
C.infinity.
D.negative value.
Ans.A
79. What is maximum
effect of a 2-ms burst of noise on data transmitted for 12 kbps
A.2 bits.
B.4 bits.
C.16 bits.
D.24 bits.
Ans.D
80. Divisor line and
XOR are missing if corresponding bit in divisor is
A.0.
B.1.
C.10.
D.11.
Ans.A
81. Unsigned
representation of numbers by one's complement can represent
A.positive number.
B.negative number.
C.positive and negative
numbers.
D.infinite numbers.
Ans.C
82. Checksum is used
in Internet by several protocols although not at the
A.session layer.
B.transport layer.
C.network layer.
D.data link layer.
Ans.D
83. Switching in
Internets done by using datagram approach to packet switching at the
A.network layer.
B.application layer.
C.data link layer.
D.physical layer..
Ans.A
84. A
Circuit-Switched Network is made of a set of switches connected by physical
A.links.
B.media.
C.nodes.
D.frames.
Ans.A
85. Iog28 =
A.0.
B.1.
C.2.
D.3.
Ans.D
86. A switch in a
datagram network uses a
A.destination
address.
B.sender address.
C.routing table.
D.header.
Ans.C
87. Routing
processor searches routing table is called
A.switch fabric.
B.buffer.
C.table lookup.
D.rolling table.
Ans.C
88. A
Virtual-Circuit Network (VCN) is normally implemented in the
A.session layer.
B.data link layer.
C.network layer.
D.physical layer.
Ans.B
89. Which frame
completes entries in switching tables
A.acknowledgment
frame.
B.setup frame.
C.routing frame.
D.None.
Ans.A
90. Virtual-Circuit
Networks and datagram networks are sub categories of
A.message-switched
networks.
B.Packet-switched
networks.
C.Circuit-Switched
Networks.
D.None of them.
Ans.B
91. Actual
communication in a circuit-switched network requires
A.one phase.
B.two phases.
C.three phases.
D.four phases.
Ans.C
92. In a
packet-switched network, resources are allocated
A.randomly.
B.on demand.
C.reserved already.
D.both a and c.
Ans.B
93. In Circuit
Switching, resources need to be reserved during the
A.Data transfer
phase.
B.teardown phase..
C.setup phase.
D.propagation phase.
Ans.C
94. Circuit Switched
Networks are used in
A.cellular network.
B.satellite network.
C.Cable network.
D.telephone network.
Ans.D
95. Term that
performs physical and data link functions of packet switch is called
A.input port.
B.output port.
C.routing processor.
D.switching fabric.
Ans.A
96. Circuit-Switched
Networks are not as efficient as other two types of networks because resources
are unavailable to
A.other connections.
B.same connections.
C.other switches.
D.other networks.
Ans.A
97. Asynchronous
Transfer Mode (ATM) network is an example of
A.Packet switching
network.
B.Datagram Networks.
C.Virtual circuit
network.
D.message switched
network.
Ans.C
98. Three methods of
switching are
A.circuit switching,
packet switching, and protocol switching.
B.circuit switching,
packet switching, and message switching.
C.Loop switching,
packet switching, and message switching.
D.Node switching,
packet switching, and message switching.
Ans.B
99. A
circuit-switched network is made of switches connected by physical links, in
which each link is divided into
A.n channels.
B.n+1 channels.
C.2n channels.
D.n-1 channels.
Ans.A
100. A switched
network consists of a series of interlinked nodes is called
A.frames.
B.packets.
C.switches.
D.links.
Ans.C
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