Data Compression Multiple Choice Based Questions With Answer

Data Compression Multiple Choice Based Questions: Set-1

Check Also:

Data Compression Multiple Choice Based Question With Answers aktu. Regarding Any Errors related to the question or its solutions please comment in the given below, our team will check, and improve.

  • Data Compression MCQ Practice Set-1: Click Here
  • Data Compression MCQ Practice Set-2: Click Here
  • Data Compression MCQ Practice Set-3: Click Here
  • Data Compression MCQ Practice Set-4: Click Here
  • Data Compression MCQ Practice Set-5: Click Here

Data Compression Online MCQ Test

  1. Data compression means to the file size.
  • Increase
  • Decrease
  • Can’t say
  • None of the above
  1. Data compression and encryption both work on binary
  • False
  • True
  1. What is compression?
  • To compress something by pressing it very hardly
  • To minimize the time taken for a file to be downloaded
  • To reduce the size of data to save space
  • To convert one file to another
  1. Data compression usually works by          .
  • Deleting random bits of data
  • Finding repeating patterns
  1. Why data compressed?
  • A. To optimize the data
  • B. To reduce secondary storage space
  • C. To reduce packet congestion on networks
  • D. Both (B) and (C) 
  1. Which is a type of data compression?
  • Resolution
  • Zipping
  • Inputting
  • Caching 
  1. Data compression involves
  • Compression only
  • Reconstruction only
  • Both compression and reconstruction
  • None of the above 
  1. Based on the requirements of reconstruction, data compression schemes can be divided into  broad classes
  • 3
  • 4
  • 2
  1. compression is the method that eliminates the data which is not noticeable and  ____ compression does not eliminate the data which is not
  • Lossless, lossy
  • Lossy, lossless
  • None of these 
  1. Compression is generally used for applications that cannot tolerate any difference between the original and reconstructed data.
  • Lossy
  • Lossless
  • Both
  • None of these 
  1. What is compression ratio?
  • The ratio of the number of bits required to represent the data before compression to the number of bits required to represent the data after
  • The ratio of the number of bits required to represent the data after compression to the number of bits required to represent the data before
  • The ratio of the number of bits required to represent the data after reconstruction to the number of bits required to represent the data before
  • The ratio of the number of bits required to represent the data before reconstruction to the number of bits required to represent the data after
  1. Suppose storing an image made up of a square array of 256×256 pixels requires 65,536 bytes. The image is compressed and the compressed version requires 16,384 bytes. Then the compression ratio is             .
  • 1:4
  • 4:1
  • 1:2
  • 2:1
  1. Lossy techniques are generally used for the compression of data that originate as analog signals, such as
  • Speech
  • Video
  • Both
  • None of these 
  1. If fidelity or quality of reconstruction is____, then the difference between the reconstruction and the original is____ .
  • High, small
  • Small, small
  • High, high
  • None of the above
  1. The development of data compression algorithms for a variety of data can be divided into  
  • 2
  • 3
  • 4
  1. Which of the following is true of lossy and lossless compression techniques?
  • Lossless compression is only used in situations where lossy compression techniques can’t be used
  • Lossy compression is best suited for situations where some loss of detail is tolerable, especially if it will not be detectable by a human
  • Both lossy and lossless compression techniques will result in some information being lost from the original file
  • Neither lossy nor lossless compression can actually reduce the number of bits needed to represent a file
  1. Which of the following would not be suitable for Lossy Compression?
  • Speech
  • Video
  • Text
  • Image
  1. Which of the following are not in a compressed format?
  • MP3
  • Bitmap
  • MPEG
  • JPEG
  1. Information theory was given by
  • Claude von Regan
  • Claude Elwood Shannon
  • Claude Monet
  • Claude Debussy 
  1. The unit of information depends on the base of the log. If we use log base 2, the unit is_____; if we use log base e, the unit is____; and if we use log base 10, the unit is ____.
  • Hartleys, nats, bits
  • Hartleys, bits, nats
  • Bits, nats, hartleys
  • Bits, hartleys, nats
  1. According to Claude Elwood Shannon’s second theorem, it is not feasible to transmit information over the channel with error probability, although by using any coding technique?
  • Large
  • May be large or small
  • Unpredictable
  • Small 
  1. The essential condition/s for a good error control coding technique?
  • Better error-correcting capability
  • Maximum transfer of information in bits/sec
  • Faster coding & decoding methods
  • All of the above 
  1. The prefix code is also called as
  • Block code
  • Convolutional code
  • Parity code
  • Instantaneous code 
  1. Self information should be .
  • Negative
  • Positive
  • Both
  • None of these 
  1. A code in which no codeword is a prefix to another codeword is called as
  • Prefix code
  • Parity code
  • Convolutional code
  • Block code 
  1. The set of binary sequences is called a____, and the individual members of the set are called_____.       
  • Codewords, code
  • Code, codewords
  • None of these
  1. Full form of ASCII is
  • American Standard Code for Information Intercaste
  • American Standard Codewords for Information Interchange
  • American Standard Code for Information Interchange
  • American System Code for Information Interchange
  1. Composite source models is a combination or composition of several sources. In which how many source being active at any given time?
  • All
  • Only one
  • Only first three
  • None of these 
  1. For models used in lossless compression, we use a specific type of Markov process called a
  • Continuous-time Markov chain
  • Discrete-time Markov chain
  • Constant time Markov chain
  • None of the above 
  1. Markov model is often used when developing coding algorithms for
  • Speech
  • Image
  • Both
  • None of these 
  1. Which of the following compression type is supported by SQL Server 2014?
    • Row
    • Column
    • Both row and column
    • None of the mentioned 
  1. Point out the correct statement:
  • The details of data compression are subject to change without notice in service packs or subsequent releases
  • Compression is not available for system tables
  • If you specify a list of partitions or a partition that is out of range, an error will be generated
  • All of the mentioned
  1. In which type of Data Compression, the integrity of the data is preserved?
    • Lossy Compression
    • Lossless Compression
    • Both of the above
    • None of the above 
  1. Which of the following are Lossless methods?
    • Run-length
    • Huffman
    • Lempel Ziv
    • All of the above
  1. Which of the following are lossy methods?
    • JPEG
    • MPEG
    • MP3
    • All of the above 
  1. In how many parts we can divide audio and video services into broad categories?
    • Two
    • Three
    • Four
    • None of the above 
  1. The sequence of code assigned is called
    • codeword
    • word
    • byte
    • nibble

38. Huffman codes are codes and are optimum for a given model (set of probabilities).

  • Parity
  • Prefix
  • Convolutional code
  • Block code 

39. The Huffman procedure is based on observations regarding optimum prefix codes, which is

  •  In an optimum code, symbols that occur more frequently (have a higher probability of occurrence) will have shorter codewords than symbols that occur less
  • In an optimum code, the two symbol that occurs least frequently will have the same length
  • Both (A) and (B)
  • None of these

40. The best algorithms for solving Huffman codes

  • Brute force algorithm
  • Divide and conquer algorithm
  • Greedy algorithm
  • Exhaustive search 

Note: If you can find any error, please comment on the given below.

You may also like...

4 Responses

  1. daftar situs judi slot online says:

    My partner and I stumbled over here coming from a different
    website and thought I should check things out. I like what I
    see so now i am following you. Look forward to looking
    into your web page yet again.

  2. route says:

    Ⅴery soon this website will be famous amid all blog people,
    Ԁᥙe to it’ѕ good articleѕ or reviеws

  3. off ps4 games says:

    My brother suggested I might like this blog. He was totally right.

    This post truly made my day. You can not imagine just how
    much time I had spent for this info! Thanks!

  4. Joseph says:

    Nice answers in return of this query with firm arguments and describing
    all on the topic of that.

Leave a Reply

Your email address will not be published.

error: Content is protected !!