MCQ Mojo
access_time
menu
Quiz
Web Stories
CBSE
arrow_drop_down
MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
MCQ Questions for CBSE Class 3 with Answers
MCQ Questions for CBSE Class 2 with Answers
MCQ Questions for CBSE Class 1 with Answers
CBSE
arrow_drop_down
MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
MCQ Questions for CBSE Class 3 with Answers
MCQ Questions for CBSE Class 2 with Answers
MCQ Questions for CBSE Class 1 with Answers
Quiz
Quiz
/
Data compression Gate & PSU MCQ Questions With Answers
1.
___ Bits are needed for standard encoding if the size of the character set is X
X+1
log(X)
X2
2X
2.
In dictionary techniques for data compaction, which approach of building dictionary is used for the prior knowledge of probability of the frequently occurring patterns?
Adaptive dictionary
Static dictionary
Both
None of the above
3.
LZ77 and LZ78 are the two algorithms used for
Lossy data compression
Lossless data compression
Both
None of the above
4.
Full form of GIF
Graphics Interchange Form
Graphics Inter Format
Graphics Interchange Format
Graphics Interact Format
5.
An alphabet consist of the letters A, B, C and D. The probability of occurrence is P(A) = 0.4, P(B)= 0.1, P(C) = 0.2 and P(D) = 0.3. The Huffman code is
A = 0 B = 111 C = 110 D = 10
A = 0 B = 11 C = 10 D = 111
A = 0 B = 111 C = 11 D = 101
A = 01 B = 111 C = 110 D = 10
6.
Huffman coding is an encoding algorithm used for
lossless data compression
broadband systems
files greater than 1 Mbit
lossy data compression
7.
Which of the following is the first phase of JPEG?
DCT Transformation
Quantization
Data Compression
None of the above
8.
Adaptive dictionary –
holding strings previously found in the input stream
sometimes allowing the addition of strings but no deletions
allowing for additions and deletions of strings as new input symbols are being read
Both (A) and (B)
Both (A) and (C)
9.
Compression packages which use an LZ77-based algorithm followed by a variable-length coder.
PKZip
Zip
PNG
All of the above
10.
A Huffman code: A = 1, B = 000, C = 001, D = 01 , P(A) = 0.4, P(B) = 0.1, P(C) = 0.2, P(D) = 0.3 The average codeword length is
6
3.1
5.2
2.1
11.
Application of LZW
GIF
Zip
PNG
All of the above
12.
The idea with wavelets is to represent a complicated function by
simple basic functions
sinus functions
lines
square functions
13.
The redundancy is zero when
The probabilities are positive powers of two
The probabilities are negative powers of two
Both
None of the above
14.
A Huffman encoder takes a set of characters with fixed length and produces a set of characters of
random length
fixed length
variable length
constant length
15.
Information is the
data
meaningful data
raw data
Both A and B
16.
The basic idea behind Huffman coding is to
compress data by using fewer bits to encode fewer frequently occuring characters
compress data by using fewer bits to encode more frequently occuring characters
compress data by using more bits to encode more frequently occuring characters
expand data by using fewer bits to encode more frequently occuring characters
17.
LZ78 has ___ compression but very ____ decompression.
fast, slow
slow, fast
None of these
All of above
18.
Applications of Huffman Coding
Text compression
Audio compression
Lossless image compression
All of the above
Report Question
Previous
Next
warning
Submit
access_time
Time
Report Question
A bunch of text
Support mcqmojo.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page