Data Compression MCQ Questions And Answers

Data Compression MCQs : This section focuses on "Data Compression" in Data Structure. These Multiple Choice Questions (MCQ) should be practiced to improve the Data Structure skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. _______ is the process of encoding information using fewer bits than the original representation

A. Data loss
B. Data compression
C. Data transmit
D. Data gain

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2. How many types of compression there?

A. 4
B. 3
C. 2
D. 5

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3. Which compression loses data?

A. Lossy compression
B. Lossless compression
C. Both A and B
D. None of the above

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4. Which of the following is Lossless Data Compression Algorithms?

A. LZ77
B. LZR
C. DEFLATE
D. All of the above

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5. Lossy compression reduces bits by removing unnecessary or less important information

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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6. Which of the following is true about Lempel–Ziv–Welch (LZW) algorithm?

A. Optimized for compressing plain text
B. Used by GIF images and Unix's compress utility
C. Used by WinRAR in tandem with Huffman coding
D. used by ZIP, gzip, and PNG images

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7. Which of the following algorithms has very high compression ratio, used by 7zip and xz?

A. LZSS
B. LZO
C. LZMA
D. LZW

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8. Uncompressed video requires a ________ data rate.

A. high
B. low
C. medium
D. very high

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9. Which of the following is not a audio compression algorithms?

A. ALAC
B. DST
C. JSAC
D. OSQ

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10. Lossy image compression is used in digital cameras, to increase storage capacities

A. Yes
B. No
C. Can be yes or no
D. Can not say

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