Classic Quiz
The Compact Disc : Functions, Features & History Quiz
Published on 29 Feb 2020 | Last Updated 09 Mar 20201. The sampling rate, the reduction of a continuous-time signal to a discrete-time signal for a Compact Disk is
A. 48.4 kHz
B. 22,050 Hz
C. 22,050 Hz
D. 48 kHz
2. How many minutes of music can a compact disk with general specifications hold?
A. 74 mins
B. 56 mins
C. 60 mins
D. 90 mins
3. How does a compact disk hold the written data?
A. Using Magnetic Strips
B. Using lasers to engrave pits in the surface
C. Solid State Chip
D. Using cloud services
4. Where was the first Compact Disc introduced?
A. South Korea
B. Europe
C. Japan
D. United States
5. The inventor who invented the first system to record digital information on an optical transparent foil lit from behind by a halogen lamp was
A. Thomas Edison
B. James T. Russell
C. Johannes Gutenberg
D. Thomas Young
6. A book that specifies the physical parameters and properties of the CD developed by Philips is
A. Red Book
B. Blue Book
C. Green Book
D. CD Book
7. A data encoding technique used by compact discs (CD), which offers a some resilience to defects such as scratches and fingerprints is
A. Eight-to-fourteen modulation (EFM)
B. Cross-interleaved Reed–Solomon coding(CIRC)
C. MPEG
D. AVI
8. What is the size of an average widely used Compact Discs?
A. 2 Inches
B. 4.7 Inches
C. 7 Inches
D. 9 Inches
9. When did CD-RW (Compact Disk Re-writeable) became commercially available?
A. 1997
B. 1990
C. 2001
D. 2005
10. MPG' extension refers usually to what kind of file?
A. WordPerfect Document file
B. MS Office document
C. Animation/movie file
D. Image file
11. A thin layer of metal coating that is applied to the surface of a CD which makes it reflective is
A. Aluminium
B. Copper
C. Iron
D. Phosphorus
12. What is the distance between the tracks in a CD?
A. 4um
B. 1.6 um
C. 1 nano meter
D. 10 mm
13. What is value of program area (area onto which data is stored) in a CD?
A. 86.05 cm2
B. 100 cm2
C. 70 cm2
D. 120 cm2
14. What is the length of the recordable spiral track in a Compact Disk
A. 1 km
B. 4 km
C. 1.5 km
D. 5.38 km
15. What is the wavelength of the light emitted by the laser used to read the data from a CD surface?
A. 700 nm
B. 600 nm
C. 780nm
D. 300 nm
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