1. Digital playback is better than analog because a. It\'s a natural format b. T
ID: 3816533 • Letter: 1
Question
1. Digital playback is better than analog because
a. It's a natural format
b. There are less errors in amplitude
c. You have more samples
d. Even with noise, 0's and 1's are difficult to determine
e. No answer is correct
2. The non-patented version of the GIF format is?
a. MP3
b. PBG
c. No answer is correct
d. JPG
e. AAC
3. MP3 is _____________ compression strategy.
a. Lossless
b. Two or more answers are correct
c. discard some data
d. Lossy
e. 2x
4. The world as perceived by human senses is
a. Analog
b. No answer is correct.
c. Digital
d. measured by frequency
e. both analog and digital
5. How much space does 400 X 350 image take to store?
a. No answer is correct
b. 140 KB
c. 17.5 KB
d. 420 KB
e. 360 KB
6. The way an analog signal is brought into a computer is called?
a. No answer is correct
b. conversion
c. distribution by height over time
d. sampling
e. digitization
7. Frequency can be described as?
a. Width of wave divided by the height
b. Amplitude over time
c. Timbre per second
d. No answer is correct
e. How often a wave repeats per second
8.Noise cancelling headphones work by
a. limiting the peaks and valleys of ambient sound
b. No answer is correct
c. synchronizing the peaks between to sound valleys
d. outputting a constant frequency that drowns out other sounds
e. detect and create exactly opposite sounds
9. This proprietary format will likely be displaced with HTML5
a. No answer is correct
b. MP4
c. h.264
d. JPG
e. Flash
10.The errors introduced by analog systems is called?
a. No answer is correct
b. hiss
c. random wiggles
d. variations
e. Noise
Explanation / Answer
1. Digital playback is better than analog because
a. It's a natural format
b. There are less errors in amplitude
c. You have more samples
d. Even with noise, 0's and 1's are difficult to determine
e. No answer is correct
Answer: b. Since in digital format there are only 0’s and 1’s, even if noise is superimposed, differentiating the bits would be difficult.
2. The non-patented version of the GIF format is?
a. MP3
b. PBG
c. No answer is correct
d. JPG
e. AAC
Answer: c. PNG (Portable Network Graphics) is the non-patented version of GIF.
3. MP3 is _____________ compression strategy.
a. Lossless
b. Two or more answers are correct
c. discard some data
d. Lossy
e. 2x
Answer: d. MP3 is uses a form of lossy data compression, which are data encoding methods that use inexact approximations and partial data discarding to reduce file sizes significantly, typically by a factor of 10
4. The world as perceived by human senses is
a. Analog
b. No answer is correct.
c. Digital
d. measured by frequency
e. both analog and digital
Answer: a. Human senses observe and perceive environment continuously.
5. How much space does 400 X 350 image take to store?
a. No answer is correct
b. 140 KB
c. 17.5 KB
d. 420 KB
e. 360 KB
Answer: d. Assuming the image to be color, 3 * 400 * 350 = 420000 = 420 kB
6. The way an analog signal is brought into a computer is called?
a. No answer is correct
b. conversion
c. distribution by height over time
d. sampling
e. digitization
Answer: d. Sampling is conversion of analog data into digital data.
7. Frequency can be described as?
a. Width of wave divided by the height
b. Amplitude over time
c. Timbre per second
d. No answer is correct
e. How often a wave repeats per second
Answer: e. Frequency is the rate at which something occurs over a particular period of time.
8.Noise cancelling headphones work by
a. limiting the peaks and valleys of ambient sound
b. No answer is correct
c. synchronizing the peaks between to sound valleys
d. outputting a constant frequency that drowns out other sounds
e. detect and create exactly opposite sounds
Answer: e. Noise cancelling headphones create their own sound waves that mimic the incoming noise in every respect except one: the headphone's sound waves are 180 degrees out of phase with the intruding waves resulting in destructive interference.
9. This proprietary format will likely be displaced with HTML5
a. No answer is correct
b. MP4
c. h.264
d. JPG
e. Flash
Answer: e. HTML5 incorporates features like video playback and drag-and-drop that have been previously dependent on third-party browser plug-ins such as Adobe Flash, Microsoft Silverlight, and Google Gears.
10.The errors introduced by analog systems is called?
a. No answer is correct
b. hiss
c. random wiggles
d. variations
e. Noise
Answer: e. Any variation that occurs in the data due to system is noise.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.