QUESTIONS AND CORRECT ANSWERS
ALREADY PASSED
◉ What is true about the process of converting analog data into digital
data? Answer: Regardless of the sampling interval used, the digital
version can never contain as much detail as the original analog data.
◉ Byte pair encoding is a compression algorithm that replaces repeated
pairs of characters in a string with a character that isn't in the data, and
creates a table of replacement mappings.
Here's a quote from Dr. Seuss:
"Think left and think right and think low and think high. Oh, the thinks
you can think up if only you try!"
Which of the following character pairs would the algorithm replace?
Answer: th &in
◉ You decide to design a clock that shows all the numbers in binary.
What's the least number of bits that you'll need to represent the current
minute (0-59) in binary? Answer: 6
, ◉ How many values can a binary digit store? Answer: A binary digit
can store one of two values (0 or 1).
◉ Nora is learning to use image editing applications and doesn't
understand when to lower the quality setting for JPEG saving.
What's a good use case for using a lower quality setting? Answer:
Saving a thumbnail that will link to a full-sized version
◉ Consider this sequence of bits:
010101010011001101001011 000001011000000100111100
011001011000001010010111 010111110001000111100111
010110110010011010111000
What is true about this binary data? Answer: This sequence of bits
might represent a number, an English word, or a Chinese word.
◉ A startup is developing a new web browser with a focus on
accessibility for visually impaired users.
The startup founder is considering the benefits and drawbacks of
releasing the code online under an open source license.
What would be a consequence of releasing the code with an open source
license? Answer: Other companies and individuals would be able to
view and use the code according to the conditions of the open source
license.