Mind your Test
Which of the following best describes how computing devices represent information?
A. A computer will either represent information as bits or bytes but not both
B. A computer represents data as a byte which is either a 0 or a 1
C. A computer represents data as bits which is either a 0 or a 1
D. A computer represents information as bits which contain 8 bytes.
C. A computer represents data as bits which is either a 0 or a 1
Convert the binary (base-2) number 1001 to decimal (base-10).
A. 9
B. 10
C. 16
D. 17
A. 9
A way of representing information using only two options.
Binary:
A way of representing information using ten options.
Decimal:
What does, "NPC" mean?
A. Refers to Notable People of Color
B. Non-playable character, similar to a video game.
C. Means: Not Passing this Class
Which of the following is NOT true of how computers represent complex information?
A. Computing devices use patterns of bits to represent complex information
B. Abstraction helps represent complex information by surfacing complexity that might otherwise be hidden
C. Depending on context the same sequence of bits may represent different types of information
D. Common abstractions that are represented by computing devices include numbers, characters, and color.
B. Abstraction helps represent complex information by surfacing complexity that might otherwise be hidden
Convert the decimal (base-10) number 20 to binary (base-2).
A. 10010
B. 00101
C. 11000
D. 10100
D. 10100
A contraction of "Binary Digit"; the single unit of information in a computer, typically represented as a 0 or 1
Bit:
8 bits
Byte:
What does the word, "Main Character" mean?
A. When someone acts if the world revolves around them
B. The next up and coming viral rapper
C. Refers to the protagonist in a story
When visiting a museum Lian takes a photo of a painting with a smartphone which stores the photo as an image file. Which of the following best describes the differences between the painting itself and the photo of the painting stored on the smartphone?
A. Both the painting and the photo are analog
B. The photo is a digital representation of the analog painting
C. Sampling can be used to determine whether the analog image is an accurate representation of the painting
D. The phone can represent the photo in either digital or analog formats depending on the sampling technique that is used
B. The photo is a digital representation of the analog painting
Which of the following binary (base-2) numbers is LARGEST?
A. 11000000
B. 01111111
C. 00000001
D. 10111111
A. 11000000
Error from attempting to represent a number that is too large.
Overflow Error:
Error from attempting to represent a number that is too precise. The value is rounded.
Round-off Error:
What does the term, "Fan" mean?
A. A person is overtly interested, obsessed or paying to much attention to someone.
B. Someone who moves too much air when talking.
C. Referring to something that spins really fast.
Your computer uses 4 bits to represent decimal numbers (0, 1, 2, 3 and so on) in binary. What is the SMALLEST number for which an overflow error occur?
A. 14
B. 15
C. 16
D. 17
C. 16
How many total numbers can be represented with an 8-bit binary (base-2) system?
A. 127
B. 128
C. 255
D. 256
D. 256
Data with values that change continuously, or smoothly, over time. Some examples of analog data include music, colors of a painting, or position of a sprinter during a race.
Analog Data:
Data that changes discretely through a finite set of possible values
Digital Data:
What does the term, "slay" mean?
A. the employment skills of a butcher.
B. what those smelly reindeer pull
C. Someones outfit is killing
Which of the following is true of how computers represent numbers?
A. Using a fixed but large number of bits can eliminate the possibility of round off error when representing numbers in binary
B. With a fixed number of bits some numbers are too large to represent in a computer which will lead to overflow errors.
C. Using a fixed but large number of bits, for example 128, eliminates the possibility of overflow errors.
D. With a large but fixed number of bits it is possible to eliminate either round-off errors or overflow errors, but not both.
B. With a fixed number of bits some numbers are too large to represent in a computer which will lead to overflow errors.
Which of the following is true of lossy and lossless compression algorithms?
A. Lossy compression algorithms are used when perfect reconstruction of the original data is important.
B. Lossy compression algorithms are typically better than lossless compression algorithms at reducing the number of bits needed to represent a piece of data.
C. Lossless compression algorithms are only used to compress text data.
D. Lossless compression algorithms only allow for an approximate reconstruction of the original data.
B. Lossy compression algorithms are typically better than lossless compression algorithms at reducing the number of bits needed to represent a piece of data.
A process for creating a digital representation of analog data by measuring the analog data at regular intervals called samples.
Sampling:
A process for reducing the number of bits needed to represent something without losing any information. This process is reversible.
Lossless Compression:
What does the word, "cap" mean?
A. The thing students won't be wearing if they fail my class
B. The thing people take off of their pens to chew on
C. When someone isn't telling the truth