Unit 1 Assessment Test With Answers success Guaranteed
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 0 or a 1
D. A computer represents information as bits which contains 8 bytes. answerC. A computer represents
data s bits which is either a 0 or a 1
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 bit may represent different types of information
D. Common abstractions that are represented by computing devices include numbers, characters, and
color. answerB. Abstraction helps represent complex information by surfacing complexity that might
otherwise be hidden
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 difference 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 e 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 answerB. The photo is a digital representation of the analog painting
, 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 answerC. 16
I believe this is because you cannot represent the number sixteen with only four binary bits. The highest
you can go is 15.
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. answerB. With a fixed number of bits some numbers are too large to represent in a
computer which will lead to overflow errors.
Convert the binary (base-2) number 1001 to decimal (base-10)
A. 9
B. 10
C. 16
D. 17 answerA. 9
Refer to a flippy do, 1001 (1) = 2^3 (2*2*2) = 8, 0(null) 0(null) (1) = 2^0 (2*0) = 1
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 0 or a 1
D. A computer represents information as bits which contains 8 bytes. answerC. A computer represents
data s bits which is either a 0 or a 1
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 bit may represent different types of information
D. Common abstractions that are represented by computing devices include numbers, characters, and
color. answerB. Abstraction helps represent complex information by surfacing complexity that might
otherwise be hidden
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 difference 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 e 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 answerB. The photo is a digital representation of the analog painting
, 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 answerC. 16
I believe this is because you cannot represent the number sixteen with only four binary bits. The highest
you can go is 15.
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. answerB. With a fixed number of bits some numbers are too large to represent in a
computer which will lead to overflow errors.
Convert the binary (base-2) number 1001 to decimal (base-10)
A. 9
B. 10
C. 16
D. 17 answerA. 9
Refer to a flippy do, 1001 (1) = 2^3 (2*2*2) = 8, 0(null) 0(null) (1) = 2^0 (2*0) = 1
