Computer Applications for Business
Exam 1 Graded A+
__________ refers to how close to white the pixels are - ANSWER-brightness
A digitization guideline which states that the sampling frequency should exceed the
signal frequency by at least a multiple of two is the
A) Leibniz rule
B) Sample rate rule
C) Analog-Digital rule
D) Nyquist rule - ANSWER-D) Nyquist Rule
A measure of how much information is transmitted per unit time is ________. -
ANSWER-bandwidth
A movie studio is planning to store digital copies of movies in their archives. It is
necessary for them to be able to access the full-quality videos when they are needed.
Which of the following actions is LEAST likely to support the studio's goal?
A) Using storage media that can be expanded for additional data capacity
B) Using a system that incorporates redundancy to handle disk failure
C) Using file formats that are supported across many different devices
D) Using lossy compression software to reduce the size requirements of the data being
stored - ANSWER-D) Using lossy compression software to reduce the size
requirements of the data being stored
A professional photographer's website displays thumbnails of the work the photographer
has for sale. Which of the following actions will allow the photographer to use the least
amount of storage for the thumbnails and still be able to sell the original high-quality
versions of her work?
A) Use lossless compression so that the compressed picture can be reconstructed to
the picture's original quality and resolution.
B) Use lossless compression to minimize the color loss of the original picture.
C) Use lossy compression to reduce the number of bits needed to store the image but
still maintain the ability to convert back to the original quality picture.
D) Use lossy compression to permanently reduce the physical size of the image
displayed. - ANSWER-A) Use lossless compression so that the compressed picture can
be reconstructed to the picture's original quality and resolution.
A simple form of data compression replaces each instance of a commonly appearing
pair of consecutive characters with a single character that does not appear in the
original data.
, For example, the string "THIS_IS_THE_BEST_THING_ABOUT_THE_FIRST_ISSUE"
can be encoded as "%#_#_%E_BEST_%ING_ABOUT_%E_FIRST_#SUE" by replacing
all instances of "TH" with "%" and replacing all instances of "IS" with "#".
Which of the following statements about this compression technique is true?
A) This type of compression is an example of a lossy transformation because it discards
some of the original data.
B) This type of compression is an example of a lossless transformation because it can
be used to transmit messages securely.
C) This type of compression is an example of a lossy transformation because some
pairs of characters are replaced by a single character.
D) This type of compression is an example of a lossless transformation because -
ANSWER-D) This type of compression is an example of a lossless transformation
because encoded data can be restored to its original state.
Adding a positive number to each component of each pixel in an image will
A) improve the contrast of the image
B) darken the image
C) turn the image black
D) Brighten the image - ANSWER-D) Brighten the image
Convert 10010101 from Binary to Decimal and Hexadecimal - ANSWER-Decimal: 149
Hexadecimal: 95
Convert 10110111 from Binary to Decimal and Hexadecimal - ANSWER-Decimal: 183
Hexadecimal: B7
Convert 51 from Decimal to Binary and Hexadecimal - ANSWER-Binary: 110011
Hexadecimal: 33
Convert 7B from Hexadecimal to Decimal and Binary - ANSWER-Decimal: 123
Binary: 1111011
Convert 83 from Decimal to Binary and Hexadecimal - ANSWER-Binary: 1010011
Hexadecimal: 53
Convert AD from Hexadecimal to Decimal and Binary - ANSWER-Decimal: 173
Binary: 10101101
Convert the binary number 10110011 to base 10: - ANSWER-179
CSS can be added to HTML documents in 3 ways. External: - ANSWER-use a <link>
element to link to an external CSS file
Exam 1 Graded A+
__________ refers to how close to white the pixels are - ANSWER-brightness
A digitization guideline which states that the sampling frequency should exceed the
signal frequency by at least a multiple of two is the
A) Leibniz rule
B) Sample rate rule
C) Analog-Digital rule
D) Nyquist rule - ANSWER-D) Nyquist Rule
A measure of how much information is transmitted per unit time is ________. -
ANSWER-bandwidth
A movie studio is planning to store digital copies of movies in their archives. It is
necessary for them to be able to access the full-quality videos when they are needed.
Which of the following actions is LEAST likely to support the studio's goal?
A) Using storage media that can be expanded for additional data capacity
B) Using a system that incorporates redundancy to handle disk failure
C) Using file formats that are supported across many different devices
D) Using lossy compression software to reduce the size requirements of the data being
stored - ANSWER-D) Using lossy compression software to reduce the size
requirements of the data being stored
A professional photographer's website displays thumbnails of the work the photographer
has for sale. Which of the following actions will allow the photographer to use the least
amount of storage for the thumbnails and still be able to sell the original high-quality
versions of her work?
A) Use lossless compression so that the compressed picture can be reconstructed to
the picture's original quality and resolution.
B) Use lossless compression to minimize the color loss of the original picture.
C) Use lossy compression to reduce the number of bits needed to store the image but
still maintain the ability to convert back to the original quality picture.
D) Use lossy compression to permanently reduce the physical size of the image
displayed. - ANSWER-A) Use lossless compression so that the compressed picture can
be reconstructed to the picture's original quality and resolution.
A simple form of data compression replaces each instance of a commonly appearing
pair of consecutive characters with a single character that does not appear in the
original data.
, For example, the string "THIS_IS_THE_BEST_THING_ABOUT_THE_FIRST_ISSUE"
can be encoded as "%#_#_%E_BEST_%ING_ABOUT_%E_FIRST_#SUE" by replacing
all instances of "TH" with "%" and replacing all instances of "IS" with "#".
Which of the following statements about this compression technique is true?
A) This type of compression is an example of a lossy transformation because it discards
some of the original data.
B) This type of compression is an example of a lossless transformation because it can
be used to transmit messages securely.
C) This type of compression is an example of a lossy transformation because some
pairs of characters are replaced by a single character.
D) This type of compression is an example of a lossless transformation because -
ANSWER-D) This type of compression is an example of a lossless transformation
because encoded data can be restored to its original state.
Adding a positive number to each component of each pixel in an image will
A) improve the contrast of the image
B) darken the image
C) turn the image black
D) Brighten the image - ANSWER-D) Brighten the image
Convert 10010101 from Binary to Decimal and Hexadecimal - ANSWER-Decimal: 149
Hexadecimal: 95
Convert 10110111 from Binary to Decimal and Hexadecimal - ANSWER-Decimal: 183
Hexadecimal: B7
Convert 51 from Decimal to Binary and Hexadecimal - ANSWER-Binary: 110011
Hexadecimal: 33
Convert 7B from Hexadecimal to Decimal and Binary - ANSWER-Decimal: 123
Binary: 1111011
Convert 83 from Decimal to Binary and Hexadecimal - ANSWER-Binary: 1010011
Hexadecimal: 53
Convert AD from Hexadecimal to Decimal and Binary - ANSWER-Decimal: 173
Binary: 10101101
Convert the binary number 10110011 to base 10: - ANSWER-179
CSS can be added to HTML documents in 3 ways. External: - ANSWER-use a <link>
element to link to an external CSS file
