chem

Internet protocol version 4 (IPv4) represents each IP address as a 32-bit binary number. Internet protocol version 6 (IPv6) represents each IP address as a 128-bit binary number. Which of the following best describes the result of using 128-bit addresses instead of 32-bit addresses?

2 to the 96 power times as many addresses are available.

Which of the following is an advantage of a lossless compression algorithm over a lossy compression algorithm?

A lossless compression algorithm can guarantee reconstruction of original data, while a lossy compression algorithm cannot.

Consider the following numeric values. Binary 1011Binary 1101Decimal 5 Decimal 12 Which of the following lists the values in order from least to greatest?

Decimal 5, binary 1011, decimal 12, binary 1101

Directions: The question or incomplete statement below is followed by four suggested answers or completions. Select the one that is best in each case.Byte pair encoding is a data encoding technique. The encoding algorithm looks for pairs of characters that appear in the string more than once and replaces each instance of that pair with a corresponding character that does not appear in the string. The algorithm saves a list containing the mapping of character pairs to their corresponding replacement characters.For example, the string can be encoded as by replacing all instances of with and replacing all instances of with .For which of the following strings is it NOT possible to use byte pair encoding to shorten the string's length?

"LEVEL_UP"

A color in a computing application is represented by an RGB triplet that describes the amount of red, green, and blue, respectively, used to create the desired color. A selection of colors and their corresponding RGB triplets are shown in the following table. Each value is represented in decimal (base 10). Color NameRGB Tripletindigo (75, 0, 130)ivory(255, 255, 240)light pink(255, 182, 193)​light yellow(255, 255, 224)magenta(255, 0, 255)neutral gray(127, 127, 112)pale yellow(255, 255, 160)vivid yellow(255, 255, 14)What is the binary RGB triplet for the color indigo?A(00100101, 00000000, 10000010)B(00100101, 00000000, 01000001)C(01001011, 00000000, 10000010)D(01001011, 00000000, 01000001)

(01001011, 00000000, 10000010)

A video-streaming Web site uses 32-bit integers to count the number of times each video has been played. In anticipation of some videos being played more times than can be represented with 32 bits, the Web site is planning to change to 64-bit integers for the counter. Which of the following best describes the result of using 64-bit integers instead of 32-bit integers?

2 times as many values can be represented.

An online store uses 6-bit binary sequences to identify each unique item for sale. The store plans to increase the number of items it sells and is considering using 7-bit binary sequences. Which of the following best describes the result of using 7-bit sequences instead of 6-bit sequences?

2 times as more items can be identified

Which of the following best explains how an analog audio signal is typically represented by a computer?

An analog audio signal is measured at regular intervals. Each measurement is stored as a sample, which is represented at the lowest level as a sequence of bits.

A color in a computing application is represented by an RGB triplet that describes the amount of red, green, and blue, respectively, used to create the desired color. A selection of colors and their corresponding RGB triplets are shown in the following table. Each value is represented in decimal (base 10).Color NameRGB Tripletindigo (75, 0, 130)ivory(255, 255, 240)light pink(255, 182, 193)​light yellow(255, 255, 224)magenta(255, 0, 255)neutral gray(127, 127, 112)pale yellow(255, 255, 160)vivid yellow(255, 255, 14)According to information in the table, what color is represented by the binary RGB triplet (11111111, 11111111, 11110000) ?A Ivory BLight yellowC Neutral grayDVivid yellow

Ivory

A program developed for a Web store represents customer account balances using a format that approximates real numbers. While testing the program, a software developer discovers that some values appear to be mathematically imprecise. Which of the following is the most likely cause of the imprecision?

The account balances are represented using a fixed number of bits, resulting in round-off errors.

The question or incomplete statement below is followed by four suggested answers or completions. Select the one that is best in each case. A computer program performs the operation and represents the result as the value . Which of the following best explains this result?

The precision of the result is limited due to the constraints of using a floating-point representation.

ASCII is a character-encoding scheme that uses a numeric value to represent each character. For example, the uppercase letter "G" is represented by the decimal (base 10) value 71. A partial list of characters and their corresponding ASCII values are shown in the table below.ASCII characters can also be represented by hexadecimal numbers. According to ASCII character encoding, which of the following letters is represented by the hexadecimal (base 16) number 56?AABLCVDY

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