Chap 3 Study Guide

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COMPUTER F

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Apr 3, 2024

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Audio data is often represented on a computer by sampling the continuous signal that represents a sound wave. True Ahead: Representing Audio Data Complexity: Moderate Subject: Chapter 3 Title: Data Representation Bandwidth is the term that describes the size of the wires connecting two computers in a network. False Ahead: Data and Computers Complexity: Easy Subject: Chapter 3 Title: Data Representation How many things can be represented using three bits? 8 Ahead: Data and Computers Complexity: Easy Subject: Chapter 3 Title: Data Representation How many things can be represented using two bits? 4 Ahead: Data and Computers Complexity: Easy Subject: Chapter 3 Title: Data Representation Huffman encoding uses variable length binary strings to represent particular characters. True Ahead: Representing Text Complexity: Easy Subject: Chapter 3 Title: Data Representation In a signed-magnitude representation of numbers, there are two representations of zero. True Ahead: Representing Numeric Data Complexity: Easy Subject: Chapter 3 Title: Data Representation In lossy data compression, the data can be retrieved without any loss of information. False Ahead: Data and Computers

Complexity: Easy Subject: Chapter 3 Title: Data Representation In which text compression technique is it invalid for a bit string that represents a character to be the prefix of any other string used to represent a character? Huffman encoding Ahead: Representing Text Complexity: Easy Subject: Chapter 3 Title: Data Representation Information is data that have been organized and/or processed in a useful way. True Ahead: Data and Computers Complexity: Easy Subject: Chapter 3 Title: Data Representation It is possible to represent four things with two bits. True Ahead: Data and Computers Complexity: Easy Subject: Chapter 3 Title: Data Representation Recording the voltage level of an audio signal at regular intervals is called what? Sampling Ahead: Representing Audio Data Complexity: Easy Subject: Chapter 3 Title: Data Representation Negative numbers cannot be represented using the fixed-sized number representation technique. False Ahead: Representing Numeric Data Complexity: Easy Subject: Chapter 3 Title: Data Representation Thicker monitors produce more vibrant colors because they have a higher color depth. False Ahead: Representing Images and Graphics Complexity: Easy Subject: Chapter 3 Title: Data Representation

Which of the following characters are not represented in the ASCII character set? Cyrillic characters Ahead: Representing Text Complexity: Moderate Subject: Chapter 3 Title: Data Representation Which of the following is a list of characters and the codes used to represent each one? Character set Ahead: Representing Text Complexity: Easy Subject: Chapter 3 Title: Data Representation Which of the following is data about data, such as the resolution of an image being stored with the image? Metadata Ahead: Representing Images and Graphics Complexity: Easy Subject: Chapter 3 Title: Data Representation Which of the following is not a raster-graphics format? Flash Ahead: Representing Images and Graphics Complexity: Moderate Subject: Chapter 3 Title: Data Representation Which technique for representing numeric data uses the mantissa to hold the significant digits of a value? Floating point Ahead: Representing Numeric Data Complexity: Easy Subject: Chapter 3 Title: Data Representation True or False? A character set is a list of characters and their numeric codes. True Ahead: Representing Text Complexity: Easy Subject: Chapter 3 Title: Data Representation True or False? The ASCII character set is an international set that represents most of the world's languages.

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False Ahead: Representing Text Complexity: Difficult Subject: Chapter 3 Title: Data Representation True or False? Electronic signals are easier to manage if they transfer only binary data. True Ahead: Data and Computers Complexity: Easy Subject: Chapter 3 Title: Data Representation True or False? Every additional bit used doubles the number of things that can be represented by a binary string. True Ahead: Data and Computers Complexity: Easy Subject: Chapter 3 Title: Data Representation True or False? Information is data that has been organized and/or processed in a useful way. True Ahead: Data and Computers Complexity: Easy Subject: Chapter 3 Title: Data Representation True or False? Run-length encoding replaces common words with shorter symbols. False Ahead: Representing Text Complexity: Moderate Subject: Chapter 3 Title: Data Representation Big endian machines use more memory to store data. True Computer networks use little endian encoding. False Personal computers use the little endian byte order to store multi-byte data. True The term “endian” refers to a computer architecture’s “byte order ”? True

What are two advantages of big endian storage method? easy to read by humans better performance processing bitmaps then little endian machines What are two advantages of little endian storage method? Word boundaries do not have to be observed High precision mathematics is easy When multi-byte data is stored most significant byte first at a lower memory address, what are these machines called? Big endian machines Which is the correct term for the way the computer stores the bytes of a multiple-byte data element? Byte-order Who determines which byte order method is used to store data in memory? manufacturer of the CPU Windows Bitmap file format is using the big endian encoding method. False Convert the following binary number to decimal. Which of the following result is the correct answer? 101011011 347 Convert the following binary number to decimal. Which of the following result is the correct answer? 1011 11 Convert the following binary number to octal number. Which of the following result is the correct answer? 01010111 127 Convert the following binary number to octal number. Which of the following result is the correct answer? 111111 77 Convert the following hexadecimal number to decimal. Which of the following result is the correct answer? 0x11 17

Convert the following hexadecimal number to decimal. Which of the following result is the correct answer? 0x13 19 Convert the following decimal number to binary format. Which of the following result is the correct answer? 13 1101 Convert the following decimal number to binary format. Which of the following result is the correct answer? 127 1111111 Convert the following decimal number to binary format. Which of the following result is the correct answer? 56 111000 Convert the decimal value 2.25 to a binary floating-point number and show it in a scientific notation form. 1.001*2^1 Convert the decimal value 3.0 to a binary floating-point number and show it in a scientific notation form. 1.1*2^1 Convert the decimal value 64.5 to a binary floating-point number and show it in a scientific notation form. 1.0000001*2^6 Convert the decimal value 14.625 to a binary floating-point number and show it in a scientific notation form. 1.110101*2^3 If a big endian storage method is used for storing the value of 0x1234 in a 16bit format, how would it look in memory? memory location 01 = 12 memory location 02 = 34 If a little endian storage method is used for storing the value of 0x1234 in a 16bit format, how would it look in memory? memory location 01 = 34 memory location 02 = 12 What is the result of the following calculation:

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16 What is the result of the following calculation: 3 What is the result of the following calculation: 8 Which number is the correct normalized form of the following floating-point binary number: 110101*2^0 1.10101*2^5 Which number is the correct normalized form of the following floating-point binary number: 1.10101*2^0 1.10101*2^0 Which number is the correct normalized form of the following floating-point binary number: 1110.101*2^0 1.110101*2^3 Which number is the correct normalized form of the following floating-point binary number: 0.00110101*2^0 1.10101*2^-3 What is the result of the following binary addition: 1111010 + 1111 10001001 What is the result of the following binary addition: 101010 +010101 111111

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