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Number Systems and Data Representation, Exams of Advanced Education

Liberty University (LU)Advanced Education

Various topics related to number systems and data representation in computer science. It discusses the different types of numbers, such as natural numbers, integers, rational numbers, and binary storage units. The document also covers text compression techniques, transistor materials, logic gates, computer architecture components, and file systems. The information provided can be useful for students studying computer science, digital electronics, and related fields. A wide range of topics, from the fundamental concepts of number systems to more advanced topics in computer architecture and data storage. By studying this document, students can gain a comprehensive understanding of the underlying principles and techniques used in computer systems and data representation.

Typology: Exams

2024/2025

Available from 10/25/2024

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ITM 207 Computer-Enabled Problem Solving Final Exam Review
Toronto Metropolitan University
Which number represents the value of the base in every number system?
A. 0
B. 1
C.
10
D.
11
E.
100
Answer Key: C
1. What is the largest digit in the octal number system?
A.
1
B.
2
C.
7
D.
8
E.
9
Answer Key: C
2. Which of the following describes the number 0 and any number that can be obtained by repeatedly adding one to it?
A. number
B. natural number
C. integer
D. negative
number
E. rational
number
Answer Key: B
3. How many digits are there in the octal number system?
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe
pff
pf12
pf13
pf14
pf15
pf16
pf17
pf18
pf19
pf1a
pf1b
pf1c
pf1d
pf1e
pf1f
pf20
pf21
pf22
pf23
pf24
pf25
pf26
pf27
pf28
pf29
pf2a
pf2b
pf2c
pf2d
pf2e
pf2f
pf30
pf31
pf32
pf33
pf34
pf35
pf36
pf37
pf38
pf39

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Download Number Systems and Data Representation and more Exams Advanced Education in PDF only on Docsity!

ITM 207 Computer-Enabled Problem Solving Final Exam Review

Toronto Metropolitan University

Which number represents the value of the base in every number system? A. 0 B. 1 C. 10 D. 11 E. 100 Answer Key: C

  1. What is the largest digit in the octal number system? A. 1 B. 2 C. 7 D. 8 E. 9 Answer Key: C
  2. Which of the following describes the number 0 and any number that can be obtained by repeatedly adding one to it? A. number B. natural number C. integer D. negative number E. rational number Answer Key: B
  3. How many digits are there in the octal number system?

Answer Key: D

  • A.
  • B.
  • C.
  • D.
  • E.
  1. Which of the following is a value less than zero, with a sign opposite to its positive counterpart? A. number B. natural number C. integer D. negative number E. rational number Answer Key: D
  2. Which of the following can be used to express the value of every number in any number system? A. base B. quotient C. polynomial D. rational number E. radix Answer Key: C
  3. What is a single binary digit called? A. byte B. nibble C. bit D. word E. block Answer Key: C
  4. True or False? The base of a number system determines the number of digits used in the system. A. True B. FalseAnswer Key: True
  5. How many digits are there in the binary number system? A. 1 B. 2 C. 7

D.

  1. Which of the following describes a natural number, the negative of a natural number, or zero? A. number B. imaginary number C. integer D. negative number E. rational number
  2. In base 16, the digit E corresponds to what decimal value? A. 1

B.

C.

D.

E.

Answer Key: C Answer Key: D

  1. How many digits are there in the hexadecimal number system? A. 0 B. 9 C. 10 D. 15 E. 16 Answer Key: E
  2. What is the decimal value of the largest digit in the hexadecimal number system? A. 0 B. 9 C. 10 D. 15 E. 16 Answer Key: D
  3. What is the largest digit in the binary number system?

B.

C.

D.

E.

Answer Key: A

  1. True or False? Two hexadecimal digits can be stored in one byte. A. True B. FalseAnswer Key: True
  2. Which of the following is true about vector graphics? A. they represent real-world images very well B. they do not represent every pixel individually C. JPEG is a vector graphics format D. GIF is a vector graphics format E. they rely on spatial compression Answer Key: B
  3. Which text compression technique replaces a frequently used word with a single character? A. run-length encoding B. character set encoding C. keyword encoding D. Huffman encoding E. ASCII encoding Answer Key: C
  4. Which text compression technique replaces a long series of repeated characters with a count of the repetition? A. run-length encoding B. character set encoding C. keyword encoding D. Huffman encoding E. ASCII encoding Answer Key: A
  1. Which audio format is the most popular today? A. WA V B. AU C. AIFF D. VQF E. MP 3 Answer Key: E
  2. Which of the following is true about representing color as an RGB value? A. it mimics the way color is perceived by the human eye B. it cannot represent the color black C. it cannot represent the color white D. it cannot represent transparency E. it is composed of four separate numbers Answer Key: A
  3. True or False? A compact disk (CD) stores audio information as an analog signal. A. True B. FalseAnswer Key: False
  4. Which technique for representing numeric data has two forms of zero? A. signed-magnitude B. fixed-sized numbers C. floating point D. ten's complement E. scientific notation Answer Key: A
  5. Which technique for representing numeric data uses the mantissa to hold the significant digits of a value? A. signed-magnitude B. fixed-sized numbers C. floating point D. ten's complement

E. scientific notation Answer Key: C

  1. What causes numeric overflow? A. using fixed-sized numbers in a floating point calculation B. a calculation producing an invalid result C. a calculation producing a value that won't fit into the allotted space D. using a radix point instead of a decimal point E. using a radix point in a fixed-sized number calculation Answer Key: C
  2. True or False? Electronic signals are easier to manage if they transfer only binary data. A. True B. FalseAnswer Key: True
  3. How many things can be represented using two bits? A. 2 B. 4 C. 6

D.

E.

Answer Key: B

  1. True or False? Information is data that has been organized and/or processed in a useful way. A. True B. FalseAnswer Key: True
  2. Which text compression technique uses variable-length binary strings to represent characters, assigning frequently used characters short codes? A. run-length encoding B. character set encoding C. keyword encoding D. Huffman encoding E. ASCII encoding Answer Key: D
  3. Recording the voltage level of an audio signal at regular intervals is called what? A. sampling

B. peak analysis C. pulse-code modulation D. MP3 analysis E. CD simulation Answer Key: A

  1. Which of the following characters are not represented in the ASCII character set? A. uppercase letters (A-Z) B. lowercase letters (a-z) C. punctuation such as a period or comma D. Cyrillic characters E. non-printable characters such as ESC (escape) and DEL (delete) Answer Key: D
  2. True or False? Analog data is a continuous representation of the information it represents. A. True B. FalseAnswer Key: True
  3. True or False? Bandwidth is the term that describes the size of the wires connecting two computers in a network. A. True B. FalseAnswer Key: False

F. NOT

Answer Key: A

  1. Which gate produces a 0 if all its inputs are 1 and a 1 otherwise? A. AND B. NAND C. XOR D. OR E. NOR F. NOT Answer Key: B
  2. True or False? A circuit is a combination of gates designed to accomplish a more complex logical function. A. True B. FalseAnswer Key: True
  3. A transistor is made up of what kind of material? A. semiconductor B. conductor C. insulation D. rubber E. copper Answer Key: A

A. True

B. FalseAnswer Key: True

  1. Under what circumstances are two circuits considered equivalent? A. their input values are the same B. the output of one is the inverse of the output of the other C. their output values are the same for all possible input combinations D. their output values are always 1 E. the input of one matches the output of the other Answer Key: B
  2. Which of the following lists all possible input combinations for a gate, and the corresponding output? A. truth table B. Boolean expression C. logic diagram D. circuit E. S-R latch Answer Key: A