CS 1400 exam 1

59 flashcards · Computer Science · by Elsa Schutfort

1. How many bits does one byte have?

   8

2. Computer memory (RAM) is volatile

   true

3. What does CPU stand for and what is its function?

   Central processing unit , most important piece, processes the data in the computer.

4. What is an Assembly Language?

   Uses an assembler to convert to machine code. uses a short instruction that can be translated into machine language, and easier than writing in machine language

5. Complier

   creates a new file to run a code

6. Three major tasks of an Operating System

   Controlling and monitoring system activities, scheduling operations, allocating and managing system resources

7. CPU (Match speed to each component)

   Fastest

8. Memory (Match speed to each component)

   Fast

9. Storage (Match speed to each component)

   Slow

10. What language does a CPU understand?

    machine language

11. Do coding rules need to be followed in order for a program to execute properly on a computer system?

    Yes

12. Do coding conventions need to be followed in order for a program to execute properly on a computer system?

    No

13. What type of error prevents a program from running at all?

    Syntax Error

14. What causes a run-time error?

    Happens when python can't understand what you're saying

15. What causes a logic error?

    caused by a mistake in the program's logic

16. What units is used to measure CPU?

    GHz

17. What language does a CPU understand?

    machine language

18. What is the end parameter?

    end""

19. val = input()

    allows val to be assigned a string that is received from a user

20. val = float(input())

    converts users input into a float

21. str(a)

    converts values into string form

22. Step of Software Development Process that is concerned with user's perspective

    Requirements Specification

23. value //= 2

    changes the value when printing

24. Proper name for a constant value according to standard naming conventions

    MAX_VAL

25. Multiple Assignment

    Making more than one assignment to the same variable during the execution of a program (val1 = val2 = 5)

26. Scope

    the term that defines the rules where a variable/identifier can used (the rule that a variable must be declared/created before it is used is part of this)

27. modules in python

    they exist inside of libraries and hold extra function (ex. turtle, math, time)

28. escape sequence to insert a newline in a string

    \n

29. What is 10 in 10.2f

    width

30. What is 2 in 10.2f

    the precision

31. What is f in 10.2f

    float can be a s for string

32. =+ 10.2f

    adds plug then puts the padding

33. < 10.2f

    left aligns the results

34. > 10.2f

    right aligns the result

35. ^10.2f

    center aligns the results

36. volatile

    data disappears when power is removed

37. Interpreted High-Level language

    Python is an example of an

38. type(a)

    returns the type of data (ex. string, float, int)

39. -=

    subtracts and assigns

40. Step of the Software Development Process that is from the developers perspective

    System Design

41. importing just factorial

    from math import factorial

42. math.pow(a, b)

    a^b

43. What is a string literal?

    any text in between a set of quotes

44. id(a)

    returns the identity of the object

45. How do you put quotes in a print statement?

    \"[insert]\"

46. +=

    add and assigns

47. **

    exponentiation (3 ** 2 = 9)

48. %

    modulus or remainder operator (5 % 2 =1)

49. Concatenation

    linking into chains

50. banking rounding

    round to the nearest even whole number

51. round(val, number)

    needs to be given a number to round with

52. Scope issues

    runtime errors if the variable is given after it's used

53. print("Hello" + "Goodbye")

    HelloGoodbye

54. print("insert" + val1 + val2)

    Run-time error because val1 and val2 aren't strings

55. //

    integer division (1/2 = 0)

56. /

    floating point division

57. +

    binary addition and unary positive

58. -

    binary addition and unary negative

59. *

    binary multiple