Comp Sci Retest 10/30

Which of the following is NOT an input device?

• printer
• mouse
• scanner
• microphone

Which of the following controls computer memory?

• applications
• compiler
• Python
• operating system

What is the correct order for the steps the compiler uses in translating code?

• 1. Run the commands
  2. Check for mistakes
  3. Translate commands to machine language
• 1. Check for mistakes
  2. Translate commands to machine language
  3. Run the commands
• 1. Run the commands
  2. Translate the commands to machine language
  3. Check for mistakes
• 1. Translate the commands to machine language
  2. Check for mistakes
  3. Run the commands

What is input?

• Converting code to machine language
• Storing data in main memory
• Displaying information on the screen
• Pulling information into the computer

The two basic categories of variable data types are:

• Words and letters
• Variables and input
• Strings and numbers
• Decimals and integers

What command is used to change a string into a number?

• str
• chr
• dec
• int

What is output by the following?
print ("Twinkle, \ttwinkle, \tlittle star")

• Twinkle, \ttwinkle, \tlittle star
• Twinkle,
  twinkle,
  little star
• Twinkle,     twinkle,     little star
• Twinkle, twinkle, little star

Consider the following code:
x = input ("What year is it?")
print x
The value stored in x is:

• a comment
• stored in secondary memory
• a String
• a number

Consider the following code:
print ("computer" + "science")
What is the output?

• Nothing, there is an error - you cannot add words
• computer science
• computer
  science
• computerscience

When do you use numbers instead of strings?

• To hold both words and integers
• To store data like phone numbers and street addresses
• When you need to do calculations
• To input large amounts of data