1.4.1: data types

• What data type should be used for storing a phone number like 07886756443

  string
• Perform an AND mask on the binary numbers:

  10101101

  01011011

  00001001
• Which data type stores a collection of characters?


  string
• Add the two binary numbers: 01011011 00111010 Give your answer in decimal

  149
• What is the decimal 45 in binary? Give your answer as a byte

  00101101
• What is the hexadecimal 2E in decimal?

  46
• What is the hexadecimal 45 in binary? Give your answer as a byte

  01000101
• Which data type stores just True and False?


  boolean
• What is -5 in sign magnitude binary? Give your answer as a nybble

  1101
• What does the binary 01101100 represent in hexadecimal?

  6C
• What is the effect of a logical shift left by one place?

  The value is doubled
• What is the two’s complement binary 10101101 in decimal?

  -83
• The binary 0011010000110 is a floating point number with a single-bit sign, 8-bit mantissa and 4-bit exponent. What is the number in decimal?

  52
• Perform a logical shift right by two places on the binary number 01101010 and convert your result to decimal

  26.5
• Perform an XOR mask on the binary numbers:

  01010101

  10111011


  11101110
• Which of the following is not a character? A: 8 B: R C: % D: 43

  D
• The binary 1100110000011 is a floating point number with a single-bit sign, 8-bit mantissa and 4-bit exponent. What is the number in decimal?

  -9.5