Numerical Datatypes and File Formats

Question 1

Range of int8 (approximate okay)

Answer 1

-2^7 to 2^7-1 (-128 to 127)

Question 2

Range of int16 (approximate okay)

Answer 2

-2^15 to 2^15-1 (-32,768 to 32767)

Question 3

Range of int32 (approximate okay)

Answer 3

-2^31 to 2^31-1 (approx +- 2.1 billion)

Question 4

Range of int64 (approximate okay)

Answer 4

-2^63 to 2^63-1 (approx +- 9 billion billion)

Question 5

Range of uint8 (approximate okay)

Answer 5

0 to 2^8-1 (0 to 255)

Question 6

Range of uint16 (approximate okay)

Answer 6

0 to 2^16-1 (0 to 65,535)

Question 7

Range of uint32 (approximate okay)

Answer 7

0 to 2^32-1 (0 to approx 4.3 billion)

Question 8

Range of uint64 (approximate okay)

Answer 8

0 to 2^64-1 (0 to approx 18 billion billion)

Question 9

Range of float16 (approximate okay)

Answer 9

sign bit, 5 bits exponent, 10 bits numbers

Question 10

Range of float32 (approximate okay)

Answer 10

sign bit, 8 bits exponent, 23 bits numbers

Question 11

Range of float64 (approximate okay)

Answer 11

sign bit, 11 bits exponent, 52 bits numbers

Question 12

Describe CSV

Answer 12

Tabular data
columns separated (usually) by commas
rows on separate lines

Question 13

Describe JSON

Answer 13

JavaScript Object Notation
More flexible than CSV, but less legible
Looks like Python code

Question 14

Describe XML

Answer 14

eXtensible Markup Language
Looks similar to HTML
Becoming less popular (yay!)