Chapter 2 - Part 1

Question 1

What is a bit?

Answer 1

A binary digit.

Question 2

Where was the base-10 system invented, who improved it and when, and who brought the base-10 system to the West and in what century?

Answer 2

Developed in India, improved by Arabs in the 12th century, brought to the west by Fibonacci (Leonardo Pisano) in the 13th century.

Question 3

What’s the name for the most common way to represent signed numbers in binary?

Answer 3

Two’s complement.

Question 4

What is a floating point number a representation of and in what?

Answer 4

Real numbers in base-2.

Question 5

Who designed the C programming language, and at what company?

Answer 5

Dennis Ritchie, Bell Labs

Question 6

What does the value of a pointer indicate?

Answer 6

The location of some object in memory.

Question 7

What does the type of a pointer indicate?

Answer 7

What kind of object is stored at the location (integer, floating point, etc.)

Question 8

How many bits in a byte?

Answer 8

8

Question 9

What is the range of a byte in binary, and then in decimal, and then in hex. How many unique values is that (in decimal)?

Answer 9

00000000 to 11111111, 0 to 255, 00 to FF

Question 10

In C, how do you represent a number in hex (2 ways).

Answer 10

0x or 0X, such as 0xFF

Question 11

Run the quiz hexbin program and input the score it gives you.

Answer 11

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