Question

SUBJECT: CYBER ESSENTIALS

Convert between binary and hexadecimal values

Question 7: Convert binary number to a hexadecimal number

Binary number: 00001100

Hexadecimal value: ??

Question 8: Convert binary number to a hexadecimal number

Binary number: 01001111

Hexadecimal value: ??

Question 9: Convert binary number to a hexadecimal number

Binary number: 10101101

Hexadecimal value: ??

Question 10: Convert hexadecimal number to an 8 bit binary number

Hexadecimal number: AB

8 bit binary number:

Question 11: Convert hexadecimal number to an 8 bit binary number

Hexadecimal number: D2

8 bit binary number: ??????????

Question 12: Convert hexadecimal number to an 8 bit binary number

Hexadecimal number: 01

8 bit binary number: ??????????

Part 3: ASCII Code (10 points)

Question 13: What character is the hexadecimal ASCII code 23?

Question 14: What character is the hexadecimal ASCII code 4A?

Question 15: What character is the hexadecimal ASCII code 6A?

Part 4: Converting numbers to binary (20 points)

Question 16: For each scenario determine if the numbers should be stored as ASCII codes or binary equivalents. Then find the ASCII code or calculate the binary equivalent.

Scenario	ASCII code	Binary equivalent
The course number: 107
The year: 2001
The number of printers in inventory: 62
The weight of a suitcase when it is checked in at the airport: 24

Question 17: Explain your reason for each of the choices in the previous question.

Scenario	Binary equivalent
The course number: 107
The year: 2001
The number of printers in inventory: 62
The weight of a suitcase when it is checked in at the airport: 24

Answer 1

Hexadecimal     Binary
    0           0000
    1           0001
    2           0010
    3           0011
    4           0100
    5           0101
    6           0110
    7           0111
    8           1000
    9           1001
    A           1010
    B           1011
    C           1100
    D           1101
    E           1110
    F           1111
Use this table to convert from binary to hexadecimal
7)
Converting 00001100 to hexadecimal
0000 => 0
1100 => C
So, in hexadecimal 00001100 is 0x0C

8)
Converting 01001111 to hexadecimal
0100 => 4
1111 => F
So, in hexadecimal 01001111 is 0x4F

9)
Converting 10101101 to hexadecimal
1010 => A
1101 => D
So, in hexadecimal 10101101 is 0xAD

10)
Converting AB to binary
A => 1010
B => 1011
So, in binary AB is 10101011

11)
Converting D2 to binary
D => 1101
2 => 0010
So, in binary D2 is 11010010

12)
Converting 01 to binary
0 => 0000
1 => 0001
So, in binary 01 is 00000001