Question

How would you represent a single cyan-colored pixel in Base64 encoding? (Hint: first think about how to represent cyan as a three-byte binary number, and then do the Base64 encoding from the lecture.)

Answer 1

The answer is "AP//"

Step-by-step explanation:

In the given question choices were missing so, the correct choice can be defined as follows:

The 3-bit color description of 'CYAN' is 011 if we convert it into 3- byte binary representation, we get, the 3- byte binary representation that is equal to 011 = 00000000 11111111 11111111 and to split the 3-byte description into 6-bit subset to transform into Base64. so, we get: 000000 001111 111111 111111

if we have the Base64 alphabet table to convert the 6-bit representation towards its comparable letter or character by the 6-bit subgroup, that can be defined as follows:

• In 000000 the decimal value is = 0, which is equal to Base64 character is ='A' .
• In 001111 the decimal value is = 15, which is equal to Base64 character is= 'P'
• The 111111, its decimal value is = 63, in the Base64 its character is = '/'
• The 111111, its decimal value is = 63, in the Base64 its character is = '/'