J277 - Ascii and Unicode Questions

Extended ASCII represents each character with 8 bits. How many bits are used to represent the phrase Hello World?

(a)  

Answer explanation

If your answer was 80, Remember that space is also a character!

Extended ASCII represents each character with 8 bits. How many bytes are used to represent the phrase Hello World?

(a)  

Answer explanation

Remember 8 bits = 1 byte

If your answer was 10, Remember that space is also a character!

UTF16 (a form of Unicode) represents each character with 16 bits. How many bytes are used to represent the phrase

I like turtles?

(a)  

Answer explanation

16 bits is 2 bytes

Remember to include spaces

UTF16 (a form of Unicode) represents each character with 16 bits. How many bits are used to represent the phrase

I like turtles?

(a)  

Answer explanation

Remember to include spaces

How many bits are used per character in the original ASCII system?

(a)  

Answer explanation

It was originally 7 - just for 128 characters

How many bits are used per character in the extended ASCII system?

(a)  

Answer explanation

8 bits allows for up to 256 characters

How many bits are used per character in UTF16 Unicode?

(a)  

How many bits are used per character in UTF32 Unicode?

(a)  

UTF16 uses 16 bits to represent each character. How many possible characters could 16 bits allow for?

(a)  

Answer explanation

You need to work out what the 17th binary place value is:

1,2,4,8,16,32,64,128,256,512,

1024,2048,4096,8192,16384,

32768,65536

Other than different languages, what can Unicode represent?

(a)