Unit 2 - Information representation
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What is a Ring Cipher?
It is a way to encode and decode messages, by translating letters to numbers.
What is a binary table?
It is used to translate binary signs to numbers.
What is 10110101 in binary?
181
What is 11111110 in binary?
254
What is 01101100 in binary?
108
What is a Kilobyte?
1.000 bytes, abbreviation KB
What is a Megabyte?
1.000 kilobytes, abbreviation MB
What is a Gitabyte?
1.000 Megabytes. Abbreviation GB.
What is a Terabyte?
1.000 Gigabytes. Abbreviation TB.
What is a Petabyte?
1.000 Terabytes. Abbreviation PB
What is Octal?
It is a method to abbreviate binary. It is a base-8 system with values 0-7.
Name a Base-8 system
Octal. It has 8 characters.
How many binary digits can one Octal translate?
Three.
What is 111 binary in Octal?
7
What is 1010 binary in octal?
12
What is 1000 binary in Octal?
10
What is Hexadecimal?
It is a base-16 system, 16 possible symbols. It is the preferred method to use for translating binary to decimal. It’s written in groups of two
How many binary digits can one Hex represent?
Four
What is 1000 in hexadecimal?
08 (8)
What is 1100 in hexadecimal?
0C (12)
What is 1111 in Hexadecimal?
0F (15)
What is 10000 in Hexadecimal?
10 (16)
What is an alternative to Hexadecimal for decoding binary?
ASCII
How are digital contents of a file viewed?
With a Hex editor.