WorksheetsYr 9 Unit 1 - Cracking the Code
Total questions: 20
Worksheet time: 11mins
The way binary codes are used to represent different types of data such as numbers and letters is known as?
Photographic manipulation
Binary coding
Data Representation
Data manipulation
The binary code 1111111 equals what in denary code?
0 - 200
0 - 255
256
65356
What is ASCII used for?
transferring 16 bit hexadecimal codes
transferring data electronically
Digitising music files for use by by users
Unlocking the BIOS
How many different characters could be represented using 7 bits?
100
87
120
128
Binary 1001011 equals the letter K on an ASCII keyboard
TRUE
FALSE
How many different characters can be represented on a standard keyboard?
Do you think a 7 bit code provides enough bits to represent all the characters in the English language?
YES
NO
NO IDEA
What other systems convert binary code into text?
EBCDIC
UNICODE
BAUDOT
IBM
What is this meme describing?
Getting rid of a pest on the mobile phone
A bug keeping a girl awake
debugging a program
Clearing a command line mistake
What is Groot trying to do?
(a)
How many bits does UNICODE use?
8
4
16
32
Which of the following is NOT a computer coding system?
ASCII
UNICODE
BINARY
Dress code
How many characters can UNICODE represent?
5120
2560
40000
65536
What is Encryption?
An algorithym between two places
A way of converting data into a secret code
A way of sending plaintext
A cypher to to debug a secret message
What is a Baudot code?
A 5 bit code invented in the 1870's
The code used by old typewriters
A 2 bit binary code
An alternative name for a Caesar cypher
What is a Cypher?
A young swan
A key to unlock a box
A flowchart showing how to make text secret
An algorithm to encrypt and decrypt data
Which of the following are cyphers?
A Caesar shift
The Alberti
A Scytale
The Enigma
This is an example of what type of cipher?
Enigma cipher
Pigpen cipher
Stream cipher
Atbash cipher
