10 questionsð¬ð§English
ð Codes & Ciphers
Crack the code! Secret messages, wartime codebreakers and ciphers that changed history.
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Questions
In Morse code, how is the distress signal SOS sent?
One dot, three dashes, one dot
Three dashes, three dots, three dashes
Three dots, three dashes, three dots
Two dots, two dashes, two dots
20s
In the NATO phonetic alphabet, which word stands for the letter Q?
Quiet
Queen
Quebec
Quito
20s
In flag semaphore, how is each letter signalled?
By long and short flashes of a lamp
By the positions of two hand-held flags
By waving one flag a set number of times
By raising coloured flags up a mast
20s
Using a Caesar cipher with a shift of 3 forward, what does the word CAT become?
ZXQ
FDV
FDW
DBU
30s
What is the binary number 1101 in ordinary decimal numbers?
14
15
13
11
30s
The Rosetta Stone carries the same text in hieroglyphs, Demotic and which other script?
Ancient Greek
Aramaic
Coptic
Latin
20s
Which electromechanical machine, designed by Alan Turing, helped Bletchley Park find daily Enigma settings?
The Lorenz machine
ENIAC
Colossus
The Bombe
30s
The famous coded sculpture Kryptos stands in the grounds of which organisation's headquarters?
The FBI
The NSA
The CIA
NASA
20s
Which spymaster's team decoded Mary, Queen of Scots' secret letters, leading to her execution in 1587?
Robert Dudley
Thomas Cromwell
Sir Francis Walsingham
Sir Walter Raleigh
30s
Which weakness of the Enigma machine did Allied codebreakers exploit?
No letter could ever be encrypted as itself
Only one key was used for the whole war
Each letter always became the same other letter
Its rotors never moved during a message
30s