Crittografia: codifica e XOR
Quiz
•
Computers
•
12th Grade
•
Practice Problem
•
Easy
Marco Buccione
Used 2+ times
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual è l'elemento base su cui lavorano i cifrari quando si utilizzano dei computer?
Frase
Parola
Bit
Carattere alfabetico
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale tabella di codifica è attualmente la più diffusa per trasformare i caratteri di un testo in codice binario?
ISO-8859-1
UTF-8
Unicode
ASCII
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale operatore logico si presta meglio ad essere usato in ambito crittografico?
XOR
NOT
OR
AND
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quando lo XOR dà in output il valore 1?
Se entrambi i bit in ingresso sono 1
Se i bit in ingresso sono uguali
Se entrambi i bit in ingresso sono 0
Se uno dei due bit in ingresso è 1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale principio di Shannon viene rispettato dall'operatore XOR?
Principio di diffusione
Principio di confusione
Principio di trasmissione
Principio di crittografia
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