
Esercizi di codifica
Authored by Emanuela Giaconi
Computers
11th Grade
Used 7+ times

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12 questions
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1.
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5 mins • 1 pt
Dati 6 bit per la codifica, quante informazioni distinte si possono rappresentare ? (indicare il solo numero)
2.
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5 mins • 1 pt
Dato un byte per la codifica, quante informazioni distinte si possono rappresentare ? (numero)
3.
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5 mins • 1 pt
Quanti bit si devono utilizzare per rappresentare 20 informazioni distinte ?
4.
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5 mins • 1 pt
Quanti byte occupa la frase ''cervello'' scritta in ASCII esteso ?
5.
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5 mins • 1 pt
Quanti byte occupa la frase ''dipartimento di psicologia'' scritta in ASCII esteso ?
6.
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5 mins • 1 pt
Quanti byte occupa un suono della durata di 5 secondi campionato a 30 Hz ( 30 campioni per secondo ), in cui ogni campione occupa 6 byte ? (indicare il numero in byte)
Answer explanation
5 x 30 x 6 = 900 byte
7.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
Un secondo di suono campionato a 512 Hz occupa 1 KB. Quanti valori distinti possono avere i campioni ? (indicare il numero)
Answer explanation
1 KB = 1024 byte; numero di campioni = 1 x 512 = 512; ogni campione contiene 1024 / 512 = 2 byte; 2 byte = 16 bit; 2^16 valori distinti
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