AQA GCSE Computing 8525 Data Representation Questions And Answers

AQA GCSE Computing 8525 Data
Representation Questions And Answers

Decimal b- bcorrect banswers✔✔Base b10 bnumber bsystems

Binary b- bcorrect banswers✔✔Base b2 bnumber bsystem

Hexadecimal b- bcorrect banswers✔✔Base b16 bnumber bsystem

Bit b- bcorrect banswers✔✔A bsingle bon/off btransistor bin ba bcomputer. bUnit bsymbol bis
bb. bWritten bas ba bsingle b1 bor b0.


Byte b- bcorrect banswers✔✔A bgroup bof b8 bbits. bUnit bsymbol bis bB.

Kilobyte b- bcorrect banswers✔✔1000 bBytes. bUnit bsymbol bis bkB.

Megabyte b- bcorrect banswers✔✔1000 bkiloBytes. bUnit bsymbol bis bmB.

Gigabyte b- bcorrect banswers✔✔1000 bmegaBytes. bUnit bsymbol bis bmB.

Terabyte b- bcorrect banswers✔✔1000 bgigaBytes. bUnit bsymbol bis btB.

Left bshift b- bcorrect banswers✔✔Multiplies bby ba bpower bof b2. bEach bplace ba bbit
bpattern bis bshifted bincreases bthe bpower bby bwhich bit bis bmultiplied. bEg bleft bshift bof
b2 bplaces bmultiplies bby b2^2, bor b4. bLeft bshift bof b4 bplaces bmultiplies bby b2^4, bor b16.


Right bshift b- bcorrect banswers✔✔Divides bby ba bpower bof b2. bEach bplace ba bbit
bpattern bis bshifted bincreases bthe bpower bby bwhich bit bis bmultiplied. bEg bright bshift bof
b2 bplaces bdivides bby b2^2, bor b4. bRight bshift bof b4 bplaces bdivides bby b2^4, bor b16.


Character bset b- bcorrect banswers✔✔A blist bof ball bthe bcharacters bthat beither bASCII
bor bUnicode bcan brepresent. bEach bcharacter bis bgiven ba bunique bbit bpattern.


ASCII b- bcorrect banswers✔✔Text brepresentation bthat buses b7 bbits bper bcharacter.
bCharacter bset bcan bstore b128 bcharacters.


Unicode b- bcorrect banswers✔✔Text brepresentation bthat buses bbetween b16 band b32
bbits bper bcharacter. bUses bthe bsame bcode bas bASCII bup bto b127 bUnicode b32