2694542
Beschreibung
Quiz von Lavington ICT, aktualisiert more than 1 year ago
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Erstellt von Lavington ICT
vor mehr als 9 Jahre
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Frage 1
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Modern computers work in binary because it is easy to represent two states in simple electronic circuits. Binary is
a...
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a base 2 numbering system with 2 symbols.
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a base 6 numbering system with 6 symbols.
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a base 10 numbering system with 10 symbols.
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a base 4 numbering system with 4 symbols.
Frage 2
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Each digit in binary is called a...
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byte
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nibble
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bit
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kilobyte
Frage 3
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A group of 8 binary bits is called a...
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byte
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bit
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nibble
Frage 4
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A group of 4 binary bits is called a...
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bit
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byte
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nibble
Frage 5
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How many kilobytes are in a megabyte?
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1000
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1028
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1024
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1026
Frage 6
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How many megabytes are in a gigabyte?
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1024
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1028
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1026
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1000
Frage 7
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If a computer has only 8 bits to store a value then the last bit of a 9 bit number will be lost. This is called...
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an over error.
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an overflo error.
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an overflow error.
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an underflow error.
Frage 8
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Hexadecimal numbers are...
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base 12
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base 6
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base 16
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base 10
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base 18
Frage 9
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All symbols displayed in a computer are represented by a code. The computer looks up the symbol matching the code from a list of codes and their associated characters. The list of codes and characters is called the...
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character set.
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character collection.
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character group.
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character assemble.
Frage 10
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ASCII uses...
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7 bits so can provide 127 characters or symbols plus the null character (128 in total).
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7 bits so can provide 127 characters or symbols.
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7 bits so can provide 127 characters plus the null character (128 in total).
Frage 11
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Unicode uses 16 bits...
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providing over 65,000 possibilities or 32 bits providing over 2 billion possibilities.
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providing over 65,000 possibilities or 32 bits providing over 1 billion possibilities.
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providing over 65,000 possibilities or 32 bits providing over 3 billion possibilities.
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providing over 65,000 possibilities or 32 bits providing over 4 billion possibilities.
Frage 12
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A pixel is one dot in an image. The number of bits per pixel determines...
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how many colours each dot can represent.
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how many dots each dot can represent.
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how many shades each dot can represent.
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how many pixels each dot can represent.
Frage 13
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The more bits per pixel the greater the...
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pixel depth.
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colour depth.
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dot depth.
Frage 14
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The resolution of an image is the...
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number of dots per unit, e.g.the number of dots per inch (usually called dots per inch or 'dpi').
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number of pixels per unit, e.g.the number of pixels per inch (usually called dots per inch or 'dpi').
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number of pixels per unit, e.g.the number of dots per inch (usually called dots per inch or 'dpi').
Frage 15
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The sample rate of a sound is the...
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number of times per minute that the sound wave is measured. The higher the sample rate the more accurately the wave is represented.
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number of times per second that the sound wave is measured. The lower the sample rate the more accurately the wave is represented.
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number of times per second that the sound wave is measured. The high the sample rate the more accurately the wave is represented.
Frage 16
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The sample interval of a sound is the...
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wave gap between measurements of a sound wave being taken.
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time gap between measurements of a sound being taken.
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time gap between measurements of a sound wave being taken.
Frage 17
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The sample resolution of a sound is the...
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number of bits used to store the value of each wave. The higher the number of bits the more accurately the value is stored.
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number of waves used to store the value of each sample. The higher the number of bits the more accurately the value is stored.
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number of bits used to store the value of each sample. The higher the number of bits the more accurately the value is stored.
Frage 18
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An instruction set is the group of instructions available for that specific processor to use. The number of instructions available will depend on...
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the number of bits used.
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the number of instructions used.
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the speed of the processor.
Frage 19
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The CPU fetches instructions and decodes them in order to find out what to do next. The instructions are in two parts: the OPERATOR and the OPERAND. The OPERATOR or OPCODE represents...
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an operation e.g. 'ADD' or 'SUB' or 'DIV'
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a maths operator only e.g. 'ADD.'
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further instructions for the CPU.
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