Test
2.1.4 Data Representation
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Preguntas del test (19)
1Modern computers work in binary because it is easy to represent two states in simple electronic circuits. Binary is
a...- Aa base 2 numbering system with 2 symbols.
- Ba base 6 numbering system with 6 symbols.
- Ca base 10 numbering system with 10 symbols.
- Da base 4 numbering system with 4 symbols.
2Each digit in binary is called a...
- Abyte
- Bnibble
- Cbit
- Dkilobyte
3A group of 8 binary bits is called a...
- Abyte
- Bbit
- Cnibble
4A group of 4 binary bits is called a...
- Abit
- Bbyte
- Cnibble
5How many kilobytes are in a megabyte?
- A1000
- B1028
- C1024
- D1026
6How many megabytes are in a gigabyte?
- A1024
- B1028
- C1026
- D1000
7If 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...
- Aan over error.
- Ban overflo error.
- Can overflow error.
- Dan underflow error.
8Hexadecimal numbers are...
- Abase 12
- Bbase 6
- Cbase 16
- Dbase 10
- Ebase 18
9All 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...
- Acharacter set.
- Bcharacter collection.
- Ccharacter group.
- Dcharacter assemble.
10ASCII uses...
- A7 bits so can provide 127 characters or symbols plus the null character (128 in total).
- B7 bits so can provide 127 characters or symbols.
- C7 bits so can provide 127 characters plus the null character (128 in total).
11Unicode uses 16 bits...
- Aproviding over 65,000 possibilities or 32 bits providing over 2 billion possibilities.
- Bproviding over 65,000 possibilities or 32 bits providing over 1 billion possibilities.
- Cproviding over 65,000 possibilities or 32 bits providing over 3 billion possibilities.
- Dproviding over 65,000 possibilities or 32 bits providing over 4 billion possibilities.
12A pixel is one dot in an image. The number of bits per pixel determines...
- Ahow many colours each dot can represent.
- Bhow many dots each dot can represent.
- Chow many shades each dot can represent.
- Dhow many pixels each dot can represent.
13The more bits per pixel the greater the...
- Apixel depth.
- Bcolour depth.
- Cdot depth.
14The resolution of an image is the...
- Anumber of dots per unit, e.g.the number of dots per inch (usually called dots per inch or 'dpi').
- Bnumber of pixels per unit, e.g.the number of pixels per inch (usually called dots per inch or 'dpi').
- Cnumber of pixels per unit, e.g.the number of dots per inch (usually called dots per inch or 'dpi').
15The sample rate of a sound is the...
- Anumber of times per minute that the sound wave is measured. The higher the sample rate the more accurately the wave is represented.
- Bnumber of times per second that the sound wave is measured. The lower the sample rate the more accurately the wave is represented.
- Cnumber of times per second that the sound wave is measured. The high the sample rate the more accurately the wave is represented.
16The sample interval of a sound is the...
- Awave gap between measurements of a sound wave being taken.
- Btime gap between measurements of a sound being taken.
- Ctime gap between measurements of a sound wave being taken.
17The sample resolution of a sound is the...
- Anumber of bits used to store the value of each wave. The higher the number of bits the more accurately the value is
stored. - Bnumber of waves used to store the value of each sample. The higher the number of bits the more accurately the
value is stored. - Cnumber of bits used to store the value of each sample. The higher the number of bits the more accurately the value
is stored.
- Anumber of bits used to store the value of each wave. The higher the number of bits the more accurately the value is
18An instruction set is the group of instructions available for that specific processor to use. The number of instructions available will depend on...
- Athe number of bits used.
- Bthe number of instructions used.
- Cthe speed of the processor.
19The 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...
- Aan operation e.g. 'ADD' or 'SUB' or 'DIV'
- Ba maths operator only e.g. 'ADD.'
- Cfurther instructions for the CPU.
Información
- Descripción
- Quiz for the A451 topic data representation
- Autor
- Lavington ICT
- Idioma
- English
- Visitas
- 819
- Etiquetas
- Valoración
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