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15 Cards in this Set
- Front
- Back
Explain how a printer 'buffer' operates
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Print jobs are sent to the printers inbuilt RAM where they are stored until the printer is ready to print them
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What is meant by the term 'spooling'?
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Print jobs are stored in a queue on backing store until the printer is ready to receive them
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In 'floating point representation' what is the effect of having more bits for the 'mantissa'?
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Having more bits for the mantissa will improve the precision of the numbers represented
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A school is using a web server to allow pupils access to the Internet. Describe two functions of a web server
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A web server can provide virus protection, cache pages locally and filter out undesirable web pages
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State two advantages of a 'client server network' over a 'peer-to-peer'
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Updates to software on stations can be managed by the server. There is a central backup of all files
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Describe two methods of comparing the performance of two computers
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Mips- measuring how many Millions of Instructions are processed per second and Benchmarking- a set of tasks to measure performance
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What is cache and how does it improve system performance?
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Cache is fast access memory. It reduce the number of fetches to the slow RAM by holding commonly used instructions
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Explain how parallel transmission of data works
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Data is grouped in 7 bits and transmitted along wires at the same time
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In 'floating point representation' what is the effect of having more bits for the 'exponent'?
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Having more bit for the exponent will extend the range of the numbers represented
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Explain why increase the width of the data bus will improve system performance
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With a wider data bus more data can be fetched from memory in each fetch execute cycle
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Explain how a serial interface operates
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Data is sent one bit at a time along a single transmission line
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In 'bit-mapped graphics' what is meant by the term 'bit-depth'?
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The number of bits used to store each pixel and used to represent a range colours
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Explain the effect on file size of increasing the 'bit-depth' of a graphic?
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The file size would increase as more bits are used to store each pixel
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State one disadvantage of a 'client server network' over a 'peer-to-peer'
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If the server fails then the whole networked is down
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Explain the effect on file size of reducing the 'resolution' of a graphic?
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The file size would reduce as there are less pixels in any given area
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