Вы не авторизованы и не можете видеть весь контент сайта. Хотите авторизоваться?
Данный сайт использует куки. Это позволяет нам анализировать взаимодействие посетителей с сайтом и делать его лучше. Продолжая пользоваться сайтом, вы соглашаетесь с использованием файлов cookie.
Вы можете установить этой сайт в виде иконки на рабочем столе
и использовать его как нативное приложение.
Хотите установить это веб-приложение?
Computer Science GCSE: Components of a Computer System(2)
<% normalizedTimer %>
<pre>
What does RAM stand for?
</pre>
Вопрос № 1(Верно)(Неверно)
Ответы:
Random Access Memory
Random Active Memory
React Access Memory
React Active Memory
<pre>
What is the difference between volatile and non-volatile memory?
</pre>
Вопрос № 2(Верно)(Неверно)
Ответы:
Volatile memory requires power to retain data, wheras non-volatile memory does not.
Non-volatile memory requires power to retain data, wheras volatile memory does not.
<pre>
ROM is a type of non-volatile memory. What things are often stored in ROM?
</pre>
Вопрос № 3(Верно)(Неверно)
Ответы:
ROM often stores things like the IOS.
ROM often stores things like the BIOS and other firmware.
<pre>
TRUE or FALSE ?
Flash memory is a type of non-volatile memory that stores data in electrical circuits by trapping electrons.
</pre>
Вопрос № 4(Верно)(Неверно)
Ответы:
TRUE
FALSE
<pre>
TRUE or FALSE ?
Virtual memory is an area of secondary storage that is used as extra RAM.
This allows the computer to run memory-intensive programs when RAM is full,
but it can make the computer run more slowly,
as it is slower to read data from virtual memory than from RAM.
</pre>
Вопрос № 5(Верно)(Неверно)
Ответы:
TRUE
FALSE
<pre>
How does RAM compare to cache memory and a hard disk drive in terms of: read/write speed?
</pre>
Вопрос № 6(Верно)(Неверно)
Ответы:
The read/write speed of RAM is faster than cache memory but slower than a HDD.
The read/write speed of RAM is slower than cache memory but faster than a HDD.
<pre>
How does RAM compare to cache memory and a hard disk drive in terms of: price per GB?
</pre>
Вопрос № 7(Верно)(Неверно)
Ответы:
RAM is cheaper per GB than cache memory but more expensive than a HDD.
RAM is more expensive per GB than cache memory but cheaper than a HDD.
<pre>
Which of the following are types of secondary storage?
ROM Solid State Drive CD RAM Cache SD Card
</pre>
Вопрос № 8(Верно)(Неверно)
Ответы:
ROM, RAM, Cache
Solid State Drive, CD, RAM
Solid State Drive, CD, SD Card
RAM, Cache, SD Card
<pre>
Is secondary storage volatile or non- volatile memory?
</pre>
Вопрос № 9(Верно)(Неверно)
Ответы:
volatile
non- volatile
<pre>
Identify whether each of these types of storage are magnetic, optical or solid state:
USB Pen Drive, DVD, Hard Disk Drive
</pre>
Вопрос № 10(Верно)(Неверно)
Ответы:
USB Pen Drive - magnetic, DVD - optical, Hard Disk Drive - solid state
USB Pen Drive - solid state, DVD - magnetic, Hard Disk Drive - optical
USB Pen Drive - solid state, DVD - optical, Hard Disk Drive - magnetic
<pre>
TRUE or FALSE ?
The main purpose of secondary storage: to provide long term storage for application files and data.
</pre>
Вопрос № 11(Верно)(Неверно)
Ответы:
TRUE
FALSE
<pre>
When an application is in use, any data required is generally moved from secondary to primary storage.
Explain why this happens.
</pre>
Вопрос № 12(Верно)(Неверно)
Ответы:
Primary storage is less effective, but the CPU is more effective.
Primary storage is faster to access, so the CPU can perform the application's tasks quicker.
Primary storage is more expensive, and the CPU is cheaper.
<pre>
Give two uses of exernal secondary storage. In each case, suggest a reason why it is useful.
</pre>
Вопрос № 13(Верно)(Неверно)
Ответы:
Secondary storage is not massive but it is a standard.
Transferring data between unconnected devices, since it is portable.
Backing up large amount of data, as it tends to have a high storage capacity.
<pre>
Give three advantages of solid state drives over hard disk drives.
</pre>
Вопрос № 14(Верно)(Неверно)
Ответы:
SSDs have no moving parts so are more shock resistant.
HDDs become slower to read/write to due to fragmentation but SSDs do not.
SSDs are faster than HDDs.
SSDs are quieter and use more power.
<pre>
Here are some types of storage:
Hard Disk Optical Discs Magnetic Tape Solid State Drives
Put them in order of typical storage capacity from smallest to largest.
</pre>
Вопрос № 15(Верно)(Неверно)
Ответы:
Magnetic Tape, Optical Discs, Hard Disk, Solid State Drives
Optical Discs, Solid State Drives, Hard Disk, Magnetic Tape
Solid State Drives, Optical Discs, Hard Disk, Magnetic Tape
<pre>
Here are some types of storage:
Hard Disk Optical Discs Magnetic Tape Solid State Drives
Put them in order from cheapest per GB to most expensive per GB.
</pre>
Вопрос № 16(Верно)(Неверно)
Ответы:
Optical Discs, Solid State Drives, Hard Disk, Magnetic Tape
Solid State Drives, Optical Discs, Hard Disk, Magnetic Tape
Magnetic Tape, Optical Discs, Hard Disk, Solid State Drives
<pre>
TRUE or FALSE ?
Magnetic tape is not suitable for storing data that you need every day because magnetic tape
is read sequentially, so finding specific data takes a long time.
</pre>
Вопрос № 17(Верно)(Неверно)
Ответы:
TRUE
FALSE
<pre>
TRUE or FALSE ?
External HDDs are often used for backing up personal computers because HDDs
are portable so are useful for storage and transportation.
They also generally have higher capacities and are cheaper than external SSDs.
</pre>
Вопрос № 18(Верно)(Неверно)
Ответы:
TRUE
FALSE
<pre>
Check the reasons why solid state storage is often used in smartphones.
</pre>
Вопрос № 19(Верно)(Неверно)
Ответы:
Solid state storage is likely to survive the shock if a smartphone is dropped.
Solid state storage can easily fit in smartphones and has high capacity relative to its size.
Solid state storage has no moving parts so will be quiet when the smartphone is in use.
<pre>
A photographer is going to distribute some examples of her work to clients.
She wants to give each client one hundred 40 MB images.
What type of storage media do you think she should use?
</pre>
Choose the cheapest option.
Вопрос № 20(Верно)(Неверно)
Ответы:
DVDs
USB pen drives
Memory cards
<pre>
Fill the gap
The _ stores the results of calculations done by the ALU.
</pre>
Вопрос № 21(Верно)(Неверно)
Ответы:
program counter
accumulator
MAR
<pre>
Fill the gap
The _ holds any memory address about to be used by the CPU.
</pre>
Вопрос № 22(Верно)(Неверно)
Ответы:
program counter
MDR
MAR
<pre>
Fill the gap
The _ holds data or instructions that have been fetched from / are about to be written to memory.
</pre>
Вопрос № 23(Верно)(Неверно)
Ответы:
MDR
MAR
program counter
<pre>
TRUE or FALSE ?
Embedded system - a computer system built into another device.
</pre>
Вопрос № 24(Верно)(Неверно)
Ответы:
TRUE
FALSE
<pre>
Check examples of devices that may contain an embedded system.
</pre>
Вопрос № 25(Верно)(Неверно)
Ответы:
dishwasher
MP3 player
digital thermometer
washing machine
book
manufacturing machinery
mousepad
<pre>
A microwave contains an embedded system which controls its cooking modes.
Find any benefits of using an embedded system,
rather than a general purpose computer in microwave.
</pre>
Вопрос № 26(Верно)(Неверно)
Ответы:
Embedded systems are far smaller than general purpose computers which means microwave can be made more compact.
Embedded systems are cheaper to produce than general purpose computer which can reduce the costs / sale price of microwave.
Embedded systems tend to be more reliable than general purpose computer which means that microwaves are less likely to break.
<pre>
Find any functions of the Control Unit.
</pre>
Вопрос № 27(Верно)(Неверно)
Ответы:
The Control Unit executes instructions.
The Control Unit follows the fetch-decode-execute cycle.
The Control Unit controls the flow of data within the CPU.
The Control Unit controls the flow of data between the CPU and other parts of the computer system (memory, input and output devices).
<pre>
TRUE or FALSE ?
The ALU carries out arithmetic operations(addition, subtraction, multiplication),
performs logic operations on binary data (AND, NOT, OR).
</pre>
Вопрос № 28(Верно)(Неверно)
Ответы:
TRUE
FALSE
<pre>
Find any explanations how cache memory is used by the CPU.
</pre>
Вопрос № 29(Верно)(Неверно)
Ответы:
The cache is extremely fast memory in the CPU.
It stores regularly used data or instructions.
The CPU can access data stored in the cache much faster than retrieving it from RAM.
<pre>
TRUE or FALSE ?
RAM (or Random Access Memory) is used as the main memory in a computer.
It can be read and written to.
</pre>