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a) Reasons why the following types of memory are used
(i) Random access memory: (RAM)-is a volatile memory and holds-data as long as the
power is on hence used as a temporary storage when inputting data
(ii) Read only memory:-ROM refers to a storage that can only be read from but not
written to or altered hence used to store valuable information to safeguard against
overwriting or deletion.
b) Three local area Network (LAN) connecting devices
Modem: Converts data from digital form for the sending computer and also from analogue to
digital for the receiving computer
Gateway: Communication processor that connects different networks by providing transaction
from one set of protocol to another
Bridges: device that connects similar networks
c) Difference between ‘serial’ and ‘parallel5 processing
Serial processing is the processing that occurs sequentially, each process occurs one at a time
while parallel processing is the ability to carry out multiple operations or tasks simultaneously.
d) Benefits of secondary storage
- Secondary storage enables the data to be easily transported from one place to another
- Easily affordable and hence can be accessed by many people as compared to the main
memory which is very expensive
- They can be of high security when stored to secondary storage because it is not accessible
to all people
Kavungya answered the question on May 13, 2019 at 12:55
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Date posted: May 13, 2019. Answers (1)
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A friend has approached you for advice on the purchase of a new computer. He wishes to use the
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write his college work.
Required:
Advise the friend on:
a) The best specifications for the following hardware:
i. RAM.
ii. Processor.
iii. Secondary storage.
iv. Internet connection
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Date posted: May 13, 2019. Answers (1)
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iii. Optical...(Solved)
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Required:
Match the appropriate letter with the corresponding description of the computer above:
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ii. Main memory.
iii. Optical storage.
iv. Secondary storage.
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Date posted: May 13, 2019. Answers (1)
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Date posted: May 13, 2019. Answers (1)
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Date posted: May 13, 2019. Answers (1)
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Date posted: May 13, 2019. Answers (1)
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Required:
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Required:
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Information communication technology (ICT) can be categorized into two broad
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Required
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iii. Differentiate between "internal networks" and "external networks" as used in digital data
communication.
Date posted: May 13, 2019. Answers (1)