Cache memory
This refers to a high-speed memory that a processor can access more quickly than
RAM. Frequently used instructions are stored in cache since they can be retrieved more quickly improving the overall performance of the computer. Level 1 (L1) cache is located on the processor; Level 2 (L2) is located between the processor and RAM. Cache memory is very expensive and thus the size of this memory in the computer relative to the primary and secondary memory is very small.
b) Coprocessor
This refers to an additional processor that is used to perform specialized activities within the system. The coprocessor within a system is able to ensure that the coprocessor is more efficient in undertaking certain activities. An example of a coprocessor is a math coprocessor. The math coprocessor helps the main processor to perform mathematical computations.
c) Device driver
This refers to a program that allows a specific device such as a modem, network adapter, or printer, to communicate with the operating system. Device drivers are specific to the make and model of the device. They are supplied in compact disks or diskettes together with the devices they represent when the devices are sold to the customer.
d) Disk caching
This refers to a technique that is used to improve the access time (time that is takes to access data) for a hard disk. Disk caching utilizes a disk cache which may be part of the hard disk or a specified portion of Random Access Memory (RAM). The disk cache holds data that has been recently read and, in some cases, adjacent areas that are likely to be accessed next.
e) Expansion board
This refers to an electronic circuit that enables a user to add to the features of a computer system. In order to add a feature to a computer system, the required electronic board is plugged into the motherboard (main electronic circuit board in the computer system) by making use of expansion slots (sockets within the motherboard). Expansion boards may be used to increase computer memory and also, to improve the visual capability of a system, to add an audio capability to the system, to increase disk space of the system, etc.
Gregorymasila1 answered the question on March 28, 2018 at 14:34
- (a) Information is a vital resource and most organizations are investing heavily in its management. It is therefore critical to protect data and information from...(Solved)
(a) Information is a vital resource and most organizations are investing heavily in its management. It is therefore critical to protect data and information from accidental or deliberate unauthorized modification or destruction. The information system itself must be protected from unauthorized interference so that it continues to meet its objective of continuing to provide information to various users. Required: (i.) Make two recommendations on physical security measures your organization‟s information system (2 marks) (ii.) Explain how “Backup” and “Uninterruptible Power Supply” are security measures. (2 marks)
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(i.) What is a computer virus?
(ii.) Name two anti-virus tools.
(iii.) Suggest two administrative measures that your organization should take to check the threats of computer viruses.
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Date posted: March 28, 2018. Answers (1)
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a) List five types of systems
b) Explain the following characteristics of a system:
(i.) Differentiation;
(ii.) Equifinality;
(iii.) Feedback;
(iv.) Transformation;
(v.) Entropy;
(Solved)
a) List five types of systems
b) Explain the following characteristics of a system:
(i.) Differentiation;
(ii.) Equifinality;
(iii.) Feedback;
(iv.) Transformation;
(v.) Entropy;
Date posted: March 28, 2018. Answers (1)
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(b) (i.) What is...(Solved)
(a) (i.) What is a Decision Support System (DSS)?
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Date posted: March 28, 2018. Answers (1)
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In data communication, the communication channel is the route along which data is transmitted. The transmission of data can be described by the following four characteristics:
A. Direction of flow of data.
B. Communication lines.
C. Speed of data transmission.
D. Mode of data transmission.
Required: For each of the following data communication concepts/devices, indicate under which ONE of the above listed characteristics A-D they would best fall: ii. Protocol; iii. Half duplex; iv. Fibre optics; v. Simplex; vi. Analog signal; vii. Micro wave; viii. Band width; ix. Start/stop bit; x. Voice bad.
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Date posted: March 28, 2018. Answers (1)
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Masaku Engineering Co. Ltd, a company that is involved in the design and manufacturing of various products realizes that, in order to remain ahead of its competitors, it must introduce Computer Aided Design (CAD) techniques.
Required:
a) Define what is meant by „Computer Assisted Design‟ techniques
b) List and describe briefly FOUR potential benefits, the company is likely to experience in the adoption of CAD
c) List five physical security procedures that Masaku might adopt to make sure that its information is secure.
Date posted: March 28, 2018. Answers (1)
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(i) What factors would determine the scope of system testing?
(ii) Who are involved in the testing process?
(iii) What do you consider to be limitations of software testing?
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Date posted: March 28, 2018. Answers (1)
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ii) What are...(Solved)
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ii) What are the typical inputs required for the software?
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Date posted: March 28, 2018. Answers (1)
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Date posted: March 28, 2018. Answers (1)
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Date posted: March 28, 2018. Answers (1)
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(2 marks)
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Date posted: March 28, 2018. Answers (1)
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b) In ensuring control over the IS department resources, the company can...(Solved)
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Date posted: March 28, 2018. Answers (1)
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