(i) System control is the method by which a system adapts to changes in the environment in order to give the expected output or to perform to the expected level.
(ii) Sub-systems
This means that, a system does not exist alone, but it is composed of subsystems, which are also made up of other subsystems
Kavungya answered the question on November 6, 2019 at 06:05
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Explain the difference between Trojan horse and Hoax viruses.
(Solved)
Explain the difference between Trojan horse and Hoax viruses.
Date posted:
November 6, 2019
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Answers (1)
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Computer can fail to work due to problems associated with operating system. Explain how the following problems can be corrected.
(i) Run time problems
(ii) Corrupted...
(Solved)
Computer can fail to work due to problems associated with operating system. Explain how the following problems can be corrected.
(i) Run time problems
(ii) Corrupted registry
Date posted:
November 6, 2019
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Answers (1)
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State the meaning of the following operating systems terms:
(i) Interrupt
(ii) Trouble shooting.
(iii) Clock speed.
(Solved)
State the meaning of the following operating systems terms:
(i) Interrupt
(ii) Trouble shooting.
(iii) Clock speed.
Date posted:
November 6, 2019
.
Answers (1)
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Differentiate between a word and a word length as used in data representation.
(Solved)
Differentiate between a word and a word length as used in data representation.
Date posted:
November 6, 2019
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Answers (1)
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Using one's complement, perform the following binary arithmetic leaving the answer in decimal notation.
11012 - 1001012
(Solved)
Using one's complement, perform the following binary arithmetic leaving the answer in decimal notation.
11012 - 1001012
Date posted:
November 6, 2019
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Answers (1)
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Using two's complement, show how the arithmetic below would be carried out on a 8 – bit computer system. (+54) – (+29).
(Solved)
Using two's complement, show how the arithmetic below would be carried out on a 8 – bit computer system. (+54) – (+29).
Date posted:
November 6, 2019
.
Answers (1)
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A car rental firm leases its cars for Kshs. 2500.00 per day. The manager gives a discount based on the number of days that the...
(Solved)
A car rental firm leases its cars for Kshs. 2500.00 per day. The manager gives a discount based on the number of days that the car is rented. If the rental period is greater than or equals to 7 days then a 25% discount is given. Write a pseudo-code to accept a car number and the rental period, and calculate the total amount earned by the company when a car is leased.
Date posted:
November 6, 2019
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Answers (1)
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Give one reason to the growth of communication industry in Kenya.
(Solved)
Give one reason to the growth of communication industry in Kenya.
Date posted:
November 6, 2019
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Answers (1)
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Define the following terms as used in a worksheet.
i) Columns
ii) Rows
(Solved)
Define the following terms as used in a worksheet.
i) Columns
ii) Rows
Date posted:
November 6, 2019
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Answers (1)
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State the cursor action when the following keyboard keys are pressed
i. Delete key
ii. Insert key
iii. Pgup (page up) key
iv. Pgdwn (page down) key
(Solved)
State the cursor action when the following keyboard keys are pressed
i. Delete key
ii. Insert key
iii. Pgup (page up) key
iv. Pgdwn (page down) key
Date posted:
November 6, 2019
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Answers (1)
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State any two laws governing protection of information.
(Solved)
State any two laws governing protection of information.
Date posted:
November 6, 2019
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Answers (1)
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State the function of an Address register.
(Solved)
State the function of an Address register.
Date posted:
November 6, 2019
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Answers (1)
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Give three reasons why a company may prefer a tailor made software over off the shelf software.
(Solved)
Give three reasons why a company may prefer a tailor made software over off the shelf software.
Date posted:
November 6, 2019
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Answers (1)
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Distinguish between an integrated software and a software suite.
(Solved)
Distinguish between an integrated software and a software suite.
Date posted:
November 6, 2019
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Answers (1)
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State any two sensory devices used in virtual reality.
(Solved)
State any two sensory devices used in virtual reality.
Date posted:
October 29, 2019
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Answers (1)
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Find the BCD equivalent of 3710
(Solved)
Find the BCD equivalent of 3710
Date posted:
October 11, 2019
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Answers (1)
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Workout using two’s complements
5710 – 2910
(Solved)
Workout using two’s complements
5710 – 2910
Date posted:
October 11, 2019
.
Answers (1)
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Workout the equivalent of the following
1001110.100112 = X10
(Solved)
Workout the equivalent of the following
1001110.100112 = X10
Date posted:
October 11, 2019
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Answers (1)
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Describe three factors that cause system entropy
(Solved)
Describe three factors that cause system entropy
Date posted:
October 11, 2019
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Answers (1)
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a)Study the Pseudo code below and answer the questions that follows.
BEGIN
Print “enter the value of A and B”;
Read A, B
Y =...
(Solved)
a)Study the Pseudo code below and answer the questions that follows.
BEGIN
Print “enter the value of A and B”;
Read A, B
Y = A+B
While Y<20 Do
BEGIN
PRINT Y
A = B
B = Y
Y = B+A
END WHILE
PRINT A, B, Y;
END
i)Assuming the user keys in 2 and 4 when prompted to enter the values for A and B respectively, determine the values of A, B and Y show your working
ii)State the control structures used in the above pseudocode.
b)Draw a flowchart that would be used in place of the pseudocode
c)Give three examples of Iteration construct
Date posted:
October 11, 2019
.
Answers (1)