Topic1 and 2 Nov 2022 by Pooja Arora | Assessment

Question 1[4 Marks]

Describe one advantage and one disadvantage of using surveys to gather information when planning a new system.

Question 2[1 Mark]

Select the boolean function equivalent to the logic gate configuration represented below.

(a).

Z = X NOR Y

(b).

Z = X XOR Y

(c).

Z = X AND Y

(d).

Z = X NAND Y

Question 3[4 Marks]

Memory management is an important function of modern Operating Systems (OS). Outline one benefit and one disadvantage of OS memory management.

Question 4[4 Marks]

Construct both a logic diagram and truth table for the following expression:

A AND (A OR NOT B)

Question 5[2 Marks]

Contrast alpha and beta testing

Question 6[1 Mark]

Which of the following gates implement the equivalent logic to the configuration represented below?

(a).

NOR

(b).

XOR

(c).

XNOR

(d).

NAND

Question 7[3 Marks]

Outline the function of the address bus and state one of its roles in the machine execution cycle.

Question 8[1 Mark]

Convert the binary number 01011100 held in computer memory to a hexadecimal (base 16) number to be displayed on screen.

Question 9[3 Marks]

Identify three main functions of an Operating System (OS).

Question 10[1 Mark]

State how many different colours can be represented by two hexadecimal characters.

Question 11[1 Mark]

Calculate the largest memory address that can be represented using 9 bits. Provide your answer in the denary (base 10) number system.

Question 12[13 Marks]

A bookshop is planning on implementing a new computer system to manage sales. The shop has 2 managers, 10 shop assistants and a security guard.

(a).

Identify two stakeholders in the new system

[2]

(b).

Outline two different forms of data collection that could be used to gain information from stakeholders to create the new system

[4]

(c).

Outline the importance of prototypes when developing new computer systems.

[2]

(d).

The company is proposing to use a direct changeover method to implement the new system, outline one reason why this could be a poor decision.

[3]

(e).

Suggest one alternative changeover process.

[2]

Question 13[3 Marks]

(a).

State why user documentation is important

[1]

(b).

State two methods for providing user documentation

[2]

Pooja Arora

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