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.
Z = X NOR Y
Z = X XOR Y
Z = X AND Y
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 6[1 Mark]
Which of the following gates implement the equivalent logic to the configuration represented below?
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 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.
Identify two stakeholders in the new system
Outline two different forms of data collection that could be used to gain information from stakeholders to create the new system
Outline the importance of prototypes when developing new computer systems.
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.
Suggest one alternative changeover process.
Question 13[3 Marks]
State why user documentation is important
State two methods for providing user documentation
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