Topic 6 - Resource management(HL)
Question 1
HLPaper 1Outline one advantage of using virtual memory.
Outline one disadvantage of using virtual memory.
Question 2
HLPaper 1State three operating system resource management techniques.
Question 3
HLPaper 1A mobile phone has been developed with its own dedicated operating system and is to be used as part of a smart home system in Singapore. The smart home system includes a centralized air conditioning system, a burglar alarm and a surveillance system.
Identify two functions of an operating system.
Explain one benefit of using a dedicated operating system on the mobile phone instead of a generic operating system.
Explain how sensors and microprocessors are used to ensure that the air conditioning system is able to maintain a constant temperature in the smart house.
The developers of the smart home system are considering developing a smart home system that uses a distributed control system to manage the temperature.
Contrast the use of a distributed air conditioning system with a centralized air conditioning system for maintaining a constant temperature in the smart home.
Question 4
HLPaper 1Identify one advantage of using a dedicated operating system on a mobile phone.
Question 5
HLPaper 1Explain how an operating system manages peripherals.
Question 6
HLPaper 1A company produces and sells domestic floor-cleaning robots.
The floor-cleaning robots can clean different surfaces like wood and carpet. The floor‑cleaning robots can also avoid obstacles or stairs.
Sensors are used by the processor that controls the floor-cleaning robot so that it can move safely.
A computerized security system for the company’s headquarters protects against unauthorized access using a swipe-card system. Each door has a swipe-card reader that is connected to the central computer. A database stores the IDs of all employees and the rooms they are allowed to access.
Describe two types of sensors used in the floor-cleaning robots.
Explain the function of an output transducer in this situation.
Identify one alternative computerized method that could be used in place of the swipe-card readers.
Describe how the method identified in (c)(i) functions.
Compare polling and interrupts as mechanisms for the swipe-card readers to interact with the central computer.
Question 7
HLPaper 1A biotechnology company owns a resource centre which collects and classifies organisms for use in research.
Only authorized employees are allowed access to some laboratories in the resource centre.
These laboratories are protected by locked doors. Each door is controlled by a separate microprocessor. A digital camera is used to scan the iris of an employee who wishes to enter the lab. If the employee is authorized the doors are unlocked.
The company is planning to use a centralized computer system to secure the resource centre’s building.
The operating system has an important role in this system.
Identify two benefits of using a digital camera as an input device in this control system.
Outline the use of a microprocessor in this control system.
Outline the function of an output transducer.
Compare a centrally controlled system with the system described above.
Identify two functions of the operating system.
Polling and interrupt are two operating system management techniques.
Suggest with reasons which of these two techniques is the most appropriate for this centrally controlled system.
Question 8
HLPaper 1Outline what is meant by virtual memory.
Question 9
HLPaper 1Outline the function of an interrupt.
Question 10
HLPaper 1Outline why single processor computers may not be able to render 3D graphics effectively.
