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2.1 Explain why point-to-point connections are used between components that exchange large amounts of data - NSC Information Technology - Question 2 - 2021 - Paper 2
Question 2
2.1 Explain why point-to-point connections are used between components that exchange large amounts of data. 2.2 A CPU is regarded as the 'heart' of a computer. 2.2... show full transcript
Worked Solution & Example Answer:2.1 Explain why point-to-point connections are used between components that exchange large amounts of data - NSC Information Technology - Question 2 - 2021 - Paper 2
Step 1
Explain why point-to-point connections are used between components that exchange large amounts of data.
Answer
Point-to-point connections are utilized between components because they are not shared, ensuring dedicated pathways. This design allows for high data transfer speeds, facilitating effective communication during the exchange of large amounts of data.
Step 2
Step 3
Explain why a CPU with more than one core can process a task faster than a single-core processor.
Answer
A CPU with multiple cores can process tasks faster than a single-core processor because:
- A task is separated into different threads that can be executed simultaneously across multiple cores.
- Multiple cores allow for parallel processing, significantly reducing the time required to complete complex tasks.
Step 4
Give TWO reasons why the cache memory on the CPU speeds up processing.
Answer
- Cache memory stores frequently accessed data and instructions, reducing the time it takes for the CPU to retrieve them.
- It operates at high speed compared to RAM, allowing the CPU to access necessary information more quickly, thus enhancing overall processing efficiency.
Step 5
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Step 7
State why developers can benefit from using virtualisation.
Answer
Developers can benefit from virtualisation as it allows them to test software on different operating systems and platforms without needing multiple physical machines. This capability increases efficiency and reduces costs associated with hardware.
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Step 10
Explain the relationship between the CMOS and the BIOS by referring to the purpose of EACH.
Answer
The CMOS is the type of memory that stores BIOS settings and can be modified, while the BIOS is a firmware that provides essential startup instructions needed to perform the POST (Power-On Self-Test) on a computer.
Step 11
List THREE essential things that you should do to ensure that you will be prepared to rebuild your system after installing a new primary hard disk.
Answer
- Maintain a good backup strategy to save all important files in the cloud or sync across devices.
- Keep detailed records of all license keys and serial numbers for software.
- Store installation files for operating systems and applications in an accessible location for future use.