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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. ... 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 crucial in high-performance computing as they are not shared and provide dedicated pathways for data transfer. This ensures high data transfer speeds and minimizes bottlenecks, which is particularly important when dealing with 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, such as a dual-core or quad-core processor, can handle several threads simultaneously. This allows it to process tasks more efficiently as different threads can execute on different cores, thereby reducing the time taken to complete complex processes.
Step 4
Give TWO reasons why the cache memory on the CPU speeds up processing.
Answer
- Cache memory stores frequently accessed data and instructions close to the CPU, providing rapid access compared to fetching from slower RAM.
- It helps reduce the CPU's wait time for data, preventing slower processes from bottlenecking the overall system performance.
Step 5
Step 6
Discuss TWO characteristics of RAM.
Answer
- RAM is electronic and has no moving parts, which contributes to its speed and efficiency compared to mechanical storage devices.
- RAM is volatile, meaning it loses its data when power is interrupted, making it crucial for temporary data storage during computing processes.
Step 7
State why developers can benefit from using virtualisation.
Answer
Using virtualisation, developers can test software across different operating systems and platforms without needing multiple physical machines. This flexibility enhances testing efficiency and can save on resource allocation, time, and costs.
Step 8
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Step 10
Explain the relationship between the CMOS and the BIOS by referring to the purpose of EACH.
Answer
CMOS is a type of memory that stores the BIOS settings, which can be changed, while the BIOS directs the computer on how to perform basic functions and conduct the Power-On Self-Test (POST) during startup.
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, ensuring that all critical data is saved to an external storage or cloud service.
- Keep a record of all software licenses and serial numbers for easy reinstallation.
- Store installation media such as CDs or USB drives in an accessible location.
Step 13
Explain why it is a good idea to make the contents of a disk a backup.
Answer
Having a backup of disk contents is essential as it protects against data loss due to hardware failure, accidental deletion, or malware attacks. Backups ensure that critical information can be restored quickly and efficiently when needed.
Step 14