6.1 There are many factors that can influence a computer’s performance - NSC Information Technology - Question 6 - 2020 - Paper 2

1. The clock speed of the CPU, measured in GHz, where higher speeds allow for quicker processing of tasks.
2. The number of cores in the CPU, as more cores improve multitasking capabilities and overall performance.

(a) The additional memory is called "virtual memory".

(b) The operating system uses this additional memory by temporarily transferring data that is not currently being used from RAM to a reserved space on the hard drive, allowing it to free up RAM for currently active applications.

1. Limited software compatibility, as not all applications are available or fully supported on Linux compared to Windows.
2. Lack of official support, which can lead to challenges in troubleshooting and software installation issues.

1. Scalability, as cloud computing allows businesses to easily adjust their resources based on demand without significant infrastructure changes.
2. Accessibility, enabling users to access services and data from anywhere with an internet connection.

1. Resource pooling, which allows multiple clients to share computing resources efficiently in a virtual environment.
2. Containerization, which encapsulates applications and their dependencies into lightweight containers for deployment.

1. Web-based e-mail can be accessed from anywhere with an internet connection, providing greater flexibility.
2. Users can avoid the costs associated with ISP-based e-mail services, as web-based options often offer free or lower-cost solutions.

A search engine uses information about the user's previous searches and browsing history to tailor results to their interests and preferences, effectively filtering results to match what the user is likely to find relevant.

Context-aware searches involve utilizing situational data, such as location or current activity, to provide more relevant search results that align with the user's present circumstances.

The business can gain insights into customer behaviors and preferences, leading to improved marketing strategies and higher conversion rates as searches result in more relevant offerings.

1. A mobile app can provide a more streamlined user experience, optimizing features specifically for mobile devices.
2. Mobile apps can send push notifications and alerts to engage users directly on their devices, enhancing customer interaction.

1. A distributed database is typically more complex to set up and maintain, which might overwhelm a small business.
2. The cost involved in implementing the technology and ongoing maintenance could outweigh the benefits for a company that does not require such extensive resources.

A VPN (Virtual Private Network) is useful to employees as it provides a secure and encrypted connection to the company's internal network, safeguarding sensitive information when accessed remotely.

Battery saver mode is related to green computing, as it helps reduce power consumption by managing device settings.

A mobile hotspot is a portable device that provides internet access to other devices by sharing its cellular data connection, allowing for connectivity on the go.

Multitasking refers to the ability of an operating system to manage multiple tasks or applications simultaneously, allowing users to switch between different processes without interruption.

Multiprocessing involves the use of multiple CPUs or cores to carry out different tasks simultaneously, while multitasking is about managing multiple tasks on a single CPU.

Nearby sharing allows devices to communicate and share files wirelessly when they are close to each other, facilitating quick and convenient data transfer.

1. VoIP quality is heavily dependent on internet connection stability; poor connections can lead to dropped calls or poor audio quality.
2. If the internet goes down, the business may lose its primary means of communication with customers.

1. Use IoT-enabled temperature sensors that provide real-time monitoring and alerts if temperatures exceed safe limits, helping to prevent spoilage.
2. Implement automated adjustments through IoT systems that can modify fridge settings based on real-time data to maintain optimal temperatures.

RFID technology uses radio waves to identify and track objects, allowing for contactless data transmission.

1. RFID tags can be read from a distance, allowing for quick inventory scanning without line-of-sight requirements as with barcodes.
2. Multiple RFID tags can be read simultaneously, increasing efficiency in inventory management.