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 in GHz, which allows it to process instructions faster. 2. The number of cores, which enables parallel processing and enhances overall performance.

This additional memory is referred to as 'virtual memory.'

The operating system uses virtual memory by swapping data back and forth between the hard disk and the RAM. If the physical RAM is full, it temporarily moves inactive data from RAM to a designated disk space, allowing more active processes to run.

1. Compatibility issues may arise as not all software is supported, potentially limiting functionality. 2. Users may encounter a lack of official support, making troubleshooting more challenging.

1. Accessibility from any device with internet access, offering flexibility for users. 2. Scalability allows businesses to increase or decrease resources as needed without physical constraints.

1. Server virtualization, which allows multiple virtual servers to be hosted on a single physical server, optimizing resource usage. 2. Desktop virtualization, enabling users to access a virtual desktop environment from various devices.

1. Web-based email can be accessed from anywhere with an internet connection, offering greater flexibility. 2. It usually comes with no additional costs for accessing email services.

Search engines track user behavior, including search history and preferences, to tailor search results. By analyzing the user's profile data, they can make recommendations that are more aligned with the user's interests.

Context-aware searches consider situational factors, such as the user's location or time of search, to provide more relevant results tailored to the immediate context.

Businesses gain insight into user behavior, improving marketing strategies by targeting specific demographics and enhancing customer engagement through more relevant content offerings.

1. A mobile app can provide offline access to resources, allowing users to interact with services without needing a constant internet connection. 2. It enhances user engagement by enabling push notifications for timely updates.

1. A distributed database is generally more complex to set up and maintain compared to a centralized system. 2. Synchronization of data can become more challenging, potentially leading to inconsistencies across databases.

A VPN protects employees' data by encrypting online activities, thereby ensuring secure access to corporate resources while working remotely, which is especially important when using public internet connections.

The 'Battery saver' option helps to reduce power consumption, thereby contributing to green computing initiatives.

A mobile hotspot is a portable device that provides internet access by connecting to a mobile network, allowing multiple devices to access the internet simultaneously.

Multitasking is the ability of an operating system to run multiple applications or processes simultaneously, allowing users to switch between them seamlessly.

Multiprocessing involves multiple processors or cores handling different tasks simultaneously, while multitasking can occur on a single processor that switches between tasks rapidly.

Nearby sharing allows devices to exchange files and information wirelessly when they are in close proximity, facilitating easy collaboration and communication between users.

1. Call quality can be affected by internet connection speed and traffic, potentially leading to dropped calls or poor audio. 2. Both parties must have a stable high-speed internet connection to ensure effective communication.

1. Implement IoT sensors to monitor and control temperature levels in real time, enabling prompt action if anomalies occur. 2. Utilize historical data analysis through IoT to predict and prevent potential temperature-related issues.

RFID uses radio waves as the medium to identify objects.

1. RFID tags can be read without direct line-of-sight, allowing for faster scanning. 2. Multiple RFID tags can be read simultaneously, increasing efficiency in tracking inventory.