4.1 Give ONE example of a device that can be classified as an input device and output device - NSC Computer Application Technology - Question 4 - 2023 - Paper 2

• Sending and receiving information: Communication can take place by transferring files or multimedia data between different devices, allowing for information sharing.
• Sharing information through networks: Information can be shared through various channels such as the internet or local networks, enabling real-time data exchange.

Data refers to raw facts and figures that have not yet been processed to provide meaning. An example of data is a list of student names and their corresponding grades.

• Analyzing the data: This process involves examining and interpreting raw data to extract meaningful insights.
• Interpreting the data: In this step, the analyzed data is contextualized to convey relevant information, such as calculating averages or trends from a dataset.

• Performance issues: A noticeable decrease in overall performance, such as slow response times or frequent crashes, can indicate malware infection.
• Unexpected pop-ups: The appearance of unfamiliar pop-up messages or error notifications can also signal a potential malware infection.

• Pausing print jobs: Print jobs can be paused for adjustments or troubleshooting before proceeding.
• Queuing documents: Documents can be placed in a queue, allowing multiple print jobs to be organized and processed in order.

• Increased wear and tear: Frequent defragmentation can lead to unnecessary strain on the hard drive, potentially causing it to fail prematurely.
• Time consumption: Defragmenting takes time, which can disrupt other tasks or processes on the computer.

The purpose of a user interface is to facilitate interaction between the user and the computer system. It allows users to input commands and receive feedback. An example of an input device commonly used is a keyboard.

The resolution can be adjusted within the display settings of the operating system. This is typically found in the 'Settings' menu under 'Display' or 'Screen Resolution'.

• Functionality limitations: If multiple devices converge into a single device, it may lack the full functionality of dedicated devices, leading to compromised performance.
• Higher vulnerability: A single point of failure can create security risks, as an issue with one device can impact all converged functionalities.

• Increased computational power: Grid computing allows companies to perform complex calculations without the need to invest in expensive hardware.
• Resource sharing: It enables multiple tasks to be executed simultaneously, optimizing resource usage within the company.

• Inability to prevent all attacks: Firewalls may not protect against social engineering threats or insider attacks, leaving vulnerabilities.
• Configuration challenges: Incorrect settings might lead to security loopholes or prevent legitimate traffic from accessing the network.

• Upgrading storage devices: Replacing traditional hard drives with SSDs can significantly improve data read/write speeds, minimizing bottlenecks.
• Implementing data compression: Utilizing data compression techniques can reduce file sizes, leading to more efficient data storage and quicker access times.