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

1. Transfer of files: Devices communicate by sending and receiving files, which may include multimedia or text-based content. For example, a computer can send a document to another system over a network.

2. Sharing information among devices: Devices can also share information directly or through a central server, utilizing methods such as instant messaging or video conferencing.

Data refers to raw facts and figures that represent information without context. An example of data is a list of numbers indicating temperatures recorded over a week.

1. Data Analysis: In this process, raw data is scrutinized to extract meaningful patterns or insights. For example, analyzing sales data to identify trends.

2. Data Interpretation: This involves creating context around the analyzed data, such as summarizing findings from sales analyses to inform business strategies.

1. Decreased performance: If the computer begins to slow down significantly or experiences frequent crashes, this may indicate a malware infection.

2. Unexpected pop-ups: Frequent pop-up messages or advertisements that appear without user interaction might suggest the presence of unwanted software.

1. Pausing print jobs: Users can pause documents being sent to the printer, allowing for priority tasks to be addressed first.

2. Cancelling/Restarting print jobs: Users can cancel any print jobs that are no longer needed or restart them if necessary.

1. Increased wear on the hard drive: Constantly defragmenting a hard drive can lead to wear and tear, possibly shortening its lifespan.

2. Time-consuming: The process can take a significant amount of time, leading to reduced performance while the defragmentation is in progress.

The purpose of a user interface (UI) is to facilitate interaction between the user and the computer system by providing a way for users to input commands and receive feedback. An example of an input device commonly used with a UI is a mouse.

To resolve the resolution error message, navigate to the display settings on your operating system. Here, you can adjust the screen resolution to a supported value for your monitor.

1. Functionality limitations: Some devices may lack functionality if they are combined to perform multiple functions, leading to a decrease in overall performance.

2. Higher complexity: The integration of multiple functionalities into a single device can make it more complex and harder to use for individuals unfamiliar with such systems.

1. Increased computing power: Grid computing allows companies to distribute complex tasks across many systems, thus providing greater processing capability.

2. Resource optimization: This approach enables better utilization of underused computing resources within an organization.

1. Unable to prevent all types of attacks: Firewalls may not effectively block some sophisticated attacks or social engineering techniques.

2. Misuse of passwords: Firewalls cannot prevent unauthorized access if passwords are shared or poorly managed.

1. Implement faster storage solutions: Upgrading to SSDs or higher-capacity drives can alleviate bottlenecks in data access speed.

2. Data compression: Utilizing data compression techniques can reduce the amount of storage space required, thus improving overall data management.