IT Essentials Midterms Reviewer Chapter 4

Explanation
Preventive maintenance refers to the regular and systematic inspection, cleaning, and replacement of worn parts, materials, and systems. This practice is essential to keep hardware and software in good working condition and reduce faults in various components. By conducting preventive maintenance, potential issues can be identified and addressed before they cause major problems or breakdowns. This proactive approach helps to extend the lifespan of equipment and ensures that it operates efficiently and reliably. Overall, preventive maintenance is crucial for maintaining the overall functionality and performance of systems and preventing unexpected failures.

Explanation
Troubleshooting refers to the systematic process of identifying and resolving issues or faults in a computer system. It involves locating the root cause of the problem and then taking appropriate steps to fix the related hardware or software issues. This process helps in identifying and resolving any technical difficulties or malfunctions that may arise in a computer system, ensuring its smooth functioning.

Explanation
Keeping the can upright when using compressed air prevents the fluid from leaking onto computer components. This is because the fluid is typically stored at the bottom of the can, and if the can is tilted or inverted, the fluid may be released along with the compressed air. By keeping the can upright, the fluid remains at the bottom and does not come into contact with the computer components, ensuring their safety.

Explanation
The given answer, "45 to 90, 45-90," represents a temperature range in degrees Fahrenheit, which is equivalent to 7 to 32 degrees Celsius. This means that the temperature can vary between 45 and 90 degrees Fahrenheit, or between 7 and 32 degrees Celsius.

Explanation
The correct answer is "10-80" or "10 to 80". This range suggests that the humidity level should be maintained between 10 percent and 80 percent. This range ensures a balanced level of moisture in the air, which is important for comfort and health. Humidity levels below 10 percent can lead to dryness and discomfort, while levels above 80 percent can promote the growth of mold and bacteria. Maintaining the humidity within this range helps create a comfortable and healthy environment.

Explanation
Before beginning any troubleshooting, it is important to always perform a backup. This is necessary in order to protect the data on a customer's computer. If any work or troubleshooting results in data loss for the customer, the technician or their company could be held liable. Therefore, performing a backup ensures that the customer's data is safely stored and can be restored if any issues arise during the troubleshooting process.

Explanation
A data backup is a process of creating a duplicate copy of the data stored on a computer hard drive. This backup is saved either on another storage device or in cloud storage, which can be accessed over the internet. Backups are essential in organizations to ensure the safety and availability of data. They can be performed on a regular basis, such as daily, weekly, or monthly, to ensure that the most up-to-date version of the data is always available in case of any data loss or system failure.

Explanation
Open-ended questions are designed to allow customers to provide detailed explanations in their own words. These types of questions are used to gather general information and encourage customers to express their thoughts and opinions freely. By asking open-ended questions, businesses can gain a deeper understanding of the customer's problem or situation and gather valuable insights that may not have been captured through closed-ended questions.

Explanation
Close-ended questions are designed to elicit a specific response, usually a yes or no answer, or a short and concise answer. They are effective in gathering specific information quickly and efficiently. Close-ended questions limit the respondent's options, making it easier to analyze and interpret the data collected. They are commonly used in surveys, interviews, and questionnaires to gather quantitative data.

Explanation
The event viewer is a software tool that displays software errors and their details. It allows users to view and analyze event logs, which contain information about events that occur within a computer system. By using the event viewer, users can identify and troubleshoot software errors, track system events, and monitor system performance. It provides a comprehensive view of the system's activities, helping users identify and resolve issues effectively.

Explanation
Device Manager is a software that displays all the devices that are configured on a computer. It provides a detailed list of all the hardware components and peripherals connected to the computer, including information about their drivers, status, and properties. It allows users to manage and troubleshoot devices, update drivers, enable/disable devices, and view device properties. Device Manager is a built-in feature of the Windows operating system and is commonly used by users and system administrators to monitor and control the devices connected to a computer.

Explanation
The Task Manager is a system utility in Windows that displays the applications that are currently running. It also has the ability to close applications that have stopped responding. Additionally, it allows users to monitor the performance of the CPU and virtual memory, view all processes that are currently running, and view information about the network connections.