IT concepts and Terminology IV

Which of the following is the largest unit of data storage?

• Megabyte (MB)

• Kilobyte (KB)

• Gigabyte (GB)

• Petabyte

Answer explanation

A petabyte is a larger unit of data storage, equivalent to 1,000 terabytes. A kilobyte is the smallest of the available options. A gigabyte is not the largest of the available options. A megabyte is not the largest of the available options.

An Internet service provider (ISP) advertises a "Gigabit Internet package” which offers a connection speed of 1 Gigabit per second (Gbps). This does not mean that you can download files at a speed of 1 Gigabyte per second (Gbps). Why?

• This is just a promotional trick from the ISP

• The file system on your hard drive shrinks file size, allowing more data to pass at once

• q gigabit equals 1/8th of a gigabyte

• there is no difference between a gigabit or gigabyte

Answer explanation

Gigabit and Gigabyte are different units. 1 Gigabit per second (Gbps), which is a measurement of speed used by internet service providers, equals 1/8th or 0.125 Gigabytes per second (GBps). So, if the ISP promises 1 Gbps, you should divide by 8 to get the actual download speed in GBps. A Gigabit is smaller than a Gigabyte. To be precise, 1 Gigabyte equals 8 Gigabits. While ISPs do market their services to appeal to customers, the distinction between Gigabits and Gigabytes is a legitimate and consistent measure in the IT industry. The size of a file doesn't change based on your hard drive's filesystem. Gigabits and Gigabytes refer to units of digital information transfer and storage, each with their own sizes and purposes.

Tom, an IT support staff, is addressing a sudden issue with a previously functioning printer in the office. What's the importance of Tom asking users if anything has changed recently with the printer or related systems?

• It allows Tom to avoid having to lookout the printer himself

• it makes users feel more involved and less likely to complain

• It can lead Tom to immediate solutions without need further investigation

• recent changes can often cause new issues, so recognizing them helps diagnose the problem quicker.

Answer explanation

Explanation

Understanding if any changes were made recently can guide the troubleshooting process, as new issues often arise as a result of recent changes. Asking about recent changes is a key part of troubleshooting, not a way to avoid hands-on work. While understanding recent changes can help point to possible causes, it's unlikely to bypass the need for further investigation. Although user involvement can improve their cooperation, the primary goal of asking this question is to uncover potential causes of the issue.

What is the final step in the troubleshooting methodology?

• establish a plan of action

• implement the solution

• document the findings/lessons learned, actions and outcome.

• Test the theory to determine the cause

Answer explanation

The final step in the troubleshooting methodology is to document the findings, lessons learned, actions taken, and outcomes of the troubleshooting process. Establishing a plan of action is a step in the troubleshooting methodology, but it comes before implementing the solution and verifying full system functionality, not at the end. Testing the theory to determine the cause is a part of the troubleshooting methodology, but it is not the final step. Implementing the solution is a step in the troubleshooting methodology, but it is not the final step.

Which of the following fundamental data types is specifically used to represent whole numbers without any decimal or fractional parts in a programming context?

• Float

• Boolean

• Integer

• Char

Answer explanation

Explanation

Integers represent whole numbers without any decimal or fractional parts. It is designed specifically for this purpose and accommodates a wide range of positive and negative numbers, including zero. Booleans represent truth values, typically true or false, in programming. They are not used for representing whole numbers or any other numeric values. Char represents individual characters, including letters, digits, or special symbols, in a programming context. It is not designed to represent whole numbers without decimal or fractional parts. Floats or Floating-point numbers represents real numbers with decimal or fractional parts in programming. Though it can represent whole numbers, its primary purpose is to handle numbers with decimal points, making it less suitable for the given criteria.

Which of the following devices is correctly classified with its primary function in a computer system?

• CPU-Storage

• Mouse-Output

• Speaker-Input

• Monitor-Output

Answer explanation

A Monitor is indeed an output device. It displays data processed by the computer in a form that is usable and understandable by the user. A mouse is actually an input device. It's used to enter directions to the computer, making it primary for input, not output. The CPU is the primary processing unit of a computer. It performs most of the processing inside the computer, making this classification incorrect. It's not primarily for storage. Speakers are output devices. They take the processed digital signal from the computer and convert it into audible sound waves, classifying them as output devices, not input.

Which of the following fundamental data types is used to represent numeric values, such as whole numbers and real numbers, in a programming context?

• Numbers

• Char

• String

• Boolean

Answer explanation

Numbers represent various types of numeric values in programming, such as integers (whole numbers) and floating-point numbers (real numbers). They are specifically designed to store and process numeric data. Strings are sequences of characters, used to represent text in programming. While numbers could sometimes be represented as text within strings, this data type is not specifically designed for representing and processing numeric values. The Char data type is used to represent individual characters, including letters, digits, or special symbols, in a programming context. It doesn't represent numeric values as a whole. Boolean data types represent truth values, typically true or false, in programming. They are not used for representing numeric values such as whole numbers or real numbers.

Alex is a project manager who is troubleshooting some issues in his ongoing project. What should be Alex's primary reason for documenting the findings/lessons learned, actions, and outcomes from this troubleshooting process?

• To create unnecessary paperwork.

• To waste time during a project

• to confuse team members

• To provide a record for future references

Answer explanation

ocumenting findings, lessons learned, actions, and outcomes is crucial for providing a record that can be referred to in the future. It helps in understanding what worked, what didn't, and how to improve in the future, and can be particularly useful in troubleshooting to guide future actions. Proper documentation should not confuse team members. Instead, it should provide clarity and guidance for future actions, especially during troubleshooting where clear communication is key. While documentation does involve paperwork, it is not unnecessary. It serves a crucial purpose in any project or process, especially during troubleshooting where it can help identify patterns and solutions. Documenting findings and lessons is not a waste of time. It is a valuable part of the learning and improvement process, and can be particularly useful in troubleshooting to avoid repeating the same mistakes.

Which of the following notational systems utilizes a base of 16, employs digits 0-9 and letters A-F, and is often employed in programming and digital communication to represent binary values in a more compact form?

• Decimal

• Hexadecimal

• Binary

• ASCII

Answer explanation

Hexadecimal is a base-16 numbering system that uses digits from 0-9 and letters A-F to represent values. It is often used in programming and digital communication as a compact form to represent binary values. Binary utilizes a base of 2 and employs only two base digits (0 and 1). While it represents the fundamental building blocks of digital computers, it does not represent values in a compact form like hexadecimal. Decimal is the standard base-10 numbering system that uses digits from 0-9. While it is commonly used in everyday life and mathematics, it does not provide a compact representation of binary values that hexadecimal does. ASCII (American Standard Code for Information Interchange) is a character encoding standard that represents text in computers, communication, and other devices. It is not a numbering system, and therefore does not fit the criteria of the question.

Which of the following is NOT primarily used as a storage device in a computer system?

• Hard disk Drive

• Solid State Drive

• USB Flash drive

• Graphic processing Unit

Answer explanation

A GPU is primarily used in a computer system to render images, video, and animations. It's a processing unit, not a storage device, and while it does have its own memory, that memory is used to hold processed graphic data for output, not for long-term storage of data. A USB flash drive is a storage device that uses flash memory to store data. It's easily removable and typically used to transfer data between computers. An SSD is a storage device that uses non-volatile "flash" memory to store data. SSDs are faster and more durable than hard disk drives but serve the same primary function: storage. A HDD is a storage device used in computers to store data long term. It can hold and retrieve large volumes of data, making it a primary storage device.