Free CompTIA ITF+ IT Concepts and Terminology Questions and Answers — Questions and Answers
Question 1: A user is trying to solve a recurring computer issue. After identifying the problem, what is the NEXT logical step according to the standard troubleshooting methodology?
- Document findings, actions, and outcomes.
- Establish a theory of probable cause. (Correct answer)
- Test the theory to determine the cause.
- Establish a plan of action to resolve the problem.
Correct answer: Establish a theory of probable cause.
The standard troubleshooting methodology follows a specific order: 1. Identify the problem. 2. Establish a theory of probable cause. 3. Test the theory. 4. Establish a plan of action. 5. Implement the solution. 6. Verify full system functionality. 7. Document findings. After identifying the problem, the next step is to formulate a hypothesis about what might be causing it.
Question 2: Which of the following data types is MOST appropriate for storing a value like 'true' or 'false'?
- String
- Integer
- Boolean (Correct answer)
- Float
Correct answer: Boolean
A Boolean data type is specifically designed to represent one of two logical states: true or false. An integer is for whole numbers, a float is for decimal numbers, and a string is for a sequence of characters.
Question 3: A technician is explaining computer components to a new employee. The technician describes the four basic steps of computing and processing. Which of the following correctly lists these four steps in order?
- Processing, Input, Storage, Output
- Output, Input, Processing, Storage
- Storage, Processing, Input, Output
- Input, Processing, Output, Storage (Correct answer)
Correct answer: Input, Processing, Output, Storage
The fundamental computing cycle consists of four stages in a specific order: 1. Input: Data is entered into the system. 2. Processing: The data is manipulated by the CPU. 3. Output: The processed information is presented to the user. 4. Storage: The data or information is saved for future use.
Question 4: Which of the following is a number system that uses a base of 16 and includes the digits 0-9 and the letters A-F?
- Binary
- Decimal
- Hexadecimal (Correct answer)
- ASCII
Correct answer: Hexadecimal
Hexadecimal is a base-16 number system. It uses sixteen distinct symbols, most often the symbols 0–9 to represent values zero to nine, and A, B, C, D, E, F to represent values ten to fifteen. Binary is base-2, and decimal is base-10. ASCII is a character encoding standard, not a number system.
Question 5: An IT professional is measuring the clock speed of a CPU. Which of the following units of measure would be the MOST common and appropriate to use?
- Gigabytes (GB)
- Megabits per second (Mbps)
- Gigahertz (GHz) (Correct answer)
- Terabytes (TB)
Correct answer: Gigahertz (GHz)
CPU clock speed is measured in cycles per second, and the common units are hertz (Hz). Modern processors operate at very high speeds, so gigahertz (GHz), meaning billions of cycles per second, is the most appropriate unit. Gigabytes and terabytes measure storage capacity, while megabits per second measures data transfer speed.
Question 6: A programmer is writing a line of code to store a customer's full name, 'John Smith'. Which data type should be used for this purpose?
- Char
- Boolean
- Integer
- String (Correct answer)
Correct answer: String
A string is a data type used to represent a sequence of characters. Since a full name consists of multiple characters (letters and a space), a string is the appropriate choice. A 'char' typically holds only a single character, an 'integer' holds whole numbers, and a 'Boolean' holds true/false values.
Free CompTIA ITF+ IT Concepts and Terminology Questions and Answers
A user is trying to solve a recurring computer issue.
After identifying the problem, what is the NEXT logical step according to the standard troubleshooting methodology?