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WGU C182 Introduction to IT Objective
Assessment – Latest Official Exam with
Complete 350 Questions and Verified Detailed
Answers
Official Exam Overview:
The WGU C182 Introduction to IT OA evaluates foundational IT knowledge, focusing on computer
architecture, hardware components, software, networking, and data management. The exam
emphasizes understanding how computer systems process, store, and output information. Candidates
must demonstrate comprehension of the CPU’s structure and function, including the roles of the
Control Unit (CU) and Arithmetic Logic Unit (ALU), and how these components interact to process
input and produce output.
Exam Coverage Areas:
• Basic computer architecture and system components
• Functions and roles of the CPU
• Control Unit (CU) and instruction handling
• Arithmetic Logic Unit (ALU) and data processing
• Interaction between input devices, processing units, and output devices
• Conversion of raw input into processed output
• Practical examples of CPU operations in everyday computing
QUESTION 1:
Which part of the CPU retrieves instructions and input data and coordinates their movement to the
ALU for processing?
A) Arithmetic Logic Unit (ALU)
B) Control Unit (CU) ✅
C) Memory
D) Input/Output Controller
Rationale:
The Control Unit (CU) manages the flow of data and instructions within the CPU, ensuring that the
correct operations are executed in the proper sequence.
QUESTION 2:
Which part of the CPU performs mathematical calculations and logical operations on the data?
,A) Control Unit (CU)
B) Arithmetic Logic Unit (ALU) ✅
C) Registers
D) Cache
Rationale:
The Arithmetic Logic Unit (ALU) executes arithmetic operations like addition or subtraction and
logical operations like comparisons, forming the core data-processing element of the CPU.
QUESTION 3:
How does the ALU interact with input from devices like a keyboard?
A) The ALU stores input permanently
B) The ALU converts raw input into processed output ✅
C) The ALU retrieves instructions only
D) The ALU controls network communications
Rationale:
The ALU processes raw input from devices, performing calculations or logic operations, then
sends the processed data to output devices such as a display screen.
QUESTION 4:
What is the primary responsibility of the Control Unit (CU) in CPU operations?
A) Execute arithmetic calculations
B) Retrieve instructions and manage data flow ✅
C) Provide secondary storage
D) Display output to the screen
Rationale:
The CU orchestrates CPU activities, fetching instructions, decoding them, and directing data
movement to ensure correct processing.
QUESTION 5:
Why is the CPU often called the “brain” of the computer?
A) It stores all files permanently
B) It manages network communications
C) It coordinates instructions and performs processing tasks ✅
D) It powers the computer physically
Rationale:
The CPU, consisting of the CU and ALU, executes instructions, processes data, and controls the
flow of information, functioning as the central processing hub of the computer system.
,Parts of the CPU
Control Unit (CU) - retrieves the instructions and the raw data that is input and coordinates or
controls the sending of those instructions and data to the ALU
Arithmetic Logic Unit (ALU) - does the actual processing of the data; completing mathematical
calculations and logical operations to process the data and converting the input of the keyboard
text entry to output displayed on the screen
System Clock
Controls the speed at which instructions are processed.
RAM
Stands for Random Access Memory.
It temporarily stores data before it is processed and sent to your screen or printer.
It is volatile (means data or information stored disappears when the computer is turned off or
loses power).
You can choose the amount of RAM your computer has.
Types of RAM
Dynamic RAM (DRAM) - typically called main memory
Static RAM (SRAM) - cache memory and registers
BIOS ROM
BIOS stands for Basic Input Output System; ROM stands for Read Only Memory.
Typically stored in ROM chip on the motherboard.
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, Page 2 of 116
Is software not hardware, ("basic" operating system that runs when the computer is first turned
on).
Runs tests of memory and the CPU and initializes hardware components so that the actual
Operating System can be loaded from the hard disk.
Can't choose the amount or contents.
1st Generation of Computers
Vacuum tubes, relay switches, the need to program in machine language
2nd Generation of Computers
Transistor components, magnetic core memory, smaller size, easier to program, disk drives and
drums, called mainframe computers
3rd Generation of Computers
Silicon chips (known as ICs - integrated circuits), reduced cost, called mini computers, networks
introduced via dumb terminals
4th Generation of Computers
Single chip processor, called microcomputer, first personal computer, rudimentary computer
graphics, home use
Information Technology
Technology used in creating, maintaining, and making information accessible.
System Administrator
Maintains all aspects of the system including hardware, software, and programming.
Network Administrator
In charge of all aspects of the computer network
Database Administrator
Focuses on the design, development, and support of database management systems (DBMSs).
2
WGU C182 Introduction to IT Objective
Assessment – Latest Official Exam with
Complete 350 Questions and Verified Detailed
Answers
Official Exam Overview:
The WGU C182 Introduction to IT OA evaluates foundational IT knowledge, focusing on computer
architecture, hardware components, software, networking, and data management. The exam
emphasizes understanding how computer systems process, store, and output information. Candidates
must demonstrate comprehension of the CPU’s structure and function, including the roles of the
Control Unit (CU) and Arithmetic Logic Unit (ALU), and how these components interact to process
input and produce output.
Exam Coverage Areas:
• Basic computer architecture and system components
• Functions and roles of the CPU
• Control Unit (CU) and instruction handling
• Arithmetic Logic Unit (ALU) and data processing
• Interaction between input devices, processing units, and output devices
• Conversion of raw input into processed output
• Practical examples of CPU operations in everyday computing
QUESTION 1:
Which part of the CPU retrieves instructions and input data and coordinates their movement to the
ALU for processing?
A) Arithmetic Logic Unit (ALU)
B) Control Unit (CU) ✅
C) Memory
D) Input/Output Controller
Rationale:
The Control Unit (CU) manages the flow of data and instructions within the CPU, ensuring that the
correct operations are executed in the proper sequence.
QUESTION 2:
Which part of the CPU performs mathematical calculations and logical operations on the data?
,A) Control Unit (CU)
B) Arithmetic Logic Unit (ALU) ✅
C) Registers
D) Cache
Rationale:
The Arithmetic Logic Unit (ALU) executes arithmetic operations like addition or subtraction and
logical operations like comparisons, forming the core data-processing element of the CPU.
QUESTION 3:
How does the ALU interact with input from devices like a keyboard?
A) The ALU stores input permanently
B) The ALU converts raw input into processed output ✅
C) The ALU retrieves instructions only
D) The ALU controls network communications
Rationale:
The ALU processes raw input from devices, performing calculations or logic operations, then
sends the processed data to output devices such as a display screen.
QUESTION 4:
What is the primary responsibility of the Control Unit (CU) in CPU operations?
A) Execute arithmetic calculations
B) Retrieve instructions and manage data flow ✅
C) Provide secondary storage
D) Display output to the screen
Rationale:
The CU orchestrates CPU activities, fetching instructions, decoding them, and directing data
movement to ensure correct processing.
QUESTION 5:
Why is the CPU often called the “brain” of the computer?
A) It stores all files permanently
B) It manages network communications
C) It coordinates instructions and performs processing tasks ✅
D) It powers the computer physically
Rationale:
The CPU, consisting of the CU and ALU, executes instructions, processes data, and controls the
flow of information, functioning as the central processing hub of the computer system.
,Parts of the CPU
Control Unit (CU) - retrieves the instructions and the raw data that is input and coordinates or
controls the sending of those instructions and data to the ALU
Arithmetic Logic Unit (ALU) - does the actual processing of the data; completing mathematical
calculations and logical operations to process the data and converting the input of the keyboard
text entry to output displayed on the screen
System Clock
Controls the speed at which instructions are processed.
RAM
Stands for Random Access Memory.
It temporarily stores data before it is processed and sent to your screen or printer.
It is volatile (means data or information stored disappears when the computer is turned off or
loses power).
You can choose the amount of RAM your computer has.
Types of RAM
Dynamic RAM (DRAM) - typically called main memory
Static RAM (SRAM) - cache memory and registers
BIOS ROM
BIOS stands for Basic Input Output System; ROM stands for Read Only Memory.
Typically stored in ROM chip on the motherboard.
1
, Page 2 of 116
Is software not hardware, ("basic" operating system that runs when the computer is first turned
on).
Runs tests of memory and the CPU and initializes hardware components so that the actual
Operating System can be loaded from the hard disk.
Can't choose the amount or contents.
1st Generation of Computers
Vacuum tubes, relay switches, the need to program in machine language
2nd Generation of Computers
Transistor components, magnetic core memory, smaller size, easier to program, disk drives and
drums, called mainframe computers
3rd Generation of Computers
Silicon chips (known as ICs - integrated circuits), reduced cost, called mini computers, networks
introduced via dumb terminals
4th Generation of Computers
Single chip processor, called microcomputer, first personal computer, rudimentary computer
graphics, home use
Information Technology
Technology used in creating, maintaining, and making information accessible.
System Administrator
Maintains all aspects of the system including hardware, software, and programming.
Network Administrator
In charge of all aspects of the computer network
Database Administrator
Focuses on the design, development, and support of database management systems (DBMSs).
2
