WGU D322 - INTRODUCTION TO IT
(D322 - INTRODUCTION TO IT)
QUESTIONS AND WELL DETAILED
ANSWERS (MULTIPLE CHOICE) || LATEST
UPDATE 2026 PLUS RATIONALES
1. What is the primary function of an operating system?
A. Store data permanently
B. Manage hardware and software resources
C. Provide internet connectivity
D. Create documents
Answer: B. Manage hardware and software resources
Rationale: The operating system serves as an intermediary between hardware and application
software, managing CPU, memory, storage, and devices.
2. Which of the following is an example of application software?
A. Microsoft Word
B. Windows 10 OS
C. Device driver
D. BIOS
Answer: A. Microsoft Word
Rationale: Application software allows users to perform specific tasks, such as word
processing, unlike system software which manages resources.
3. What is the purpose of BIOS (Basic Input/Output System)?
A. Load application software
B. Perform hardware initialization during boot
,C. Encrypt data on a hard drive
D. Connect to Wi-Fi
Answer: B. Perform hardware initialization during boot
Rationale: BIOS initializes and tests hardware components and loads the bootloader for the
operating system.
4. Which device is considered an input device?
A. Monitor
B. Keyboard
C. Printer
D. Speakers
Answer: B. Keyboard
Rationale: Input devices allow users to enter data into a computer.
5. Which type of storage is volatile and loses data when power is off?
A. RAM
B. SSD
C. HDD
D. ROM
Answer: A. RAM
Rationale: Random Access Memory (RAM) temporarily stores data for active processes and is
cleared when the computer is turned off.
6. Which of the following is an example of a primary network protocol?
A. HTTP
B. JPEG
C. USB
D. BIOS
Answer: A. HTTP
Rationale: HTTP is a protocol for transmitting data over the web. JPEG is a file format, USB
is a hardware standard, BIOS is firmware.
, 7. What does IP stand for in networking?
A. Internet Protocol
B. Internal Process
C. Input Procedure
D. Initial Packet
Answer: A. Internet Protocol
Rationale: IP is a protocol used for addressing and routing packets across networks.
8. Which layer of the OSI model is responsible for routing data between
networks?
A. Physical Layer
B. Network Layer
C. Application Layer
D. Transport Layer
Answer: B. Network Layer
Rationale: The network layer manages addressing, routing, and forwarding of data across
networks.
9. What is the primary purpose of a firewall?
A. Protect against unauthorized network access
B. Encrypt data
C. Monitor CPU usage
D. Manage hard drive space
Answer: A. Protect against unauthorized network access
Rationale: Firewalls monitor and filter incoming and outgoing traffic based on security rules.
10. Which device connects multiple networks together?
A. Switch
B. Router
C. Hub
D. Access point
(D322 - INTRODUCTION TO IT)
QUESTIONS AND WELL DETAILED
ANSWERS (MULTIPLE CHOICE) || LATEST
UPDATE 2026 PLUS RATIONALES
1. What is the primary function of an operating system?
A. Store data permanently
B. Manage hardware and software resources
C. Provide internet connectivity
D. Create documents
Answer: B. Manage hardware and software resources
Rationale: The operating system serves as an intermediary between hardware and application
software, managing CPU, memory, storage, and devices.
2. Which of the following is an example of application software?
A. Microsoft Word
B. Windows 10 OS
C. Device driver
D. BIOS
Answer: A. Microsoft Word
Rationale: Application software allows users to perform specific tasks, such as word
processing, unlike system software which manages resources.
3. What is the purpose of BIOS (Basic Input/Output System)?
A. Load application software
B. Perform hardware initialization during boot
,C. Encrypt data on a hard drive
D. Connect to Wi-Fi
Answer: B. Perform hardware initialization during boot
Rationale: BIOS initializes and tests hardware components and loads the bootloader for the
operating system.
4. Which device is considered an input device?
A. Monitor
B. Keyboard
C. Printer
D. Speakers
Answer: B. Keyboard
Rationale: Input devices allow users to enter data into a computer.
5. Which type of storage is volatile and loses data when power is off?
A. RAM
B. SSD
C. HDD
D. ROM
Answer: A. RAM
Rationale: Random Access Memory (RAM) temporarily stores data for active processes and is
cleared when the computer is turned off.
6. Which of the following is an example of a primary network protocol?
A. HTTP
B. JPEG
C. USB
D. BIOS
Answer: A. HTTP
Rationale: HTTP is a protocol for transmitting data over the web. JPEG is a file format, USB
is a hardware standard, BIOS is firmware.
, 7. What does IP stand for in networking?
A. Internet Protocol
B. Internal Process
C. Input Procedure
D. Initial Packet
Answer: A. Internet Protocol
Rationale: IP is a protocol used for addressing and routing packets across networks.
8. Which layer of the OSI model is responsible for routing data between
networks?
A. Physical Layer
B. Network Layer
C. Application Layer
D. Transport Layer
Answer: B. Network Layer
Rationale: The network layer manages addressing, routing, and forwarding of data across
networks.
9. What is the primary purpose of a firewall?
A. Protect against unauthorized network access
B. Encrypt data
C. Monitor CPU usage
D. Manage hard drive space
Answer: A. Protect against unauthorized network access
Rationale: Firewalls monitor and filter incoming and outgoing traffic based on security rules.
10. Which device connects multiple networks together?
A. Switch
B. Router
C. Hub
D. Access point
