WGU D317 – IT Applications Final Prep
Exam (Latest Update 2026/2027)
Questions and Verified Answers | 100%
Correct | Grade A.
1. Which of the following best describes the primary purpose of an
operating system?
A. To design computer hardware
B. To manage hardware resources and provide services for
applications
C. To create spreadsheets automatically
D. To replace application software
Rationale: An operating system (OS) acts as the intermediary between
hardware and software. It manages system resources such as memory,
processors, storage, and input/output devices while providing a
platform for applications to execute efficiently. Without an OS, users
would need to interact directly with hardware components.
2. Which storage device typically provides the fastest read and write
performance?
A. HDD
B. Optical disc
,C. Solid-state drive (SSD)
D. Magnetic tape
Rationale: SSDs use flash memory rather than spinning disks, allowing
significantly faster data access, quicker boot times, improved
application performance, and greater durability because they contain
no moving mechanical parts.
3. What is the primary purpose of RAM in a computer system?
A. Long-term storage of files
B. Temporary storage of active programs and data
C. Permanent firmware storage
D. Archiving backups
Rationale: Random Access Memory (RAM) temporarily stores data and
instructions currently being used by the CPU. Since RAM is volatile
memory, its contents are lost when power is removed, making it ideal
for fast, temporary storage.
4. Which networking device forwards packets based on IP
addresses?
A. Hub
B. Switch
C. Router
D. Modem
,Rationale: Routers operate primarily at Layer 3 of the OSI model and
determine the best path for packets between networks using IP
addressing and routing tables.
5. Which Windows utility is commonly used to manage running
processes?
A. Device Manager
B. Disk Cleanup
C. Task Manager
D. Registry Editor
Rationale: Task Manager provides information about running
applications, background processes, CPU utilization, memory usage,
startup programs, and allows administrators to end unresponsive
processes.
6. Which command displays the IP configuration of a Windows
computer?
A. ping
B. tracert
C. ipconfig
D. nslookup
Rationale: The ipconfig command displays detailed IP addressing
information including IPv4 address, subnet mask, default gateway, DNS
servers, and adapter configurations.
, 7. What does DNS primarily do?
A. Encrypt network traffic
B. Assign MAC addresses
C. Translate domain names into IP addresses
D. Compress internet data
Rationale: The Domain Name System (DNS) converts human-readable
domain names such as www.example.com into numerical IP addresses
required for network communication.
8. Which cybersecurity principle ensures that information is
accessible only to authorized users?
A. Availability
B. Confidentiality
C. Integrity
D. Accountability
Rationale: Confidentiality protects sensitive information from
unauthorized disclosure through mechanisms such as encryption,
authentication, and access controls.
9. Which malware disguises itself as legitimate software?
A. Worm
B. Trojan horse
C. Spyware
D. Rootkit
Exam (Latest Update 2026/2027)
Questions and Verified Answers | 100%
Correct | Grade A.
1. Which of the following best describes the primary purpose of an
operating system?
A. To design computer hardware
B. To manage hardware resources and provide services for
applications
C. To create spreadsheets automatically
D. To replace application software
Rationale: An operating system (OS) acts as the intermediary between
hardware and software. It manages system resources such as memory,
processors, storage, and input/output devices while providing a
platform for applications to execute efficiently. Without an OS, users
would need to interact directly with hardware components.
2. Which storage device typically provides the fastest read and write
performance?
A. HDD
B. Optical disc
,C. Solid-state drive (SSD)
D. Magnetic tape
Rationale: SSDs use flash memory rather than spinning disks, allowing
significantly faster data access, quicker boot times, improved
application performance, and greater durability because they contain
no moving mechanical parts.
3. What is the primary purpose of RAM in a computer system?
A. Long-term storage of files
B. Temporary storage of active programs and data
C. Permanent firmware storage
D. Archiving backups
Rationale: Random Access Memory (RAM) temporarily stores data and
instructions currently being used by the CPU. Since RAM is volatile
memory, its contents are lost when power is removed, making it ideal
for fast, temporary storage.
4. Which networking device forwards packets based on IP
addresses?
A. Hub
B. Switch
C. Router
D. Modem
,Rationale: Routers operate primarily at Layer 3 of the OSI model and
determine the best path for packets between networks using IP
addressing and routing tables.
5. Which Windows utility is commonly used to manage running
processes?
A. Device Manager
B. Disk Cleanup
C. Task Manager
D. Registry Editor
Rationale: Task Manager provides information about running
applications, background processes, CPU utilization, memory usage,
startup programs, and allows administrators to end unresponsive
processes.
6. Which command displays the IP configuration of a Windows
computer?
A. ping
B. tracert
C. ipconfig
D. nslookup
Rationale: The ipconfig command displays detailed IP addressing
information including IPv4 address, subnet mask, default gateway, DNS
servers, and adapter configurations.
, 7. What does DNS primarily do?
A. Encrypt network traffic
B. Assign MAC addresses
C. Translate domain names into IP addresses
D. Compress internet data
Rationale: The Domain Name System (DNS) converts human-readable
domain names such as www.example.com into numerical IP addresses
required for network communication.
8. Which cybersecurity principle ensures that information is
accessible only to authorized users?
A. Availability
B. Confidentiality
C. Integrity
D. Accountability
Rationale: Confidentiality protects sensitive information from
unauthorized disclosure through mechanisms such as encryption,
authentication, and access controls.
9. Which malware disguises itself as legitimate software?
A. Worm
B. Trojan horse
C. Spyware
D. Rootkit
