WGU D075 Practice Exam Questions – Set 2 – Part 1

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November 28, 2024

Question 01

Which storage device uses integrated circuits and flash memory to store data persistently?

a) Optical disk
b) Solid State Drive (SSD)
c) Hard Disk Drive (HDD)
d) RAM

Correct Answer: b) Solid State Drive (SSD)

Explanation: SSDs use flash memory to store data persistently, providing faster access and more durability compared to traditional mechanical hard drives (HDDs).

Question 02

Which of the following is a computer network that covers a large geographical area and connects LANs, CANs, and MANs together?

a) Local Area Network (LAN)
b) Wide Area Network (WAN)
c) Campus Area Network (CAN)
d) Metropolitan Area Network (MAN)

Correct Answer: b) Wide Area Network (WAN)

Explanation: A WAN connects multiple local networks (LANs) across large geographical areas, such as cities or even countries, making it suitable for large organizations.

Question 03

Which component allows network devices to communicate by forwarding data to the correct location?

a) Router
b) Firewall
c) Switch
d) Hub

Correct Answer: c) Switch

Explanation: A switch filters and forwards data to the appropriate destination within a local network, unlike a hub, which sends the data to all devices on the network.

Question 04

Which of the following defines a file system that stores data in tables connected by relationships?

a) Flat-file database
b) Network database
c) Relational database
d) Hierarchical database

Correct Answer: c) Relational database

Explanation: Relational databases organize data into tables that are connected via relationships. This allows for efficient querying and data management.

Question 05

What is the purpose of a firewall in network security?

a) To speed up network traffic
b) To prevent unauthorized access to a network
c) To establish virtual private networks (VPNs)
d) To allocate network bandwidth

Correct Answer: b) To prevent unauthorized access to a network

Explanation: Firewalls are designed to block unauthorized access to or from a network, thus protecting the internal systems from external threats.

Question 06

Which memory component provides temporary storage that allows data to be accessed in any order without physical movement of media?

a) Cache memory
b) Solid State Drive (SSD)
c) Random Access Memory (RAM)
d) Registers

Correct Answer: c) Random Access Memory (RAM)

Explanation: RAM provides temporary storage that can be accessed randomly without physical movement, making it suitable for fast data access.

Question 07

Which of the following network topologies creates a physical layout in the shape of a star?

a) Ring topology
b) Bus topology
c) Star topology
d) Mesh topology

Correct Answer: c) Star topology

Explanation: In a star topology, each network device is connected to a central hub, forming a shape similar to a star.

Question 08

Which of the following is responsible for managing the operations of the CPU and all other hardware components?

a) Application software
b) Network software
c) Operating System (OS)
d) Database software

Correct Answer: c) Operating System (OS)

Explanation: The OS manages both the CPU and other hardware resources, ensuring that all processes and tasks are executed efficiently.

Question 09

Which device allows a computer to connect to a wired network?

a) Switch
b) Ethernet cable
c) Network Interface Card (NIC)
d) Router

Correct Answer: c) Network Interface Card (NIC)

Explanation: The NIC allows computers to connect to a network via wired connections like Ethernet cables.

Question 10

Which type of memory is faster than RAM but with limited storage capacity?

a) Cache memory
b) Virtual memory
c) Disk storage
d) Solid State Drive (SSD

Correct Answer: a) Cache memory

Explanation: Cache memory is faster than RAM but has less storage capacity. It stores frequently accessed data to speed up processing.

Question 11

Which storage device uses integrated circuits and flash memory to store data persistently?

a) Optical disk

b) Solid State Drive (SSD)

c) Hard Disk Drive (HDD)

d) RAM

Correct Answer: b) Solid State Drive (SSD)

Explanation: SSDs use flash memory to store data persistently, providing faster access and more durability compared to traditional mechanical hard drives (HDDs).

Question 12

Which of the following is a computer network that covers a large geographical area and connects LANs, CANs, and MANs together?

a) Local Area Network (LAN)

b) Wide Area Network (WAN)

c) Campus Area Network (CAN)

d) Metropolitan Area Network (MAN)

Correct Answer: b) Wide Area Network (WAN)

Explanation: A WAN connects multiple local networks (LANs) across large geographical areas, such as cities or even countries, making it suitable for large organizations.

Question 13

Which component allows network devices to communicate by forwarding data to the correct location?

a) Router

b) Firewall

c) Switch

d) Hub