WGU D684 Introduction to Computer Science Test
Bank Questions and Answers (2026/2027) | Real
Practice Questions | Verified Answers | A+
• What is a Repeater in networking? -✓✓A device that receives a signal,
amplifies it, and then retransmits it to extend the range of the network.
• What does LAN stand for? -✓✓local-area network
• What is a Ring Topology Network? -✓✓-A network setup where devices
are connected in a circular or ring-like fashion, with each device connecting
to exactly two others.
Downsides:
-If one device or cable fails, the entire network can be disrupted.
-Data needs to pass through multiple nodes to reach its destination making
it slower than star networks.
-Not suited for large networks.
• What is a Star Topology Network? -✓✓-A network setup where each
device connects to a central hub or switch. The central hub acts as a
conduit for all data transmission. The resulting structure resembles a star
with a hub at the center.
-EX. A home Wi-Fi network where all devices connect to a central wireless
router.
-Easy troubleshooting and only the hub is affected when a device fails
instead of the entire network.
• What is a Bus Topology Network? -✓✓-A network setup where all
devices are connected to a single cable known as a "bus" or "backbone".
Data is transmitted along this cable and is received by all connected
devices, although only the intended recipient will process it.
Downsides:
-When the main cable is damaged the entire network will go down.
-Potential for exposing sensitive information due to the broadcast to all
devices.
-Data collision if multiple devices try to send data simultaneously
, • What does WAN stand for? -✓✓wide area network, made up of LANs
connected over long distances
• What does MAN Stand for? -✓✓Metropolitan Area Network.
Communications network covering a
city or a suburb. Many cellphone systems are MANs.
• What does the latency of a network do? -✓✓Measures the delay before
data begins to transfer after an instruction for its transfer is given.
-Ex. Lagging in an online game. Actions take time to register on the server
and will be reflected on your screen.
• What is a High-level network application protocol? -✓✓Defines rules for
how applications communicate with each other over a network.
Ex.
-HTTP (Hypertext Transfer Protocol)
-FTP (File Transfer Protocol)
-Telnet -used for remote terminal connections
-SSH (Secure Shell)
-NFS (network File system)
-DNS (Domain name system)
-SMTP (Simple Mail Transfer Protocol)
• Arithmetic/logic Unit (ALU) -✓✓is capable of performing basic arithmetic
operations such as adding, subtracting, multiplying, and dividing two
numbers. Also able to perform operations such as AND, OR, and NOT.
• What two special registers make up the control unit and what do they do?
-✓✓Instruction register - contains the instruction that is being executed
Program Counter - contains the address of the next instruction to be
executed.
They are often though of as one unit called the CPU (Central processing
Unit)
• Major component of the von Neumann architecture? -✓✓Memory unit
Bank Questions and Answers (2026/2027) | Real
Practice Questions | Verified Answers | A+
• What is a Repeater in networking? -✓✓A device that receives a signal,
amplifies it, and then retransmits it to extend the range of the network.
• What does LAN stand for? -✓✓local-area network
• What is a Ring Topology Network? -✓✓-A network setup where devices
are connected in a circular or ring-like fashion, with each device connecting
to exactly two others.
Downsides:
-If one device or cable fails, the entire network can be disrupted.
-Data needs to pass through multiple nodes to reach its destination making
it slower than star networks.
-Not suited for large networks.
• What is a Star Topology Network? -✓✓-A network setup where each
device connects to a central hub or switch. The central hub acts as a
conduit for all data transmission. The resulting structure resembles a star
with a hub at the center.
-EX. A home Wi-Fi network where all devices connect to a central wireless
router.
-Easy troubleshooting and only the hub is affected when a device fails
instead of the entire network.
• What is a Bus Topology Network? -✓✓-A network setup where all
devices are connected to a single cable known as a "bus" or "backbone".
Data is transmitted along this cable and is received by all connected
devices, although only the intended recipient will process it.
Downsides:
-When the main cable is damaged the entire network will go down.
-Potential for exposing sensitive information due to the broadcast to all
devices.
-Data collision if multiple devices try to send data simultaneously
, • What does WAN stand for? -✓✓wide area network, made up of LANs
connected over long distances
• What does MAN Stand for? -✓✓Metropolitan Area Network.
Communications network covering a
city or a suburb. Many cellphone systems are MANs.
• What does the latency of a network do? -✓✓Measures the delay before
data begins to transfer after an instruction for its transfer is given.
-Ex. Lagging in an online game. Actions take time to register on the server
and will be reflected on your screen.
• What is a High-level network application protocol? -✓✓Defines rules for
how applications communicate with each other over a network.
Ex.
-HTTP (Hypertext Transfer Protocol)
-FTP (File Transfer Protocol)
-Telnet -used for remote terminal connections
-SSH (Secure Shell)
-NFS (network File system)
-DNS (Domain name system)
-SMTP (Simple Mail Transfer Protocol)
• Arithmetic/logic Unit (ALU) -✓✓is capable of performing basic arithmetic
operations such as adding, subtracting, multiplying, and dividing two
numbers. Also able to perform operations such as AND, OR, and NOT.
• What two special registers make up the control unit and what do they do?
-✓✓Instruction register - contains the instruction that is being executed
Program Counter - contains the address of the next instruction to be
executed.
They are often though of as one unit called the CPU (Central processing
Unit)
• Major component of the von Neumann architecture? -✓✓Memory unit
