D322 C182 Final Exam Latest

D322 / C182 Final Exam (Latest Update 2025 / 2026) Introduction to IT | Questions and Answers | 100% Correct | Grade A - WGU

Question:

• types of distributed systems

Answer:

cluster computing, grid computing, cloud computing

Question:

Cluster computing

Answer:

Cluster computing uses many independent computers to provide computation or services comparable to those of a larger machine. Cluster computing provides high availability as it is likely that at least one computer in the cluster will be able to answer a request even when others in the cluster are unavailable or broken down. In addition, clusters can balance loads by automatically shifting requests among the cluster members.

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Question:

Grid Computing

Answer:

A collection of computers, often geographically dispersed, that are coordinated to solve a common problem

Question:

Cloud computing

Answer:

the practice of using a network of remote servers hosted on the Internet to store, manage, and process data, rather than a local server or a personal computer.

Question:

transmission media

Answer:

The radio waves or cable that transport data on a network.

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Question:

Twisted pair cable

Answer:

Cables made of copper wires that are twisted around each other and are surrounded by a plastic jacket (such as traditional home phone wire).

Question:

Coaxial cable (coax)

Answer:

one central wire surrounded by insulation, a metallic shield, and a covering of insulation. The bandwidth of coaxial cables is about 80 times the bandwidth of twisted wires. Cable modems and televisions typically use coaxial cables

Question:

fiber-optic cable

Answer:

A cable that transmits data at close to the speed of light along glass or plastic fibers. Fiber-optic cable are able to transmit large volumes of data. Their bandwidth can provide up to 26,000 times the bandwidth of the twisted pair wires, at the time of this writing.

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Question:

Repeaters

Answer:

extend the range of cabling types so connections can be made by increasing the strength of the network signal. For example, if two twisted pair cabling networks are 500 feet apart, a repeater can be used to extend the 300 feet range of twisted pair cabling to 500 feet. Repeaters can be used on fiber and coaxial also.

Question:

Bridges

Answer:

used to connect to different types of network and provide management of the message. For example, a bridge can connect a twisted pair and coaxial network. The bridge analyzes the network message and will only bridge the network if a message is addressed to a device on the other side.

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