Questions and Answers
According to the fundamental diagram of traffic flow, what is the relation between road traffic flux and traffic density?
As traffic density increases, road traffic flux decreases
What is the primary purpose of the fundamental diagram of traffic flow?
To predict the capability of a road system
What happens when the state of flow changes from stable to unstable in the fundamental diagram of traffic flow?
The number of vehicles entering the control zone is greater than the number of vehicles leaving the zone
Which protocol is responsible for ensuring reliable transmission of data in the Internet protocol suite?
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Which organization funded the research and development of early versions of the Internet protocol suite?
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What is the purpose of the four abstraction layers in the Internet protocol suite?
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Which of the following is NOT one of the levels of certification offered by Cisco Systems?
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Which of the following is NOT one of the technical fields for which Cisco offers certification paths?
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Which type of Cisco certification requires a hands-on exam administered at special labs around the world?
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Study Notes
Traffic Flow and Fundamentals
- The fundamental diagram of traffic flow illustrates an inverse relationship between road traffic flux and traffic density.
- The primary purpose of the fundamental diagram is to understand and model traffic flow, providing insights into traffic behavior and congestion.
Traffic Flow State Changes
- When the state of flow changes from stable to unstable, traffic congestion increases, and the flow becomes less efficient.
Internet Protocol Suite
- The Transmission Control Protocol (TCP) is responsible for ensuring reliable transmission of data in the Internet protocol suite.
Internet Protocol Development
- The Advanced Research Projects Agency (ARPA) funded the research and development of early versions of the Internet protocol suite.
Internet Protocol Abstraction Layers
- The four abstraction layers in the Internet protocol suite (Physical, Network, Transport, and Application) enable modularization and abstraction of network functions, facilitating design, implementation, and troubleshooting.
Cisco Certifications
- Cisco does not offer a "Master" level of certification.
- Cisco does not offer certification paths in "Education" as a technical field.
- The CCIE (Cisco Certified Internetwork Expert) certification requires a hands-on exam administered at special labs around the world.
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