Questions and Answers
Collision detection is turned on in half-duplex mode.
True
Which of the following physical topologies are used with Ethernet networks? (Select two.)
Which Gigabit Ethernet standard can support long network segments up to a maximum of 5 km when used with single-mode fiber optic cable?
1000BaseLX
Which Gigabit Ethernet standard uses multimode fiber optic cabling and supports network segments up to a maximum of 550 meters long?
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What type of cabling do Ethernet 100Base-FX networks use?
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What is the maximum cable segment length allowed for 100Base-FX half-duplex multimode cable?
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What is the maximum cable segment length allowed for Fast Ethernet using twisted-pair cables?
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Which Ethernet standard meets the design requirements for a high-speed network backbone over a distance of around 300 meters? (Choose two.)
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Which standard and cable type would you choose for very long distances using fiber optic cables? (Select two.)
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What are the minimum requirements for implementing 10 Gbps Ethernet over a distance of 1 kilometer or greater? (Select two.)
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Study Notes
Half-Duplex Mode
- Half-duplex mode requires collision detection to be activated.
Ethernet Network Topologies
- Ethernet networks can utilize bus and star physical topologies.
- Hubs can be cascaded to create a tree topology.
Gigabit Ethernet Standards
- 1000BaseLX supports long segments (up to 5 km) with single-mode fiber optic cable.
- 1000Base-SX utilizes multimode fiber optic cabling, maximum segment length of 550 meters, with specific cabling requirements for optimal length.
- 1000Base-FX supports up to 550 meters with multimode and up to 10 kilometers with single-mode cabling.
Cable Types for Ethernet Standards
- 100BaseFX networks operate using fiber optic cabling.
- 100Base-FX half-duplex multimode cable has a maximum segment length of 412 meters.
- 100Base-TX (Fast Ethernet) twisted-pair cables support a maximum segment length of 100 meters.
Designing Ethernet Networks
- For distance requirements around 300 meters using existing multimode fiber, consider 1000Base-SX and 10GBase-SR standards.
- 10Base-FL is slower and not suitable for high-speed designs; 10GBase-T and 1000Base-T require copper wiring.
Long-Distance Ethernet Implementation
- Implement long-distance fiber optic networks with 1000BaseLX and single-mode fiber for maximum distance capabilities.
- For 10 Gbps speeds over distances of 1 kilometer or more, utilize 10GBaseLR standards with single-mode fiber.
Summary of Ethernet Standards and Cable Capacities
- Multimode fiber is more cost-effective but limited in distance compared to single-mode fiber.
- 10GBaseSR supports distances of up to 300 meters; 10GBaseER extends capabilities up to 40 kilometers using single-mode fiber.
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Description
Test your knowledge of networking concepts with these practice flashcards. This quiz covers half-duplex modes and physical topologies used in Ethernet networks. Perfect for beginners and anyone looking to refresh their understanding of network fundamentals.
