Identifying Coaxial Network Connectors for N10-009
Short answer
C The BNC connector is the specific type designed for transmitting network data over coaxial cables.
Question
Key Takeaways
The question tests knowledge of physical layer connector types by linking them to their specific cable mediums; the main trap is confusing BNC with RJ45 or RJ11 due to visual similarities or general networking familiarity.
This guide explains which connector supports coaxial cable transmission. The correct answer is the BNC connector, distinguishing it from fiber (SC, MPO) and telephone (RJ11) connectors.
Common mistake: Candidates often select RJ11 because they recognize the modular plug shape, but RJ11 is strictly for telephony twisted-pair, not network coaxial. Others may pick SC if they confuse fiber optics with copper coaxial.
Expert Analysis
The question asks to identify the connector type specifically associated with coaxial cable for network data transmission. To answer this, we must evaluate each option against its physical medium and primary application.
Option Analysis
- A. SC (Subscriber Connector): This is a standard fiber optic connector. It uses a push-pull latching mechanism and connects glass or plastic strands, not copper coaxial cables. Therefore, it is incorrect.
- B. MPO (Multi-fiber Push On): This is a high-density fiber optic connector used for multi-fiber cables (e.g., in 40G/100G Ethernet). It does not interface with coaxial cabling.
- C. BNC (Bayonet Neill–Concelman): This is a radio frequency (RF) connector designed specifically for coaxial cable. Historically, it was widely used in early Ethernet networks (such as 10Base2 thinnet) and video surveillance systems. Its bayonet-style locking mechanism matches the requirements of the question.
- D. RJ11: This is a modular connector primarily used for telephone lines (twisted pair wiring). While it looks similar to an RJ45, it has fewer contacts and is not used for modern network data over coaxial media.
Conclusion
The key discriminator here is the cable type: coaxial. Among the choices, only the BNC connector is engineered for coaxial interfaces. While RJ45 is common for twisted-pair Ethernet and SC/MPO are for fiber, BNC remains the correct answer for coaxial network applications in legacy contexts.
As noted in community comments, the BNC connector is distinctively known for its use with RG-58 or RG-59 coaxial cables in older architectures like 10Base2.
Exam Strategy
When facing physical layer questions, always start by identifying the cable medium specified in the scenario (Fiber, Coaxial, Twisted Pair). Match the medium to the connector: Fiber uses LC, SC, MPO; Coaxial uses BNC, F-Type; Twisted Pair uses RJ45, RJ11. Eliminate options that do not match the physical material first.
Frequently Asked Questions
Why is BNC still relevant if modern networks use RJ45?
What is the difference between RJ11 and RJ45?
Community Votes
100% of anonymous learners picked answer C. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 2 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 2
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ERB14 👍 1 Answered CBNC (Bayonet Neill–Concelman): A quick connect/disconnect RF connector commonly used with coaxial cables (such as RG-58 or RG-59) for video signals and older Ethernet architectures (like 10Base2)
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Skri113xX 👍 1 Answered CThe answer is C. The keyword in the question is '[KEYWORD]'.
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