The right answer is C. BNC . A BNC connector is associated with coaxial cabling , which has been used for certain networking, video, and radio frequency applications. In networking history, coax with BNC connectors was common in older Ethernet implementations such as 10BASE2.
The other choices point to different media types. SC is a fiber optic connector. MPO is also a fiber connector, usually for high-density fiber connections. RJ11 is commonly used for telephone wiring rather than coaxial network cabling. Since the question specifically asks about transmission through a coaxial cable , BNC is the only match.
This is one of those basic media and connector recognition questions that CompTIA likes to include. The goal is to connect the connector type to the cabling standard it belongs with. When you see coax, the classic connector to remember is BNC . When you see fiber, think of connectors such as SC, LC, ST, or MPO. When you see telephone pairs, RJ11 is the common answer.
So the clean way to solve this one is by matching cable type to connector type. Coaxial cable goes with BNC .
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