Which of the following is a factor commonly considered when selecting transmission media?

• A. Type of network, cost, transmission distance, security, error rates, and transmission speed
• B. Cable color
• C. Brand of router
• D. Weather during installation

Answer: (A)

Choosing transmission media is about matching the medium’s strengths and limitations to how the network will be used. You weigh factors like what kind of network you’re building, the total cost, how far signals must travel, the level of security required, the expected error performance in the environment, and the needed transmission speed. Each medium handles these aspects differently, so this set of considerations guides the selection. For instance, fiber offers very high speed and long reach with excellent security and low error rates, while copper and wireless have different trade-offs in cost, distance, and susceptibility to interference. The factors of network type, cost, distance, security, error rates, and speed are what drive the decision. Things like cable color, router brand, or weather during installation do not determine the media’s inherent suitability.