According to the CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025), the SFP (Small Form- Factor Pluggable) connector is directly associated with fiber-optic networking. The guide lists:
"SFP (small form-factor pluggable) connectors are commonly used in fiber-optic connections to allow hot- swappable transceivers for different types of fiber cables." Additionally, the same guide's chapter on Networking Concepts and Technologies explains:
"Fiber-optic around 2 Gbps - Incredibly fast and more expensive than DSL or cable." Therefore, fiber Internet is the only service type that uses SFP connectors for data transmission over optical cables.
Verified Reference:
* Chapter 8: Networking Concepts and Technologies - "External network connections" and "Common Internet connection types and speeds" (pp. 429-435).
* Chapter 2: Peripherals and Connectors - "SFP (small form-factor pluggable) connectors" (pp. 97-98).