What is common to both copper and fiber SFP interfaces?

Both copper and fiber SFP (Small Form-Factor Pluggable) interfaces are hot-swappable, meaning they can be inserted or removed from a networking device without powering down the device. This feature is crucial for maintaining network uptime and performing maintenance or upgrades with minimal service interruption. Inline optical attenuators are used with fiber optics, not copper, and are for reducing signal strength, not boosting it. SFPs are typically designed for either single-mode or multimode fiber, not both in a single module. While some older or lower-end SFPs might operate at 100 Mbps, modern SFPs, especially fiber ones, offer significantly higher bandwidth (e.g., 1 Gbps, 10 Gbps) and operate in full-duplex mode for reliable communication.