> For the complete documentation index, see [llms.txt](https://mudassirs46.gitbook.io/network-fundamentals/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mudassirs46.gitbook.io/network-fundamentals/transmitting-data-over-fiber-optic-cable-using-hot-pluggable-transceivers.md).

# Transmitting Data over Fiber Optic Cable (using Hot-Pluggable Transceivers)

* One of the [Physical Layer Standards](https://app.gitbook.com/@mudassirs46/s/network-fundamentals/~/drafts/-MRZ8l67L5MHnaQIEh9W/physical-layer-standards) defines Fiber Optic Cable Standards.
* There are 2 types of Fiber Modes used in [Fiber Optic ](https://app.gitbook.com/@mudassirs46/s/network-fundamentals/~/drafts/-MRZ8l67L5MHnaQIEh9W/cabling-pinouts-fiber-optic)Cable: Single Mode & Multi-Mode
* Hot-Pluggable Transceivers convert the Optical Signals to Electrical Signals & Vice Versa thereby providing an interface between the Fiber optic & Copper Standards.
* **GBIC (Gigabit Ethernet Interface Converter) (SC Connector):**
  * It was the original Transceiver used for Gigabit Interfaces. They were bigger in size.
* **SPF (Small Form Pluggable) (LC Connector):**
  * SPF replaced GBIC as they are smaller in size than GBIC. SPF is also used for Gigabit Interfaces. 
* **SPF+ (Small Form Pluggable Plus) (LC Connector):**
  * The + Sign means an increased Speed. It is the same size as the SPF but is used for 10-Gbps Interfaces.

## Reference:

CCNA 200-301 OCG, Volume 1, Pg. 42 - Wendell Odom.


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