In addition, the sometimes harsh Andean environment meant that agriculture was viewed as a form of warfare so that, as the historian T. N. D'Altroy eloquently put it, The Incas approached farming with weapons in their hands and prayers on their lips (276).
Small Form-Factor Pluggable Transceiver (SFP) A small form-factor pluggable (SFP) transceiver is a compact, hot-swappable, input/output transceiver used in data communication and telecommunications networks. SFP interfaces between communication devices like switches, routers and fiber optic cables, and performs conversions between optical and electrical signals.
For details on this implementation, refer to http://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_bulletin_c25-530836.html. 1000BASE-EX SFP for Long-Reach Single-Mode Fibers. The 1000BASE-EX SFP operates on standard single-mode fiber-optic link spans of up to 40 km in length.he GLC-GE-DR-LX SFP can interoperate with other 1G SFPs/interfaces as long as those are based on 1000BASE-LX/LH standard. No attenuator is needed in any fiber strand. Platform Support. The Cisco 1-Gbps SFPs are supported across a variety of Cisco networking equipment.