What is the maximum working distance of a 1000BASE-ZE SFP transceiver when ordinary single mode fiber?

What is the maximum working distance of a 1000BASE-ZE SFP transceiver when ordinary single mode fiber?
A . up to 70 kilometers
B . up to 40 kilometers
C . up to 550 meters
D . up to 10 kilometers

View Answer

Answer: A

Explanation:

The Cisco GLC-ZX-SM operates on ordinary single mode fiber optic link spans of up to 70 km in length. (http://www.cisco.com/c/en/us/products/interfaces-modules/1000base-zx­sfp/index.html)