The newly appointed Certkiller trainee technician wants to know which pins are used to supply power on a standard category 5 cable when connecting an IP Phone to an External Power Patch Panel. What will your reply be?

A.
1,2,3,6

B.
4,5,6,7

C.
4,5,7,8

D.
1-10, 15-20

E.
None of the Above

Explanation:

The Catalyst Inline Power Patch Panel can also work in conjunction with the existing patch-panel configuration (seeFigure 2). Ethernet terminals use pins 1, 2, 3, and 6 fordata transmission, and the Catalyst Inline Power Patch Panel does not access or insert power into these wire pairs. The Catalyst Inline Power Patch Panel acts as a normal patch panel for Ethernet connections that do not require inline power, ensuring reliable performance by keeping unneeded circuitry out of these normal patch-panel connections. The Catalyst Inline Power Patch Panel provides power only on the unused Fast Ethernet pins 4, 5, 7, and 8. Network administrators can count on reliable power distribution that will not interfere with network operations that do not require inline power. http://www.cisco.com/en/US/partner/products/hw/modules/ps2797/products_data_sheet09186a00800a9ea3.htm l