Two network technicians are installing a fiber-optic link between routers. The technicians used a light meter to
verify the correct fibers. However, when they connect the fibers to the router interface, the link does not
connect. Which of the following would explain the issue? (Choose two.)


A. They used the wrong type of fiber transceiver.
B. Incorrect TX/RX polarity exists on the link.
C. The connection has duplexing configuration issues.
D. Halogen light fixtures are causing interference.
E. One of the technicians installed a loopback adapter.
F. The RSSI was not strong enough on the link.