LearnNetwork

Question 1 of 3

Which form factor would you choose for a single 100 GbE uplink on a modern data center switch?

SFP+QSFP+QSFP28SFP28

Question 2 of 3

A 10G fiber link won't come up. The DDM shows Rx Power = -40 dBm on the local optic. Most likely cause?

Negotiation mismatchNo light reaching the local optic — broken fiber, dirty connector, or dead far-end opticVLAN mismatchWrong subnet mask

Question 3 of 3

What does the LR in 10GBASE-LR tell you?

Long reach single-mode, typically 1310 nm to 10 kmLocal RepeaterLimited Range copperLong Reach multi-mode

Optical transceivers — SFP, SFP+, QSFP, and friends — Quiz