CompTIA Network+ (N10-007) — Question 327

A network engineer is adding a switch uplink to an existing IDF. Upon inspection, the engineer finds that there are only two strands of single-mode fiber in the IDF, and both strands are in use. Which of the following solutions should the engineer use to provide an additional switch uplink without installing new fiber optic cabling?

Answer options

• A. Install bidirectional transceivers.
• B. Install SFP+ transceivers.
• C. Install media converters.
• D. Install duplex transceivers.

Correct answer: A

Explanation

Bidirectional transceivers allow data to be sent and received over a single fiber strand by using different wavelengths, enabling the use of existing fibers for additional uplinks. The other options don't solve the issue of needing additional uplink capacity on the existing fibers without new cabling; SFP+ transceivers and media converters do not provide the necessary additional capacity, and duplex transceivers require two strands for operation.