When placing an optical fiber cable in the horizontal optical fiber cabling subsystem, what is the MAXIMUM number of splices that can be used?

1 splice is not the maximum - the standard permits up to 2 splices in the horizontal subsystem, so this answer is unnecessarily restrictive.

TIA-568.3-D specifies a maximum of 2 splices in the horizontal optical fiber cabling subsystem. Each splice adds insertion loss to the link, and the 2-splice limit ensures the total channel attenuation stays within the standard's permitted budget while still accommodating necessary field repairs or building geometry constraints.

3 splices exceeds the TIA-568.3-D maximum of 2 and would risk pushing total channel attenuation beyond the allowable link loss budget.

4 splices far exceeds the TIA-568.3-D maximum of 2 and would introduce unacceptable cumulative insertion loss in a horizontal run.

5 splices is well above the standard's maximum of 2 and would render the horizontal fiber channel non-compliant with TIA-568.3-D attenuation limits.