I think you mean SC/APC. It almost surely is single mode. OS2 should be fine. The other measurements probably don't matter as long as you get OS2 single mode with SC connectors with an APC polish on ...

Network cabling is one of those things you don't think about until you're knee-deep in a buildout, and then you realize cheap ...

Someone installed my cat6e wall jack using the "A" pattern. (The A and B patterns are printed right in there to compare with the actual wires.) I checked it and it's "A". I have now put an rj45 plug ...