Not completely no, it possibly has around 5metres where it aint possible to install containment so just clipped, what affects could this have on the cable?
It's about the potential for damage to the cable.
There is nothing wrong with an exposed cable per se, although I would be cautious about running one where it was exposed to UV from the sun on a long term basis.
It is easy to damage a data cable by using inappropriate cable clips. In particular, the use of plain wire staples (as favoured by BT for telephone wiring) is not generally recommended as it is difficult to avoid over-driving them, resulting in putting a nasty kink in the cable. This matters a lot for CAT5 and it is even more crucial that it is avoided for CAT6. The longer the run the more important it is that the integrity of the cross section of the cable is not altered at any point and again, whilst important for both types, this is more crucial for CAT6.
It is also very easy to permanently screw up a network cable by pulling it around bends in conduit and the like using force which would not cause the slightest problem to a bit of T&E.
Having said all that this pertains to data integrity and not OC conditions.
For OC I would be looking for a severed cable. It's not impossible but highly unlikely to induce an OC in all 8 cores but in order to do that some major thuggishness would have had to have been deployed in the original running of the cable and the defect would likely have been immediately detectable.
Punch down faults tend not to affect all 8 cores, so I would again be looking for a cut in my cable. it has been noted that the correct form of punch down tool is deployed and this is true. it is, unfortunately, certainly also true that if one tries "hard enough" it is possible to apparently achieve a connection using the wrong tool but it will be very unreliable and liable to fail at any point in the future. Once again though, this happens on a core by core basis, so if you have (had) continuity on the original install and now have none on all 8 cores then it is not likely (although not absolutely guaranteed to be impossible) to be either a punch down or a module issue but a wholesale break in the cable.
It's an Occam's Razor thing.
No continuity on any core? You're looking for serious cable trauma.
Just lost one or two cores? Consider punch down failure, module failure (it doesn't do to cheap out on quality of the component here - especially for CAT6), or cable trauma but less severe than above. This last can be a real sod to find visually, as trauma sufficient to break a single core can be very difficult to spot by eye. Easy to spot with a resistance / continuity check of course and typically is going to require that you strip out and bin the original cable in it's entirely anyway, as patching in new sections of CAT6 cable to replace any physical damage is not recommended from the POV of guaranteeing the data integrity (i.e. speed).
