Introductory To Fiber Optics Flashcards
Most outside plant (OSP) installations are single-mode (SM) fiber.
True
Outside plant cabling can be installed by ? .
Aerial Suspension
Direct Burial
Pulling in underground conduit
All underground or underwater cables are built to resist ? .
Moisture
Armored cable is used in outside plant installations to ? .
Prevent rodent damage
Fiber is used in long-distance phone networks because it is much cheaper than copper wire.
True
Long distances mean fiber cable are spliced together, mostly by ? , because cables are not manufactured in lengths longer than about four to five kilometers.
Fusion splicing
Splicing is very rare in premises networks.
True
Premises cables in local area network (LAN) backbones often contain ? .
Both multimode and single-mode fiber
Premises cables must be rated for ? to meet codes
Fire retardance
Dangerous light from fiber-optic cables is bright and easily visible.
False
The protective gear every voice/data/video (VDV) installer must always wear is ? .
Eye protection
Information on the safety of chemicals used in fiber optics is ? .
in material safety data sheets (MSDS) supplied by manufacturers
Always keep ? on connectors when not connected to equipment or being tested.
Dust Caps
Besides causing attenuation, dirt particles can cause scratches on the polished fiber ends.
True
