Installing a Physical Network Flashcards
Structured cabling:
The critical set of standards used all over the world to install physical cabling in a safe and orderly fashion.
Successful implementation of a basic structured cabling network requires three essential ingredients:
1- A telecommunication room
2- Horizontal cabling
3- Work area
DEMARC EXTENSION:
- Any cabling that runs from the NIU to whatever CPE is used by the
Determining the Location of the Telecommunications Room :
Distance: 90 Meters
Power:
Humidity
Cooling
Access
Attenuation :
As a signal progresses down a piece of wire, it becomes steadily weaker.
Measuring Signal Loss:
It is measured in a UNIT called a DECIBEL (dB).
Fiber Challenges :
Signal Loss/Degradation:
Damaged cables or open connections
A dirty connector
Dispersion: is when a signal spreads out over long distances.
Light leakage: means that part of the signal goes out the cable rather than arriving at the end.
Physical or Signal Mismatch
Fiber Optic runs don’t experience :
Crosstalk or Interference
OTDRs ( Optical Time Domain Reflectometer )
determines continuity and, if there’s a break, tell you exactly how far down the cable to look for the break.
The three big issues with Fiber Optics:
1- Attenuation
2- Light leakage
3- Modal distortion
The Link Aggregation Control Protocol (LACP):
Controls how multiple network devices send and receive data as a single connection
Tone Generator:
: Connects to the cable using alligator clips, tiny hooks, or a network jack, and it sends electrical signal along the wire at a certain frequency
Tone probe:
Emits a sound when it is placed near a cable connected to the tone generator
(MDF) :
The primary equipment room is called the main distribution frame
