Question

RJ-45 conncectors are use for solid-wire UTP cords, however it can be difficult to add Rj-45 connectors to stranded-wire cords.  This is needed in networking to make an ethernet connection. 

Answer 1

1. The RJ-45’s insulation displacement approach is to help with crimping.  When wires are shortened properly, the result is that there will be a little bit of jacket inside the RJ-45 connector.  The front of the connector would have eight pins, so when you crimp the connector these pins will be forced through the insulation and into the wire itself. The overall result would be that the wire would be connected to the connector’s pins and this is known as insulation displacement connection (IDC).

2. The strain relief approach is that when there is a crimp, the crimper will force a ridge in the back of the RJ-45 connector into the jacket of the cord. The purpose of this is to provide strain relief, which means that pulls on the cord, they will only be able to pull only to the point where the jacket has the ridge forces into it, they will not be able to cause strain where the wires connect to the pine. 

a. The RJ-45's insulation helps with crimping.

b. Strain relief approach is when there is crimping, there will be  ridge in the back of the RJ-45, so the cord does not get strain when pulling.