Twisted Pair

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Which of the following cable types often includes a solid plastic core that keeps the twisted pairs separated?

Cat 6 include a solid plastic core that keeps the twisted pairs separated and prevents the cable from being bent too tightly.

Should you use Cat 3 cabling as a substitute for Cat 5e cabling to finish the project?

No. Cat 5e cabling has more twists per inch than Cat 3 cabling, reducing cross-talk and supporting higher data rates.

You are adding new wires in your building for some new offices. The building has a false ceiling that holds the lights and provides an air path for heating and air conditioning. You would like to run your Ethernet cables in this area. Which type of cable must you use?

Plenum rated cable is fire resistant and non-toxic. You must use plenum rated cable to wire in air spaces used by heating and air conditioning systems. You cannot use PVC jacketed cable to wire above ceilings because it is toxic when burned.

Which of the following connectors is used with Ethernet 100BaseT networks?

RJ45 connectors are used with Ethernet 100BaseT networks.

Which of the following connector types would you most likely use to connect to a T1 WAN service?

The RJ48c connector is similar to an RJ45 connector, but has different pin-outs. RJ48c connectors are commonly used for T1 WAN connections.

When would you typically use an RJ11 connector?

When connecting a phone to a phone line

Why might you use an RJ11 connector?

You want to connect your computer to the internet with a DSL modem.


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