Twisted Pair Quiz

Which of the following connectors is used with Ethernet 100BaseT networks? a.) RJ45 b.) ST c.) RJ11 d.) BNC

a.) RJ45 Explanation: - RJ45 connectors are used with Ethernet 100BaseT networks. - RJ11 connectors are used with phone, dial-up internet, and DSL modem connections. - BNC connectors are used with coaxial cable. - ST connectors are used with fiber optic cable.

Which of the following connector types would you most likely use to connect to a T1 WAN service? a.) RJ48c b.) RJ11 c.) RJ45 d.) GG45

a.) RJ48c Explanation: 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? a.) When connecting a phone to a phone line b.) When using single-mode fiber optic cables c.) When using Cat 5 or higher cables d.) When using multi-mode fiber optic cables e.) When using RG-6 cables f.) When using Cat 3 cable

a.) When connecting a phone to a phone line Explanation: An RJ11 connector is used for connecting analog telephones to the telephone jacks.

You are installing networking wiring for a new Ethernet network at your company's main office building. The project specifications call for Cat 5e UTP network cabling and RJ45 wall jacks. Near the end of the project, you run out of wire before the last few runs are complete. You have a spool of Cat 3 network cable in storage. Upon investigation, it appears very similar to Cat 5e wiring. Should you use Cat 3 cabling as a substitute for Cat 5e cabling to finish the project? a.) No, Category 3 cabling doesn't support RJ-45 connectors. b.) No. Cat 5e cabling has more twists per inch than Cat 3 cabling, reducing cross-talk and supporting higher data rates. c.) Yes. You can use Cat 3 cabling as a substitute for Cat 5e cabling, as they are electrically identical. d.) No. Cat 5e cabling uses a thicker copper wire than Cat 3 cable, enabling higher data transmission rates. e.) No. The sheath surrounding Cat 5e cable is much thicker than the Cat 3 sheath, creating an extra layer of shielding that reduces cross-talk and supports higher data rates.

b.) No. Cat 5e cabling has more twists per inch than Cat 3 cabling, reducing cross-talk and supporting higher data rates. Explanation: While Cat 3 and Cat 5e cabling may appear similar physically, they are electrically different. Cat 5e cabling is twisted much tighter than Cat 3 cabling. This reduces cross talk and enables Cat 5e wiring to support much faster data transmission rates.

Why might you use an RJ11 connector? a.) You want to connect the 10BaseT network card in your computer to a switch. b.) You want to connect your computer to the internet with a DSL modem. c.) You want to upgrade your 10BaseT network to 100BaseTX. d.) You want to test a network cable to see if there is a break in the line.

b.) You want to connect your computer to the internet with a DSL modem. Explanation: RJ11 connectors are typically used for telephones and modems.

Which of the following cable types often includes a solid plastic core that keeps the twisted pairs separated? a.) Cat 5e b.) Cat 3 c.) Cat 6 d.) Cat 5

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

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? a.) Cat 5e or Cat 6a cables b.) STP cables c.) Plenum rated cable d.) Fiber optic cables e.) PVC jacketed cables

c.) Plenum rated cable Explanation: 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.