Chapter 2

You manage a network that uses 1000BaseT Ethernet. You find that one device communicates on the network at only 100 Mbps. Which tool should you use to test the drop cable and connection to the network?

Certifier

You are working with 25 pair wires and 66 blocks. You have pushed the wires onto the 66 block, but now you need to cut off the excess of each wire. Which tool should you use?

Punch down tool

which of the following connectors is used with fiber optic cables and requ9ires that you use a twisting motion to connect it?

ST

Which of the following methods would you use to create a crossover cable?

Use the T568A standard on one connector and the T568B standard on the other connector

While viewing the status of the interfaces on a Cisco switch, you see an abnormally large number of CRC errors on one interface. This interface is connected to a user's workstation located in a cubicle on the 2nd floor. What could be causing this to happen?

a strong EMI emitter near the cable run connected to that interface

You need to replace a fiber optic cable that is connecting two switches together. You inspect the existing fiber cable and determine that is uses LC connectors. You also notice the cable's ferrule has a slight slant to it. Which polish grade should you use to replace the existing cable?

Angled Physical Contact

Which type of polish grade uses green-colored connectors to help prevent using the wrong connector type?

Angled Physical Contact (APC)

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

Cat 6

you have a network that occupies both floors of a building. The WAN service provider has installed the line for the WAN service in a wiring closet on the main floor. You have a second wiring closet on the second floor directly above. Which of the following terms describes the closet on the second floor?

IDF

Which of the following are characteristics of coaxial network cable?

It has a conductor made from copper in the center of the cable the end of the cable must be terminated it uses two concentric metallic conductors

Which recommendation should you follow while using 110 blocks for connecting Cat 5 and higher cables?

Keep wire pairs twisted up to within one-half of an inch of the connector

Which of the following terms identifies the wiring closet in the basement or a ground floor that typically includes the demarcation point?

MDF

which of the following cables offers the best protection against EMI?

RG-6

F-Type connectors are typically used with cables using which of the following standards? (Select two)

RG-6 RG-59

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

RJ45

Which of the following connectors usually require polishing as part of the assembly process?

ST SC

Which type of optical fiber is normally used to connect two buildings that are several kilometers apart?

Sinlge-mode

Which of the following are characteristics of an LC fiber optic connector?

They are half the size of standard connectors they use a housing and latch system similar to an RJ45 UTP connector

Consider the 850 nm multimode fiber optic cable shown below. How much loss can you expect between the transmitter and the receiver?

-1.2dB

You are building network cables and attaching RJ45 connectors to each end. Which tool do you need for this task?

Crimping tool

You have a cable Internet connection at home. The installer had connected the router near the outside wall of your house with RG-6 cable. You move the cable router a distance of 50 meters using RG-8 cables and special connector adapters. Which condition are you most likely to experience?

Echo

Which of the following connectors are used with fiber optic cables and include both cables in a single conector?

MTRJ LC

You want to measure the voltage, amps, and ohms of various devices. Which tool should you use?

Multimeter

Which pins in an RJ-45 connector are used to transmit data when used on a 100BaseT Ethernet network?

Pin 1 Pin 2

you need to terminate a Cat 6 UTP with an RJ45 connector. Your organization's IT policy states that all cables connectors must be wired according to TIA568A standards. Match the order.

Pin 1:White/green Pin 2: Green Pin 3: white/orange Pin 4: blue Pin 5: white/blue Pin 6: Orange Pin 7: white/brown Pin 8: brown

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

Plenum rate cable

You use Cat5e twisted pair cable on your network. Cables are routed through walls and the ceiling. A user puts a screw in the wall to hang a picture and pierces the cable such that a signal sent on pin 1 arrives on the cable connected to pin 7. What term describes this condition?

Short circuit

Of the following cables, which offer the best protection against EMI?

Sinlge-mode fiber optic

Users report that the Internet is no longer accessible. You suspect that the line connecting your building to the Internet is not working properly. Which of the following allows the service provider to remotely test the local loop?

Smartjack

You want to use the T568B standard for adding connectors to your cat5 cable. Starting with pin1, which order should you use for the wires within the connector?

White/orange, orange, white/green, blue, white/blue, green, white/brown, brown

Why might you want to use an RJ11 connector?

you want to connect your computer to the internet with a DSL modem

You are working with an older 10Base2 Ethernet network. Which of the following connector types will you most likely encounter?

BNC

Which of the following describes the point where the service provider's responsibility to install and maintain wiring and equipment ends, and the customer's responsibility begins?

Demarc

You have just signed up for a broadband home Internet service that uses coaxial cable. Which connector type will you most likely use?

F-type

Which of the following are advantages of using fiber optic cabling for a network?

Greater cable distances without a repeater Immunity to electromagnetic interference

You are building a new network for a small startup financial services company. Security is paramount, so each organization within the company will have its own network segment separated by a router. However, funds are limited, and you have been asked to keep costs to a minimum. You have acquired a used fiber optic switch and want to use it to create a fiber optic backbone that interconnects all of the routers. You purchased several used single mode GBIC modules on eBay that you will install in each router to allow them to connect to the switch. Both the switch and the GBIC modules use MTRJ connectors. You connect each module to the switch with 1 meter multimode patch cables. Will this implementation work?

No. You should purchase patch cables that use MTRJ connectors

You are building a new network for a small startup financial services company. Security is paramount, so each organization within the company will have its own network segment separated by a router. However, funds are limited, and you have been asked to keep costs to a minimum. You have acquired a used fiber optic switch and want to use it to create a fiber optic backbone that interconnects all of the routers. You purchased several used single mode GBIC modules on eBay that you will install in each router to allow them to connect to the switch. Both the switch and the GBIC modules use MTRJ connectors. You connect each module to the switch with 1 meter multimode patch cables. Will this implementation work?

No. You shouldn't use multi-mode patch cables with single-mode GBIC modules

You are working with an existing fiber optic installation in your building. You want to know the length of each cable that runs through the walls Which tool should you use?

OTDR

Which of the following is used to terminate individual wires from a 25 pair or 100 pair cable using female RJ45 ports?

Patch Panel

you need to terminate a Cat 6 UTP with an RJ45 connector. Your organization's IT policy states that all cables connectors must be wired according to TIA568B standards. Match the order.

Pin 1:White/orange Pin 2: orange Pin 3: white/green Pin 4: blue Pin 5: white/blue Pin 6: green Pin 7: white/brown Pin 8: brown

You have been asked to document the wiring in your building. You would like to identify the length of each Cat5 cable to verify that it meets Ethernet standards. You need to identify the length of the cables, but most cables run through walls and ceilings, making them difficult to trace. Which tool should you use?

TDR

Which on the following is true about single-mode fiber optic network cabling?

The central core is smaller than standard multi-mode fiber optic cabling core

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 runout of wire before the last few runs are complete. You have a spool of Cat 3 network cable in storage. Upon investigations, it appears very similar to Cat 5e wiring. Should you use Cat 3 cabling as a substitute for Cat 5e?

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

You've connected a cable certifier to an RJ45 wall jack, and the output shown below is displayed on the device. What does this output indicate? (Select two.)

the cable is functioning correctly this is a crossover cable

You have a small home network connected to the internet using an RG-6 cable. You need to move the router connecting the network to the internet, buy can't find any RG-6 cable. What cable types could you use instead?

RG-59

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

RJ48c

Which of the following are characteristics of an MTRJ fiber optic connector?

They can be used with multi-mode fiber optic cables They use metal guide pins to ensure accurate alignment

You are troubleshooting a connectivity problem in which one client system is unable to connect to a server. Both the server and client system are connected to the same Ethernet network switch. No other users have complained of a problem, and you suspect that faulty network cabling might be to blame Which of the following troubleshooting steps are you most likely to perform first?

Use a cable tester to test the cable between the computer system and the network switch

You have a network that occupies all three floors of a building. The WAN service provider has installed the line for the WAN service into the building in a wiring closet on the main floor. You have a wiring closet on the two remaining floors directly above the wiring closet on the main floor. What would you use to connect the wiring closets together?

Vertical cross connect

When would you typically use an RJ11 connector?

When connecting a phone to a phone line