Testout Unit 2

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

-1.2dB

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 users workstation located in a cubicle on the second floor. What could cause this to happen?

A strong EMI emitter near the cable run connected to that interface.

What type of polish grade uses green-colored connectors to help you keep from using the wrong connector type?

Angled Physical Contact (APC)

You need to replace a fiber optic cable that is connecting two switches together. You inspect the existing fiber cable and determine that it 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 polish

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

Cat 6

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

Certifier

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

Crimping tool

Which of the following describes the point where the service providers responsibility to install and maintain wiring and equipment ends and the customers responsibility begins?

Demarc

You have a cable Internet connection at home. The installer had connected the router near the outside wall of your house with RG6 cable. You move the cable router a distance of 50 meters using RG8 cables and special connectors adapters. Which condition are you most likely experiencing?

Echo

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

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 the wiring closet that holds the demarc. Which of the following terms describes the closet on the second floor?

IDF

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

Immunity to electromagnetic interference Greater cable distances without a repeater

Which recommendation should you follow using 110 blocks for connecting Cat 5 and higher data 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 connectors are used with fiber optic cables and include both cables in a single connector? 2

MTRJ / LC

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

Multimeter

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 Cat3 network cable in storage. Upon investigation, it appears very similiar to Cat 5e wiring. 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 building a new network for a small startup financial services company. Security is paramount so each organization within the company will have their own network segments separated by routers. 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 multi-mode GBIC modules on Ebay that you will install in each router and 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 multi-mode patch cables. Will this implementation work?

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

You are building a new network for a small startup financial services company. Security is paramount so each organization within the company will have their own network segments separated by routers. 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 multi-mode GBIC modules on Ebay that you will install in each router and allow them to connect to the switch. Both the switch and the GBIC modules use MTRJ connectors. You purchased several used 1-meter multi-mode patch cables from Amazon. But when they arrived, you noticed that they use LC connectors. Fortunately with some force you found that you are able to get the LC connectors on the cables to lock into the MTRJ connectors on the GBIC modules and on the switch. Will this implementation work?

No. You should purchase patch cables that use MTRJ connectors.

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 cable with an RJ45 connector. Your organizations IT policy states that all cable connectors must be wired according to TIA568A standards.

Pin 1 White with green stripe Pin 2 Solid green Pin 3 White with orange stripe Pin 4 Solid blue Pin 5 White with blue stripe Pin 6 Solid orange Pin 7 White with brown stripe Pin 8 Solid brown

You need to terminate a Cat6 UTP cable with an RJ45 connector. Your organizations IT policy states that all cable connectors must be wired according to TIA568B standards.

Pin 1 White with orange Pin 2 Solid orange Pin 3 White with green stripe Pin 4 Solid blue Pin 5 White with blue stripe Pin 6 Solid green Pin 7 White with brown stripe Pin 8 Solid brown

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. What type of cable must you use?

Plenum rated cable

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

Punch Down tool

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, but cant find any RG-6 cable. Which cable type could you use instead?

RG-59

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

RG-6

F-Type connectors are typically used with which of the following cable standards? (2)

RG-6 RG-59

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

RJ45

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

RJ48c

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

SC ST

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

ST

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 so that a signal sent on Pin 1 arrives on the cable connected to Pin 7. Which term describes this condition?

Short Circuit

Which type of optical fiber is normally used to connect 2 buildings that are several kilometers apart?

Single Mode

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

Single 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?

Smart jack

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 of the following is true about single mode fiber optic network cabling?

Th central core is smaller than standard multi mode fiber optic cabling core

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? (2)

The cable is functioning correctly. / This is a crossover cable.

Which of the following are characteristics of coaxial network cable? (3)

The ends of the cable must be terminating It has a conductor made from copper in the center of the cable It uses 2 concentric metallic conductors

Which of the following are characteristics of an LC fiber optic connector? )=(2)

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

Which of the following are characteristics of an MTRJ fiber optic connector? 2

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

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.

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 directy 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

You want to use the T568B standard for adding connectors to your Cat5 cable. Starting with pin 1 , 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 use an RJ11 connector?

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