Module 1 Week 2.5.7

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Question #1

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?

A Yes,. All of the requirements for implementing a fiber optic network have been met.

B No. You should not use standard fiber optic switches to create a backbone network for routers.

C No. You should purchase fiber optic equipment that use FC connectors.

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

Question #2

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 to 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?

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

B No. You should use a specialized backbone fiber optic switch to create a backbone network for routers.

C No. You should use single-mode patch cables to connect a GBIC module to a switch.

D Yes. All of the requirements for implementing a fiber optic network have been met.

Question #3

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 second floor.
What could cause this to happen?

A An incorrect subnet mask configured on the workstation.

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

C Two hosts on the network with the same MAC address.

D Collisions between two or more network hosts.

Question #4

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?

A Use a punch down tool to test the network cable between the computer system and the network switch.

B Use a cable tester to test the cable between the network switch and the server system.

C Use a wire crimper to ensure that the cable ends are still fully attached to the cable in two places: between the computer and the network switch, and between the network switch and the server system.

D Use a tone generator to test the network cables between the computer and the network switch and between the network switch and the server system.

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

Question #5

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?

A Physical Contact polish

B Angled Physical Contact polish

C Ultra Physical Contact polish

D Flat Physical Contact polish

Question #6

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

A Ultra Physical Contact (UPC)

B Super Physical Contact (SPC)