Study Guide to FOA Certification Exam 90 Questions with Verified Solutions., Exams of Study of Commodities

Download Study Guide to FOA Certification Exam 90 Questions with Verified Solutions. and more Exams Study of Commodities in PDF only on Docsity! Study Guide to FOA Certification Exam 90 Questions with Verified Solutions. 1. Which fiber optic connector may be used according to the EIA/TIA 568 cabling standard? - Correct answer any connector with a FOCIS standards document 2. What UTP Cat 3, Cat 5e, and Cat 6 or Class D, E, and F rating indicate? - Correct answer The Performance level of unshielded twisted pair cable 3. Commercial phone systems (not VoIP but POTS) traditionally use multipart UTP cables for backbone connections with _running_____used in the telecom closet for connections to horizontal cables running to the desktop. - Correct answer 66 Punch down blocks 4. TIA Cat 5e or "enhanced Cat 5' cable or ISO/IEC Class D cable was introduced to support the needs of what the computer network? - Correct answer Gigabit Ethernet 5. For certifying Cat 5e/Class D Performance, installed cables are tested at ________. - Correct answer 100 MHz 6. Category 6/Class E cabling is specified and must be tested during certification to _______MHz - Correct answer 250 MHz 7. A copper time domain reflect meter (TDR) can be used to find_________. - Correct answer All of these 8. When terminating Cat5e/6 or Class D/E UTP cabling, what must be remembered to maintain the performance of the installed cable? - Correct answer Keep the pairs twisted to within 1/2 inch of the termination 9. Which punch down block is more often used with multipart cables for POTS (plain old telephone service) connections? - Correct answer Box block 10.Standards are written by manufacturers as minimum specifications to ensure interoperability among various manufacturer's products. - Correct answer True 11.While video surveillance systems traditionally used coax cable, they can use UTP in a structured cabling system or fiber optics also. - Correct answer True Page 1 of 8 12.Gigabit and faster networks only work fiber optics. - Correct answer False 13.Fiber optic installations do not require inspection for compliance to local building or electrical codes since they do not contain copper wires. - Correct answer False 14.The US National Electrical Code (NEC) requires removal of all "abandoned" communications cabling for fire safety. - Correct answer True 15.The international standards include a Class F cable for highest performance networks that some manufacturers sell in the US as Category 7, but it is not currently a US standard. - Correct answer True 16.The name for the current generation UTP cable for use with 10 Gigabit network is _______. - Correct answer Cat 7 17.Voice grade unshielded twisted pair cables (UTP) which are only intended to carry POTS (plain old telephone service) only need testing for_________. - Correct answer Wireman 18.Below is the color code _________ 19. (Colors from left: 1-8: Blue Stripe, Blue, Orange Stripe, Green Stripe, Green, Brown Stripe, and and Brown) - Correct answer Punch down blocks 20.What is maximum length of a permanently installed UTP cabling link allowed in structured cabling standards (the permanent link)? - Correct answer 90 meters (293ft) 21.TIA/EIA 568 and ISO/IEC 11801 standards specify the total length of UTP patch cords in a channel to be less than______. - Correct answer 10 meters 22. If you use a Cat 5/ Class D UTP patch cord on newer Cat 6/Class E cable plant, the link performance will typically meet_____specs. - Correct answer Cat 5/Class D 23.At patch panels, ______should be used to bundle patch cords for neatness to ensure no damage to the cables. - Correct answer Hook and loop cable ties 24.What actually makes the electrical connection with the wires in a 110 block? - Correct answer Insulation displacement terminations in the connecting block Page 2 of 8 50.Cable ties used on category-rated UTP or fiber optic cables____________. - Correct answer can harm cables if too tight, so they should be hand-tightened snugly 51.__________will facilitate installation, allow better planning for upgrades and simplify testing on any cabling system. - Correct answer Proper documentation 52.The primary difference between a fiber optic connector and a splice is_________. - Correct answer Connectors are demountable, while splices are permanent 53.Communication rise cable (Type CMR in the US) shall be listed___________. - Correct answer as being suitable for use in a vertical run in a shaft or from floor to floor and shall also be listed as having fire-resistant characteristics capable of preventing the carrying of fire from floor to floor. 54.What is a "certified" UTP cable? - Correct answer Cable tested to EIA/TIA and ISO/IEC specifications 55.What is included in a UTP cabling "channel” test that is not included in a "permanent link” test? - Correct answer Patch cords and interconnects on either end of the link 56.What is the mostly likely cause if crossed or transposed pairs 2 and 3 in a terminated UTP cabling system? - Correct answer Terminating one end as T568A and the other as T568B 57.What is "power sum" crosstalk? - Correct answer the total crosstalk signals in one pair coupled from the other 3 pairs 58.Fiber optic cables and their connectors should be verified by__________. - Correct answer Visual inspection with microscope, testing for inspection loss with an optical loss test set, confirming connector polarization - a fiber must always go from a transmitter to a receiver: All of the above 59.Test premises cables with an OTDR (optical time domain reflector meter) is_____________. - Correct answer not recommended since cables are generally too short Page 5 of 8 60.Which of these fiber optic cable types may be installed in air handling areas in a building? (US cable types listed) - Correct answer Plenum-rated (OFNP, optical fiber nonconductive plenum) 61.Reference cable for fiber optic testing must match the__________ of the cable being tested. - Correct answer Fiber size and connector type 62.Prior to customer acceptance or system turn-up, __________ is used to test the fiber optic cable to plant ensure it is within the loss budget. - Correct answer Light source and power meter or optical loss test set (LSPM or OLTS) 63.The industry standard method for testing an installed multimode fiber optic cable plant described in__________. - Correct answer OFSTP-14 or ISO/IEC 61280 (multimode) 64.Mixing 50/125 micron fiber with 62.5/125 fiber can cause__________. - Correct answer Excess loss when coupling from 62.5/125 to 50/125 fiber 65.Potential sources of interference for wireless LANS include___________. - Correct answer other wireless networks, Remote controls like door openers, and moving objects: All of the above 66.Video system like CATV or CCTV are traditionally designed to operate over___________ cable. - Correct answer 75 Ohm coax 67.The color code for each pair in a 4-pair UTP cable - Correct answer Blue, Orange, Green, Brown 68.The common IEEE 802.11 wireless LAN is also called. - Correct answer Wi-Fi 69.Most wireless antennas connect to the network by______________. - Correct answer Structure cabling (Cat 5e or fiber) 70.Before beginning a wireless installation, it is most important that you___________. - Correct answer Do a thorough site survey 71.Computer Room - Correct answer Main cross connect 72.Patch Panel Hub, Power Ground, HVAC - Correct answer Telecom closet (telecom room) Page 6 of 8 73.What is the cabling from the telecom closet to the main cross connect or the computer center called? - Correct answer Backbone cabling 74.What is cable from the telecom closet (room) to the work area called? - Correct answer horizontal cabling 75.Fiber Optics - Correct answer Centralized fiber cabling 76.Desktop Workstation - Correct answer Work area 77.A 10 Megabit/s to 10 Gigabit/s local area network (LAN) that is by far the most popular LAN. - Correct answer Ethernet 78.The electronic box that connects the backbone cabling to all the horizontal cables, enabling any PC to talk you any other. - Correct answer Hub or Switch 79.Antenna for Wi-Fi___33 connected to network on cabling. - Correct answer Access Point 80.A smart switch that connects to the premises network to the outside world. - Correct answer Router 81.The Ethernet standard for powering devices from the pairs in a 4-pair UTP cable used for LAN connection. - Correct answer Power over Ethernet (POE) 82.Device that allows mixing cable types, e.g. copper to fiber. - Correct answer Media Converter 83.A connection block incorporating insulation displacement connections for interconnecting copper wires with a special insertion tool. - Correct answer Punch-down block 84.Punchdown block from AT&T 66 Cross Connect System. - Correct answer 66 block (Network) 85.Punchdown block from AT&T 110 Cross Connect System. - Correct answer 110 block (POTS) Plain old telephone services 86.This part is smaller in single mode fiber than multimode fiber - Correct answer Core Page 7 of 8