NT1310 Physical Networking

ITT TECHNICAL INSTITUTE

NT1310 Physical Networking

ASSESSMENTS

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09/27/2012

NT1310 Physical Networking

Mid-Term Exam
Scope This exam tests the objectives in Units 1-4.

1. Which of the following is not a common cable used today? a. Twisted-Pair b. Fiber-Optic c. Plenum d. Coaxial 2. What unit of measurement is a tenfold logarithmic ratio of power output to power input? a. Volts b. Hertz c. Watts d. Decibel 3. Which of the following does not contribute to attenuation? a. Conductor resistance b. Mutual capacitance c. Impedance d. Frequency increases 4. Which of the following is not a type of crosstalk? a. Alien Crosstalk b. Pair-to-Pair Crosstalk c. Equal-Level Far-End Crosstalk d. Mutual Crosstalk 5. Which organization is part of the US government? a. Federal Communications Commission b. Underwriters Laboratories c. National Fire Protection Association d. Institute of Electrical and Electronic Engineers 6. What is the National Fire Protection Associate (NFPA) responsible for? a. Works with cabling and other manufacturers to ensure that electrical devices are safe. b. The development and publication of the National Electric Code. c. Helps promote standardization of electrical components, power wires and cables. d. Responsible for 30 percent of the electrical-engineering, computer and controltechnology literature published in the world today.

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NT1310 Physical Networking

7. A telecommunications room can sometimes be referred to as: a. Telecommunications closet b. Wiring closet c. All of the above d. None of the above 8. Backbone cabling includes which of the following: a. Cabling between equipment rooms and building entrance facilities b. In a campus environment, cabling between buildings' entrance facilities c. Vertical connections between floors d. All of the above 9. Which of the following is not a network architecture commonly used today? a. Ring b. Hub c. Hierarchical star d. Bus 10. Which of the following is true about 10Base-T networking? a. 10Base-T requires only two wire pairs of an eight-pin modular jack. b. The minimum length of a 10Base-T cable is 2 feet. c. There is no maximum length for a 10Base-T cable. d. All of the above 11. According to the NEC, Article 800.100, primary protectors shall be grounded: a. The grounding conductor shall be insulated and listed as suitable for the purpose. b. The grounding conductor shall be attached to the grounding electrode. c. If a separate grounding electrode is installed for communications, it must be bonded to the electrical electrode system with a conductor. d. All of the above 12. Which of the following is an advantage of knowing and following the electrical and building codes? a. It helps when working with local, city, county or state officials. b. It helps protect the building's occupants. c. It helps when working with electricians and contractors. d. All of the above 13. What is generally considered the weakest link in your network setup? a. Horizontal Cables b. Patch Cables c. Backbone Cables d. Patch Panel and rack

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NT1310 Physical Networking

14. What is a benefit of a full equipment cabinet? a. Lightweight b. Open design makes it easy to work in c. The security of locking cabinet doors d. All of the above 15. What are punchdown blocks generally used for? a. Modular patch panels b. Common grounding c. Telephone systems d. Fiber-optic tiedowns 16. What type of tool would be best for add connectors to twisted-pair cable? a. Wire cutters b. Pliers c. Punch-down tools d. Crimpers 17. What tool would be helpful to run cable through walls? a. Fish tape b. Fiberglass pushrods c. Both a and b d. None of the above 18. What can cable-toning tools be used to test? a. Continuity b. Length of the run c. Shorts and Crosses d. All of the above 19. What is wire-pulling lubricant used for? a. Allows cable to slide easily over surfaces during a pull. b. Never hardens, allowing cables to be removed easily later. c. Easily allows other cables to pass through tight spaces later. d. All of the above 20. Which additional tools might be handy to carry with you? a. Stud finder b. Hammer c. Wrenches d. All of the above

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NT1310 Physical Networking

21. If the tip wire in your pair is white/blue, what color would you expect the ring to be? a. White b. Blue c. Orange d. White/Orange 22. How many pairs of wires are in a binder group? a. 2 b. 10 c. 25 d. 100 23. Which of the following is not a benefit of coaxial cabling? a. High attenuation b. Well shielded c. High bandwidth capabilities d. Easy to install 24. Which of the following is not true about patch cables? a. Making one yourself is best since you get more accurate length b. Choose the correct category for your desired performance level c. Using the same manufacturer usually ensures better compatibility d. Having standard conductors will increase flexibility in use 25. When pulling cable, what can you do to avoid damaging the cable? a. Always bend at 90 degree angles to ensure consistency b. Twist cabling as tight as possible to prevent movement c. Remove as much cable jacket as possible at the end of runs d. All of the above 26. Electromagnetic interference can be prevented by: a. Data cabling sharing the same bore holes as power cables b. Data cabling being at least 6 inches away from lightning rods c. Data cabling sharing the same stud space as power outlets d. Data cabling crossing power cables at right angles 27. What is the main difference between fiber-optic and copper media? a. Fiber-optic is easier to install b. Copper transmits data faster c. Fiber-optic transfers digital light pulses instead of electrical voltage transmissions d. Copper transfers digital light pulses instead of electrical voltage transmissions

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NT1310 Physical Networking

28. Which of the following is not an advantage of fiber-optic cabling? a. Immunity to electromagnetic interference b. Cheaper than copper c. Better security d. Longer maximum distance 29. Which of these is a component of fiber-optic cabling? a. Buffer b. Strength members c. Outer jacket d. All of the above 30. Which of the following is added to fiber-optic cabling to provide additional support? a. Nylon b. Aluminum coating c. Plastic d. All of the above 31. Which of the following is not a fiber rating used for choosing a fiber-optic cable? a. Optical capacitance b. Number of optical fibers c. Core/cladding size d. LAN/WAN application 32. Which of the following should be considered when installing fiber? a. Always terminate fiber b. Always use 30% more fiber than needed, for future splicing purposes c. Match the rating of the fiber your are installing to the equipment d. a and c 33. What is the most common wall plate mounting in commercial applications? a. Remodel boxes b. Outlet boxes c. Cut-in plates d. Mini-rack mountings 34. When choosing a fixed-design wall plate, what factors should you consider? a. Number of jacks b. Type of jacks c. Labeling d. All of the above

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NT1310 Physical Networking

35. Which of the following is not an advantage of biscuit jacks? a. Inexpensive b. Less bulky than other modular plates c. Rated for high-speed data communications d. Easy to install 36. If you use the wrong type of cable/connector combination, what could happen? a. Shorts b. Higher electromagnetic interference c. Intermittent connection errors after your system is running d. Increased stress on upstream components 37. What type of tool do you need to attach a BNC connector? a. Punch-down tool b. Crimper c. Wrench d. Wire cutters 38. Which of the following is not needed in a standard network installation? a. Crossover cable b. Network interface card c. Hub d. Switch 39. What layer of the OSI reference model do routers work on? a. Software b. Hardware c. Network d. None of the above 40. Which of the following devices do not work with infrared transmissions? a. Transistor radios b. Remote controls c. Wireless switches d. Wireless hubs 41. Which of these is not an advantage of infrared? a. High bandwidths b. No Weather attenuation c. No FCC license required d. Ease of installation

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NT1310 Physical Networking

42. Which of these is not an advantage of RF (radio frequency)? a. No line-of-sight needed b. Low cost c. Flexibility d. Long range 43. Which of these is not an advantage of microwave communication? a. Very high bandwidth b. Long range c. Can be point-to-point or broadcast d. Inexpensive 44. Which of these is an element of a successful cabling installation? a. Using proper design b. Using quality materials c. Speed of workmanship d. a and b 45. Which of these are not elements of proper design? a. Flexibility b. Longevity c. Name brand products d. Ease of administration 46. Which of these are carried via today's cabling systems? a. Data b. Voice c. Fire detection d. All of these 47. What considerations need to be made when building a telecommunications room? a. Telephone wiring b. HVAC c. Power requirements d. All of these 48. Which of these is not a step in a common cabling installation procedure? a. Pre-measure the cables b. Terminate the cables c. Test the cables d. Schedule the installation

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NT1310 Physical Networking

49. Which of the following is an example of a makeshift tool? a. Wire cutters b. Tennis ball c. Duct tape d. b and c 50. What should be included in cabling system documentation? a. Termination plan b. Cabling map c. Your name and contact information d. All of the above

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NT1310 Physical Networking

NT1310 Physical Networking

Final Exam
Scope This exam tests the objectives in Units 1-10.

1. What tools would you need to install a twisted-pair cable connector? a. Wire stripper b. Cable tester c. Crimper d. All of the above 2. What is a fiber-optic microscope used for when installing a connector on a fiber-optic cable? a. Detecting dirty, cracked or scratched connectors b. Verifying fiber tips aren't bent c. Testing the length of the fiber d. Certifying your cable meets industry specifications 3. Which of the following is not a cause of crosstalk issues? a. Improper patch cables b. Inferior components c. Not enough twisting d. Shorts 4. What information is not necessary in a Request for Proposal? a. Input from other's on the project b. Components of the cabling infrastructure c. Information on where equipment will be purchased d. Details of the work area 5. What is important during the vendor selection phase after you create an RFP? a. Selecting a vendor who balances between cost and performance b. Proven expertise in projects of similar scope, size and complexity c. Conformance with all appropriate codes, ordinances, articles and regulations d. All of the above 6. What is refraction? a. The bouncing of light off a boundary area back towards its source b. The bending of light as it passes from one material into another c. The passing of electrical signals from one cable to another through a connector d. The loss of optical power as the signal travels through the fiber

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NT1310 Physical Networking

7. What was the first full-scale commercial application of fiber-optic communication systems? a. AT&T and GTE's telephone systems (1977) b. Arpanet (1963) c. Xerox 813 desktop copier (1963) d. Google Talk (2005) 8. How are optical fibers and copper different? a. Optical fibers can't send binary data b. Copper can't send binary data c. Copper can't be used for communication d. None of the above 9. How is digital data transmission superior to analog data transmission? a. Digital transmission isn't affected by noise b. Digital transmission isn't affected by attenuation c. All of the above d. Neither of the above 10. Which of the following is not part of a typical optical fiber? a. Coating b. Copper c. Cladding d. Core 11. Optical fiber has a high tensile strength. This means that __________. a. It resists stretching b. It won't bend c. It can be submerged in water d. All of the above 12. Which of these are methods commonly used to make optical fiber? a. Modified chemical vapor deposition b. Vapor axial deposition c. Plasma moderated composition d. Both a and b 13. How does dispersion affect optical fiber? a. Lowers the overall bit rate b. Blurs and blends digital signals together to the point that they are unusable c. Degrades or destroys the distinct pulses of the digital signals in the light d. Both b and c

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NT1310 Physical Networking

14. What is attenuation? a. The bouncing of light off a boundary area back towards its source b. The passing of electrical signals from one cable to another through a connector c. The loss of optical power as the signal travels through the fiber d. The bending of light as it passes from one material into another 15. Which of the following is true about microbends? a. They are small distortions of the boundary layer between the core and the cladding b. They are always visible when inspecting the cable. c. They can be caused by the packaging of the cable d. Both a and c 16. What does the numerical aperture express? a. The light-gathering ability of the fiber b. The max attenuation for the fiber c. The flexibility of the cable before a macrobend occurs d. None of the above 17. Which of the following is not a good work habit? a. Keep a clean workspace b. Keep bottlecaps on water bottles c. Put your emergency contact in your cell phone d. None of the above 18. Which of the following is true about laser safety? a. Always treat optical fiber coupled with a laser as "turned on" until you know otherwise b. Do not look at the fiber end without some kind of protection c. Hazardous laser areas should be clearly identified with warning placards and signs. d. All of the above 19. Which of these ways will help with rounding up loose fiber after cleaving? a. Create a barrier around your work area b. Use a dim light source c. Double up adhesive tape and pat it over the work surface d. a and c 20. Which of these chemicals is completely safe to work with? a. Isopropyl alcohol b. Solvents c. Anaerobic Epoxy d. None of the above

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NT1310 Physical Networking

21. What should your first response to any site emergency be? a. Call 911 b. Remain calm c. Apply first aid d. Report it to your work supervisor 22. What service does the jacket/sheath perform for a fiber-optic cable? a. Holds the wires in place b. Insulates the wires to keep them at the proper temperature c. Protects the wires from the environment d. Both a and c 23. What factors need to be considered when choosing a fiber-optic cable? a. Type of signal carried b. Flammability c. Armor d. All of the above 24. Which of the following is not a common type of strength member in a fiber-optic cables? a. Aluminum shards b. Aramid yarns/Kevlar c. Fiberglass rods d. Steel 25. Which of the following cables are commonly used in connections to equipment and patch panels? a. Distribution cables b. Breakout cables c. Messenger cables d. Cordage 26. Which of the following is not one of the NEC recognized Fiber-Optic Cable types? a. Noncorrosive b. Conductive c. Nonconductive d. Composite 27. Which of the following can come marked on an optical-fiber cable? a. NEC markings b. Catalog numbers c. Color codes d. All of the above

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NT1310 Physical Networking

28. Which of the following reasons could be used to justify splicing an optical-fiber cable? a. To repair a damaged cable b. To join two different cable types c. To turn corners without bending d. Both a and b 29. Which of these factors could affect how well a splice performs? a. Core diameter mismatch b. Heat index mismatch c. Mode field diameter mismatch d. Both a and c 30. Which piece of equipment is not needed for a splice? a. Cleavers b. Cleaning materials c. Steel wool d. Buffer and coating removal tool 31. Why would you choose mechanical splicing over fusion splicing? a. Initial setup cost b. Speed c. Accuracy d. None of the above 32. Why would you use connectors over splicing? a. Connectors are permanent, while splices can be taken apart b. Splicing is permanent while connectors can be taken apart c. Splicing is more cost-effective long term d. None of the above - you should never use connectors over splicing 33. Which of the following tools are not needed to add a connector to a fiber-optic cable? a. Epoxy b. Scribe c. Needle-nosed pliers d. Lint-free wipes 34. Why would you want to use LED as a light source over laser? a. Low cost b. High speeds needed c. High transmission distance needed d. Both a and b

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NT1310 Physical Networking

35. What limits the bandwidth of today's fiber-optic communication systems? a. Data size b. Wire width c. Crosstalk d. None of the above 36. Which of the following is not one of the subassemblies of a typical fiber-optic receiver? a. Electrical subassembly b. Optical subassembly c. Optical coupler d. Receptacle 37. Which of the following is a parameter you'll need to be familiar with when dealing with a passive optical network? a. Connector types b. Types of loss c. Fireproofing specifications d. All of the above 38. Which of the following is a component in a passive optical network? a. Optical attenuator b. Optical eye-to-eye coupler c. Grid isolation hub d. All of the above 39. What is the purpose of an optical filter? a. Reduces crosstalk b. Reduces attenuation c. Selectively permits transmission or blocks a range of wavelengths d. All of the above 40. Which of the following are passive optical network configurations? a. Fiber to the home b. Fiber to the building c. Fiber to the node d. All of the above 41. Which of these cable types is not part of a FTTX PON? a. Drop cable b. Patch cable c. Distribution cable d. Feeder cable

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NT1310 Physical Networking

42. Which of the following specifications are specifically for installations? a. Pull Strength b. Bend Radius c. Tensile Rating d. All of the above 43. Which tools would be useful in the installation of fiber-optic cable? a. Patch Panel b. Pulling eye c. Pull box d. All of the above 44. Which of the following is not an advantage of using optical fiber over copper? a. High bandwidth b. Lower cost c. Better security d. Lighter weight 45. What effect does EMI have on fiber-optic cabling? a. Small increase in crosstalk b. Moderate attenuation c. Decreased insulation leading to light leakage d. None of the above 46. What can a visual fault locator help you determine? a. Identify breaks in the optical fiber b. Identify macrobends in the optical fiber c. Identify poor fusion splices d. All of the above 47. What other tool do you need when working with an optical power meter? a. Fiber identifier b. Visual fault locator c. Test jumper d. Light source 48. When documenting the results of your Optical Time-Domain Reflectometer (OTDR), what should you include? a. The number or identification of the fiber or cable tested b. The test procedure number c. Pulse width d. All of the above

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NT1310 Physical Networking

49. When inspecting a connector, what tools would be useful? a. Inspection microscope b. Wire cutters c. Crimper d. All of the above 50. When troubleshooting a problem and attempting restoration on an optical fiber cable, what questions should you ask the customer? a. What do they believe the problem is? b. When do they believe the problem first occurred? c. What was the last thing done to the system? d. All of the above

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NT1310 Physical Networking