reveiw q4 copy.docx

1. **Which of the following is a common characteristic of a networking medium? (Choose all that apply.)** 1. Bandwidth rating 2. Interference susceptibility 3. Broadband rating 4. Maximum segment length 2. **Which of the following types of fiber-optic connectors provid...

1. **Which of the following is a common characteristic of a networking medium? (Choose all that apply.)** 1. Bandwidth rating 2. Interference susceptibility 3. Broadband rating 4. Maximum segment length 2. **Which of the following types of fiber-optic connectors provides high density and requires only one connector for two cables?** 5. SC 6. ST 7. MT-RJ 8. RJ-45 3. **Which of the following conditions requires cables not to exceed a recommended maximum length?** 9. Diminution 10. Capacitance 11. Bandwidth 12. Attenuation 4. **Which of the following is the process for representing bit signals on the medium?** 13. Encryption 14. Encoding 15. Decryption 16. Decoding 5. **What happens to signals as they travel the length of the medium?** 17. They decode. 18. They amplify. 19. They attenuate. 20. They implode. 6. **Which of the following is UTP susceptible to? (Choose all that apply.)** 21. EMI 22. Crosstalk 23. Signal enhancement 24. LEDs 7. **The space between a false ceiling and the true ceiling where heating and cooling air circulates is called the .** 25. Duct-equivalent airspace 26. Conduit 27. Return air 28. Plenum 8. **What type of connector is used most commonly with TP network wiring?** 29. RJ-11 30. RJ-45 31. BNC 32. MT-RJ 9. **You have been hired to install a network at a large government agency that wants to reduce the likelihood of electronic eavesdropping on its network. What type of cable is most resistant to eavesdropping?** 33. UTP 34. STP 35. Coaxial 36. Fiber optic 10. **Which of the following is a characteristic of unshielded twisted-pair cable? (Choose all that apply.)** 37. Consists of four wires 38. Commonly used in physical bus topologies 39. Has a distance limitation of 100 meters 40. Is susceptible to electrical interference 11. **Which of the following is a characteristic of fiber-optic cabling? (Choose all that apply.)** 41. Can be used in electrically noisy environments 42. Requires only a single strand of fiber for network connections 43. Carries data over longer distances than UTP 44. Has low bandwidth 12. **You're preparing to install a conventional Ethernet network in your new office building, but your boss tells you to be ready to handle a switchover to 1 Gbps Ethernet next year. What types of cable could you install? (Choose all that apply.)** 45. Cat 5 46. Fiber optic 47. Cat 4 48. Cat 6 49. Coax 13. **When two cables run side by side, signals traveling down one wire might interfere with signals traveling on the other wire. What is this phenomenon called?** 50. RFI 51. Attenuation 52. Impedance 53. Crosstalk 14. **What characteristic of twisted-pair cabling helps mitigate the effects of crosstalk?** 54. Differential signals 55. Copper conductors 56. Four pairs of wires 57. 100-ohm impedance 15. **Which cabling category is specified for 25GBaseT and 40GBaseT networks?** 58. Cat 6a 59. Cat 7 60. Cat 7a 61. Cat 8 16. **Which of the following is a wiring standard for twisted-pair cable connections? (Choose all that apply.)** 62. IEEE 802.3a 63. TIA/EIA 568A 64. IEEE 802.3b 65. TIA/EIA 568B 17. **Which of the following is a component of a structured cabling system? (Choose all that apply.)** 66. Patch cables 67. RJ-11 plugs 68. Coax cable 69. Horizontal wiring 18. **Where are you most likely to find backbone cabling? (Choose all that apply.)** 70. MDF 71. In the work area 72. Between IDFs 73. Connecting a work area to an IDF 19. **Which of the following is a tool needed to make a patch cable? (Choose all that apply.)** 74. 110 punchdown tool 75. Cable stripper 76. Crimping tool 77. RJ-45 jack 20. **Which type of connection is most likely to require a crossover cable?** 78. PC to hub 79. Hub to router 80. Router to switch 81. PC to router 21. **Which UTP limitations can be solved by fiber-optic cable? (Choose all that apply.)** 82. Bandwidth 83. EMI susceptibility 84. Installation cost 85. Segment length 22. **How many strands of fiber-optic cable are typically used for a network connection?** 86. 1 87. 2 88. 4 89. 8 23. **Which statement is true about fiber-optic cables?** 90. MMF uses lasers and has a thicker core. 91. SMF uses lasers and has a thinner core. 92. MMF uses LEDs and has a thinner core. 93. SMF uses LEDs and has a thicker core. 24. **When might you want to use a rollover cable?** 94. To connect a PC to another PC 95. To connect a router to a switch 96. To add a switch to a LAN 97. To configure a Cisco device 25. **Which of the following wireless technologies does the original 802.11b wireless standard use?** 98. Infrared 99. Narrowband radio 100. Frequency hopping 101. Direct-sequence spread spectrum