The correct answers are a and d. Layer 2 (Data Link layer) handles frames across the physical medium. Answer b is incorrect, because bits are transferred at layer 1 (Physical layer) of the OSI model. Answer c is incorrect, because layer 3 (Network layer) is commonly known as packets. | 12 Answer Key 1. a d 21. d 41. d 61. b 81. a b c d f h j 2. b 22. b 42. c 62. a b c 82. b 3. b c 23. d 43. a 63. f 83. b d 4. b 24. b 44. c 64. c d 84. a 5. b 25. b 45. b 65. e 85. b d e 6. e 26. e 46. d 66. a b d 86. d 7. b 27. d 47. c 67. e 87. a 8. b 28. c 48. b 68. c 88. a 9. d 29. d 49. b 69. a 89. e 10. c 30. c 50. a d 70. a c e 90. d 11. b 31. c 51. a b 71. d 91. c 12. b 32. d 52. c 72. d 92. a 13. d 33. e 53. c 73. c 93. a 14. a 34. b c d 54. c 74. d 94. b c 15. c 35. c 55. b c d f 75. c 95. a c d 16. c 36. b 56. e 76. d 96. a c d 17. b 37. a 57. b 77. d 97. b d 18. c d 38. d 58. a 78. c 98. a 19. a 39. a 59. c 79. a 99. b 20. a b c 40. d 60. e 80. e 100. d 1 2 Chapter 12 Question 1 The correct answers are a and d. Layer 2 Data Link layer handles frames across the physical medium. Answer b is incorrect because bits are transferred at layer 1 Physical layer of the OSI model. Answer c is incorrect because layer 3 Network layer is commonly known as packets. Question 2 The correct answer is b. To enable RIP routing you issue the router rip global command. By default a Cisco router will send only RIP version I packets but will listen for RIP I and RIP II. Therefore if you only configure RIP I then RIP II packets will also be received and placed in the routing table but they will not be advertised by RIP. If you enable RIP II with the version 2 command then you ll only send and receive RIP II packets. Answer a is incorrect because router-rip is an invalid IOS command. Answer c is incorrect because the version 2 command is only applicable to the interface and does not satisfy the question. Answer d is incorrect because ip rip version 2 is an invalid IOS command. Answer e is incorrect because answer a is an invalid IOS command. Question 3 The correct answers are b and c. The unique bridge .
