Test your basic knowledge |

Subjects : cisco, it-skills, ccnp
  • Answer 50 questions in 15 minutes.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What are the administrative distances of eBGP and iBGP?

2. Explain how the multicast routing table is populated.

3. What type of protocol is BGP classified as? What is its decision engine?

4. Explain the path selection process for BGP? What is the order and what preference does it take?

5. What entities are responsible for allocating BGP AS numbers?

6. What command used to perform the following:<br />A) Reset all neighbors session ('bounce')<br />B) Soft inbound reset<br />C) Soft outbound reset<br />D) Soft inbound reset of neighbor<br /><br />R1# clear ip bgp <br />R1# clear ip bgp soft

7. Name 6 multicast routing protocols.

8. Describe how PIM-SM operates.

9. What is one method involving minimal configuration to prevent and multi-homed BGP network from becoming a transit AS?

10. State how IGMPv1 operates.

11. What does PIM use for its multicast routing calculations?

12. How does Source and Shared Distribution Tree models related to PIM-DM and PIM-SM?

13. Name what an update message may include.

14. What advantage does multicast offer?

15. What are three different common ways to perform BGP multihoming with regard to routing table?

16. What is a BGP black hole and how is it avoided?

17. State 3 functions SDR performs?

18. What is the BGP Synchronization requirement and What does is prevent? When should it be left disabled? When should it be enabled?

19. What effect will placing a route to null0 have on BGP?

20. What is the significance of an AS being a transit AS?

21. What are the two multicast distribution tree types models and differences?

22. Name the Well-known mandatory attributes.

23. What are some of the obstacles with IGMP and multicast in general as it relates to layer 2/switches?

24. Explain the relationship between MBone - DVMRP - PIM - IGMP - CGMP hosts - routers and switches?

25. Explain the concept of RPF.

26. What command is used to override the Next-Hop attribute of BGP? What does this do and when would you use this?

27. Describe how PIM-DM operates.

28. What does BGP use for communication? What advantage does it offer?

29. What special consideration is there when peering to a eBGP neighbor using a loopback? What is the solution to this?

30. Explain the Next-Hop attribute. How does this differ from IGP's? In what environment might this be problematic?

31. What is the significance of the 8th bit in the MAC address?

32. What is the full mesh versus partial mesh IBGP and What are the implications of each?

33. What is one mechanism that GURANTEES the BGP AS path is loop free?

34. How does a host learn about available multicast streams?

35. What are the 4 BGP packet types? What do they contain?

36. Describe how and IGMPv2 host leaves. What is the interaction between host and router look like?

37. When creating a BGP neighbor relationship to a loopback interface what must be remember in the context of routing?

38. What does the 'maximum-paths router' command facilitate?

39. What is the command to enable BPG authentication?

40. Name several common local scoped multicast addresses and their purpose.

41. What config would be used to configured an outbound BGP distribute list to block all routes from being advertised except ones from /24 network to neighbors and

42. What is the command to configure a BGP RR?

43. What is the multicast IP address space?

44. How is the BGP network command differ from IGP's?

45. IOS command to configure router to be a member of an IGMP group or statically connected member.

46. Explain the contents of the BGP update message.

47. What is the solution to establishing neighbor relationships when multiple paths exist? What are the command to establish this? What command to tell R1 to use its loopback0 interface as the update source neighbor

48. What is the command to configure a BGP RR?<br />

49. IOS command to configure a rendezvous point .

50. Explain the MED attribute.