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CCIE Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. An SPF calculation for which a router does not need to run SPF for any LSAs inside its area - but instead runs a very simple algorithm for changes to LSAs outside its own area.






2. A table used by CEF that holds information about adjacent IP hosts to which packets can be forwarded.






3. A strategy for subnetting a classful network for which masks/prefixes are different for some subnets of that one classful network.






4. The range 232.0.0.0 through 232.255.255.255 that is allocated by IANA for SSM destination addresses and is reserved for use by source-specific applications and protocols.






5. Operation - Administration - and Maintenance.






6. The process - defined by FRF.5 and FRF.8 - for combining ATM and FR technologies for an individual VC.






7. A name used for DS3 lines inside the European TDM hierarchy.






8. An optional transitive BGP path attribute that - for a summary route - lists the BGP RID and ASN of the router that created the summary.






9. An IPv6/IPv4 tunneling method that is designed for transporting IPv6 packets within a site where a native IPv6 infrastructures is not available.






10. A BGP router in an AS that uses route reflectors - but that is not aided by any RR server.






11. An IOS feature in which multiple routing tables and routing forwarding instances exist in a single router - with interfaces being assigned to one of the several VRFs. This feature allows separating of routing domains inside a single router platform.






12. Another name for 802.1Q-in-Q. See 802.1Q-in-Q.






13. A Cisco IOS queuing tool that uses MQC configuration commands and reserves a minimum bandwidth for each queue.






14. In MPLS VPNs - an entity in a single router that provides a means to separate routes in different VPNs. The VRF includes per-VRF instances of routing protocols - a routing table - and an associated CEF FIB.






15. Challenge Handshake Authentication Protocol.






16. A message sent by the multicast router - by default every 60 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






17. A protocol - defined in RFC 2865 - that defines how to perform authentication between an authenticator (for example - a router) and an authentication server that holds a list of usernames and passwords.






18. A BGP neighbor state in which the BGP neighbors have stabilized and can exchange routing information using BGP Update messages.






19. Weighted fair queuing.






20. The PPP function for fragmenting packets - plus interleaving delay-sensitive later-arriving packets between the fragments of the first packet.






21. A NAT term describing the process of multiplexing TCP and UDP flows - based on port numbers - to a small number of public IP addresses. Also called NAT overloading.






22. Edge LSR.






23. Message sent by a PIM-DM router to a downstream router when it receives a Graft message from the downstream router; sent using the unicast address of the downstream router.






24. Aka receiver's advertised window.






25. Cisco IOS IP Service Level Agent feature. Provides for router-generated information useful for verifying network performance on a scheduled basis - and the associated reporting functions.






26. Link-State Update.






27. Bipolar 8 Zero Substitution. A serial-line encoding standard that substitutes Bipolar Violations in a string of eight binary 0s to provide enough signal transitions to maintain synchronization.






28. WRED compares this setting to the average queue depth to decide whether packets should be discarded. No packets are discarded if the average queue depth falls below this minimum threshold.






29. This term has two BGP-related definitions. First - it is the normal process in which a router - before sending an Update to an eBGP peer - adds its local ASN to the beginning of the AS_PATH path attribute. Second - it is the routing policy of purpose






30. The same thing as TCP code bits. See TCP code bits.






31. A contiguous group of data links that share the same OSPF area number.






32. Receivers subscribe to an (S -G) channel when they request to join a multicast group. That is - they specify the unicast IP address of their multicast source and the group multicast address. SSM is typically used in very large multicast deployments s






33. A DiffServ PHB - based on DSCP EF (decimal 46) - that provides low-latency queuing behavior as well as policing protection to prevent EF traffic from starving queues for other types of traffic.






34. Each 802.11 station passively monitors each RF channel for a specific amount of time and listens for beacons. Stations use the signal strengths of found beacons to determine the access point or ad hoc network with which to attempt association.






35. A message sent by a router - after receiving a Leave message from a host - to determine whether there are still any active members of the group. The router uses the group address as the destination address.






36. A message sent by each host - either in response to a router query or on its own - to all multicast groups for which it would like to receive multicast traffic. The destination address on the Report is 224.0.0.22 - and a host can specify the source a






37. Message Digest 5.






38. Label Distribution Protocol.






39. An MQC-based feature of IOS that is used to classify and mark packets for QoS purposes.






40. A Cisco 12000 series router feature that combines the key features of LLQ and CQ to provide similar congestion-management features.






41. A process on a computing device that accepts SNMP requests - responds with SNMP-structured MIB data - and initiates unsolicited Trap messages back to an SNMP management station.






42. A PPP feature used to load balance multiple parallel links at Layer 2 by fragmenting frames - sending one frame over each of the links in the bundle - and reassembling them at the receiving end of the link.






43. Inside telcos' original TDM hierarchy - a unit that combines multiple DS0s into a single channel






44. The IEEE standardized protocol for VLAN trunking.






45. An optional contention-free 802.11 access protocol that requires the access point to poll wireless stations before they are able to send frames. Not commonly implemented.






46. An OSPF external route for which internal OSPF cost is not added to the cost of the route as it was redistributed into OSPF.






47. A logical group of content engines running WCCP between them. The lead content engine determines the traffic distribution within the cluster - for optimum performance and scalability.






48. EIGRP jargon meaning that EIGRP has placed a route into active status.






49. An STP timer that dictates how long a switch should wait when it ceases to hear Hellos.






50. A wireless LAN physical layer that operates at up to 11-Mbps data rates using DSSS in the 2.4-GHz band.