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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 MPLS data structure used for forwarding labeled packets. The LFIB lists the incoming label - which is compared to the incoming packet's label - along with forwarding instructions for the packet.






2. The multicast addresses assigned by IANA.






3. Virtual Routing and Forwarding table.






4. In PIM-SM - the path of the group traffic that flows from the RP to the routers that need the traffic. It is also called the root-path tree (RPT) - because it is rooted at the RP.






5. Authentication - authorization - and accounting.






6. The process of successive neighboring routers exchanging LSAs such that all routers have an identical LSDB for each area to which they are attached.






7. A mechanism in which VLAN information can extend over another set of 802.1Q trunks by tunneling the original 802.1Q traffic with another 802.1Q tag. It allows a service provider to support transparent VLAN services with multiple customers - even if t






8. 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.






9. Enhanced Local Management Interface.






10. Virtual circuit.






11. Defined in RFC 3748 - the protocol used by IEEE 802.1X for exchanging authentication information.






12. A BGP router that - unknown to it - is aided by a route reflector server to cause all iBGP routers in an AS to learn all eBGP-learned prefixes.






13. An OSPF timer that determines how long an LSA can remain in the LSDB without having heard a reflooded copy of the LSA.






14. Alarm Indication Signal. With T1s - the practice of sending all binary 1s on the line in reaction to problems - to provide signal transitions and allow recovery of synchronization and framing.






15. A mechanism used by TCP senders to limit the dynamic window for a TCP connection - to reduce the sending rate when packet loss occurs. The sender considers both the advertised window size and CWND - using the smaller of the two.






16. From one perspective - DTE devices are one of two devices on either end of a communications circuit - specifically the device with less control over the communications. In Frame Relay - routers connected to a Frame Relay access link are DTE devices.






17. An FRF standard for payload compression.






18. Designed to solve the problems of multicast duplication and multicast routing loops. For every multicast packet received - a multicast router examines its source IP address - consults its unicast routing table - determines which interface it would us






19. Reverse ARP.






20. A Cisco-proprietary messaging protocol used to negotiate the dynamic creation of PortChannels (EtherChannels) and to choose which ports can be placed into an EtherChannel.






21. An MPLS term referring to any device that can forward packets that have MPLS labels.






22. A single instance of STP that is applied to multiple VLANs - typically when using the 802.1Q trunking standard.






23. Neighbor Solicitation.






24. The RMON function of sending a notification to an RMON collector or the console. Triggered by an RMON event.






25. Aka Rapid Per-VLAN Spanning Tree Plus.






26. Version 4 of the IP protocol - which is the generally deployed version worldwide (at publication) - and uses 32-bit IP addresses.






27. Aka minimum CIR.






28. An Internet standard serial data-link protocol - used on synchronous and asynchronous links - that provides data-link framing - link negotiation - Layer 3 interface features - and other functions.






29. Shaped round-robin.






30. The range 233.0.0.0 through 233.255.255.255 that IANA has reserved (RFC 2770) on an experimental basis. It can be used by anyone who owns a registered autonomous system number to create 256 global multicast addresses.






31. A switch feature with which the switch watches ARP messages - determines if those messages may or may not be part of some attack - and filters those that look suspicious.






32. A term used with Cisco LAN switches - referring to a DSCP value used when making QoS decisions about a frame. This value may not be the actual DSCP value in the IP header encapsulated inside the frame.






33. The IP address to which Label Distribution Protocol (LDP) sends LDP Hellos. Also used in IP multicast to send packets to all multicast routers.






34. Internet Group Management Protocol.






35. On a single computer - one layer provides a service to a higher layer. The software or hardware that implements the higher layer requests that the next lower layer perform the needed function.






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






37. A name used for DS1 lines inside the North American TDM hierarchy.






38. Aka network layer reachability information.






39. On a serial cable - the pin lead set by the DTE to imply that the DTE is ready to signal using pin leads.






40. Controls access to the Internet in public wireless LANs.






41. A state for a route in an EIGRP topology table that indicates that the router is actively sending Query messages for this route - attempting to validate and learn the current best route to that subnet.






42. Multicast Open Shortest Path First.






43. Neighbor Advertisement.






44. Frame Relay Forum.






45. With EIGRP - the metric value for the lowest-metric route to a particular subnet.






46. Label switched path.






47. The process of changing the electrical characteristics on a transmission medium - based on defined rules - to represent data.






48. Sequence number.






49. The operating mode of shaped round-robin that provides behavior like CBWFQ with bandwidth allocated between different traffic classes by a relative amount rather than absolute percentage of the available bandwidth.






50. Cisco Group Management Protocol.