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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. Sent by a PIM-DM or PIM-SM router when it receives a multicast packet for a group on a LAN interface that is in the outgoing interface list for the group; includes the administrative distance of the unicast routing protocol used to learn the network






2. A method for how a TCP sender grows its calculated CWND variable - thereby growing the allowed window for the connection. Congestion Avoidance grows CWND linearly.






3. The destination VLAN for an RSPAN session.






4. Timer An STP timer that dictates how long a port should stay in the listening state and the learning state.






5. Direct sequence spread spectrum.






6. The multicast IP address 224.0.0.6 - listened for by DR and BDR routers.






7. An MPLS term describing designs in which one or more MPLS customer sites can be reached from multiple other VPNs.






8. A 3-bit field in an 802.1Q header used for marking frames.






9. A NAT term describing an IP address representing a host that resides outside the enterprise network - with the address being used in packets outside the enterprise network.






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






11. Weighted round-robin.






12. A 48-bit address that is calculated from a Layer 3 multicast address by using 0x0100.5E as the multicast vendor code (OUI) for the first 24 bits - always binary 0 for the 25th bit - and copying the last 23 bits of the Layer 3 multicast address.






13. The original MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. It is slightly different from LDP - but functionally equivalent. See also LDP.






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






15. A well-known discretionary BGP path attribute that flags a route as being a summary route.






16. Also called VLAN trunking - a method (using either the Cisco ISL protocol or the IEEE 802.1Q protocol) to support carrying traffic between switches for multiple VLANs that have members on more than one switch.






17. In SNMP - the process of a manager using successive GetNext and GetBulk commands to discover the exact MIB structure supported by an SNMP agent. The process involves the manager asking for each successive MIB leaf variable.






18. IP routing The simplest MPLS application - involving the advertisement of an IGP to learn IP routes - and LDP or TDP to advertise labels.






19. A problem that occurs when an AS does not run BGP on all routers - with synchronization disabled. The routers running BGP may believe they have working routes to reach a prefix - and forward packets to internal routers that do not run BGP and do not






20. Modular QoS CLI.






21. In IPv6 - the Neighbor Discovery message used by an IPv6 node to send information about itself to its neighbors.






22. The speed at which the access link is clocked. This choice affects the price of the connection and many aspects of traffic shaping and policing - compression - quality of service - and other configuration options.






23. A Cisco IOS configuration tool that can be used to match routing updates based on a base network address - a prefix - and a range of possible masks used inside the values defined by the base network address and prefix.






24. Low-latency queuing.






25. 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.






26. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised to any other peer.






27. Autonomous System Boundary Router. An OSPF router that redistributes routes from some other source into OSPF.






28. Link Aggregation Control Protocol.






29. A dotted-decimal number used to help define the structure of an IP address. The binary 0s in the mask identify the host portion of an address - and the binary 1s identify either the combined network and subnet part (when thinking classfully) or the n






30. An IPv6 address format used for publicly registered IPv6 addresses.






31. A type of OSPF stub area for which neither external (type 5) LSAs are introduced - nor type 3 summary LSAs; instead - the ABRs originate and inject default routes into the area. External routes cannot be injected into a totally stubby area.






32. 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.






33. Diffusing Update Algorithm.






34. Data Set Ready.






35. The specific frequency subband on which the radio card or access point is operating. The RF channel is set in the access point or ad hoc stations.






36. An EIGRP message that is used to acknowledge reliable EIGRP messages - namely Update - Query - and Reply messages. Acks do not require an Ack.






37. A method of obtaining an IPv6 address that uses DHCPv6. See also stateless autoconfiguration.






38. Wired Equivalent Privacy.






39. The MD5-encoded password defined by the enable secret command.






40. Data Terminal Ready.






41. Class-Based Weighted Fair Queuing.






42. A WRED process by which WRED discards all newly arriving packets intended for a queue - based on whether the queue's maximum threshold has been exceeded.






43. The multicast addresses assigned by IANA.






44. An exterior routing protocol that predates BGP. It is no longer used today.






45. A method of applying a mathematical formula - with input including a private key - the message contents - and sometimes a shared text string - with the resulting digest being included with the message. The sender and the receiver perform the same mat






46. An optional nontransitive BGP path attribute that lists the route reflector cluster IDs through which a route has been advertised - as part of a loop-prevention process similar to the AS_PATH attribute.






47. A term referring generically to a server that performs many AAA functions. It also refers to the software product Cisco Secure Access Control Server.






48. A calculation of the length of the AS_PATH PA - which includes 1 for each number in the AS_SEQ - 1 for an entire AS_SET segment - and possibly other considerations.






49. An early T1 framing standard.






50. An EIGRP message that is used by a router to notify its neighbors when the router is gracefully shutting down.