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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. In MPLS - a term used to define a label that an LSR learned from a neighboring LSR.






2. 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.






3. In shaping and policing - the definition of parameters that together imply the allowed rate and bursts.






4. 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.






5. Any occurrence that could change a router's EIGRP topology table - including a received Update or Query - a failed interface - or the loss of a neighbor.






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






7. A possible side effect of a scheduler that performs strict-priority scheduling of a queue - which can result in lower-priority queues getting little or no service.






8. A Cisco IOS queuing tool most notable for its reservation of a minimum bandwidth for each queue.






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






10. An IEEE standard that - when used with EAP - provides user authentication before their connected switch port allows the device to fully use the LAN.






11. The portions of PPP focused on features that are related to specific Layer 3 protocols.






12. The ASN assigned to a confederation sub-AS.






13. Frequency hopping spread spectrum.






14. Challenge Handshake Authentication Protocol.






15. The single port on each nonroot switch upon which the best Hello BPDU is received.






16. A queuing tool's logic by which it selects the next packet to dequeue from its many queues.






17. The 802.1X function implemented by a switch - in which the switch translates between EAPoL and RADIUS messages in both directions - and enables/disables ports based on the success/failure of authentication.






18. Provides dynamic inspection of traffic as it traverses the router. It uses Context-Based Access Control (CBAC) to look deeper into a packet than an access list can. It tracks outbound traffic and dynamically allows in responses to that traffic.






19. A message sent by a multicast router - by default every 125 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






20. A process used in routers that are encrypting traffic to permit egress QoS actions to be taken on traffic that is being encrypted on that router. QoS pre-classification keeps a copy of each packet to be encrypted in memory long enough to take the app






21. An early standard from AT&T for encoding analog voice as a digital signal for transmission over a TDM network. PCM requires 64 kbps - and is the basis for the DS0 speed.






22. 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.






23. Network Control Protocol.






24. 16 bits between the interface ID and global routing prefix in an IPv6 global address - used for subnet assignment inside an enterprise.






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






26. The structure inside telcos' original digital circuit build-out in the mid-1900s - based upon using TDM to combine and disperse smaller DS levels into larger levels - and vice versa.






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






28. A mechanism that counters collisions caused by hidden nodes. If enabled - the station or access point must first send an RTS frame and receive a CTS frame before sending each data frame.






29. An MPLS VPN term referring to any LSR that connects to customers to support the forwarding of unlabeled packets - as well as connecting to the MPLS network to support labeled packets - thereby making the LSR be on the edge between the provider and th






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






31. Multilayer Switching.






32. A list of interspersed alphanumeric literals and metacharacters that are used to apply complex matching logic to alphanumeric strings. Often used for matching AS_PATHs in Cisco routers.






33. A strategy for subnetting a classful network for which all masks/prefixes are the same value for all subnets of that one classful network.






34. Enhances RP redundancy by providing a method for RPs to exchange multicast source information - even between multicast domains.






35. Network Address Translation-Protocol Translation.






36. With OSPF - the OSPF router that wins an election amongst all current neighbors. The DR is responsible for flooding on the subnet - and for creating and flooding the type 2 LSA for the subnet.






37. In BGP - a configuration construct in which multiple neighbors' parameters can be configured as a group - thereby reducing the length of the configuration. Additionally - BGP performs routing policy logic against only one set of Updates for the entir






38. An 802.1w RSTP port state in which the port is an alternative Designated Port on some LAN segment.






39. A WFQ term referring to its drop logic - which is similar to tail-drop behavior.






40. Modular QoS CLI.






41. 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






42. A bit in the LAPF Frame Relay header that - when set to 1 - implies that the frame has experienced congestion.






43. Defined in RFCs 1517-1520 - a scheme to help reduce Internet routing table sizes by administratively allocating large blocks of consecutive classful IP network numbers to ISPs for use in different global geographies. CIDR results in large blocks of n






44. With PIM on a multiaccess network - the PIM router with the highest IP address on the subnet. It is also the IGMPv1 Querier. The DR is responsible for the following tasks: - Sending PIM register and PIM join and prune messages toward the RP to infor






45. Orthogonal frequency division multiplexing.






46. A route that is used for forwarding packets when the packet does not match any more specific routes in the IP routing table.






47. An 802.1d STP transitory port state in which the port does not send or receive frames - but does learn the source MAC addresses from incoming frames.






48. Maximum Segment Size.






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






50. The original standardized set of generic SNMP MIB variables - defined in RFC 1158.