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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. 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.






2. A Cisco-proprietary LMI protocol - implemented in Cisco WAN switches and routers - through which the switch can inform the router about parameters for each VC - including CIR - Bc - and Be.






3. A router that should either permanently or temporarily not be used as a transit router. Can wait a certain time after OSPF process start - or after BGP notifies OSPF that BGP has converged - before ceasing to be a stub router.






4. The operating mode of shaped round-robin that provides a low-latency queue with policing.






5. A characterization of a BGP path attribute in which all BGP implementations must support and understand the attribute (well known) - but BGP Updates can either include the attribute or not depending on whether a related feature has been configured (d






6. An SPF calculation as a result of changes inside the same area as a router - for which the SPF run must examine the full LSDB.






7. Network Address Translation-Protocol Translation.






8. Used by WRED to calculate the rate at which the average queue depth changes as compared with the current queue depth. The larger the number - the slower the change in the average queue depth.






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






10. Area Border Router. An OSPF router that connects to the backbone area and to one or more non-backbone areas.






11. In TCP - a TCP host sets the TCP header's Window field to the number of bytes it allows the other host to send before requiring an acknowledgement. In effect - the receiving host - by stating a particular window size - grants the sending host the rig

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12. Any other router - sharing a common data link - with which a router exchanges Hellos - and for which the parameters in the Hello pass the parameter-check process.






13. The difference between the measured signal power and the noise power that a particular receiver sees at a given time. Higher SNRs generally indicate better performance.






14. With DiffServ - a DSCP marking and a related set of QoS actions applied to packets that have that marking.






15. The process of taking routes known through one routing protocol and advertising those routes with another routing protocol.






16. Per-Hop Behavior.






17. A mapping between each DSCP value and a WRED threshold - often used in Cisco LAN switches when performing WRED.






18. Layer x PDU.






19. The 802.1X driver that supplies a username/password prompt to the user and sends/receives the EAPoL messages.






20. With RIP - the regular interval at which updates are sent. Each interface uses an independent timer - defaulting to 30 seconds.






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






22. Defined in IEEE 802.1s - a specification for multiple STP instances when using 802.1Q trunks






23. VLAN Trunking Protocol.






24. 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.






25. The practice of defining boundaries that determine how far multicast traffic will travel in your network.






26. Removing unwanted VLANs from a Layer 2 path.






27. The content engine in a WCCP cluster - which determines how traffic will be distributed within the cluster.






28. A category used by a policer to classify packets relative to the traffic contract. With two-color policers - these packets are considered to be above the contract; for three-color - these packets are above the Bc setting - but within the Be setting.






29. A BGP term referring to an IP prefix and prefix length.






30. A message sent by a host when it wants to leave a group - addressed to the All Multicast Routers address 224.0.0.2.






31. Backward Explicit Congestion Notification.






32. Point-to-Point Protocol.






33. The process of taking the payload inside a Layer 2 frame - including the headers of Layer 3 and above - compressing the data - and then uncompressing the data on the receiving router.






34. 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






35. The information maintained by a router for each multicast entry in its multicast routing table - such as incoming interface - outgoing interface list - Uptime timer - Expire timer - etc.






36. A BGP process by which a router reapplies routing policy configuration (route maps - filters - and the like) based on stored copies of sent and received BGP Updates.






37. A subset of a classful IP network - as defined by a subnet mask - which used to address IP hosts on the same Layer 2 network in much the same way as a classful network is used.






38. The combination of PVST+ and Rapid Spanning Tree. It provides subsecond convergence time and is compatible with PVST+ and MSTP.






39. Expedited Forwarding.






40. A set of QoS RFCs that redefines the IP header's ToS byte - and suggests specific settings of the DSCP field and the implied QoS actions based on those settings.






41. Data Carrier Detect.






42. The portion of PPP focused on supporting the CDP protocol.






43. A queuing scheduler concept - much like CQ's scheduler - in which queues are given some service in sequence. This term is often used with queuing in Cisco LAN switches.






44. 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.






45. Defines a particular wireless LAN. The SSID configured in the radio card must match the SSID in the access point before the station can connect with the access point.






46. Orthogonal frequency division multiplexing.






47. An Internet standard authentication protocol that uses secure hashes and a three-way handshake to perform authentication over a PPP link.






48. Shaped round-robin.






49. Management Information Base.






50. An MPLS VPN term referring to a router at a customer site that does not implement MPLS.