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CCIE Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Records client authentication and roaming events - which are sent to the CiscoWorks Wireless LAN Solution Engine (WLSE) to monitor client associations to specific access points.






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






3. With RIP - a per-route timer that increases until the router receives a routing update that confirms the route is still valid - upon which the timer is reset to 0. If the updates cease - the Invalid timer will grow - until reaching the timer setting






4. Spanning Tree Protocol.






5. Jargon referring to any queue that receives priority service - often used for queues in an LLQ configuration that have the priority command configured.






6. With shaping - the number of bits allowed to be sent every Tc. Also defines the size of the token bucket when Be = 0.






7. Jargon used to refer to the second of two buckets in the dual token bucket model; its size is Be.






8. Alternate Mark Inversion. A serial-line encoding standard that sends alternating positive and negative 3-volt signals for binary 1 - and no signal (0 V) for binary 0.






9. The rate at which a shaper limits the bits exiting the shaper.






10. Network Layer Protocol ID is a field in the RFC 2427 header that is used as a Protocol Type field in order to identify the type of Layer 3 packet encapsulated inside a Frame Relay frame.






11. 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.






12. A single label and link that is part of a complete LDP. See also label switched path.






13. A convention for IP addresses in which class A - B - and C default network prefixes (of 8 - 16 - and 24 bits - respectively) are ignored.






14. Weighted random early detection.






15. 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.






16. Method by which a dense-mode routing protocol distributes multicast traffic from a source to all the segments of a network. Also called shortest-path tree (SPT) - because it uses the shortest routing path from the source to the segments of the networ






17. A Cisco-proprietary messaging protocol implemented in WAN switches that can be used to signal network status - including congestion - independent of end-user frames and cells.






18. Network Address Translation.






19. 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.






20. Sent by a PIM router to its upstream router to either request that the upstream router forward the group traffic or stop forwarding the group traffic that is currently being forwarded. If a PIM router wants to start receiving the group traffic - it l






21. Multilayer Switching.






22. The mandatory contention-based 802.11 access protocol that is also referred to as CSMA/CA.






23. 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.






24. Often used synonymously with neighbor - but with emphasis on the fact that all required parameters match - allowing routing updates to be exchanged between the routers.






25. In the context of SNMP - the Trap command is sent by an SNMP agent - to a manager - when the agent wants to send unsolicited information to the manager. Trap is not followed by a Response message from the receiving SNMP manager.






26. Layer x PDU.






27. Smoothed Round-Trip Time.






28. An EIGRP message that is used to ask neighboring routers to verify their route to a particular subnet. Query messages require an Ack.






29. An MPLS VPN term referring to the more efficient choice of popping the outer label at the second-to-last (penultimate) LSR - which then prevents the egress PE from having to perform two LFIB lookups to forward the packet.






30. A BGP path attribute that is communicated throughout a single AS to signify which route of multiple possible routes is the best route to be taken when leaving that AS. A larger value is considered to be better.






31. A conceptual model used by CB Policing when using an excess burst.






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






33. A dotted-decimal number that represents a subnet. It is the lowest numeric value in the range of IP addresses implied by a subnet number and prefix/mask.






34. An OSPF router that connects to the backbone area and to one or more non-backbone area.






35. An NTP client that assumes that a server will send NTP broadcasts - removing the requirement for the client to have the NTP server's IP address preconfigured.






36. In MPLS - a term used to define a label that an LSR allocates and then advertises to neighboring routers. The label is considered "local" on the router that allocates and advertises the label.






37. A BGP path attribute that allows routers in one AS to set a value and advertise it into a neighboring AS - impacting the decision process in that neighboring AS. A smaller value is considered better. Also called the BGP metric.






38. 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






39. 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.






40. Sent by a PIM router - by default every 30 seconds - on every interface on which PIM is configured to discover neighbors - establish adjacency - and maintain adjacency.






41. Forward Explicit Congestion Notification.






42. A prestandard (at the time of publication) wireless LAN physical layer that offers data rates in the hundreds of megabits per second.






43. The command used to initialize a SPAN or RSPAN session on a Catalyst switch.






44. An event in which a new packet arrives - needing to be placed into a queue - and the queue is full






45. Protocol data unit.






46. Source-specific multicast.






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






48. With EIGRP - a route that is not a successor route - but that meets the feasibility condition; can be used when the successor route fails - without causing loops.






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






50. An NTP mode in which two or more NTP servers mutually synchronize their clocks.







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