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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. Orthogonal frequency division multiplexing.






2. A WRED process by which WRED does not discard packets during times in which a queue's minimum threshold has not been passed.






3. An FRF standard for Frame Relay-to-ATM Service Interworking in which one DTE uses Frame Relay and one uses ATM.






4. With EIGRP - for a particular route - the case in which the RD is lower than the FD.






5. With EIGRP - a timer started when a reliable (to be acknowledged) message is transmitted. For any neighbor(s) failing to respond in its RTO - the RTP protocol causes retransmission. RTO is calculated based on SRTT.






6. On a multiaccess network - when a PIM-DM or PIM-SM router receives a Prune message - it starts a 3-second timer. If it receives a Join message on the multiaccess network from another router before the timer expires - it considers the message as an ov






7. High Density Binary 3.






8. A BGP feature by which a router learns iBGP routes - and then forwards them to other iBGP peers - reducing the required number of iBGP peers while also avoiding routing loops.






9. An alternative software loaded into a Cisco router - used for basic IP connectivity; most useful when Flash memory is broken and you need IP connectivity to copy a new IOS image into Flash memory.






10. With routing protocols - the measurement of favorability that determines which entry will be installed in a routing table if more than one router is advertising that exact network and mask.






11. The Cisco IOS feature by which special short key sequences can be used to move the cursor inside the current command line to more easily change a command.






12. A term referring to the MQC policy-map command and its related subcommands - which are used to apply QoS actions to classes of packets.






13. From one multicast router's perspective - the upstream router is another router that has just forwarded a multicast packet to that router.






14. Authentication - authorization - and accounting.






15. The definitions for a particular set of data variables - with those definitions following the SMI specifications. See also SMI.






16. Distance Vector Multicast Routing Protocol.






17. Jargon referring to a policer action through which - instead of discarding an out-of-contract packet - the policer marks a different IPP or DSCP value - allowing the packet to continue on its way - but making the packet more likely to be discarded la






18. Used by a policer to classify packets relative to the traffic contract. These packets are considered to be above the traffic contract in all cases.






19. The router in a VRRP group that is currently actively forwarding IP packets. Conceptually the same as an HSRP Active router.






20. Another name for Superframe.






21. Policing in which a single rate is metered - and packets are placed into one of three categories (conform - exceed - or violate).






22. With EIGRP - a purposefully slowly changing measurement of round-trip time between neighbors - from which the EIGRP RTO is calculated.






23. Single-bit fields in the TCP header. For example - the TCP SYN and ACK code bits are used during connection establishment.






24. 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.






25. Aka receiver's advertised window.






26. With a routing update - or routing table entry - the portion of a route that defines the next router to which a packet should be sent to reach the destination subnet. With routing protocols - the Next Hop field may define a router other than the rout






27. An FRF standard for Frame Relay-to-ATM Service Interworking in which both DTEs use Frame Relay - with ATM in between.






28. A generic term that refers to the data structure used by a layer in a layered network architecture when sending data.






29. The same thing as TCP code bits. See TCP code bits.






30. Voice over Frame Relay.






31. 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.






32. With EIGRP - the route to each destination for which the metric is the lowest of all known routes to that network.






33. A term referring to EIGRP's internal processing logic.






34. A category used by a policer to classify packets relative to the traffic contract. The bit rate implied by all conforming packets is within the traffic contract.






35. Cisco-proprietary STP feature in which a switch port monitors for incoming superior Hellos - and reacts to a superior Hello to prevent any switch connected to that port from becoming root.






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






37. 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.






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






39. Forwarding Equivalence Class.






40. Enables a wireless client to securely roam between access points in the same subnet or between subnets with access point handoff times within 50 ms.






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






42. Layer x PDU.






43. Neighbor Discovery Protocol.






44. A protection against problems caused by unidirectional links between two switches. Uses messaging between switches to detect the loop - err-disabling the port when the link is unidirectional.






45. A routing protocol feature by which the routing update includes only routes that have changed - rather than include the entire set of routes.






46. A 3-bit field in an MPLS header used for marking frames.






47. The process of taking the IP - UDP - and RTP headers of a voice or video packet - compressing them - and then uncompressing them on the receiving router.






48. An IP variable that defines the largest size allowed in an IP packet - including the IP header. IP hosts must support an MTU of at least 576 bytes.






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






50. A type of OSPF packet used to acknowledge LSU packets.