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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. A communication protocol between hosts and a multicast router by which routers learn of which multicast groups' packets need to be forwarded onto a LAN.






2. Link-state database.






3. A Cisco IOS configuration tool for routing protocols by which routing updates may be filtered.






4. Class of Service.






5. A BGP neighbor state in which the BGP neighbors have stabilized and can exchange routing information using BGP Update messages.






6. A Cisco IOS feature that provides reporting information to a NetFlow aggregator based on traffic flows.






7. A multicast routing protocol that operates in dense mode and depends on the OSPF unicast routing protocol to perform its multicast functions.






8. 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.






9. The PPP function for fragmenting packets - plus interleaving delay-sensitive later-arriving packets between the fragments of the first packet.






10. Virtual LAN.






11. A numeric value between 0 and 32 (inclusive) that defines the number of beginning bits in an IP address for which all IP addresses in the same group have the same value. Alternative: The number of binary 1s beginning a subnet mask - written as a deci






12. Penultimate hop popping.






13. Network Address Translation-Protocol Translation.






14. Aka minimum CIR.






15. Defined in IEEE 802.1AD - defines a messaging protocol used to negotiate the dynamic creation of PortChannels (EtherChannels) and to choose which ports can be placed into an EtherChannel.






16. Differentiated Services Code Point.






17. Network Based Application Recognition.






18. The Frame Relay protocol used between a DCE and DTE to manage the connection. Signaling messages for SVCs - PVC Status messages - and keepalives are all LMI messages.






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






20. Point-to-Point Protocol.






21. A BGP router that - unknown to it - is aided by a route reflector server to cause all iBGP routers in an AS to learn all eBGP-learned prefixes.






22. A set of parameters for CBAC to perform in its traffic inspection process.






23. An IOS feature in which multiple routing tables and routing forwarding instances exist in a single router - with interfaces being assigned to one of the several VRFs. This feature allows separating of routing domains inside a single router platform.






24. A 1-byte field in the IP header - originally defined by RFC 791 for QoS marking purposes.






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






26. Alternate name for the SPF algorithm - named for its inventor - Edsger W. Dijkstra.






27. An Internet standard (RFC 1305) that defines the messages and modes used for IP hosts to synchronize their time-of-day clocks.






28. A 3-bit field in an ISL header used for marking frames. Also - used generically to refer to either the ISL CoS field or the 802.1Q User Priority field.






29. A technology that enables frequency reuse. Two variants exist: frequency hopping (FHSS) and direct sequence (DSSS). Both techniques spread the signal power over a relatively wide portion of the frequency spectrum over time - to reduce interference be






30. 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.






31. 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.






32. 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.






33. A characterization of a BGP path attribute in which BGP implementations are not required to support the attribute (optional) - and for which if a router receives a route with such an attribute - the router should remove the attribute before advertisi






34. WRED compares this setting to the average queue depth to decide whether packets should be discarded. All packets are discarded if the average queue depth rises above this maximum threshold.






35. A neighbor state that signifies the other router has reached neighbor status - having passed the parameter check. The FIB entry details the information needed for forwarding: the next-hop router and the outgoing interface - in an optimized mtrie stru






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






37. A BGP path attribute that lists ASNs through which the route has been advertised. The AS_PATH includes four types of segments: AS_SEQ - AS_SET - AS_CONFED_SEQ - and AS_CONFED_SET. Often - this term is used synonymously with AS_SEQ






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






39. 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.






40. Prefix list.






41. A Cisco switch feature that allows separation of ports as if they were in separate VLANs - while allowing the use of a single IP subnet for all ports.






42. A BGP router that forwards iBGP-learned routes to other iBGP routers.






43. The SNMP specifications - standardized in RFCs - defining the rules by which SNMP MIB variables should be defined.






44. Protocol Independent Multicast dense-mode routing protocol.






45. Reduces the bandwidth necessary for radio management information - such as access point status messages - that is sent across the network by eliminating redundant management information.






46. A mapping between each DSCP value and a corresponding CoS value - often used in Cisco LAN switches when performing classification for egress queuing.






47. An 802.1d STP port state in which the port has been administratively disabled.






48. Each 802.11 station periodically sends a probe request frame on each RF channel and monitors probe response frames that all access points within range send back. Stations use the signal strength of the probe response frames to determine which access






49. Access Control Entry. An individual line in an ACL.






50. The first 6 bits of the DS field - used for QoS marking.