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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 calculated TCP variable - used along with the TCP CWND variable - to dictate a TCP sender's behavior when it recognizes packet loss. As CWND grows after packet loss - the TCP sender increases CWND based on Slow Start rules - until CWND grows to be






2. An IPv6/IPv4 tunneling method that allows isolated IPv6 domains to be connected over an IPv4 network.






3. Hot Standby Router Protocol.






4. Temporal Key Integrity Protocol.






5. Removing unwanted VLANs from a Layer 2 path.






6. A number between 1 and 64 -511 (public) and 64 -512 and 65 -535 (private) assigned to an AS for the purpose of identifying a specific BGP domain.






7. Virtual Router Redundancy Protocol.






8. A group of devices on one or more LANs that are configured (using management software) so that they can communicate as if they were attached to the same wire - when - in fact - they are located on a number of different LAN segments. Because VLANs are






9. Cisco-proprietary STP feature in which a switch port - known to not have a bridge or switch attached to it - transitions from disabled to forwarding state without using any intermediate states.






10. Web Cache Communication Protocol.






11. A BGP path attribute that lists the next-hop IP address used to reach an NLRI.






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






13. 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.






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






15. A message sent by the multicast router - by default every 60 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






16. The initial 802.11 common key encryption mechanism; vulnerable to hackers.






17. Carrier sense multiple access with collision detection. A media-access mechanism where devices ready to transmit data first check the channel for a carrier. If no carrier is sensed for a specific period of time - a device can transmit. If two devices






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






19. An 802.1w RSTP port state in which the port is not forwarding or receiving; covers 802.1d port states disabled - blocking - and listening.






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






21. The portion of PPP focused on negotiating IP features






22. A packet-scheduling algorithm used in Cisco switches that provides similar behavior to CBWFQ in shared mode and polices in shaped mode.






23. A field within a route entry in a routing update - used to associate a generic number with the route. It is used when passing routes between routing protocols - allowing an intermediate routing protocol to pass information about a route that is not n






24. An attack by which the attacker initiates many TCP connections to a server - but does not complete the TCP connections - by simply not sending the third segment normally used to establish the connection. The server may consume resources and reject ne






25. 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






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






27. 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.






28. Dynamic ARP Inspection.






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






30. A queuing scheduler's logic by which - if a particular queue has packets in it - those packets always get serviced next.






31. 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.






32. A field in the IP header that is decremented at each pass through a Layer 3 forwarding device.






33. Gateway Load Balancing Protocol.






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






35. A set of four hex digits listed in an IPv6 address. Each quartet is separated by a colon.






36. Network Address Translation.






37. On a serial cable - the pin lead set by the DTE to tell the DCE that the DTE wants to send data.






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






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






40. 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






41. Superframe






42. With RIP - a per-route timer (default 180 seconds) that begins when a route's metric changes to a larger value.






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






44. 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.






45. The process of taking a PDU from some other source and placing a header in front of the original PDU - and possibly a trailer behind it.






46. Link-State Acknowledgment.






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






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






49. Defined in RFC 2289 - a mechanism by which a shared key and a secret key together feed into a hash algorithm - creating a password that is transmitted over a network. Because the shared key is not reused - the hash value is only valid for that indivi






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