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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. Spanning Tree Protocol.






2. A 3-bit field in the first 3 bits of the ToS byte in the IP header - used for QoS marking.






3. A network/subnet to which only one OSPF router is connected.






4. Distance Vector Multicast Routing Protocol.






5. An MQC configuration style by which one policy map calls a second policy map. For example - a shaping policy map can call an LLQ policy map to implement LLQ for packets shaped by CB Shaping.






6. A method that creates three thresholds per egress queue in the Cisco 3560 switch. Traffic is divided into the three queues based on CoS value - and given different likelihoods (weight) for tail drop when congestion occurs based on which egress queue






7. Voice over Frame Relay.






8. Weighted tail drop.






9. The process by which neighboring OSPF routers examine their Hello messages and elect the DR. The decision is based on priority (highest) - or RID (highest) if priority is a tie.






10. A 16-bit number set with a router config-register command. It is used to set several low-level features related mainly to accessing the router and what the router does when powered on.






11. The protocol used in IPv6 for many functions - including address autoconfiguration - duplicate address detection - router - neighbor - and prefix discovery - neighbor address resolution - and parameter discovery.






12. Dynamic Host Configuration Protocol.






13. An 802.1d STP port state in which the port does not send or receive frames - except for listening for received Hello BPDUs.






14. A mechanism used by TCP senders to limit the dynamic window for a TCP connection - to reduce the sending rate when packet loss occurs. The sender considers both the advertised window size and CWND - using the smaller of the two.






15. A contiguous group of data links that share the same OSPF area number.






16. Multicast addresses that are not assigned by IANA.






17. A characteristic of OSPF interfaces that determines whether a DR election is attempted - whether or not neighbors must be statically configured - and the default Hello and Dead timer settings.






18. The original standardized set of generic SNMP MIB variables - defined in RFC 1158.






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






20. DCE devices are one of two devices on either end of a communications circuit - specifically the device with more control over the communications. Frame Relay switches are DCE devices. DCEs are also known as data circuit-terminating equipment (DTE).






21. Measured Round-Trip Time.






22. The list of entries learned by the switch DHCP snooping feature. The entries include the MAC address used as the device's DHCP client address - the assigned IP address - the VLAN - and the switch port on which the DHCP assignment messages flowed.






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






24. Operates in dense mode and depends on its own unicast routing protocol that is similar to RIP to perform its multicast functions.






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






26. Time to Live.






27. Peak information rate.






28. 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.






29. A type of OSPF packet - used to communicate LSAs to another router.






30. Link Control Protocol.






31. A name used for DS3 lines inside the North American TDM hierarchy.






32. With OSPF - the encapsulation of OSPF messages inside IP - to a router with which no common subnet is shared - for the purpose of either mending partitioned areas or providing a connection from some remote area to the backbone area.






33. An MPLS term referring to any device that can forward packets that have MPLS labels.






34. The combination of MPLS labels and links over which a packet will be forwarded over an MPLS network - from the point of ingress to the MPLS network to the point of egress.






35. The notation in a Cisco IOS IP routing table that identifies the route used by that router as the default route.






36. A name used for DS1 lines inside the North American TDM hierarchy.






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






38. 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.






39. In switch port security - the process whereby the switch dynamically learns the MAC address(es) of the device(s) connected to a switch port - and then adds those addresses to the running configuration as allowed MAC addresses for port security.






40. Multicast Open Shortest Path First.






41. 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.






42. A T1 alarm state that occurs when the receiver can no longer consistently identify the frame. See LOF.






43. 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.






44. Cisco-proprietary STP feature in which switches use messaging to confirm the loss of Hello BPDUs in a switch's Root Port - to avoid having to wait for maxage to expire - resulting in faster convergence.






45. RFC 1918-defined IPv4 network numbers that are not assigned as public IP address ranges - and are not routable on the Internet. Intended for use inside enterprise networks.






46. A table inside a router that holds the path attributes and NLRI known by the BGP implementation on that router.






47. Differentiated Services Code Point.






48. Burst With shaping and policing - the number of additional bits that may be sent after a period of relative inactivity.






49. Congestion window.






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