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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. In IPv6 DNS - the IPv6 equivalent of an IPv4 DNS A record.






2. A Cisco IOS queuing tool that uses MQC configuration commands - reserves a minimum bandwidth for some queues - provides high-priority scheduling for some queues - and polices those queues to prevent starvation of lower-priority queues during interfac






3. In IPv6 - the Neighbor Discovery message used by an IPv6 node to send information about itself to its neighbors.






4. Typically used by protocols that perform flow control (like TCP) - a TCP window is the number of bytes that a sender can send before it must pause and wait for an acknowledgement of some of the yet-unacknowledged data.






5. 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.






6. Data-link connection identifier.






7. The process of forwarding packets through a router. Also called IP forwarding.






8. A protocol used for reliable multicast and unicast transmissions. Used by EIGRP.






9. Exterior Gateway Protocol.






10. The portion of PPP focused on features that are unrelated to any specific Layer 3 protocol.






11. 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.






12. Permanent virtual circuit.






13. An optional transitive BGP path attribute that - for a summary route - lists the BGP RID and ASN of the router that created the summary.






14. A standard (RFC 903) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address. See also ARP.






15. Alarm Indication Signal. With T1s - the practice of sending all binary 1s on the line in reaction to problems - to provide signal transitions and allow recovery of synchronization and framing.






16. With OSPF - the OSPF router that wins an election amongst all current neighbors. The DR is responsible for flooding on the subnet - and for creating and flooding the type 2 LSA for the subnet.






17. A state variable kept by a router for each known neighbor or potential neighbor.






18. A subset of a classful IP network - as defined by a subnet mask - which used to address IP hosts on the same Layer 2 network in much the same way as a classful network is used.






19. The Cisco IOS Router IP Traffic Export feature - intended for intrusion detection - exports IP traffic that has signs of an attack - such as duplicate IP packets simultaneously received on two or more of a router's interfaces.






20. Another name for Superframe.






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






22. Distance Vector Multicast Routing Protocol.






23. 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.






24. An MPLS term referring to the MPLS label just before the IP header. Also called the VPN label when implementing MPLS VPNs.






25. An E-LSR in an MPLS VPN network whose role in a particular discussion is to receive unlabeled packets over customer links and then forward the packets as labeled packets into the MPLS network.






26. A router that should not be used to forward packets between other routers. Other routers will not send Query messages to a stub router.






27. Slow Start Threshold.






28. Provider router.






29. IP multicast address range from 224.0.0.0 through 239.255.255.255.






30. Prefix list.






31. 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






32. Controls the distribution of multicast traffic for the private multicast address range 239.0.0.0 to 239.255.255.255 by configuring a filter and applying it on the interfaces.






33. Customer edge.






34. A switch feature in which the switch examines DHCP messages and - for untrusted ports - filters all messages typically sent by servers and inappropriate messages sent by clients. It also builds a DHCP snooping binding table that is used by DAI and IP






35. The multicast IP address 224.0.0.6 - listened for by DR and BDR routers.






36. Enhanced Local Management Interface.






37. 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.






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






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






40. Request-to-send/clear-to-send.






41. A wireless LAN that includes the use of access points. Infrastructure mode connects wireless users to a wired network and allows wireless users to roam throughout a facility between different access points. All 802.11 data frames in an infrastructure






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






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






44. An MPLS term describing designs in which one or more MPLS customer sites can be reached from multiple other VPNs.






45. Extended Superframe.






46. A Cisco IOS queuing tool that uses MQC configuration commands and reserves a minimum bandwidth for each queue.






47. An early standard from AT&T for encoding analog voice as a digital signal for transmission over a TDM network. PCM requires 64 kbps - and is the basis for the DS0 speed.






48. Ethernet feature in which a NIC or Ethernet port can only transmit or receive at the same instant in time - but not both. Half duplex is required when a possibility of collisions exists.






49. Neighbor Discovery Protocol.






50. WRED is a method of congestion avoidance that works by dropping packets before the output queue becomes completely full. WRED can base its dropping behavior on IP Precedence or DSCP values to drop low-priority packets before high-priority packets.