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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. Version 6 of the IP protocol - which uses 128-bit IP addresses.






2. External BGP.






3. A term relating to Cisco LAN switch tail-drop logic - in which multiple tail-drop thresholds may be assigned based on CoS or DSCP - resulting in some frames being discarded more aggressively than others.






4. One of the two modes of MDRR - in which the priority queue is serviced between each servicing of the non-priority queues.






5. A switch feature that examines incoming frames - comparing the source IP and MAC addresses to the DHCP snooping binding database - filtering frames whose addresses are not listed in the database for the incoming interface.






6. Orthogonal frequency division multiplexing.






7. An OSPF external route for which internal OSPF cost is not added to the cost of the route as it was redistributed into OSPF.






8. A type of spread spectrum that spreads RF signals over the frequency spectrum by representing each data bit by a longer code. 802.11b specifies the use of DSSS.






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






10. 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.






11. A logical concept that represents the path over which frames travel between DTEs. VCs are particularly useful when comparing Frame Relay to leased physical circuits.






12. A message sent by a multicast router - by default every 125 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






13. A NAT term describing an IP address representing a host that resides outside the enterprise network - with the address being used in packets outside the enterprise network.






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






15. Autonomous System Boundary Router. An OSPF router that redistributes routes from some other source into OSPF.






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






17. A term referring generically to a server that performs many AAA functions. It also refers to the software product Cisco Secure Access Control Server.






18. A Cisco-proprietary messaging protocol implemented in WAN switches that can be used to signal network status - including congestion - independent of end-user frames and cells.






19. The actual number of packets in a queue at a particular time.






20. An EIGRP message that is used to ask neighboring routers to verify their route to a particular subnet. Query messages require an Ack.






21. A prestandard (at the time of publication) wireless LAN physical layer that offers data rates in the hundreds of megabits per second.






22. Aka minimum CIR.






23. Challenge Handshake Authentication Protocol.






24. Modular QoS CLI.






25. CDP Control Protocol.






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






27. Modified Deficit Round-Robin.






28. In MPLS - a term used to define a label that an LSR learned from a neighboring LSR.






29. Wired Equivalent Privacy.






30. A message sent by a router - after receiving a Leave message from a host - to determine whether there are still any active members of the group. The router uses the group address as the destination address.






31. Receiver's advertised window.






32. Controls the distribution of multicast traffic by checking the TTL values configured on the interfaces. It forwards the multicast packet only on those interfaces whose configured TTL value is less than or equal to the TTL value of the multicast packe






33. A bit in the Frame Relay header that - when set to 1 - means that if a device needs to discard frames - it should discard the frames with DE 1 first.






34. Internal BGP.






35. A route that is used for forwarding packets when the packet does not match any more specific routes in the IP routing table.






36. An MPLS term referring to the first of several labels when an MPLS-forwarded packet has multiple labels (a label stack).






37. The process of breaking a frame into pieces - sending some of the fragments - and then sending all or part of a different packet - all of which is done to reduce the delay of the second packet.






38. Copper cable with RJ-45 connectors in which the wire at pin 1 on one end is connected to pin 1 on the other end; the wire at pin 2 is connected to pin 2 on the other end; and so on.






39. An individual line in an ACL.






40. A message that each host sends - either in response to a router Query message or on its own - to all multicast groups for which it would like to receive multicast traffic.






41. Advanced Encryption Standard A superior encryption mechanism that is part of the 802.11i standard and has much stronger security than TKIP.






42. Port Aggregation Protocol.






43. Layer x PDU.






44. 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






45. Cisco-proprietary VLAN trunking protocol.






46. A NAT term describing an IP address representing a host that resides inside the enterprise network - with the address being used in packets outside the enterprise network.






47. The process of running the SPF algorithm against the LSDB - with the result being the determination of the current best route(s) to each subnet.






48. A style of attack in which an ICMP Echo is sent with a directed broadcast (subnet broadcast) destination IP address - and a source address of the host that is being attacked. The attack can result in the Echo reaching a large number of hosts - all of






49. An NTP mode in which an NTP host does not adjust its clock - but in which it sends NTP messages to clients so that the clients can update their clocks based on the server's clock.






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