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CCIE Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 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






2. A set of all devices for which any frame sent by one of the devices would collide with any frames transmitted at the same time by any of the other devices in the set.






3. Congestion window.






4. The original MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. It is slightly different from LDP - but functionally equivalent. See also LDP.






5. Forwarding Information Base.






6. Superframe






7. Smoothed Round-Trip Time.






8. 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






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






10. VTP pruning.






11. An MQC-based feature of IOS that is used to classify and mark packets for QoS purposes.






12. Network Address Translation-Protocol Translation.






13. A workstation or server configured to collect and present RMON data for reporting purposes.






14. Jargon used by STP mostly when discussing the root election process; refers to a Hello with a lower bridge ID. Sometimes refers to a Hello with the same bridge ID as another - but with better values for the tiebreakers in the election process.






15. A designated router that is directly connected with a source of the multicast group.






16. Protocol data unit.






17. A type of OSPF stub area that - unlike stub areas - can inject external routes into the NSSA area.






18. A Frame Relay address used in Frame Relay headers to identify the VC






19. Boot Protocol. A standard (RFC 951) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address - along with other configuration settings - including a subnet mask and default gateway IP address.






20. 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.






21. The IP address to which Label Distribution Protocol (LDP) sends LDP Hellos. Also used in IP multicast to send packets to all multicast routers.






22. In Frame Relay - a link between a router and a Frame Relay switch.






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






24. Digital subscriber line - a common Internet service type for residential and business customers.






25. The ASN assigned to a confederation sub-AS.






26. An administrative setting - included in Hellos - that is the first criteria for electing a DR. The highest priority wins - with values from 1-255 - with priority 0 meaning a router cannot become DR or BDR.






27. Port Aggregation Protocol.






28. An Internet standard authentication protocol that uses secure hashes and a three-way handshake to perform authentication over a PPP link.






29. The operating mode of shaped round-robin that provides behavior like CBWFQ with bandwidth allocated between different traffic classes by a relative amount rather than absolute percentage of the available bandwidth.






30. A local Cisco-proprietary BGP setting that is not advertised to any peers. A larger value is considered to be better.






31. Link-State Update.






32. Dynamic Multipoint VPN.






33. A Cisco IOS configuration tool for RIP and EIGRP for which the list matches routes in routing updates - and adds a defined value to the sent or received metric for the routes. The value added to the metric is the offset.






34. An EIGRP message that identifies neighbors - exchanges parameters - and is sent periodically as a keepalive function. Hellos do not require an Ack.






35. Rendezvous point.






36. A term used with WFQ for the number assigned to a packet as it is enqueued into a WFQ. WFQ schedules the currently lowest SN packet next.






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






38. Controls access to the Internet in public wireless LANs.






39. The 802.1X function implemented by a switch - in which the switch translates between EAPoL and RADIUS messages in both directions - and enables/disables ports based on the success/failure of authentication.






40. A table used by CEF that holds information about adjacent IP hosts to which packets can be forwarded.






41. Any OSPF neighbor for which the database flooding process has completed.






42. Multilink PPP.






43. An EIGRP message that is used to acknowledge reliable EIGRP messages - namely Update - Query - and Reply messages. Acks do not require an Ack.






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






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






46. Request-to-send/clear-to-send.






47. 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.






48. A multicast routing protocol whose default action is to flood multicast packets throughout a network.






49. The OSPF data structure that describes topology information.






50. Spanning Tree Protocol.







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