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






2. Orthogonal frequency division multiplexing.






3. Extended Superframe.






4. A type of IPv4 and IPv6 traffic designed primarily to provide one-to-many connectivity but unlike broadcast - has the capability to control the scope of traffic distribution.






5. The portion of PPP focused on supporting the CDP protocol.






6. A conceptual model used by CB Policing when using an excess burst.






7. Slow Start Threshold.






8. Access Control Entry. An individual line in an ACL.






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






10. A name used for DS1 lines inside the European TDM hierarchy.






11. Not-so-stubby area.






12. A Frame Relay traffic shaping feature during which the shaping rate is reduced when the shaper notices congestion through the receipt of BECN or ForeSight messages.






13. Data Carrier Detect.






14. A method of Link Fragmentation and Interleaving (LFI) over interfaces that natively use Frame Relay encapsulation. The routers first build MLP-style PPP headers - which are then encapsulated inside a Frame Relay header. The PPP headers are then used






15. In MPLS - a term used to define a label that an LSR allocates and then advertises to neighboring routers. The label is considered "local" on the router that allocates and advertises the label.






16. Generic routing encapsulation.






17. A convention for IP addresses in which class A - B - and C default network prefixes (of 8 - 16 - and 24 bits - respectively) are ignored.






18. CDP Control Protocol.






19. An EIGRP message that is used by neighbors to reply to a query. Reply messages require an Ack.






20. A type of AS_PATH segment consisting of an ordered list of ASNs through which the route has been advertised.






21. In the context of SNMP - the Set command is sent by an SNMP manager - to an agent - requesting that the agent set a single identified variable to the stated value. The main purpose is to allow remote configuration and remote operation - such as shutt






22. Variable name for the time interval used by shapers and by CAR.






23. Inverse ARP.






24. Another term for Port Address Translation. See PAT.






25. Cisco IOS IP Service Level Agent feature. Provides for router-generated information useful for verifying network performance on a scheduled basis - and the associated reporting functions.






26. Neighbor Advertisement.






27. An 802.1w RSTP port state in which the port is an alternative Designated Port on some LAN segment.






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






29. A security standard that includes both TKIP and AES and was ratified by the Wi-Fi Alliance.






30. Switched virtual circuit.






31. A BGP path attribute that is communicated throughout a single AS to signify which route of multiple possible routes is the best route to be taken when leaving that AS. A larger value is considered to be better.






32. Weighted round-robin.






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






34. A Cisco 12000 series router feature that combines the key features of LLQ and CQ to provide similar congestion-management features.






35. In MPLS VPNs - a 64-bit Extended Community path attribute attached to a BGP route for the purpose of controlling into which VRFs the route is added.






36. Defined in RFC 1293 - this protocol allows a Frame Relay-attached device to react to a received LMI "PVC up" message by announcing its Layer 3 addresses to the device on the other end of the PVC.






37. A Cisco-proprietary STP implementation - created many years before IEEE 802.1s and 802.1w - that speeds convergence and allows for one STP instance for each VLAN.






38. In OSPF - a number assigned to each LSA - ranging from 0x80000001 and wrapping back around to 0x7FFFFFFF - which is used to determine which LSA is most recent.






39. Secure Copy Protocol - one of the many ways of transferring files to and from Cisco IOS routers and switches.






40. Aka network layer reachability information.






41. 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






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






43. 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






44. 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.






45. In BGP - a set of routers inside a single administrative authority - grouped together for the purpose of controlling routing policies for the routes advertised by that group to the Internet.






46. PIM-SM is a method of routing multicast packets that requires some intelligence in the network about the locations of receivers so that multicast traffic is not flooded into areas with no receivers. PIM Sparse Mode gets its name from the assumption t






47. Single-bit fields in the TCP header. For example - the TCP SYN and ACK code bits are used during connection establishment.






48. Protocol Independent Multicast dense-mode routing protocol.






49. Alternate Mark Inversion. 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.






50. A BGP router in an AS that uses route reflectors - but that is not aided by any RR server.