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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. Clear To Send.






2. The process of sending an infinite-metric route in routing updates when that route fails.






3. The data structure used by OSPF to hold LSAs.






4. Cisco-proprietary STP feature in which a switch port - known to not have a bridge or switch attached to it - transitions from disabled to forwarding state without using any intermediate states.






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






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






7. A state for a route in an EIGRP topology table that indicates that the router believes that the route is stable - and it is not currently looking for any new routes to that subnet.






8. An 802.1d STP port state in which the port sends and receives frames.






9. Assured Forwarding. A set of DiffServ PHBs that defines 12 DSCP values - with four queuing classes and three drop probabilities within each queuing class.






10. Exterior Gateway Protocol.






11. A process on a computing device that accepts SNMP requests - responds with SNMP-structured MIB data - and initiates unsolicited Trap messages back to an SNMP management station.






12. Instead of advertising all routes out a particular interface - the routing protocol omits the routes whose outgoing interface field matches the interface out which the update would be sent.






13. Point-to-Point Protocol over Ethernet. A convention often used as the data link protocol over Cable in which Ethernet is used as the data link protocol - but with PPP being encapsulated inside Ethernet. The combination gives the data link features of






14. An FRF standard for payload compression.






15. Link Control Protocol.






16. WRED compares this setting to the average queue depth to decide whether packets should be discarded. No packets are discarded if the average queue depth falls below this minimum threshold.






17. 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.






18. The process of taking a PDU from some other source and placing a header in front of the original PDU - and possibly a trailer behind it.






19. A field within a route entry in a routing update - used to associate a generic number with the route. It is used when passing routes between routing protocols - allowing an intermediate routing protocol to pass information about a route that is not n






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






21. 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.






22. Modified Deficit Round-Robin.






23. A routing protocol feature by which the routing update includes the entire set of routes - even if some or all of the routes are unchanged.






24. In IP routing - a term referring to the building of IP routing tables by IP routing protocols.






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






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






27. Network Address Translation-Protocol Translation.






28. Multicast Listener Discovery.






29. A Cisco-proprietary protocol - used by LAN switches to communicate VLAN configuration.






30. The first 48 bits of an IPv6 global address - used for efficient route aggregation.






31. A characterization of a network attack in which packets flow to the attacker - and then out to the true recipient. As a result - the user continues to send data - increasing the chance that the attacker learns more and better information.






32. The content engine in a WCCP cluster - which determines how traffic will be distributed within the cluster.






33. An OSPF area into which external (type 5) LSAs are not introduced by its ABRs; instead - the ABRs originate and inject default routes into the area.






34. VLAN Trunking Protocol.






35. A switch feature with which the switch watches ARP messages - determines if those messages may or may not be part of some attack - and filters those that look suspicious.






36. 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.






37. The first 4 bits of the first octet must be 1110. The last 28 bits are unstructured.






38. The term to describe a router that is neither the DR nor the BDR on a subnet that elects a DR and BDR.






39. A wireless LAN physical layer that operates at up to 54-Mbps data rates using OFDM in the 5-GHz band.






40. A type of OSPF packet used to acknowledge LSU packets.






41. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised outside the local confederation sub-AS.






42. 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.






43. 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.






44. Orthogonal frequency division multiplexing.






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. In the PIM-SM design - the central distribution point to which the multicast traffic is first delivered from the source designated router.






47. Quantum value.






48. The RFC-standard MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. See also TDP.






49. 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.






50. Inside telcos' original TDM hierarchy - the smallest unit of transmission at 64 kbps.







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