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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. An attack by which the attacker initiates many TCP connections to a server - but does not complete the TCP connections - by simply not sending the third segment normally used to establish the connection. The server may consume resources and reject ne






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






3. An NTP client that assumes that a server will send NTP broadcasts - removing the requirement for the client to have the NTP server's IP address preconfigured.






4. Weighted tail drop.






5. A Cisco-proprietary feature by which multiple routers can provide interface IP address redundancy - as well as cause a set of clients to load-balance their traffic across multiple routers inside the GLBP group.






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






7. VLAN Trunking Protocol.






8. Message sent by a PIM-DM router to a downstream router when it receives a Graft message from the downstream router; sent using the unicast address of the downstream router.






9. High Density Binary 3.






10. A TCP variable that defines the largest number of bytes allowed in a TCP segment's Data field. The calculation does not include the TCP header. With a typical IP MTU of 1500 bytes - the resulting default MSS would be 1460. TCP hosts must support an M






11. Defined in RFC 3748 - the protocol used by IEEE 802.1X for exchanging authentication information.






12. The one VLAN on an 802.1Q trunk for which the endpoints do not add the 4-byte 802.1Q tag when transmitting frames in that VLAN.






13. The password required by the enable command. Also - this term may specifically refer to the password defined by the enable password command.






14. Maximum Response Time.






15. A Layer 3 forwarding path through a router that does not optimize the forwarding path through the router.






16. A protection against problems caused by unidirectional links between two switches. Uses messaging between switches to detect the loop - err-disabling the port when the link is unidirectional.






17. Any other router - sharing a common data link - with which a router exchanges Hellos - and for which the parameters in the Hello pass the parameter-check process.






18. Virtual LAN.






19. Dynamic Trunking Protocol.






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






21. Differentiated Services Code Point.






22. The practice of defining boundaries that determine how far multicast traffic will travel in your network.






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






24. When subnetting a class A - B - or C address - the subnet for which all subnet bits are binary 1.






25. Cisco-proprietary STP feature in which an access layer switch is configured to be unlikely to become Root or to become a transit switch. Also - convergence upon the loss of the switch's Root Port takes place in a few seconds.






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






27. A strategy for subnetting a classful network for which all masks/prefixes are the same value for all subnets of that one classful network.






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






29. The notation in a Cisco IOS IP routing table that identifies the route used by that router as the default route.






30. A standard (RFC 3768) feature by which multiple routers can provide interface IP address redundancy so that hosts using the shared - virtual IP address as their default gateway can still reach the rest of a network even if one or more routers fail.






31. 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






32. The process of forwarding packets through a router. Also call IP routing.






33. 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.






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






35. Defined in FRF.11 - an FR VC that uses a slightly varied header - as compared with FRF.3 data VCs - to accommodate voice payloads directly encapsulated inside the Frame Relay LAPF header.






36. Expedited Forwarding.






37. In the context of SNMP - the GetNext command is sent by an SNMP manager - to an agent - requesting the value of a single MIB variable. The GetNext request identifies a variable for which the manager wants the variable name and value of the next MIB l






38. A WRED process by which WRED does not discard packets during times in which a queue's minimum threshold has not been passed.






39. A 16-bit number set with a router config-register command. It is used to set several low-level features related mainly to accessing the router and what the router does when powered on.






40. Out of Frame.






41. Network Time Protocol.






42. The encapsulation of EAP messages directly inside LAN frames. This encapsulation is used between the supplicant and the authenticator.






43. A configuration tool in Cisco IOS that allows basic programming logic to be applied to a set of items. Often used for decisions about what routes to redistribute - and for setting particular characteristics of those routes






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






45. A queuing scheduler concept - much like CQ's scheduler - in which queues are given some service in sequence. This term is often used with queuing in Cisco LAN switches.






46. Context-Based Access Control.






47. The OSPF data structure that describes topology information.






48. A BGP feature that defines the IP TTL field value in packets sent between two eBGP peers. This feature is required when using IP addresses other than the interface IP address on the link between peers.






49. An MPLS data structure used for forwarding labeled packets. The LFIB lists the incoming label - which is compared to the incoming packet's label - along with forwarding instructions for the packet.






50. Spanning Tree Protocol.