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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. Weighted random early detection.






2. Provider router.






3. A state for a route in an EIGRP topology table that indicates that the router is actively sending Query messages for this route - attempting to validate and learn the current best route to that subnet.






4. Classless interdomain routing.






5. Defines a particular behavior for FTP regarding the establishment of TCP data connections. In passive mode - an FTP server uses the FTP PORT command - over the FTP control connection - to tell the FTP client the port on which the server will be liste






6. An E-LSR in an MPLS VPN network whose role in a particular discussion is to receive labeled packets from other LSRs and then forward the packets as unlabeled packets to CE routers.






7. Used by RRs to denote the RID of the iBGP neighbor that injected the NLRI into the AS.






8. Forwarding Information Base.






9. A type of spread spectrum that spreads RF signals over the frequency spectrum by transmitting the signal at different frequencies according to a hopping pattern. One of the original 802.11 physical layers used FHSS to offer data rates of 1 and 2 Mbps






10. A communication protocol between hosts and a multicast router by which routers learn of which multicast groups' packets need to be forwarded onto a LAN.






11. A BGP message that includes withdrawn routes - path attributes - and NLRI.






12. Reliable Transport Protocol.






13. A commonly used name for Multi-VRF CE.






14. Link-state advertisement.






15. A Cisco-proprietary LMI protocol - implemented in Cisco WAN switches and routers - through which the switch can inform the router about parameters for each VC - including CIR - Bc - and Be.






16. A BGP feature by which a router learns iBGP routes - and then forwards them to other iBGP peers - reducing the required number of iBGP peers while also avoiding routing loops.






17. An STP timer that dictates how long a switch should wait when it ceases to hear Hellos.






18. The characterization of how far EIGRP Query messages flow away from the router that first notices a failed route and goes active for a particular subnet.






19. The IPv6 protocol used for the discovery of which hosts are listening for which multicast IP addresses for IPv6.






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






21. Voice over Frame Relay.






22. A 3-bit field in the first 3 bits of the ToS byte in the IP header - used for QoS marking.






23. Aka Rapid Per-VLAN Spanning Tree Plus.






24. 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.






25. A Cisco IOS queuing tool most notable for its automatic classification of packets into separate per-flow queues.






26. On a serial cable - the pin lead set by the DCE to imply that the DCE is ready to signal using pin leads






27. An early standard from AT&T for encoding analog voice as a digital signal for transmission over a TDM network. PCM requires 64 kbps - and is the basis for the DS0 speed.






28. With EIGRP - a route that is not a successor route - but that meets the feasibility condition; can be used when the successor route fails - without causing loops.






29. A group of devices on one or more LANs that are configured (using management software) so that they can communicate as if they were attached to the same wire - when - in fact - they are located on a number of different LAN segments. Because VLANs are






30. A state variable kept by a router for each known neighbor or potential neighbor.






31. In OSPF - a router that is prepared to take over the designated router.






32. Request-to-send/clear-to-send.






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






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






35. With some routing protocols - the time period between successive Hello messages.






36. A feature of Ethernet NICs. When the NIC transmits an electrical signal - it "loops" the transmitted electrical current back onto the receive pair. By doing so - if another NIC transmits a frame at the same time - the NIC can detect the overlapping r






37. Retransmission Timeout.






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






39. 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.






40. The feature in a Cisco IOS device by which a terminal session's previously typed commands are remembered - allowing the user to recall the old commands to the command line through a simple key sequence (for example - the up-arrow key).






41. The innermost MPLS header in an packet traversing an MPLS VPN - with the label value identifying the forwarding details for the egress PE's VRF associated with that VPN.






42. 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.






43. With OSPF - the timer used to determine when a neighboring router has failed - based on a router not receiving any OSPF messages - including Hellos - in this timer period.






44. A mechanism that counters collisions caused by hidden nodes. If enabled - the station or access point must first send an RTS frame and receive a CTS frame before sending each data frame.






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






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






47. An 802.11 frame that access points or stations in ad hoc networks send periodically so that wireless stations can discover the presence of a wireless LAN and coordinate use of certain protocols - such as power-save mode.






48. A method for optimizing the flow of multicast IP packets passing through a LAN switch. The switch using IGMP snooping examines IGMP messages to determine which ports need to receive traffic for each multicast group.






49. Temporal Key Integrity Protocol.






50. An intrusion detection system that safeguards the wireless LAN from malicious and unauthorized access.







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