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






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






3. 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.






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






5. 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.






6. Carrier sense multiple access with collision detection. A media-access mechanism where devices ready to transmit data first check the channel for a carrier. If no carrier is sensed for a specific period of time - a device can transmit. If two devices






7. A type of spread spectrum that spreads RF signals over the frequency spectrum by representing each data bit by a longer code. 802.11b specifies the use of DSSS.






8. 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.






9. Cisco IOS Embedded Event Manager - a feature that monitors events on a router and reports their results. Principally intended to increase availability - EEM provides flexible - granular detection and alerting functions.






10. A set of rules by which BGP examines the details of multiple BGP routes for the same NLRI and chooses the single best BGP route to install in the local BGP table.






11. The speed at which the access link is clocked. This choice affects the price of the connection and many aspects of traffic shaping and policing - compression - quality of service - and other configuration options.






12. Data Carrier Detect.






13. Pulse code modulation.






14. With RIP - the regular interval at which updates are sent. Each interface uses an independent timer - defaulting to 30 seconds.






15. Excess Burst.






16. 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






17. Method by which a dense-mode routing protocol distributes multicast traffic from a source to all the segments of a network. Also called shortest-path tree (SPT) - because it uses the shortest routing path from the source to the segments of the networ






18. The 802.1X driver that supplies a username/password prompt to the user and sends/receives the EAPoL messages.






19. An NTP mode in which two or more NTP servers mutually synchronize their clocks.






20. 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.






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






22. Out of Frame.






23. A term used in this book to refer to a route that is included in a larger summary route.






24. The Cisco IOS feature by which special short key sequences can be used to move the cursor inside the current command line to more easily change a command.






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






26. A number between 1 and 64 -511 (public) and 64 -512 and 65 -535 (private) assigned to an AS for the purpose of identifying a specific BGP domain.






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






28. The definitions for a particular set of data variables - with those definitions following the SMI specifications. See also SMI.






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






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






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






32. The two computers use a protocol with which to communicate with the same layer on another computer. The protocol defined by each layer uses a header that is transmitted between the computers to communicate what each computer wants to do.






33. Frequency hopping spread spectrum.






34. Hot Standby Router Protocol.






35. 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.






36. The second most significant bit in the most significant byte of an Ethernet MAC address - a value of binary 0 implies that the address is a Universally Administered Address (UAA) (also known as Burned-In Address [BIA]) - and a value of binary 1 impli






37. Autonomous System Boundary Router. An OSPF router that redistributes routes from some other source into OSPF.






38. When a wireless station connects to an access point - the access point assigns an association ID (AID) to the station. Various protocols - such as power-save mode - make use of the association ID.






39. With EIGRP - a purposefully slowly changing measurement of round-trip time between neighbors - from which the EIGRP RTO is calculated.






40. An individual line in an ACL.






41. Bipolar Violation.






42. 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).






43. VTP process that prevents the flow of broadcasts and unknown unicast Ethernet frames in a VLAN from being sent to switches that have no ports in that VLAN.






44. RFC 1918-defined IPv4 network numbers that are not assigned as public IP address ranges - and are not routable on the Internet. Intended for use inside enterprise networks.






45. Extended Superframe.






46. 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.






47. This term has two BGP-related definitions. First - it is the normal process in which a router - before sending an Update to an eBGP peer - adds its local ASN to the beginning of the AS_PATH path attribute. Second - it is the routing policy of purpose






48. Rendezvous point.






49. 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






50. Flush timer.