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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 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.






2. In MPLS VPNs - an entity in a single router that provides a means to separate routes in different VPNs. The VRF includes per-VRF instances of routing protocols - a routing table - and an associated CEF FIB.






3. An IPv6/IPv4 tunneling method that is designed for transporting IPv6 packets within a site where a native IPv6 infrastructures is not available.






4. Multilink PPP.






5. Burst With shaping and policing - the number of additional bits that may be sent after a period of relative inactivity.






6. A technology that enables frequency reuse. Two variants exist: frequency hopping (FHSS) and direct sequence (DSSS). Both techniques spread the signal power over a relatively wide portion of the frequency spectrum over time - to reduce interference be






7. 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.






8. The combination of PVST+ and Rapid Spanning Tree. It provides subsecond convergence time and is compatible with PVST+ and MSTP.






9. A Cisco IOS configuration tool - using the ip as-path access-list command - that defines a list of statements that match the AS_PATH BGP path attribute using regular expressions.






10. Expedited Forwarding.






11. Message Digest 5.






12. Protects against problems caused by unidirectional links between two switches. Watches for loss of received Hello BPDUs - in which case it transitions to a loop-inconsistent state instead of transitioning to a forwarding state.






13. 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.






14. The operating mode of shaped round-robin that provides a low-latency queue with policing.






15. A small FIFO queue associated with each router's physical interface - for the purpose of making packets available to the interface hardware - removing the need for a CPU interrupt to start sending the next packet out the interface.






16. With RIP - a per-route timer (default 180 seconds) that begins when a route's metric changes to a larger value.






17. Defined in RFC 2091 - the extensions define how RIP may send a full update once - and then send updates only when routes change - when an update is requested - or when a RIP interface changes state from down to up.






18. A neighbor state that signifies the other router has reached neighbor status - having passed the parameter check.






19. A BGP router that forwards iBGP-learned routes to other iBGP routers.






20. A route that is created to represent one or more smaller component routes - typically in an effort to reduce the size of routing and topology tables.






21. Shaped round-robin.






22. Excess Burst.






23. In IP routing - a term referring to the process of forwarding packets through a router.






24. An FRF standard for Frame Relay-to-ATM Service Interworking in which both DTEs use Frame Relay - with ATM in between.






25. 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






26. The number of beacons that governs how often multicast frames are sent over a wireless LAN.






27. 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.






28. A type of OSPF stub area for which neither external (type 5) LSAs are introduced - nor type 3 summary LSAs; instead - the ABRs originate and inject default routes into the area. External routes cannot be injected into a totally stubby area.






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






30. An SPF calculation as a result of changes inside the same area as a router - for which the SPF run must examine the full LSDB.






31. The common set of IOS configuration commands that is used with each QoS feature whose name begins with "Class-Based."






32. Cell Loss Priority.






33. An individual line in an ACL.






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






35. The rate at which a policer limits the bits exiting or entering the policer.






36. DCE devices are one of two devices on either end of a communications circuit - specifically the device with more control over the communications. Frame Relay switches are DCE devices. DCEs are also known as data circuit-terminating equipment (DTE).






37. From one perspective - DTE devices are one of two devices on either end of a communications circuit - specifically the device with less control over the communications. In Frame Relay - routers connected to a Frame Relay access link are DTE devices.






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






39. With private VLANs - a secondary VLAN in which the ports can send and receive frames with each other - but not with ports in other secondary VLANS.






40. With RIP - a per-route timer that increases until the router receives a routing update that confirms the route is still valid - upon which the timer is reset to 0. If the updates cease - the Invalid timer will grow - until reaching the timer setting






41. Tag Distribution Protocol.






42. 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.






43. The 802.1X function implemented by a switch - in which the switch translates between EAPoL and RADIUS messages in both directions - and enables/disables ports based on the success/failure of authentication.






44. IP Control Protocol.






45. A style of attack in which an ICMP Echo is sent with a directed broadcast (subnet broadcast) destination IP address - and a source address of the host that is being attacked. The attack can result in the Echo reaching a large number of hosts - all of






46. A BGP ASN whose value is between 64 -512 and 65 -535. These values are not assigned for use on the Internet - and can be used for private purposes - typically either within confederations or by ISPs to hide the ASN used by some customers.






47. An IPv6 address format used for publicly registered IPv6 addresses.






48. The portion of PPP focused on negotiating IP features






49. An interface on a Cisco IOS-based switch that is treated as if it were an interface on a router.






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