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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. Address Resolution Protocol. Defined in RFC 826 - a protocol used on LANs so that an IP host can discover the MAC address of another device that is using a particular IP address.






2. A type of routing protocol convergence event in which the metric for a route increases slightly over time because of the advertisement of an invalid route.






3. Variable-length subnet masking.






4. Forward Explicit Congestion Notification.






5. A term used with WFQ for the number assigned to a packet as it is enqueued into a WFQ queue. WFQ schedules the currently lowest FT packet next.






6. The process of taking the IP and TCP headers of a packet - compressing them - and then uncompressing them on the receiving router.






7. Class Selector.






8. In the PIM-SM design - the process by which a PIM-SM router can build the SPT between itself and the source of a multicast group and take advantage of the most efficient path available from the source to the router as long as it has one directly conn






9. An OSPF router that connects to the backbone area and to one or more non-backbone area.






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






11. In Frame Relay - a link between a router and a Frame Relay switch.






12. 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.






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






14. In wireless LANs - a mechanism that counters issues related to RF interference by dividing a larger 802.11 data frame into smaller frames that are sent independently to the destination. See also LFI.






15. A Cisco IOS configuration tool that can be used to match routing updates based on a base network address - a prefix - and a range of possible masks used inside the values defined by the base network address and prefix.






16. A term used with Cisco LAN switches - referring to a DSCP value used when making QoS decisions about a frame. This value may not be the actual DSCP value in the IP header encapsulated inside the frame.






17. A method of providing dynamically configured spoke-to-spoke VPN connectivity in a hub-and-spoke network that significantly reduces configuration required on the spoke routers compared to traditional IPsec VPN environments.






18. A single label and link that is part of a complete LDP. See also label switched path.






19. Forwarding Equivalence Class.






20. 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.






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






22. The list of entries learned by the switch DHCP snooping feature. The entries include the MAC address used as the device's DHCP client address - the assigned IP address - the VLAN - and the switch port on which the DHCP assignment messages flowed.






23. In 802.1X - the computer that stores usernames/passwords and verifies that the correct values were submitted before authenticating the user.






24. An FRTS configuration construct - configured with the map-class frame-relay global configuration command.






25. A component that interfaces with a phone using IP and provides connections to the Public Switched Telephone Network (PSTN).






26. IP Control Protocol.






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






28. Label Distribution Protocol.






29. Digital subscriber line - a common Internet service type for residential and business customers.






30. Port Aggregation Protocol.






31. An IPv6 address type that is used by a number of hosts in a network that are providing the same service. Hosts accessing the service are routed to the nearest host in an anycast environment based on routing protocol metrics.






32. 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.






33. Wi-Fi Protected Access. A security standard that includes both TKIP and AES and was ratified by the Wi-Fi Alliance.






34. Any OSPF neighbor for which the database flooding process has completed.






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






36. Receiver's advertised window.






37. From one multicast router's perspective - the upstream router is another router that has just forwarded a multicast packet to that router.






38. With Spanning Tree Protocol - the single port on each LAN segment from which the best Hello BPDU is forwarded.






39. 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.






40. Exterior Gateway Protocol.






41. 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.






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






43. Alternate Mark Inversion. A serial-line encoding standard that sends alternating positive and negative 3-volt signals for binary 1 - and no signal (0 V) for binary 0.






44. Uses Modular QoS CLI to control the amount and type of traffic handled by the router or switch control plane. Class maps identify traffic types - and then a service policy applied to the device control plane sets actions for each type of traffic.






45. A single address in each subnet for which packets sent to this address will be broadcast to all hosts in the subnet. It is the highest numeric value in the range of IP addresses implied by a subnet number and prefix/mask.






46. Route Target.






47. AS number. 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.






48. A generic term that refers to the data structure used by a layer in a layered network architecture when sending data.






49. In MPLS - a term used to define a label that an LSR allocates and then advertises to neighboring routers. The label is considered "local" on the router that allocates and advertises the label.






50. An architecture and set of documents that defines Cisco's best recommendations for how to secure a network.






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