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CCIE Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. In the PIM-SM design - the central distribution point to which the multicast traffic is first delivered from the source designated router.






2. IP multicast address range from 224.0.0.0 through 239.255.255.255.






3. Excess Burst.






4. Digital Signal Level 1.






5. Any routing protocol that uses the concept of using the SPF algorithm with an LSDB to compute routes.






6. With shaping - the number of bits allowed to be sent every Tc. Also defines the size of the token bucket when Be = 0.






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






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






9. An Internet standard serial data-link protocol - used on synchronous and asynchronous links - that provides data-link framing - link negotiation - Layer 3 interface features - and other functions.






10. Multicast addresses that are not assigned by IANA.






11. With EIGRP - the metric value for the lowest-metric route to a particular subnet.






12. A Cisco IOS queuing tool that uses MQC configuration commands and reserves a minimum bandwidth for each queue.






13. A bit inside the Frame Relay header that - when set - implies that congestion occurred in the direction opposite (or backward) as compared with the direction of the frame.






14. The process of taking a PDU from some other source and placing a header in front of the original PDU - and possibly a trailer behind it.






15. The most recent standardized set of generic SNMP MIB variables - defined in RFC 1213 and updated in RFCs 2011 through 2013.






16. A Cisco IOS queuing tool most notable for its scheduler - which always services the high-priority queue over all other queues.






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






18. 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.






19. Customer edge.






20. The algorithm used by OSPF and IS-IS to compute routes based on the LSDB.






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






22. A dotted-decimal number that represents a subnet. It is the lowest numeric value in the range of IP addresses implied by a subnet number and prefix/mask.






23. Link-State Acknowledgment.






24. A message sent by each host - either in response to a router query or on its own - to all multicast groups for which it would like to receive multicast traffic. The destination address on the Report is 224.0.0.22 - and a host can specify the source a






25. Virtual Routing and Forwarding table.






26. A well-known discretionary BGP path attribute that flags a route as being a summary route.






27. An MPLS VPN term referring to an LSR that has no direct customer connections - meaning that the P router does not need any visibility into the VPN customer's IP address space.






28. Diffusing Update Algorithm.






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






30. 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.






31. Edge LSR.






32. A BGP feature that overcomes the requirement of a full mesh of iBGP peers inside a single AS by separating the AS into multiple sub-autonomous systems.






33. The RFC-standard MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. See also TDP.






34. The 32-bit number used to represent an OSPF router.






35. Time to Live.






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






37. EAP over LAN.






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






39. A technology that sends a high-speed data stream over multiple subcarriers simultaneously. It is highly immune to multipath interference. 802.11a and 802.11g specify the use of OFDM.






40. Virtual circuit.






41. Temporal Key Integrity Protocol.






42. An optional contention-free 802.11 access protocol that requires the access point to poll wireless stations before they are able to send frames. Not commonly implemented.






43. A characterization of a BGP path attribute in which all BGP implementations must support and understand the attribute (well known) - and all BGP Updates must include the attribute (mandatory).






44. 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






45. A dotted-decimal number used to help define the structure of an IP address. The binary 0s in the mask identify the host portion of an address - and the binary 1s identify either the combined network and subnet part (when thinking classfully) or the n






46. A calculation of the length of the AS_PATH PA - which includes 1 for each number in the AS_SEQ - 1 for an entire AS_SET segment - and possibly other considerations.






47. A switch feature in which the switch examines DHCP messages and - for untrusted ports - filters all messages typically sent by servers and inappropriate messages sent by clients. It also builds a DHCP snooping binding table that is used by DAI and IP






48. A BGP neighbor state in which the BGP neighbors have stabilized and can exchange routing information using BGP Update messages.






49. In IPv6 - the Neighbor Discovery message used by an IPv6 node to request information about a neighbor or neighbors.






50. 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.