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CCIE Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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 IOS feature in which multiple routing tables and routing forwarding instances exist in a single router - with interfaces being assigned to one of the several VRFs. This feature allows separating of routing domains inside a single router platform.






2. In shaping and policing - commonly used to refer to the shaping or policing rate. For WAN services - a common reference to the bit rate defined in the WAN service business contract for each VC.






3. Class-Based Weighted Fair Queuing.






4. The first 48 bits of an IPv6 global address - used for efficient route aggregation.






5. A switch feature that examines incoming frames - comparing the source IP and MAC addresses to the DHCP snooping binding database - filtering frames whose addresses are not listed in the database for the incoming interface.






6. One-time password.






7. With EIGRP - the metric (distance) of a route as reported by a neighboring router.






8. The password required by the enable command. Also - this term may specifically refer to the password defined by the enable password command.






9. Weighted fair queuing.






10. A type of OSPF NSSA 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 can be injected into a totally NSSA area.






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






12. 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.






13. An IPv6 migration strategy in which a host or router supports both IPv4 and IPv6 natively.






14. A Cisco IOS feature that provides reporting information to a NetFlow aggregator based on traffic flows.






15. Inside telcos' original TDM hierarchy - a unit that combines multiple DS1s into a single channel






16. 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






17. Management Information Base.






18. Feasible distance.






19. 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.






20. Smoothed Round-Trip Time.






21. Single-bit fields in the TCP header. For example - the TCP SYN and ACK code bits are used during connection establishment.






22. When a PIM-SM router switches from RPT to SPT - it sends a PIM-SM Prune message for the source and the group with the RP bit set to its upstream router on the shared tree. RFC 2362 uses the notation PIM-SM (S - G) RP-bit Prune for this message.






23. The RMON function of sending a notification to an RMON collector or the console. Triggered by an RMON event.






24. Link Access Procedure for Frame-Mode Bearer Services.






25. The one VLAN on an 802.1Q trunk for which the endpoints do not add the 4-byte 802.1Q tag when transmitting frames in that VLAN.






26. Per-Hop Behavior.






27. A characterization of a BGP path attribute in which BGP implementations are not required to support the attribute (optional) - and for which if a router receives a route with such an attribute - the router should forward the attribute unchanged (tran






28. A Cisco router feature in which the router works to prevent SYN attacks either by monitoring TCP connections flowing through the router - or by actively terminating TCP connection until the TCP connection is established and then knitting the client-s






29. 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.






30. A standards-based way of helping routers find Rendezvous Points (RP). RPs notify BSRs of the groups they handle. BSRs in turn flood the group-to-RP mappings throughout the network. Each router individually determines which RP to use for a particular






31. With EIGRP - a timer started when a reliable (to be acknowledged) message is transmitted. For any neighbor(s) failing to respond in its RTO - the RTP protocol causes retransmission. RTO is calculated based on SRTT.






32. A predefined VC. A PVC can be equated to a leased line in concept.






33. The SNMP specifications - standardized in RFCs - defining the rules by which SNMP MIB variables should be defined.






34. Rapid Spanning Tree Protocol.






35. A queuing scheduler concept - much like CQ's scheduler - in which queues are given some service in sequence. This term is often used with queuing in Cisco LAN switches.






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






37. A specification for the 64-bit interface ID in an IPv6 address - composed of the first half of a MAC address - hex FFFE - and the last half of the MAC.






38. Protocol Independent Multicast dense-mode routing protocol.






39. Timer An STP timer that dictates how long a port should stay in the listening state and the learning state.






40. Link Aggregation Control Protocol.






41. Data Set Ready.






42. A characteristic of OSPF interfaces that determines whether a DR election is attempted - whether or not neighbors must be statically configured - and the default Hello and Dead timer settings.






43. An optimized Layer 3 forwarding path through a router or switch. CEF optimizes routing table lookup by creating a special - easily searched tree structure based on the contents of the IP routing table. The forwarding information is called the Forward






44. Customer edge.






45. A BGP path attribute that lists ASNs through which the route has been advertised. The AS_PATH includes four types of segments: AS_SEQ - AS_SET - AS_CONFED_SEQ - and AS_CONFED_SET. Often - this term is used synonymously with AS_SEQ






46. Aka receiver's advertised window.






47. In MPLS VPNs - a 64-bit Extended Community path attribute attached to a BGP route for the purpose of controlling into which VRFs the route is added.






48. Defined in RFCs 1517-1520 - a scheme to help reduce Internet routing table sizes by administratively allocating large blocks of consecutive classful IP network numbers to ISPs for use in different global geographies. CIDR results in large blocks of n






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






50. Another term for Port Address Translation. See PAT.






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