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






2. VLAN Trunking Protocol.






3. The portion of PPP focused on features that are unrelated to any specific Layer 3 protocol.






4. The practice of defining boundaries that determine how far multicast traffic will travel in your network.






5. A packet-scheduling algorithm used in Cisco switches that provides similar behavior to CBWFQ in shared mode and polices in shaped mode.






6. With RIP - a per-route timer - which is reset and grows with the Invalid timer. When the Flush timer mark is reached (default 240 seconds) - the router removes the route from the routing table - and now accepts any other routes about the failed subne






7. The operating mode of shaped round-robin that provides behavior like CBWFQ with bandwidth allocated between different traffic classes by a relative amount rather than absolute percentage of the available bandwidth.






8. Label Distribution Protocol.






9. A routing protocol feature by which the routing update includes only routes that have changed - rather than include the entire set of routes.






10. IP routing The simplest MPLS application - involving the advertisement of an IGP to learn IP routes - and LDP or TDP to advertise labels.






11. The process of taking the IP - UDP - and RTP headers of a voice or video packet - compressing them - and then uncompressing them on the receiving router.






12. An EIGRP router's reaction to an input event - leading to the use of a feasible successor or going active on a route.






13. A message sent by the multicast router - by default every 60 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






14. 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.






15. Provides dynamic inspection of traffic as it traverses the router. It uses Context-Based Access Control (CBAC) to look deeper into a packet than an access list can. It tracks outbound traffic and dynamically allows in responses to that traffic.






16. Sent by a PIM-DM or PIM-SM router when it receives a multicast packet for a group on a LAN interface that is in the outgoing interface list for the group; includes the administrative distance of the unicast routing protocol used to learn the network






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






18. In IP routing - a term referring to the building of IP routing tables by IP routing protocols.






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






20. A serial-line encoding standard like B8ZS - but with each set of four consecutive 0s being changed to include a Bipolar Violation to maintain synchronization.






21. PIM-SM is a method of routing multicast packets that requires some intelligence in the network about the locations of receivers so that multicast traffic is not flooded into areas with no receivers. PIM Sparse Mode gets its name from the assumption t






22. A Frame Relay traffic shaping feature during which the shaping rate is reduced when the shaper notices congestion through the receipt of BECN or ForeSight messages.






23. Jargon used to refer to the first of two buckets in the dual token bucket model; its size is Bc.






24. A type of AS_PATH segment consisting of an unordered list of ASNs consolidated from component subnets of a summary BGP route.






25. 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.






26. A time value that each wireless station must set based on the duration value found in every 802.11 frame. The time value counts down and must be equal to zero before a station is allowed to access the wireless medium. The result is a collision-avoida






27. 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.






28. 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.






29. A type of AS_PATH segment consisting of an ordered list of ASNs through which the route has been advertised.






30. Another name for Superframe.






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






32. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised outside the local AS.






33. 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.






34. An SPF calculation for which a router does not need to run SPF for any LSAs inside its area - but instead runs a very simple algorithm for changes to LSAs outside its own area.






35. 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






36. A type of OSPF packet used to acknowledge LSU packets.






37. 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






38. 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






39. WRED compares this setting to the average queue depth to decide whether packets should be discarded. No packets are discarded if the average queue depth falls below this minimum threshold.






40. Refers to how a router views a BGP peer relationship - in which the peer is in the same AS.






41. Static length subnet masking.






42. A method for how a TCP sender grows its calculated CWND variable - thereby growing the allowed window for the connection. Congestion Avoidance grows CWND linearly.






43. Another name for 802.1Q-in-Q. See 802.1Q-in-Q.






44. Defined in RFC 1293 - this protocol allows a Frame Relay-attached device to react to a received LMI "PVC up" message by announcing its Layer 3 addresses to the device on the other end of the PVC.






45. A term referring to the processes and bits in the data stream used to manage the Telco TDM hierarchy.






46. 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.






47. 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.






48. Multilink PPP.






49. The IEEE standardized protocol for VLAN trunking.






50. The first 4 bits of the first octet must be 1110. The last 28 bits are unstructured.







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