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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. A method that creates three thresholds per egress queue in the Cisco 3560 switch. Traffic is divided into the three queues based on CoS value - and given different likelihoods (weight) for tail drop when congestion occurs based on which egress queue






2. A queue created by Cisco IOS as a result of the configuration of a queuing tool.






3. 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.






4. A standard (RFC 951) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address - along with other configuration settings - including a subnet mask and default gateway IP address.






5. 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.






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






7. In PIM-SM - the path of the group traffic that flows from the RP to the routers that need the traffic. It is also called the root-path tree (RPT) - because it is rooted at the RP.






8. Router-Port Group Management Protocol.






9. Prefix list.






10. An attack by which the attacker initiates many TCP connections to a server - but does not complete the TCP connections - by simply not sending the third segment normally used to establish the connection. The server may consume resources and reject ne






11. Ethernet feature in which a NIC or Ethernet port can only transmit or receive at the same instant in time - but not both. Half duplex is required when a possibility of collisions exists.






12. Used by WRED to calculate the rate at which the average queue depth changes as compared with the current queue depth. The larger the number - the slower the change in the average queue depth.






13. Controls the distribution of multicast traffic by checking the TTL values configured on the interfaces. It forwards the multicast packet only on those interfaces whose configured TTL value is less than or equal to the TTL value of the multicast packe






14. The initial 802.11 common key encryption mechanism; vulnerable to hackers.






15. Tag Distribution Protocol.






16. 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.






17. A switch feature that limits the number of allowed MAC addresses on a port - with optional limits based on the actual values of the MAC addresses.






18. Dynamic Host Configuration Protocol.






19. A type of OSPF stub area that - unlike stub areas - can inject external routes into the NSSA area.






20. An 802.1d STP port state in which the port has been administratively disabled.






21. A set of all devices that receive broadcast frames originating from any device within the set. Devices in the same VLAN are in the same broadcast domain.






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






23. 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






24. In BGP - a set of routers inside a single administrative authority - grouped together for the purpose of controlling routing policies for the routes advertised by that group to the Internet.






25. The feature in a Cisco IOS device by which a terminal session's previously typed commands are remembered - allowing the user to recall the old commands to the command line through a simple key sequence (for example - the up-arrow key).






26. Inside telcos' original TDM hierarchy - a unit that combines multiple DS0s into a single channel






27. VTP pruning.






28. The mandatory contention-based 802.11 access protocol that is also referred to as CSMA/CA.






29. A router that is allowed to receive a packet from an OSPF router and then forward the packet to another OSPF router.






30. Internet Group Management Protocol.






31. 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.






32. A term used in this book to refer to a route that is included in a larger summary route.






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






34. A T1 alarm state that occurs when the receiver can no longer consistently identify the frame. See LOF.






35. In an IOS confederation configuration - the actual ASN as seen by eBGP peers.






36. A set of packets in an MPLS network for which the MPLS network will apply the exact same forwarding behavior.






37. A Cisco IOS configuration tool for routing protocols by which routing updates may be filtered.






38. Link-state advertisement.






39. Feasible distance.






40. A mapping between each DSCP value and a corresponding CoS value - often used in Cisco LAN switches when performing classification for egress queuing.






41. A DiffServ PHB that defines eight values that provide backward compatibility with IP Precedence.






42. Operates in dense mode and depends on its own unicast routing protocol that is similar to RIP to perform its multicast functions.






43. Also known as triggered updates.






44. Sent by a PIM router to its upstream router to either request that the upstream router forward the group traffic or stop forwarding the group traffic that is currently being forwarded. If a PIM router wants to start receiving the group traffic - it l






45. Dynamic Trunking Protocol.






46. A BGP router in an AS that uses route reflectors - but that is not aided by any RR server.






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






48. A NAT term describing an IP address representing a host that resides inside the enterprise network - with the address being used in packets outside the enterprise network.






49. A group of devices on one or more LANs that are configured (using management software) so that they can communicate as if they were attached to the same wire - when - in fact - they are located on a number of different LAN segments. Because VLANs are






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