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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. Peak information rate.






2. Jargon referring to a policer action through which - instead of discarding an out-of-contract packet - the policer marks a different IPP or DSCP value - allowing the packet to continue on its way - but making the packet more likely to be discarded la






3. A possible side effect of a scheduler that performs strict-priority scheduling of a queue - which can result in lower-priority queues getting little or no service.






4. 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.






5. Digital Signal Level 0.






6. Enables a wireless client to securely roam between access points in the same subnet or between subnets with access point handoff times within 50 ms.






7. A switch feature with which the switch watches ARP messages - determines if those messages may or may not be part of some attack - and filters those that look suspicious.






8. An MPLS VPN term referring to any LSR that connects to customers to support the forwarding of unlabeled packets - as well as connecting to the MPLS network to support labeled packets - thereby making the LSR be on the edge between the provider and th






9. An STP timer that dictates the interval at which the Root switch generates and sends Hello BPDUs.






10. 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.






11. A logical concept that represents the path over which frames travel between DTEs. VCs are particularly useful when comparing Frame Relay to leased physical circuits.






12. Software-based collection and reporting tool for data reported by NetFlow.






13. Aka network layer reachability information.






14. A message sent by a multicast router - by default every 125 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






15. With EIGRP - the route to each destination for which the metric is the lowest of all known routes to that network.






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






17. Any other router - sharing a common data link - with which a router exchanges Hellos - and for which the parameters in the Hello pass the parameter-check process.






18. A DiffServ PHB - based on DSCP EF (decimal 46) - that provides low-latency queuing behavior as well as policing protection to prevent EF traffic from starving queues for other types of traffic.






19. 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






20. A wireless LAN that offers connections to the Internet from public places - such as airports - hotels - and coffee shops.






21. An 802.1d STP transitory port state in which the port does not send or receive frames - and does not learn MAC addresses - but does wait for STP convergence and for CAM flushing by the switches in the network.






22. 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.






23. An event in which a new packet arrives - needing to be placed into a queue - and the queue is full






24. The multicast IP address 224.0.0.5 - listened for by all OSPF routers.






25. Message sent by a PIM-DM router to its upstream router asking to quickly restart forwarding the group traffic; sent using the unicast address of the upstream router.






26. A term referring to the process of applying the Message Digest 5 (MD5) algorithm to a string - resulting in another value. The original string cannot be easily computed even when the hash is known - making this process a strong method for storing pas






27. A wireless LAN that only includes wireless users and no access points. 802.11 data frames in an ad hoc network travel directly between wireless users.






28. 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.






29. An intrusion detection system that safeguards the wireless LAN from malicious and unauthorized access.






30. A Cisco 12000 series router feature that combines the key features of LLQ and CQ to provide similar congestion-management features.






31. Cisco IOS IP Service Level Agent feature. Provides for router-generated information useful for verifying network performance on a scheduled basis - and the associated reporting functions.






32. 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






33. 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.






34. An OSPF external route for which internal OSPF cost is not added to the cost of the route as it was redistributed into OSPF.






35. A bit in the LAPF Frame Relay header that - when set to 1 - implies that the frame has experienced congestion.






36. A router feature used when a router sees an ARP request searching for an IP host's MAC - when the router believes the IP host could not be on that LAN because the host is in another subnet. If the router has a route to reach the subnet where the ARP-






37. 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.






38. A message sent by a host when it wants to leave a group - addressed to the All Multicast Routers address 224.0.0.2.






39. A mechanism for conserving battery power in wireless stations. The access point buffers data frames destined to sleeping stations - which wake periodically to learn from information in the beacon frame whether or not data frames are waiting for trans






40. Inside telcos' original TDM hierarchy - the smallest unit of transmission at 64 kbps.






41. Three core security functions.






42. Alternate name for the SPF algorithm - named for its inventor - Edsger W. Dijkstra.






43. Multicast addresses that are not assigned by IANA.






44. A numeric value between 0 and 32 (inclusive) that defines the number of beginning bits in an IP address for which all IP addresses in the same group have the same value. Alternative: The number of binary 1s beginning a subnet mask - written as a deci






45. On a serial cable - the pin lead set by the DTE to tell the DCE that the DTE wants to send data.






46. Virtual LAN.






47. Copper cable with RJ-45 connectors in which the wire at pin 1 on one end is connected to pin 1 on the other end; the wire at pin 2 is connected to pin 2 on the other end; and so on.






48. An FRF standard for Frame Relay-to-ATM Service Interworking in which both DTEs use Frame Relay - with ATM in between.






49. The 802.1X driver that supplies a username/password prompt to the user and sends/receives the EAPoL messages.






50. A set of four hex digits listed in an IPv6 address. Each quartet is separated by a colon.