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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. An EIGRP message that is used by neighbors to reply to a query. Reply messages require an Ack.






2. A WRED process by which WRED does not discard packets during times in which a queue's minimum threshold has not been passed.






3. The information maintained by a router for each multicast entry in its multicast routing table - such as incoming interface - outgoing interface list - Uptime timer - Expire timer - etc.






4. A standard (RFC 903) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address. See also ARP.






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






6. A Cisco-proprietary protocol that defines how to perform authentication between an authenticator (for example - a router) and an authentication server that holds a list of usernames and passwords.






7. Aka Rapid Per-VLAN Spanning Tree Plus.






8. A message that each host sends - either in response to a router Query message or on its own - to all multicast groups for which it would like to receive multicast traffic.






9. An OSPF timer that determines how long an LSA can remain in the LSDB without having heard a reflooded copy of the LSA.






10. A term used with Cisco LAN switches - referring to a queue treated with strict-priority scheduling.






11. Multicast Open Shortest Path First.






12. An 802.1d STP port state in which the port sends and receives frames.






13. Neighbor Discovery Protocol.






14. A category used by a policer to classify packets relative to the traffic contract. With two-color policers - these packets are considered to be above the contract; for three-color - these packets are above the Bc setting - but within the Be setting.






15. Per-VLAN Spanning Tree Plus.






16. Link Aggregation Control Protocol.






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






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






19. Defined in RFC 2091 - the extensions define how RIP may send a full update once - and then send updates only when routes change - when an update is requested - or when a RIP interface changes state from down to up.






20. UniDirectional Link Detection.






21. A name used for DS3 lines inside the European TDM hierarchy.






22. Network Control Protocol.






23. With EIGRP - a router sharing the same primary subnet - with which Hellos are exchanged - parameters match - and with which routes can be exchanged.






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






25. 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.






26. An MPLS data structure used for forwarding labeled packets. The LFIB lists the incoming label - which is compared to the incoming packet's label - along with forwarding instructions for the packet.






27. An FRF standard for Frame Relay-to-ATM Service Interworking in which one DTE uses Frame Relay and one uses ATM.






28. 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.






29. A single instance of STP that is applied to multiple VLANs - typically when using the 802.1Q trunking standard.






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






31. The number of bytes in a queue that are removed per cycle in MDRR. Similar to byte count in the custom queuing (CQ) scheduler.






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






33. With RIP - a per-route timer (default 180 seconds) that begins when a route's metric changes to a larger value.






34. The rate at which a policer limits the bits exiting or entering the policer.






35. A mechanism in which VLAN information can extend over another set of 802.1Q trunks by tunneling the original 802.1Q traffic with another 802.1Q tag. It allows a service provider to support transparent VLAN services with multiple customers - even if t






36. An MQC-based feature of IOS that is used to classify and mark packets for QoS purposes.






37. From one multicast router's perspective - the upstream router is another router that has just forwarded a multicast packet to that router.






38. Wi-Fi Protected Access. A security standard that includes both TKIP and AES and was ratified by the Wi-Fi Alliance.






39. A calculated TCP variable - used along with the TCP CWND variable - to dictate a TCP sender's behavior when it recognizes packet loss. As CWND grows after packet loss - the TCP sender increases CWND based on Slow Start rules - until CWND grows to be






40. A queuing scheduler's logic by which - if a particular queue has packets in it - those packets always get serviced next.






41. A TCP variable that defines the largest number of bytes allowed in a TCP segment's Data field. The calculation does not include the TCP header. With a typical IP MTU of 1500 bytes - the resulting default MSS would be 1460. TCP hosts must support an M






42. A method for optimizing the flow of multicast IP packets passing through a LAN switch. The switch using IGMP snooping examines IGMP messages to determine which ports need to receive traffic for each multicast group.






43. A component that interfaces with a phone using IP and provides connections to the Public Switched Telephone Network (PSTN).






44. A basic form of traffic shaping that is applied to an interface or subinterface. By default - it shapes all traffic leaving the interface - but can be modified by using an access control list. The access list controls only what traffic is shaped; GTS






45. Part of the Cisco IOS Firewall feature set - CBAC inspects traffic using information in the higher-layer protocols being carried to decide whether to open the firewall to specific inbound traffic. CBAC supports both UDP and TCP and multiple higher-la






46. Direct sequence spread spectrum.






47. 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.






48. The process of forwarding packets through a router. Also call IP routing.






49. 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.






50. Layer x PDU.