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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 for how a TCP sender grows its calculated CWND variable - thereby growing the allowed window for the connection. Slow Start grows CWND at an exponential rate.






2. 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.






3. Context-Based Access Control.






4. With RIP - a per-route timer that increases until the router receives a routing update that confirms the route is still valid - upon which the timer is reset to 0. If the updates cease - the Invalid timer will grow - until reaching the timer setting






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






6. 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.






7. The process of taking the IP and TCP headers of a packet - compressing them - and then uncompressing them on the receiving router.






8. Voice over Frame Relay.






9. The low-order 4 bits of the configuration register. These bits direct a router to load either ROMMON software (boot field 0x0) - RXBOOT software (boot field 0x1) - or a full-function IOS image.






10. 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.






11. A Cisco IOS queuing tool most notable for its automatic classification of packets into separate per-flow queues.






12. The original MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. It is slightly different from LDP - but functionally equivalent. See also LDP.






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






14. The process of successive neighboring routers exchanging LSAs such that all routers have an identical LSDB for each area to which they are attached.






15. Aka receiver's advertised window.






16. Extensible Authentication Protocol.






17. Multicast addresses that are not assigned by IANA.






18. 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.






19. The underlying algorithms associated with RIP.






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






21. A small FIFO queue associated with each router's physical interface - for the purpose of making packets available to the interface hardware - removing the need for a CPU interrupt to start sending the next packet out the interface.






22. A T1 alarm state that occurs when a device has detected a local LOF/LOS/AIS condition. The device in Red alarm state then sends a Yellow alarm signal.






23. Service set identifier.






24. 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.






25. Link-State Refresh. A timer that determines how often the originating router should reflood an LSA - even if no changes have occurred to the LSA.






26. A wireless LAN physical layer that is backward compatible with 802.11b and operates at up to 54-Mbps data rates using OFDM in the 2.4-GHz band.






27. 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.






28. The process of taking a PDU from some other source and placing a header in front of the original PDU - and possibly a trailer behind it.






29. Extended Superframe.






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






31. A Cisco-proprietary protocol used to dynamically negotiate whether the devices on an Ethernet segment want to form a trunk and - if so - which type (ISL or 802.1Q).






32. A protocol - defined in RFC 2865 - 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.






33. 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.






34. A BGP feature that overcomes the requirement of a full mesh of iBGP peers inside a single AS by separating the AS into multiple sub-autonomous systems.






35. Secure Shell protocol used for character-oriented command-line access and configuration. A highly secure alternative to Telnet.






36. A type of IPv4 and IPv6 traffic designed primarily to provide one-to-many connectivity but unlike broadcast - has the capability to control the scope of traffic distribution.






37. Spanning Tree Protocol.






38. A router that should either permanently or temporarily not be used as a transit router. Can wait a certain time after OSPF process start - or after BGP notifies OSPF that BGP has converged - before ceasing to be a stub router.






39. 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.






40. After a host receives an IGMP Query - the amount of time (default - 10 seconds) the host has to send the IGMP Report.






41. A Cisco IOS configuration tool for RIP and EIGRP for which the list matches routes in routing updates - and adds a defined value to the sent or received metric for the routes. The value added to the metric is the offset.






42. 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.






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






44. 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






45. Policing in which two rates are metered - and packets are placed into one of three categories (conform - exceed - or violate).






46. UniDirectional Link Detection.






47. A technology that enables frequency reuse. Two variants exist: frequency hopping (FHSS) and direct sequence (DSSS). Both techniques spread the signal power over a relatively wide portion of the frequency spectrum over time - to reduce interference be






48. The process of combining multiple synchronized input signals over a single medium by giving each signal its own time slot - and then breaking out those signals.






49. Differentiated Services.






50. 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.