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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. Distance Vector Multicast Routing Protocol.






2. The range 232.0.0.0 through 232.255.255.255 that is allocated by IANA for SSM destination addresses and is reserved for use by source-specific applications and protocols.






3. The MPLS feature by which an ingress E-LSR copies the IP packet's IP TTL field into the MPLS header's TTL field.






4. UniDirectional Link Detection.






5. In IPv6 - a Router Advertisement message used by an IPv6 router to send information about itself to nodes and other routers connected to that router.






6. On a single computer - one layer provides a service to a higher layer. The software or hardware that implements the higher layer requests that the next lower layer perform the needed function.






7. An MPLS term referring to the first of several labels when an MPLS-forwarded packet has multiple labels (a label stack).






8. Address Resolution Protocol. Defined in RFC 826 - a protocol used on LANs so that an IP host can discover the MAC address of another device that is using a particular IP address.






9. An IPv6 migration strategy in which a host or router supports both IPv4 and IPv6 natively.






10. Aka Rapid Per-VLAN Spanning Tree Plus.






11. 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.






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






13. Priority queue and priority queuing.






14. Port Address Translation.






15. A queuing scheduler concept - much like CQ's scheduler - in which queues are given some service in sequence. This term is often used with queuing in Cisco LAN switches.






16. A routing protocol feature by which the routing update includes the entire set of routes - even if some or all of the routes are unchanged.






17. A multicast routing protocol whose default action is to flood multicast packets throughout a network.






18. Network Address Translation.






19. 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






20. Any occurrence that could change a router's EIGRP topology table - including a received Update or Query - a failed interface - or the loss of a neighbor.






21. A type of logic for how a router uses a default route. When a default route exists - and no more specific match is made between the destination of the packet and the routing table - the default route is used.






22. 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.






23. 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.






24. The process of taking routes known through one routing protocol and advertising those routes with another routing protocol.






25. Ethernet MAC address that represents all devices on the LAN.






26. Maximum transmission unit.






27. A BGP path attribute that is communicated throughout a single AS to signify which route of multiple possible routes is the best route to be taken when leaving that AS. A larger value is considered to be better.






28. The IP address to which Label Distribution Protocol (LDP) sends LDP Hellos. Also used in IP multicast to send packets to all multicast routers.






29. An IEEE standard that - when used with EAP - provides user authentication before their connected switch port allows the device to fully use the LAN.






30. Spanning Tree Protocol.






31. Policing in which a single rate is metered - and packets are placed into one of three categories (conform - exceed - or violate).






32. A bit in the ATM cell header that - when set to 1 - means that if a device needs to discard frames - it should discard the frames with DE 1 first.






33. A T1 alarm state that occurs when a device receives a Yellow Alarm signal. This typically means that the device on the other end of the line is in a Red Alarm state.






34. Variable-length subnet masking.






35. Frame Relay Forum.






36. Defined in RFC 1631 - a method of translating IP addresses in headers with the goal of allowing multiple hosts to share single public IP addresses - thereby reducing IPv4 public address depletion.






37. In the context of SNMP - the Trap command is sent by an SNMP agent - to a manager - when the agent wants to send unsolicited information to the manager. Trap is not followed by a Response message from the receiving SNMP manager.






38. Port Aggregation Protocol.






39. A Layer 3 forwarding path through a router that does not optimize the forwarding path through the router.






40. A neighbor state that signifies the other router has reached neighbor status - having passed the parameter check.






41. A type of OSPF packet - used to communicate LSAs to another router.






42. A Cisco IOS queuing tool most notable for its scheduler - which always services the high-priority queue over all other queues.






43. On a multiaccess network - when a PIM-DM or PIM-SM router receives a Prune message - it starts a 3-second timer. If it receives a Join message on the multiaccess network from another router before the timer expires - it considers the message as an ov






44. An ITU standard Frame Relay header - including the DLCI - DE - FECN - and BECN bits in the LAPF header - and a frame check in the LAPF trailer.






45. 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






46. Route Target.






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






48. Aka network layer reachability information.






49. In shaping and policing - the definition of parameters that together imply the allowed rate and bursts.






50. Weighted random early detection.