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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 alternative software loaded into a Cisco router - used for basic IP connectivity; most useful when Flash memory is broken and you need IP connectivity to copy a new IOS image into Flash memory.






2. In two-rate policing - the second and higher rate defined to the policer.






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






4. The second most significant bit in the most significant byte of an Ethernet MAC address - a value of binary 0 implies that the address is a Universally Administered Address (UAA) (also known as Burned-In Address [BIA]) - and a value of binary 1 impli






5. The rate at which a shaper limits the bits exiting the shaper.






6. Timer An STP timer that dictates how long a port should stay in the listening state and the learning state.






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






8. The router in a VRRP group that is currently actively forwarding IP packets. Conceptually the same as an HSRP Active router.






9. A single address in each subnet for which packets sent to this address will be broadcast to all hosts in the subnet. It is the highest numeric value in the range of IP addresses implied by a subnet number and prefix/mask.






10. Often used synonymously with neighbor - but with emphasis on the fact that all required parameters match - allowing routing updates to be exchanged between the routers.






11. 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.






12. 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.






13. Any OSPF neighbor for which the database flooding process has completed.






14. Permanent virtual circuit.






15. 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






16. With DiffServ - a DSCP marking and a related set of QoS actions applied to packets that have that marking.






17. The multicast addresses assigned by IANA.






18. Another term for summary route.






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






20. A TCP variable used as the basis for a TCP sender's timer defining how long it should wait for a missing acknowledgement before resending the data.






21. In MPLS - a term used to define a label that an LSR learned from a neighboring LSR.






22. A standards-based way of helping routers find Rendezvous Points (RP). RPs notify BSRs of the groups they handle. BSRs in turn flood the group-to-RP mappings throughout the network. Each router individually determines which RP to use for a particular






23. A term relating to Cisco LAN switch tail-drop logic - in which multiple tail-drop thresholds may be assigned based on CoS or DSCP - resulting in some frames being discarded more aggressively than others.






24. Link-State Acknowledgment.






25. Sent by a PIM router - by default every 30 seconds - on every interface on which PIM is configured to discover neighbors - establish adjacency - and maintain adjacency.






26. A type of AS_PATH segment consisting of an ordered list of ASNs through which the route has been advertised.






27. An MQC configuration style by which one policy map calls a second policy map. For example - a shaping policy map can call an LLQ policy map to implement LLQ for packets shaped by CB Shaping.






28. Data-link connection identifier.






29. A table inside a router that holds the path attributes and NLRI known by the BGP implementation on that router.






30. Multicast addresses that are not assigned by IANA.






31. A Frame Relay address used in Frame Relay headers to identify the VC






32. Wired Equivalent Privacy.






33. A predefined VC. A PVC can be equated to a leased line in concept.






34. 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.






35. Reverse ARP.






36. A well-known discretionary BGP path attribute that flags a route as being a summary route.






37. 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.






38. Sending a message from a single source or multiple sources to selected multiple destinations across a Layer 3 network in one data stream.






39. Modified Deficit Round-Robin.






40. Data Terminal Ready.






41. A specification for the 64-bit interface ID in an IPv6 address - composed of the first half of a MAC address - hex FFFE - and the last half of the MAC.






42. Time to Live.






43. An NTP mode in which two or more NTP servers mutually synchronize their clocks.






44. A Cisco-proprietary feature by which multiple routers can provide interface IP address redundancy so that hosts using the shared - virtual IP address as their default gateway can still reach the rest of a network even if one or more routers fail.






45. The IP address used by hosts as the default gateway in a VRRP configuration. This address is shared by two or more VRRP routers - much as HSRP works.






46. Layer x PDU.






47. 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.






48. An enhanced version of WEP that is part of the 802.11i standard and has an automatic key-update mechanism that makes it much more secure than WEP. TKIP is not as strong as AES in terms of data protection.






49. A VC that is set up dynamically when needed. An SVC can be equated to a dial-on-demand connection in concept.






50. A bit inside the Frame Relay header that - when set - implies that congestion occurred in the direction opposite (or backward) as compared with the direction of the frame.