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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 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.






2. Custom queuing






3. 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.






4. Temporal Key Integrity Protocol.






5. Also known as triggered updates.






6. A wireless LAN physical layer that operates at up to 54-Mbps data rates using OFDM in the 5-GHz band.






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






8. A term used with WFQ for the number assigned to a packet as it is enqueued into a WFQ queue. WFQ schedules the currently lowest FT packet next.






9. The initial 802.11 common key encryption mechanism; vulnerable to hackers.






10. An optional transitive BGP path attribute that - for a summary route - lists the BGP RID and ASN of the router that created the summary.






11. In IPv6 - the Neighbor Discovery message used by an IPv6 node to request information about a neighbor or neighbors.






12. An E-LSR in an MPLS VPN network whose role in a particular discussion is to receive unlabeled packets over customer links and then forward the packets as labeled packets into the MPLS network.






13. A wireless LAN that includes the use of access points. Infrastructure mode connects wireless users to a wired network and allows wireless users to roam throughout a facility between different access points. All 802.11 data frames in an infrastructure






14. The RFC-standard MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. See also TDP.






15. From a Layer 1 perspective - the process of using special strings of electrical signals over a transmission medium to inform the receiver as to which bits are overhead bits - and which fit into individual subchannels.






16. A 3-bit field in an 802.1Q header used for marking frames.






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






18. 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






19. A state for a route in an EIGRP topology table that indicates that the router believes that the route is stable - and it is not currently looking for any new routes to that subnet.






20. An MPLS term referring to the MPLS label just before the IP header. Also called the VPN label when implementing MPLS VPNs.






21. A BGP message that includes withdrawn routes - path attributes - and NLRI.






22. For some encoding schemes - consecutive signals must use opposite polarity in an effort to reduce DC current. A BPV occurs when consecutive signals are of the same polarity.






23. On a serial cable - the pin lead set by the DCE to imply a working link.






24. 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.






25. The data structure used by OSPF to hold LSAs.






26. 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.






27. A switch feature that limits the number of allowed MAC addresses on a port - with optional limits based on the actual values of the MAC addresses.






28. Each 802.11 station passively monitors each RF channel for a specific amount of time and listens for beacons. Stations use the signal strengths of found beacons to determine the access point or ad hoc network with which to attempt association.






29. A protocol used for reliable multicast and unicast transmissions. Used by EIGRP.






30. Dynamic Host Configuration Protocol.






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






32. Diffusing Update Algorithm.






33. 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






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






35. An IPv6/IPv4 tunneling method that allows isolated IPv6 domains to be connected over an IPv4 network.






36. Border Gateway Protocol.






37. A logical group of content engines running WCCP between them. The lead content engine determines the traffic distribution within the cluster - for optimum performance and scalability.






38. Dynamic ARP Inspection.






39. Label Switch Router.






40. Defined in IEEE 802.1d - a protocol used on LAN bridges and switches to dynamically define a logical network topology that allows all devices to be reached - but prevents the formation of loops.






41. A term generally describing characteristics about BGP paths that are advertised in BGP Updates.






42. Receivers subscribe to an (S -G) channel when they request to join a multicast group. That is - they specify the unicast IP address of their multicast source and the group multicast address. SSM is typically used in very large multicast deployments s






43. With Spanning Tree Protocol - the single port on each LAN segment from which the best Hello BPDU is forwarded.






44. A Cisco IOS configuration tool for routing protocols by which routing updates may be filtered.






45. Auto-Rendezvous Point. Cisco-proprietary protocol that can be used to designate an RP and send RP-Announce messages that advertise its IP address and groups. Also - it can be used to designate a mapping agent that interprets what IP address RP is adv






46. Inside telcos' original TDM hierarchy - a unit that combines multiple DS0s into a single channel






47. Loss of Frame.






48. Forward Explicit Congestion Notification.






49. Ethernet feature in which a NIC or Ethernet port can both transmit and receive at the same instant in time. It can be used only when there is no possibility of collisions. Loopback circuitry on NIC cards is disabled to use full duplex.






50. IP multicast address range from 224.0.0.0 through 239.255.255.255.