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






2. The definitions for a particular set of data variables - with those definitions following the SMI specifications. See also SMI.






3. When a wireless station connects to an access point - the access point assigns an association ID (AID) to the station. Various protocols - such as power-save mode - make use of the association ID.






4. A name used for DS1 lines inside the North American TDM hierarchy.






5. An E-LSR in an MPLS VPN network whose role in a particular discussion is to receive labeled packets from other LSRs and then forward the packets as unlabeled packets to CE routers.






6. EAP over LAN.






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






8. An 802.1d STP port state in which the port does not send or receive frames - except for listening for received Hello BPDUs.






9. A field in the IP header that is decremented at each pass through a Layer 3 forwarding device.






10. A Cisco IOS queuing tool that uses MQC configuration commands - reserves a minimum bandwidth for some queues - provides high-priority scheduling for some queues - and polices those queues to prevent starvation of lower-priority queues during interfac






11. Cisco-proprietary VLAN trunking protocol.






12. The operating mode of shaped round-robin that provides a low-latency queue with policing.






13. Tag Distribution Protocol.






14. 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).






15. Bipolar 8 Zero Substitution. A serial-line encoding standard that substitutes Bipolar Violations in a string of eight binary 0s to provide enough signal transitions to maintain synchronization.






16. Expedited Forwarding.






17. A 3-bit field in an MPLS header used for marking frames.






18. With routing protocols - the process by which the router receiving a routing update determines if the routing update came from a trusted router.






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






20. Removing unwanted VLANs from a Layer 2 path.






21. Controls access to the Internet in public wireless LANs.






22. Access Control Entry. An individual line in an ACL.






23. 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.






24. An exterior routing protocol designed to exchange prefix information between different autonomous systems. The information includes a rich set of characteristics called path attributes - which in turn allows for great flexibility regarding routing ch






25. A queuing tool's logic by which it selects the next packet to dequeue from its many queues.






26. With EIGRP - a purposefully slowly changing measurement of round-trip time between neighbors - from which the EIGRP RTO is calculated.






27. Differentiated Services Code Point.






28. 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.






29. A dotted-decimal number that represents a subnet. It is the lowest numeric value in the range of IP addresses implied by a subnet number and prefix/mask.






30. A BGP router in an AS that uses route reflectors - but that is not aided by any RR server.






31. A Cisco IOS configuration tool that can be used to match routing updates based on a base network address - a prefix - and a range of possible masks used inside the values defined by the base network address and prefix.






32. An administrative setting - included in Hellos - that is the first criteria for electing a DR. The highest priority wins - with values from 1-255 - with priority 0 meaning a router cannot become DR or BDR.






33. An MPLS LSR that can forward and receive both labeled and unlabeled packets.






34. The term referring to a group of iBGP routers in a confederation - with the group members being assigned a hidden ASN for the purposes of loop avoidance.






35. The single port on each nonroot switch upon which the best Hello BPDU is received.






36. A numeric value between 0 and 32 (inclusive) that defines the number of beginning bits in an IP address for which all IP addresses in the same group have the same value. Alternative: The number of binary 1s beginning a subnet mask - written as a deci






37. An integer setting for EIGRP and IGRP. Any FS route whose metric is less than this variance multiplier times the successor's metric is added to the routing table - within the restrictions of the maximum-paths command.






38. 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.






39. Defined in FRF.11 - an FR VC that uses a slightly varied header - as compared with FRF.3 data VCs - to accommodate voice payloads directly encapsulated inside the Frame Relay LAPF header.






40. Reduces the bandwidth necessary for radio management information - such as access point status messages - that is sent across the network by eliminating redundant management information.






41. Data communications equipment.






42. Distance Vector Multicast Routing Protocol.






43. The protocol used by content engines to manage traffic flow between routers configured for WCCP and between content engines. WCCP takes advantage of the fact that many web pages (and other content) are regularly accessed by users in a given network.






44. A mechanism used by TCP senders to limit the dynamic window for a TCP connection - to reduce the sending rate when packet loss occurs. The sender considers both the advertised window size and CWND - using the smaller of the two.






45. Layer 2 payload compression.






46. An IPv6 address type that is used by a number of hosts in a network that are providing the same service. Hosts accessing the service are routed to the nearest host in an anycast environment based on routing protocol metrics.






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






48. IP multicast address range from 224.0.0.0 through 239.255.255.255.






49. A mechanism that counters collisions caused by hidden nodes. If enabled - the station or access point must first send an RTS frame and receive a CTS frame before sending each data frame.






50. Low-latency queuing.