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CCIE Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 NAT term describing an IP address representing a host that resides inside the enterprise network - with the address being used in packets outside the enterprise network.






2. Dynamic Host Configuration Protocol.






3. Cisco-proprietary STP feature in which a switch port - known to not have a bridge or switch attached to it - transitions from disabled to forwarding state without using any intermediate states.






4. 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.






5. An EIGRP message that is used to ask neighboring routers to verify their route to a particular subnet. Query messages require an Ack.






6. Router-Port Group Management Protocol.






7. The one VLAN on an 802.1Q trunk for which the endpoints do not add the 4-byte 802.1Q tag when transmitting frames in that VLAN.






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. 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.






10. Burst With shaping and policing - the number of additional bits that may be sent after a period of relative inactivity.






11. UniDirectional Link Detection.






12. On a serial cable - the pin lead set by the DTE to tell the DCE that the DTE wants to send data.






13. A technology that sends a high-speed data stream over multiple subcarriers simultaneously. It is highly immune to multipath interference. 802.11a and 802.11g specify the use of OFDM.






14. Neighbor Solicitation.






15. Shaped round-robin.






16. A table used by CEF that holds information about adjacent IP hosts to which packets can be forwarded.






17. Area Border Router. An OSPF router that connects to the backbone area and to one or more non-backbone areas.






18. An EIGRP router's reaction to an input event - leading to the use of a feasible successor or going active on a route.






19. Challenge Handshake Authentication Protocol.






20. Common Spanning Tree.






21. A network/subnet to which only one OSPF router is connected.






22. A term used with Cisco LAN switches - referring to a DSCP value used when making QoS decisions about a frame. This value may not be the actual DSCP value in the IP header encapsulated inside the frame.






23. In OSPF - a router that is prepared to take over the designated router.






24. A list of interspersed alphanumeric literals and metacharacters that are used to apply complex matching logic to alphanumeric strings. Often used for matching AS_PATHs in Cisco routers.






25. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised outside the local confederation sub-AS.






26. A BGP ASN whose value is between 64 -512 and 65 -535. These values are not assigned for use on the Internet - and can be used for private purposes - typically either within confederations or by ISPs to hide the ASN used by some customers.






27. A BGP feature that defines the IP TTL field value in packets sent between two eBGP peers. This feature is required when using IP addresses other than the interface IP address on the link between peers.






28. With OSPF - the encapsulation of OSPF messages inside IP - to a router with which no common subnet is shared - for the purpose of either mending partitioned areas or providing a connection from some remote area to the backbone area.






29. Defines a particular behavior for FTP regarding the establishment of data TCP connections. In active mode - the FTP client uses the FTP PORT command - over the FTP control connection - to tell the FTP server the port on which the client should be lis






30. 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.






31. A bit in the LAPF Frame Relay header that - when set to 1 - implies that the frame has experienced congestion.






32. A Cisco IOS queuing tool most notable for its reservation of a minimum bandwidth for each queue.






33. Authentication - authorization - and accounting.






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






35. 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.






36. In MQC and CB Policing - a configuration style by which - for one category of packets (conform - exceed - or violate) - more than one marking action is defined for a single category. For example - marking DSCP and DE.






37. Data Terminal Ready.






38. 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.






39. With RIP - the advertisement of a poisoned route out an interface - when that route was formerly not advertised out that interface due to split horizon rules.






40. An OSPF external route for which internal OSPF cost is not added to the cost of the route as it was redistributed into OSPF.






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






42. The practice of defining boundaries that determine how far multicast traffic will travel in your network.






43. 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.






44. A Cisco IOS feature that provides reporting information to a NetFlow aggregator based on traffic flows.






45. In the context of SNMP - the Inform command is sent by an SNMP manager to communicate a set of variables - and their values - to another SNMP manager. The main purpose is to allow multiple managers to exchange MIB information - and work together - wi






46. A single instance of STP that is applied to multiple VLANs - typically when using the 802.1Q trunking standard.






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






48. Alarm Indication Signal. With T1s - the practice of sending all binary 1s on the line in reaction to problems - to provide signal transitions and allow recovery of synchronization and framing.






49. With private VLANs - a secondary VLAN in which the ports can send and receive frames only with promiscuous ports in the primary VLAN.






50. An 802.1d STP transitory port state in which the port does not send or receive frames - but does learn the source MAC addresses from incoming frames.







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