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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. Flush timer.






2. A set of all devices that receive broadcast frames originating from any device within the set. Devices in the same VLAN are in the same broadcast domain.






3. A route that is created to represent one or more smaller component routes - typically in an effort to reduce the size of routing and topology tables.






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






5. 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.






6. Network Layer Protocol ID is a field in the RFC 2427 header that is used as a Protocol Type field in order to identify the type of Layer 3 packet encapsulated inside a Frame Relay frame.






7. A Cisco-proprietary protocol - used by LAN switches to communicate VLAN configuration.






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






9. An attack by which the attacker initiates many TCP connections to a server - but does not complete the TCP connections - by simply not sending the third segment normally used to establish the connection. The server may consume resources and reject ne






10. 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.






11. A calculation of the length of the AS_PATH PA - which includes 1 for each number in the AS_SEQ - 1 for an entire AS_SET segment - and possibly other considerations.






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






13. The RMON function of sending a notification to an RMON collector or the console. Triggered by an RMON event.






14. RFC 1918-defined IPv4 network numbers that are not assigned as public IP address ranges - and are not routable on the Internet. Intended for use inside enterprise networks.






15. The two computers use a protocol with which to communicate with the same layer on another computer. The protocol defined by each layer uses a header that is transmitted between the computers to communicate what each computer wants to do.






16. A state variable kept by a router for each known neighbor or potential neighbor.






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






18. Request-to-send/clear-to-send.






19. IP multicast address range from 224.0.0.0 through 239.255.255.255.






20. An MPLS VPN term referring to any LSR that connects to customers to support the forwarding of unlabeled packets - as well as connecting to the MPLS network to support labeled packets - thereby making the LSR be on the edge between the provider and th






21. In the context of SNMP - the GetNext command is sent by an SNMP manager - to an agent - requesting the value of a single MIB variable. The GetNext request identifies a variable for which the manager wants the variable name and value of the next MIB l






22. Defined in RFC 3748 - the protocol used by IEEE 802.1X for exchanging authentication information.






23. Diffusing Update Algorithm.






24. 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.






25. A multicast routing protocol that operates in dense mode and depends on the OSPF unicast routing protocol to perform its multicast functions.






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






27. Backward Explicit Congestion Notification.






28. An optional nontransitive BGP path attribute that lists the route reflector cluster IDs through which a route has been advertised - as part of a loop-prevention process similar to the AS_PATH attribute.






29. A WRED process by which WRED does not discard packets during times in which a queue's minimum threshold has not been passed.






30. Another name for 802.1Q-in-Q. See 802.1Q-in-Q.






31. In the context of SNMP - the Set command is sent by an SNMP manager - to an agent - requesting that the agent set a single identified variable to the stated value. The main purpose is to allow remote configuration and remote operation - such as shutt






32. A convention for IP addresses in which class A - B - and C default network prefixes (of 8 - 16 - and 24 bits - respectively) are ignored.






33. Multiple Spanning Trees.






34. VTP process that prevents the flow of broadcasts and unknown unicast Ethernet frames in a VLAN from being sent to switches that have no ports in that VLAN.






35. A message sent by each host - either in response to a router Query or on its own - to all multicast groups for which it would like to receive multicast traffic.






36. Time to Live.






37. The common set of IOS configuration commands that is used with each QoS feature whose name begins with "Class-Based."






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






39. In MPLS - a term used to define a label that an LSR allocates and then advertises to neighboring routers. The label is considered "local" on the router that allocates and advertises the label.






40. A T1 alarm state that occurs when the receiver can no longer consistently identify the frame.






41. A characterization of a BGP path attribute in which all BGP implementations must support and understand the attribute (well known) - but BGP Updates can either include the attribute or not depending on whether a related feature has been configured (d






42. 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.






43. A Cisco-proprietary LMI protocol - implemented in Cisco WAN switches and routers - through which the switch can inform the router about parameters for each VC - including CIR - Bc - and Be.






44. The original standardized set of generic SNMP MIB variables - defined in RFC 1158.






45. An FRTS configuration construct - configured with the map-class frame-relay global configuration command.






46. 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.






47. The first 48 bits of an IPv6 global address - used for efficient route aggregation.






48. 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.






49. 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






50. An MQC-based feature of IOS that is used to classify and mark packets for QoS purposes.