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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. Software-based collection and reporting tool for data reported by NetFlow.






2. 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






3. An optional transitive BGP path attribute used to store 32-bit decimal values. Used for flexible grouping of routes by assigning the group the same COMMUNITY value. Other routers can apply routing policies based on the COMMUNITY value. Used in a larg






4. The second byte of the IP header - formerly known as the ToS byte and redefined by DiffServ.






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






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






7. Data Carrier Detect.






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 A BGP message that includes withdrawn routes - path attributes - and NLRI.






9. 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.






10. Also known as triggered updates.






11. The feature in a Cisco IOS device by which a terminal session's previously typed commands are remembered - allowing the user to recall the old commands to the command line through a simple key sequence (for example - the up-arrow key).






12. Typically used by protocols that perform flow control (like TCP) - a TCP window is the number of bytes that a sender can send before it must pause and wait for an acknowledgement of some of the yet-unacknowledged data.






13. Virtual LAN.






14. A BGP process by which a router reapplies routing policy configuration (route maps - filters - and the like) based on stored copies of sent and received BGP Updates.






15. Message sent by a PIM-DM router to a downstream router when it receives a Graft message from the downstream router; sent using the unicast address of the downstream router.






16. Inside telcos' original TDM hierarchy - a unit that combines multiple DS1s into a single channel






17. 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.






18. The process of installing a multicast application; also referred to as launching an application.






19. In switch port security - the process whereby the switch dynamically learns the MAC address(es) of the device(s) connected to a switch port - and then adds those addresses to the running configuration as allowed MAC addresses for port security.






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






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






22. A type of OSPF NSSA area for which neither external (type 5) LSAs are introduced - nor type 3 summary LSAs; instead - the ABRs originate and inject default routes into the area. External routes can be injected into a totally NSSA area.






23. Out of Frame.






24. In MPLS VPNs - a 64-bit Extended Community path attribute attached to a BGP route for the purpose of controlling into which VRFs the route is added.






25. Method by which a dense-mode routing protocol distributes multicast traffic from a source to all the segments of a network. Also called shortest-path tree (SPT) - because it uses the shortest routing path from the source to the segments of the networ






26. A possible side effect of a scheduler that performs strict-priority scheduling of a queue - which can result in lower-priority queues getting little or no service.






27. A BGP path attribute that implies how the route was originally injected into some router's BGP table.






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






29. Data-link connection identifier.






30. An OSPF external route for which internal OSPF cost is added to the cost of the route as it was redistributed into OSPF.






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






32. 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






33. A type of AS_PATH segment consisting of an unordered list of ASNs consolidated from component subnets of a summary BGP route.






34. A router that is not an ABR or ASBR in that all of its interfaces connect to only a single OSPF area.






35. Regeneration of the Layer 2 encapsulation removed from frames forwarded in a SPAN session.






36. Dynamic ARP Inspection.






37. A wireless LAN that only includes wireless users and no access points. 802.11 data frames in an ad hoc network travel directly between wireless users.






38. The actual number of packets in a queue at a particular time.






39. A Cisco-proprietary messaging protocol implemented in WAN switches that can be used to signal network status - including congestion - independent of end-user frames and cells.






40. A workstation or server configured to collect and present RMON data for reporting purposes.






41. A type of OSPF packet used to discover neighbors - check for parameter agreement - and monitor the health of another router.






42. Policing in which a single rate is metered - and packets are placed into one of two categories (conform or exceed).






43. With some routing protocols - the time period between successive Hello messages.






44. 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.






45. Point-to-Point Protocol.






46. An 802.1d STP port state in which the port sends and receives frames.






47. 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.






48. A state for a route in an EIGRP topology table that indicates that the router is actively sending Query messages for this route - attempting to validate and learn the current best route to that subnet.






49. A type of OSPF packet used to acknowledge LSU packets.






50. Defines a particular behavior for FTP regarding the establishment of TCP data connections. In passive mode - an FTP server uses the FTP PORT command - over the FTP control connection - to tell the FTP client the port on which the server will be liste