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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 logical concept that represents the path over which frames travel between DTEs. VCs are particularly useful when comparing Frame Relay to leased physical circuits.






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






3. In two-rate policing - the second and higher rate defined to the policer.






4. A local Cisco-proprietary BGP setting that is not advertised to any peers. A larger value is considered to be better.






5. Cisco Wireless LAN Solution Engine.






6. A PPP feature used to load balance multiple parallel links at Layer 2 by fragmenting frames - sending one frame over each of the links in the bundle - and reassembling them at the receiving end of the link.






7. Database Description.






8. An intrusion detection system that safeguards the wireless LAN from malicious and unauthorized access.






9. The difference between the measured signal power and the noise power that a particular receiver sees at a given time. Higher SNRs generally indicate better performance.






10. 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.






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






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






13. 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.






14. An MPLS VPN term referring to an LSR that has no direct customer connections - meaning that the P router does not need any visibility into the VPN customer's IP address space.






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






16. 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.






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






18. The process of successive neighboring routers exchanging LSAs such that all routers have an identical LSDB for each area to which they are attached.






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






20. Source-specific multicast.






21. A feature of Ethernet NICs. When the NIC transmits an electrical signal - it "loops" the transmitted electrical current back onto the receive pair. By doing so - if another NIC transmits a frame at the same time - the NIC can detect the overlapping r






22. The PPP function for fragmenting packets - plus interleaving delay-sensitive later-arriving packets between the fragments of the first packet.






23. Loss of Signal. A T1 alarm state that occurs when the receiver has not received any pulses of either polarity for a defined time period.






24. A set of four hex digits listed in an IPv6 address. Each quartet is separated by a colon.






25. A term referring to the MQC policy-map command and its related subcommands - which are used to apply QoS actions to classes of packets.






26. A BGP feature by which a router learns iBGP routes - and then forwards them to other iBGP peers - reducing the required number of iBGP peers while also avoiding routing loops.






27. A Cisco IOS configuration tool - using the ip as-path access-list command - that defines a list of statements that match the AS_PATH BGP path attribute using regular expressions.






28. Link-state database.






29. Cisco-proprietary STP feature in which a switch port monitors for STP BPDUs of any kind - err-disabling the port upon receipt of any BPDU.






30. Defined in RFC 2091 - the extensions define how RIP may send a full update once - and then send updates only when routes change - when an update is requested - or when a RIP interface changes state from down to up.






31. 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






32. 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.






33. A mapping between each DSCP value and a WRED threshold - often used in Cisco LAN switches when performing WRED.






34. A DiffServ PHB - based on DSCP EF (decimal 46) - that provides low-latency queuing behavior as well as policing protection to prevent EF traffic from starving queues for other types of traffic.






35. Aka network layer reachability information.






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






37. An IOS feature in which multiple routing tables and routing forwarding instances exist in a single router - with interfaces being assigned to one of the several VRFs. This feature allows separating of routing domains inside a single router platform.






38. When multiple routers are connected to a subnet - only one should be sending IGMP queries. It is called a querier. IGMPv1 does not have any rules for electing a querier. In IGMPv2 and IGMPv3 - a router with the lowest interface IP address on the subn






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






40. An enhanced version of WEP that is part of the 802.11i standard and has an automatic key-update mechanism that makes it much more secure than WEP. TKIP is not as strong as AES in terms of data protection.






41. Cisco-proprietary STP feature in which an access layer switch is configured to be unlikely to become Root or to become a transit switch. Also - convergence upon the loss of the switch's Root Port takes place in a few seconds.






42. Frequency hopping spread spectrum.






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






44. Time Interval.






45. From the perspective of one routing protocol - a route that was learned by using route redistribution.






46. With EIGRP - a route that is not a successor route - but that meets the feasibility condition; can be used when the successor route fails - without causing loops.






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






48. 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






49. Bipolar Violation.






50. The portion of PPP focused on features that are unrelated to any specific Layer 3 protocol.