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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. Weighted tail drop.






2. Extensible Authentication Protocol.






3. With EIGRP - the timer used to determine when a neighboring router has failed - based on a router not receiving any EIGRP messages - including Hellos - in this timer period.






4. With RIP - the regular interval at which updates are sent. Each interface uses an independent timer - defaulting to 30 seconds.






5. Defined in IEEE 802.1s - a specification for multiple STP instances when using 802.1Q trunks






6. 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.






7. An FRF standard for Frame Relay-to-ATM Service Interworking in which both DTEs use Frame Relay - with ATM in between.






8. The OSPF data structure that describes topology information.






9. A calculated TCP variable - used along with the TCP CWND variable - to dictate a TCP sender's behavior when it recognizes packet loss. As CWND grows after packet loss - the TCP sender increases CWND based on Slow Start rules - until CWND grows to be






10. 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.






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






12. The combination of PVST+ and Rapid Spanning Tree. It provides subsecond convergence time and is compatible with PVST+ and MSTP.






13. Aka receiver's advertised window.






14. An MPLS term referring to the first of several labels when an MPLS-forwarded packet has multiple labels (a label stack).






15. The process of taking the IP and TCP headers of a packet - compressing them - and then uncompressing them on the receiving router.






16. A dotted-decimal number used to help define the structure of an IP address. The binary 0s in the mask identify the host portion of an address - and the binary 1s identify either the combined network and subnet part (when thinking classfully) or the n






17. Multilink PPP.






18. Penultimate hop popping.






19. 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.






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






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 A BGP message that includes withdrawn routes - path attributes - and NLRI.






22. Extended Superframe.






23. The speed at which the access link is clocked. This choice affects the price of the connection and many aspects of traffic shaping and policing - compression - quality of service - and other configuration options.






24. Often used synonymously with neighbor - but with emphasis on the fact that all required parameters match - allowing routing updates to be exchanged between the routers.






25. 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.






26. An STP timer that dictates how long a switch should wait when it ceases to hear Hellos.






27. In shaping and policing - commonly used to refer to the shaping or policing rate. For WAN services - a common reference to the bit rate defined in the WAN service business contract for each VC.






28. The portion of PPP focused on supporting the CDP protocol.






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






30. Forwarding Information Base.






31. The process of taking the IP - UDP - and RTP headers of a voice or video packet - compressing them - and then uncompressing them on the receiving router.






32. A type of spread spectrum that spreads RF signals over the frequency spectrum by transmitting the signal at different frequencies according to a hopping pattern. One of the original 802.11 physical layers used FHSS to offer data rates of 1 and 2 Mbps






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






34. A serial-line encoding standard that sends alternating positive and negative 3-volt signals for binary 1 - and no signal (0 V) for binary 0.






35. Secure Shell protocol used for character-oriented command-line access and configuration. A highly secure alternative to Telnet.






36. Provider edge.






37. 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.






38. A 3-bit field in the first 3 bits of the ToS byte in the IP header - used for QoS marking.






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






40. Bootstrap Router.






41. 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.






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






43. Protects against problems caused by unidirectional links between two switches. Watches for loss of received Hello BPDUs - in which case it transitions to a loop-inconsistent state instead of transitioning to a forwarding state.






44. High Density Binary 3.






45. 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.






46. 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.






47. A type of spread spectrum that spreads RF signals over the frequency spectrum by representing each data bit by a longer code. 802.11b specifies the use of DSSS.






48. An exterior routing protocol that predates BGP. It is no longer used today.






49. A term referring generically to ways in which a router or switch can determine whether a particular device or user should be allowed access.






50. A Cisco switch feature that allows separation of ports as if they were in separate VLANs - while allowing the use of a single IP subnet for all ports.







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