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CCIE Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Digital Signal Level 1.






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






3. A message sent by a router - after receiving a Leave message from a host - to determine whether there are still any active members of the group. The router uses the group address as the destination address.






4. An Internet standard authentication protocol that uses clear-text passwords and a two-way handshake to perform authentication over a PPP link.






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






6. 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).






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






8. The process of taking routes known through one routing protocol and advertising those routes with another routing protocol.






9. An MPLS VPN term referring to a router at a customer site that does not implement MPLS.






10. From one perspective - DTE devices are one of two devices on either end of a communications circuit - specifically the device with less control over the communications. In Frame Relay - routers connected to a Frame Relay access link are DTE devices.






11. A Cisco-proprietary feature by which multiple routers can provide interface IP address redundancy - as well as cause a set of clients to load-balance their traffic across multiple routers inside the GLBP group.






12. Controls the distribution of multicast traffic for the private multicast address range 239.0.0.0 to 239.255.255.255 by configuring a filter and applying it on the interfaces.






13. In shaping and policing - the definition of parameters that together imply the allowed rate and bursts.






14. 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.






15. The process of changing the electrical characteristics on a transmission medium - based on defined rules - to represent data.






16. Digital subscriber line - a common Internet service type for residential and business customers.






17. A specification for the 64-bit interface ID in an IPv6 address - composed of the first half of a MAC address - hex FFFE - and the last half of the MAC.






18. An EIGRP message that is used by neighbors to reply to a query. Reply messages require an Ack.






19. 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






20. 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.






21. Priority queue and priority queuing.






22. The algorithm used by OSPF and IS-IS to compute routes based on the LSDB.






23. A message sent by the multicast router - by default every 60 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






24. An NTP mode in which an NTP host adjusts its clock in relation to an NTP server's clock.






25. An E-LSR in an MPLS VPN network whose role in a particular discussion is to receive unlabeled packets over customer links and then forward the packets as labeled packets into the MPLS network.






26. On a serial cable - the pin lead set by the DTE to imply that the DTE is ready to signal using pin leads.






27. A multicast routing protocol that forwards the multicast traffic only when requested by a downstream router.






28. The most recent standardized set of generic SNMP MIB variables - defined in RFC 1213 and updated in RFCs 2011 through 2013.






29. Modular QoS CLI.






30. A term referring to the MQC class-map command and its related subcommands - which are used for classifying packets.






31. Designated router.






32. 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.






33. Customer edge.






34. In TCP - a TCP host sets the TCP header's Window field to the number of bytes it allows the other host to send before requiring an acknowledgement. In effect - the receiving host - by stating a particular window size - grants the sending host the rig

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35. A process used in routers that are encrypting traffic to permit egress QoS actions to be taken on traffic that is being encrypted on that router. QoS pre-classification keeps a copy of each packet to be encrypted in memory long enough to take the app






36. Cisco IOS router feature by which a route map determines how to forward a packet - typically based on information in the packet other than the destination IP address.






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






38. A standard (RFC 903) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address. See also ARP.






39. An EIGRP message that is used by a router to notify its neighbors when the router is gracefully shutting down.






40. A bit in the ATM cell header that - when set to 1 - means that if a device needs to discard frames - it should discard the frames with DE 1 first.






41. A tunneling protocol that can be used to encapsulate many different protocol types - including IPv4 - IPv6 - IPsec - and others - to transport them across a network.






42. A queuing tool's logic by which it selects the next packet to dequeue from its many queues.






43. A field in the IP header that is decremented at each pass through a Layer 3 forwarding device.






44. 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.






45. Digital Signal Level 3.






46. Inside telcos' original TDM hierarchy - a unit that combines multiple DS0s into a single channel






47. Enables a wireless client to securely roam between access points in the same subnet or between subnets with access point handoff times within 50 ms.






48. An Internet standard serial data-link protocol - used on synchronous and asynchronous links - that provides data-link framing - link negotiation - Layer 3 interface features - and other functions.






49. 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.






50. 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.