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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. An optional contention-free 802.11 access protocol that requires the access point to poll wireless stations before they are able to send frames. Not commonly implemented.






2. With OSPF - the encapsulation of OSPF messages inside IP - to a router with which no common subnet is shared - for the purpose of either mending partitioned areas or providing a connection from some remote area to the backbone area.






3. The definitions for a particular set of data variables - with those definitions following the SMI specifications. See also SMI.






4. A category used by a policer to classify packets relative to the traffic contract. With two-color policers - these packets are considered to be above the contract; for three-color - these packets are above the Bc setting - but within the Be setting.






5. 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.






6. Provider router.






7. 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.






8. Superframe






9. A Cisco IOS queuing tool that uses MQC configuration commands and reserves a minimum bandwidth for each queue.






10. An NTP mode in which two or more NTP servers mutually synchronize their clocks.






11. Enhances RP redundancy by providing a method for RPs to exchange multicast source information - even between multicast domains.






12. A contiguous group of data links that share the same OSPF area number.






13. 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.






14. Jargon referring to a policer action through which - instead of discarding an out-of-contract packet - the policer marks a different IPP or DSCP value - allowing the packet to continue on its way - but making the packet more likely to be discarded la






15. AS number. A number between 1 and 64 -511 (public) and 64 -512 and 65 -535 (private) assigned to an AS for the purpose of identifying a specific BGP domain.






16. In the PIM-SM design - the process by which a source DR - after it starts to receive the group traffic - encapsulates the multicast packets in the unicast packets and sends them to the RP.






17. Database Description.






18. Multiple Spanning Trees.






19. Layer 2 payload compression.






20. Class of Service.






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






22. Discard Eligible.






23. The characterization of how far EIGRP Query messages flow away from the router that first notices a failed route and goes active for a particular subnet.






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






25. A routing protocol feature by which the routing update includes only routes that have changed - rather than include the entire set of routes.






26. Multicast Listener Discovery.






27. Layer x PDU.






28. A 16-bit number set with a router config-register command. It is used to set several low-level features related mainly to accessing the router and what the router does when powered on.






29. Digital Signal Level 1.






30. A single instance of STP that is applied to multiple VLANs - typically when using the 802.1Q trunking standard.






31. A logical group of content engines running WCCP between them. The lead content engine determines the traffic distribution within the cluster - for optimum performance and scalability.






32. A method of collecting traffic received on a switch port or a VLAN and sending it to specific destination ports on the same switch.






33. Protocol Independent Multicast dense-mode routing protocol.






34. Enhanced Local Management Interface.






35. Variable name for the time interval used by shapers and by CAR.






36. Copper cable with RJ-45 connectors in which the wire at pin 1 on one end is connected to pin 1 on the other end; the wire at pin 2 is connected to pin 2 on the other end; and so on.






37. Point-to-Point Protocol over Ethernet. A convention often used as the data link protocol over Cable in which Ethernet is used as the data link protocol - but with PPP being encapsulated inside Ethernet. The combination gives the data link features of






38. A method of collecting traffic received on a switch port or a VLAN and sending it to specific destination ports on a switch other than the one on which it was received.






39. Extensible Authentication Protocol.






40. 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.






41. The range 233.0.0.0 through 233.255.255.255 that IANA has reserved (RFC 2770) on an experimental basis. It can be used by anyone who owns a registered autonomous system number to create 256 global multicast addresses.






42. Multilayer Switching.






43. An IPv6 address format used for publicly registered IPv6 addresses.






44. A message sent by a multicast router - by default every 125 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






45. A BGP feature that defines the IP TTL field value in packets sent between two eBGP peers. This feature is required when using IP addresses other than the interface IP address on the link between peers.






46. Receivers subscribe to an (S -G) channel when they request to join a multicast group. That is - they specify the unicast IP address of their multicast source and the group multicast address. SSM is typically used in very large multicast deployments s






47. Neighbor Discovery Protocol.






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






49. 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.






50. In IPv6 - a Router Advertisement message used by an IPv6 router to send information about itself to nodes and other routers connected to that router.