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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. Aka receiver's advertised window.






2. The structure inside telcos' original digital circuit build-out in the mid-1900s - based upon using TDM to combine and disperse smaller DS levels into larger levels - and vice versa.






3. Area 0; the area to which all other OSPF areas much connect in order for OSPF to work.






4. Orthogonal frequency division multiplexing.






5. The common set of IOS configuration commands that is used with each QoS feature whose name begins with "Class-Based."






6. Access Control Server. A term referring generically to a server that performs many AAA functions. It also refers to the software product Cisco Secure Access Control Server.






7. 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






8. Exterior Gateway Protocol.






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






10. Burst With shaping and policing - the number of additional bits that may be sent after a period of relative inactivity.






11. A name used for DS1 lines inside the European TDM hierarchy.






12. A standard (RFC 3768) feature by which multiple routers can provide interface IP address redundancy so that hosts using the shared - virtual IP address as their default gateway can still reach the rest of a network even if one or more routers fail.






13. 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.






14. 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.






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






16. 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.






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






18. 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.






19. Layer 2 payload compression.






20. 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.






21. Used by RRs to denote the RID of the iBGP neighbor that injected the NLRI into the AS.






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






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






24. With DiffServ - a DSCP marking and a related set of QoS actions applied to packets that have that marking.






25. 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.






26. An optimized Layer 3 forwarding path through a router or switch. CEF optimizes routing table lookup by creating a special - easily searched tree structure based on the contents of the IP routing table. The forwarding information is called the Forward






27. 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.






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






29. A conceptual model used by CB Policing when using an excess burst.






30. In IPv6 DNS - the IPv6 equivalent of an IPv4 DNS A record.






31. A type of AS_PATH segment consisting of an ordered list of ASNs through which the route has been advertised.






32. In BGP - either external BGP (eBGP) - confederation eBGP - or internal BGP (iBGP). The term refers to a peer connection - and whether the peers are in different ASs (eBGP) - different confederation sub-ASs (confederation eBGP) - or in the same AS (iB






33. The process of breaking a frame into pieces - sending some of the fragments - and then sending all or part of a different packet - all of which is done to reduce the delay of the second packet.






34. 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.






35. A term used with Cisco LAN switches - referring to a DSCP value used when making QoS decisions about a frame. This value may not be the actual DSCP value in the IP header encapsulated inside the frame.






36. A Cisco-proprietary feature by which multiple routers can provide interface IP address redundancy so that hosts using the shared - virtual IP address as their default gateway can still reach the rest of a network even if one or more routers fail.






37. Feasible distance.






38. Operation - Administration - and Maintenance.






39. 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.






40. 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.






41. A 64-bit extension to the BGP NLRI field - used by MPLS for the purpose of making MPLS VPN customer routes unique in spite of the possibility of overlapping IPv4 address spaces in different customer networks.






42. 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.






43. A message sent by each host - either in response to a router query or on its own - to all multicast groups for which it would like to receive multicast traffic. The destination address on the Report is 224.0.0.22 - and a host can specify the source a






44. Flush timer.






45. An 802.1w RSTP port state in which the port is not the Root Port but is available to become the root port if the current root port goes down.






46. A process whereby a switch - when making a forwarding decision - uses not only Layer 2 logic but other OSI layer equivalents as well.






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






48. Removing unwanted VLANs from a Layer 2 path.






49. Data communications equipment.






50. 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.