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






2. With EIGRP - the metric value for the lowest-metric route to a particular subnet.






3. A communication protocol between hosts and a multicast router by which routers learn of which multicast groups' packets need to be forwarded onto a LAN.






4. Reliable Transport Protocol.






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






6. Another term for summary route.






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






8. Copper cable with RJ-45 connectors in which a twisted pair at pins 1 -2 on the first end of the cable is connected to pins 3 -6 on the other end - with a second pair connected to pins 3 -6 on the first end and pins 1 -2 on the other end.






9. A term used with WFQ for the number assigned to a packet as it is enqueued into a WFQ. WFQ schedules the currently lowest SN packet next.






10. Data Set Ready.






11. A Cisco 12000 series router feature that combines the key features of LLQ and CQ to provide similar congestion-management features.






12. A Cisco IOS feature that performs deep packet inspection to classify packets based on application layer information.






13. Designed to solve the problems of multicast duplication and multicast routing loops. For every multicast packet received - a multicast router examines its source IP address - consults its unicast routing table - determines which interface it would us






14. Also known as triggered updates.






15. Address Resolution Protocol. Defined in RFC 826 - a protocol used on LANs so that an IP host can discover the MAC address of another device that is using a particular IP address.






16. The process of taking the payload inside a Layer 2 frame - including the headers of Layer 3 and above - compressing the data - and then uncompressing the data on the receiving router.






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






18. As defined in RFC 3623 - graceful restart allows for uninterrupted forwarding in the event that an OSPF router's OSPF routing process must restart. The router does this by first notifying the neighbor routers that the restart is about to occur; the n






19. The ASN assigned to a confederation sub-AS.






20. Similar to an appliance firewall - in that interfaces are placed into security zones. Traffic is allowed between interfaces in the same zone. You can apply policies to filter and control traffic between zones.






21. WRED compares this setting to the average queue depth to decide whether packets should be discarded. No packets are discarded if the average queue depth falls below this minimum threshold.






22. Switched virtual circuit.






23. Timer An STP timer that dictates how long a port should stay in the listening state and the learning state.






24. VTP process that prevents the flow of broadcasts and unknown unicast Ethernet frames in a VLAN from being sent to switches that have no ports in that VLAN.






25. A BGP path attribute that implies how the route was originally injected into some router's BGP table.






26. Weighted tail drop.






27. Another name for 802.1Q-in-Q. See 802.1Q-in-Q.






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






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






30. Dynamic Multipoint VPN.






31. Operation - Administration - and Maintenance.






32. A protocol used for reliable multicast and unicast transmissions. Used by EIGRP.






33. On a serial cable - the pin lead set by the DCE to imply a working link.






34. A message sent by a host when it wants to leave a group - addressed to the All Multicast Routers address 224.0.0.2.






35. An attack by which the attacker initiates many TCP connections to a server - but does not complete the TCP connections - by simply not sending the third segment normally used to establish the connection. The server may consume resources and reject ne






36. An administrative setting - included in Hellos - that is the first criteria for electing a DR. The highest priority wins - with values from 1-255 - with priority 0 meaning a router cannot become DR or BDR.






37. In BGP - a configuration construct in which multiple neighbors' parameters can be configured as a group - thereby reducing the length of the configuration. Additionally - BGP performs routing policy logic against only one set of Updates for the entir






38. IP multicast address range from 224.0.0.0 through 239.255.255.255.






39. 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.






40. A switch feature with which the switch watches ARP messages - determines if those messages may or may not be part of some attack - and filters those that look suspicious.






41. In MPLS - the mapping of an IP prefix and a label - which is then advertised to neighbors using LDP.






42. Network Layer Protocol ID is a field in the RFC 2427 header that is used as a Protocol Type field in order to identify the type of Layer 3 packet encapsulated inside a Frame Relay frame.






43. Structure of Management Information.






44. An SPF calculation for which a router does not need to run SPF for any LSAs inside its area - but instead runs a very simple algorithm for changes to LSAs outside its own area.






45. An MPLS VPN term referring to any LSR that connects to customers to support the forwarding of unlabeled packets - as well as connecting to the MPLS network to support labeled packets - thereby making the LSR be on the edge between the provider and th






46. Priority queue and priority queuing.






47. 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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48. The original MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. It is slightly different from LDP - but functionally equivalent. See also LDP.






49. An MPLS term referring to any device that can forward packets that have MPLS labels.






50. Inside telcos' original TDM hierarchy - a unit that combines multiple DS1s into a single channel