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






2. An OSPF router that connects to the backbone area and to one or more non-backbone area.






3. Single-bit fields in the TCP header. For example - the TCP SYN and ACK code bits are used during connection establishment.






4. A Frame Relay address used in Frame Relay headers to identify the VC






5. Cisco Group Management Protocol.






6. Port Aggregation Protocol.






7. A prestandard (at the time of publication) wireless LAN physical layer that offers data rates in the hundreds of megabits per second.






8. With private VLANs - a secondary VLAN in which the ports can send and receive frames with each other - but not with ports in other secondary VLANS.






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






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






11. Any occurrence that could change a router's EIGRP topology table - including a received Update or Query - a failed interface - or the loss of a neighbor.






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






13. 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






14. 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.






15. A Cisco-proprietary protocol - used by LAN switches to communicate VLAN configuration.






16. When a wireless station connects to an access point - the access point assigns an association ID (AID) to the station. Various protocols - such as power-save mode - make use of the association ID.






17. The protocol used in IPv6 for many functions - including address autoconfiguration - duplicate address detection - router - neighbor - and prefix discovery - neighbor address resolution - and parameter discovery.






18. A set of DiffServ PHBs that defines 12 DSCP values - with four queuing classes and three drop probabilities within each queuing class.






19. 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.






20. 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.






21. A characterization of a BGP path attribute in which BGP implementations are not required to support the attribute (optional) - and for which if a router receives a route with such an attribute - the router should forward the attribute unchanged (tran






22. A characterization of a BGP path attribute in which all BGP implementations must support and understand the attribute (well known) - and all BGP Updates must include the attribute (mandatory).






23. An MQC-based feature of IOS that is used to classify and mark packets for QoS purposes.






24. In OSPF - a number assigned to each LSA - ranging from 0x80000001 and wrapping back around to 0x7FFFFFFF - which is used to determine which LSA is most recent.






25. From one multicast router's perspective - the upstream router is another router that has just forwarded a multicast packet to that router.






26. 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.






27. 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.






28. The low-order 4 bits of the configuration register. These bits direct a router to load either ROMMON software (boot field 0x0) - RXBOOT software (boot field 0x1) - or a full-function IOS image.






29. An early standard from AT&T for encoding analog voice as a digital signal for transmission over a TDM network. PCM requires 64 kbps - and is the basis for the DS0 speed.






30. Protocol Independent Multicast dense-mode routing protocol.






31. An alternative software loaded into a Cisco router - used for low-level debugging and for password recovery.






32. Sequence number.






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






34. Data communications equipment.






35. Class-Based Marking.






36. The multicast IP address 224.0.0.5 - listened for by all OSPF routers.






37. Cisco Express Forwarding.






38. 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.






39. The first 4 bits of the first octet must be 1110. The last 28 bits are unstructured.






40. An attack similar to a smurf attack - but using packets for the UDP Echo application instead of ICMP.






41. Port Address Translation.






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






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






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






45. The list of entries learned by the switch DHCP snooping feature. The entries include the MAC address used as the device's DHCP client address - the assigned IP address - the VLAN - and the switch port on which the DHCP assignment messages flowed.






46. An optional transitive BGP path attribute that - for a summary route - lists the BGP RID and ASN of the router that created the summary.






47. A BGP path attribute that allows routers in one AS to set a value and advertise it into a neighboring AS - impacting the decision process in that neighboring AS. A smaller value is considered better. Also called the BGP metric.






48. 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.






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






50. A well-known discretionary BGP path attribute that flags a route as being a summary route.