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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 FRF standard for Frame Relay-to-ATM Service Interworking in which one DTE uses Frame Relay and one uses ATM.






2. The information maintained by a router for each multicast entry in its multicast routing table - such as incoming interface - outgoing interface list - Uptime timer - Expire timer - etc.






3. A serial-line encoding standard like B8ZS - but with each set of four consecutive 0s being changed to include a Bipolar Violation to maintain synchronization.






4. Cisco-proprietary VLAN trunking protocol.






5. Edge LSR.






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






7. A TCP variable used as the basis for a TCP sender's timer defining how long it should wait for a missing acknowledgement before resending the data.






8. Secure Shell protocol used for character-oriented command-line access and configuration. A highly secure alternative to Telnet.






9. The MD5-encoded password defined by the enable secret command.






10. A table used by CEF that holds information about adjacent IP hosts to which packets can be forwarded.






11. An EIGRP message that identifies neighbors - exchanges parameters - and is sent periodically as a keepalive function. Hellos do not require an Ack.






12. On a multiaccess network - when a PIM-DM or PIM-SM router receives a Prune message - it starts a 3-second timer. If it receives a Join message on the multiaccess network from another router before the timer expires - it considers the message as an ov






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






14. Protocol Independent Multicast dense-mode routing protocol.






15. A strategy for subnetting a classful network for which masks/prefixes are different for some subnets of that one classful network.






16. After a host receives an IGMP Query - the amount of time (default - 10 seconds) the host has to send the IGMP Report.






17. 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.






18. The RFC 1997 name for the reserved COMMUNITY path attribute known to Cisco IOS as LOCAL_AS. (See LOCAL_AS.)






19. 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.






20. Border Gateway Protocol.






21. A set of rules by which BGP examines the details of multiple BGP routes for the same NLRI and chooses the single best BGP route to install in the local BGP table.






22. Network Address Translation-Protocol Translation.






23. 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.






24. Challenge Handshake Authentication Protocol.






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






26. A designated router that is directly connected with a source of the multicast group.






27. Data-link connection identifier.






28. 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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29. Data Set Ready.






30. A 3-bit field in an ISL header used for marking frames. Also - used generically to refer to either the ISL CoS field or the 802.1Q User Priority field.






31. A 48-bit address that is calculated from a Layer 3 multicast address by using 0x0100.5E as the multicast vendor code (OUI) for the first 24 bits - always binary 0 for the 25th bit - and copying the last 23 bits of the Layer 3 multicast address.






32. 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.






33. 64 bits at the end of an IPv6 global address - used to uniquely identify each host in a subnet.






34. Label switched path.






35. A Cisco-proprietary feature. After a Cisco multicast router receives IGMP Join or Leave messages from hosts - it communicates to the connected Cisco switches - telling them which hosts (based on their unicast MAC addresses) have joined or left each m






36. The first 48 bits of an IPv6 global address - used for efficient route aggregation.






37. A TCP variable that defines the largest number of bytes allowed in a TCP segment's Data field. The calculation does not include the TCP header. With a typical IP MTU of 1500 bytes - the resulting default MSS would be 1460. TCP hosts must support an M






38. 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.






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






40. Source-specific multicast.






41. Operation - Administration - and Maintenance.






42. Autonomous System Boundary Router. An OSPF router that redistributes routes from some other source into OSPF.






43. Priority queue and priority queuing.






44. The combination of PVST+ and Rapid Spanning Tree. It provides subsecond convergence time and is compatible with PVST+ and MSTP.






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






46. Digital Signal Level 0.






47. In the PIM-SM design - the central distribution point to which the multicast traffic is first delivered from the source designated router.






48. 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.






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






50. 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.