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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. A router feature used when a router sees an ARP request searching for an IP host's MAC - when the router believes the IP host could not be on that LAN because the host is in another subnet. If the router has a route to reach the subnet where the ARP-






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






3. Often used synonymously with neighbor - but with emphasis on the fact that all required parameters match - allowing routing updates to be exchanged between the routers.






4. Designated router.






5. On a serial cable - the pin lead set by the DCE to tell the DTE that the DTE is allowed send data.






6. A Cisco-proprietary messaging protocol implemented in WAN switches that can be used to signal network status - including congestion - independent of end-user frames and cells.






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






8. A calculation of the length of the AS_PATH PA - which includes 1 for each number in the AS_SEQ - 1 for an entire AS_SET segment - and possibly other considerations.






9. An optimized Layer 3 forwarding path through a router. Fast switching optimizes routing table lookup by creating a special - easily searched table of known flows between hosts.






10. Jargon used to refer to the second of two buckets in the dual token bucket model; its size is Be.






11. A 3-bit field in an 802.1Q header used for marking frames.






12. 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.






13. In the context of SNMP - the Trap command is sent by an SNMP agent - to a manager - when the agent wants to send unsolicited information to the manager. Trap is not followed by a Response message from the receiving SNMP manager.






14. Version 6 of the IP protocol - which uses 128-bit IP addresses.






15. 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.






16. Tag Distribution Protocol.






17. An OSPF timer that determines how long an LSA can remain in the LSDB without having heard a reflooded copy of the LSA.






18. Inside telcos' original TDM hierarchy - a unit that combines multiple DS0s into a single channel






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






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






21. Low-latency queuing.






22. A term used in this book to refer to a route that is included in a larger summary route.






23. Secure Copy Protocol - one of the many ways of transferring files to and from Cisco IOS routers and switches.






24. The second most significant bit in the most significant byte of an Ethernet MAC address - a value of binary 0 implies that the address is a Universally Administered Address (UAA) (also known as Burned-In Address [BIA]) - and a value of binary 1 impli






25. A feature of Ethernet NICs. When the NIC transmits an electrical signal - it "loops" the transmitted electrical current back onto the receive pair. By doing so - if another NIC transmits a frame at the same time - the NIC can detect the overlapping r






26. 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.






27. With routing protocols - the process by which the router receiving a routing update determines if the routing update came from a trusted router.






28. Policing in which two rates are metered - and packets are placed into one of three categories (conform - exceed - or violate).






29. 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.






30. 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.






31. 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






32. Gateway Load Balancing Protocol.






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






34. An Internet standard serial data-link protocol - used on synchronous and asynchronous links - that provides data-link framing - link negotiation - Layer 3 interface features - and other functions.






35. A mechanism for conserving battery power in wireless stations. The access point buffers data frames destined to sleeping stations - which wake periodically to learn from information in the beacon frame whether or not data frames are waiting for trans






36. An MPLS LSR that can forward and receive both labeled and unlabeled packets.






37. The range 239.0.0.0 through 239.255.255.255 that IANA has assigned for use in private multicast domains.






38. An EIGRP router's reaction to an input event - leading to the use of a feasible successor or going active on a route.






39. Link Fragmentation and Interleaving.






40. Inside telcos' original TDM hierarchy - the smallest unit of transmission at 64 kbps.






41. A Cisco switch feature that permits limiting traffic arriving at switch ports by percentage or absolute bandwidth. Separate thresholds are available per port for unicast - multicast - and broadcast traffic.






42. The process of running the SPF algorithm against the LSDB - with the result being the determination of the current best route(s) to each subnet.






43. As defined in RFCs 2765 and 2766 - a method of translating between IPv4 and IPv6 that removes the need for hosts to run dual protocol stacks. NAT-PT is an alternative to tunneling IPv6 over an IPv4 network - or vice versa.






44. An NTP client that assumes that a server will send NTP broadcasts - removing the requirement for the client to have the NTP server's IP address preconfigured.






45. Route Target.






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






47. 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.






48. A process used in routers that are encrypting traffic to permit egress QoS actions to be taken on traffic that is being encrypted on that router. QoS pre-classification keeps a copy of each packet to be encrypted in memory long enough to take the app






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






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