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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. 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.






2. Rendezvous point.






3. Alternate Mark Inversion. 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.






4. The operating mode of shaped round-robin that provides behavior like CBWFQ with bandwidth allocated between different traffic classes by a relative amount rather than absolute percentage of the available bandwidth.






5. A term used with Cisco LAN switches - referring to a queue treated with strict-priority scheduling.






6. The 802.1X function implemented by a switch - in which the switch translates between EAPoL and RADIUS messages in both directions - and enables/disables ports based on the success/failure of authentication.






7. Multiple Spanning Trees.






8. 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.






9. Carrier sense multiple access with collision detection. A media-access mechanism where devices ready to transmit data first check the channel for a carrier. If no carrier is sensed for a specific period of time - a device can transmit. If two devices






10. An STP timer that dictates the interval at which the Root switch generates and sends Hello BPDUs.






11. Weighted fair queuing.






12. The innermost MPLS header in an packet traversing an MPLS VPN - with the label value identifying the forwarding details for the egress PE's VRF associated with that VPN.






13. Point-to-Point Protocol.






14. With EIGRP - a route that is not a successor route - but that meets the feasibility condition; can be used when the successor route fails - without causing loops.






15. A characteristic of OSPF interfaces that determines whether a DR election is attempted - whether or not neighbors must be statically configured - and the default Hello and Dead timer settings.






16. A Cisco IOS queuing tool that uses MQC configuration commands - reserves a minimum bandwidth for some queues - provides high-priority scheduling for some queues - and polices those queues to prevent starvation of lower-priority queues during interfac






17. The process of combining multiple synchronized input signals over a single medium by giving each signal its own time slot - and then breaking out those signals.






18. A Cisco-proprietary protocol that defines how to perform authentication between an authenticator (for example - a router) and an authentication server that holds a list of usernames and passwords.






19. 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






20. An enhanced version of WEP that is part of the 802.11i standard and has an automatic key-update mechanism that makes it much more secure than WEP. TKIP is not as strong as AES in terms of data protection.






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






22. A wireless LAN that includes the use of access points. Infrastructure mode connects wireless users to a wired network and allows wireless users to roam throughout a facility between different access points. All 802.11 data frames in an infrastructure






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






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






25. Permanent virtual circuit.






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






27. A router that should not be used to forward packets between other routers. Other routers will not send Query messages to a stub router.






28. Time to Live.






29. When multiple routers are connected to a subnet - only one should be sending IGMP queries. It is called a querier. IGMPv1 does not have any rules for electing a querier. In IGMPv2 and IGMPv3 - a router with the lowest interface IP address on the subn






30. Class-Based Marking.






31. The Cisco IOS Router IP Traffic Export feature - intended for intrusion detection - exports IP traffic that has signs of an attack - such as duplicate IP packets simultaneously received on two or more of a router's interfaces.






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






33. WRED is a method of congestion avoidance that works by dropping packets before the output queue becomes completely full. WRED can base its dropping behavior on IP Precedence or DSCP values to drop low-priority packets before high-priority packets.






34. A component of the IOS IP SLA feature. An IP SLA responder is a router configured to respond to a particular IP SLA message initiated by another router - allowing the routers to work together to provide performance information including UDP jitter an






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






36. A single instance of STP that is applied to multiple VLANs - typically when using the 802.1Q trunking standard.






37. An STP timer that dictates how long a switch should wait when it ceases to hear Hellos.






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






39. Link-State Refresh. A timer that determines how often the originating router should reflood an LSA - even if no changes have occurred to the LSA.






40. Multicast Open Shortest Path First.






41. A switch feature that examines incoming frames - comparing the source IP and MAC addresses to the DHCP snooping binding database - filtering frames whose addresses are not listed in the database for the incoming interface.






42. CDP Control Protocol.






43. A term referring to EIGRP's internal processing logic.






44. The process of changing the electrical characteristics on a transmission medium - based on defined rules - to represent data.






45. Dynamic ARP Inspection.






46. A router that is allowed to receive a packet from an OSPF router and then forward the packet to another OSPF router.






47. Data communications equipment.






48. The multicast addresses assigned by IANA.






49. A Cisco IOS queuing tool most notable for its scheduler - which always services the high-priority queue over all other queues.






50. 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.