Test your basic knowledge |

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 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






2. The specific frequency subband on which the radio card or access point is operating. The RF channel is set in the access point or ad hoc stations.






3. Network Address Translation-Protocol Translation.






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






5. 16 bits between the interface ID and global routing prefix in an IPv6 global address - used for subnet assignment inside an enterprise.






6. 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.






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






8. Spanning Tree Protocol.






9. With OSPF - the OSPF router that wins an election amongst all current neighbors. The DR is responsible for flooding on the subnet - and for creating and flooding the type 2 LSA for the subnet.






10. A queuing tool's logic by which it selects the next packet to dequeue from its many queues.






11. A wireless LAN physical layer that is backward compatible with 802.11b and operates at up to 54-Mbps data rates using OFDM in the 2.4-GHz band.






12. 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.






13. A Cisco router feature in which the router works to prevent SYN attacks either by monitoring TCP connections flowing through the router - or by actively terminating TCP connection until the TCP connection is established and then knitting the client-s






14. Rendezvous point.






15. Modular QoS CLI.






16. The initial 802.11 common key encryption mechanism; vulnerable to hackers.






17. 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.






18. An FRTS configuration construct - configured with the map-class frame-relay global configuration command.






19. An EIGRP message that is used to ask neighboring routers to verify their route to a particular subnet. Query messages require an Ack.






20. 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






21. Enhanced Local Management Interface.






22. An EIGRP message that is used by neighbors to reply to a query. Reply messages require an Ack.






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






24. The RFC-standard MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. See also TDP.






25. An IPv6/IPv4 tunneling method that is designed for transporting IPv6 packets within a site where a native IPv6 infrastructures is not available.






26. Receivers subscribe to an (S -G) channel when they request to join a multicast group. That is - they specify the unicast IP address of their multicast source and the group multicast address. SSM is typically used in very large multicast deployments s






27. On a single computer - one layer provides a service to a higher layer. The software or hardware that implements the higher layer requests that the next lower layer perform the needed function.






28. A problem that occurs when an AS does not run BGP on all routers - with synchronization disabled. The routers running BGP may believe they have working routes to reach a prefix - and forward packets to internal routers that do not run BGP and do not






29. 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.






30. A BGP router in an AS that uses route reflectors - but that is not aided by any RR server.






31. Committed Burst.






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






33. The Frame Relay protocol used between a DCE and DTE to manage the connection. Signaling messages for SVCs - PVC Status messages - and keepalives are all LMI messages.






34. In switch port security - the process whereby the switch dynamically learns the MAC address(es) of the device(s) connected to a switch port - and then adds those addresses to the running configuration as allowed MAC addresses for port security.






35. 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.






36. A BGP term referring to an IP prefix and prefix length.






37. Policing in which a single rate is metered - and packets are placed into one of two categories (conform or exceed).






38. Neighbor Discovery Protocol.






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






40. Jargon used by STP mostly when discussing the root election process; refers to a Hello with a lower bridge ID. Sometimes refers to a Hello with the same bridge ID as another - but with better values for the tiebreakers in the election process.






41. Maximum transmission unit.






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






43. Type of Service byte.






44. The first 6 bits of the DS field - used for QoS marking.






45. An OSPF external route for which internal OSPF cost is added to the cost of the route as it was redistributed into OSPF.






46. Jargon referring to a policer action through which - instead of discarding an out-of-contract packet - the policer marks a different IPP or DSCP value - allowing the packet to continue on its way - but making the packet more likely to be discarded la






47. Multiple Spanning Trees.






48. 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






49. Variable-length subnet masking.






50. A small FIFO queue associated with each router's physical interface - for the purpose of making packets available to the interface hardware - removing the need for a CPU interrupt to start sending the next packet out the interface.