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CCIE Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 SPF calculation as a result of changes inside the same area as a router - for which the SPF run must examine the full LSDB.






2. A message sent by a router - after receiving a Leave message from a host - to determine whether there are still any active members of the group. The router uses the group address as the destination address.






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






4. Network Address Translation-Protocol Translation.






5. 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.






6. A name used for DS1 lines inside the North American TDM hierarchy.






7. Used by WRED to calculate the rate at which the average queue depth changes as compared with the current queue depth. The larger the number - the slower the change in the average queue depth.






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






9. A type of IPv4 and IPv6 traffic designed primarily to provide one-to-many connectivity but unlike broadcast - has the capability to control the scope of traffic distribution.






10. Peak information rate.






11. Tag Distribution Protocol.






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






13. An MPLS term describing designs in which one or more MPLS customer sites can be reached from multiple other VPNs.






14. 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.






15. An IPv6 address format used for publicly registered IPv6 addresses.






16. A switch feature with which the switch watches ARP messages - determines if those messages may or may not be part of some attack - and filters those that look suspicious.






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






18. With PIM on a multiaccess network - the PIM router with the highest IP address on the subnet. It is also the IGMPv1 Querier. The DR is responsible for the following tasks: - Sending PIM register and PIM join and prune messages toward the RP to infor






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






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






21. Type of Service byte.






22. Authentication - authorization - and accounting.






23. The underlying algorithms associated with RIP.






24. A component that interfaces with a phone using IP and provides connections to the Public Switched Telephone Network (PSTN).






25. The speed at which the access link is clocked. This choice affects the price of the connection and many aspects of traffic shaping and policing - compression - quality of service - and other configuration options.






26. Alarm Indication Signal. With T1s - the practice of sending all binary 1s on the line in reaction to problems - to provide signal transitions and allow recovery of synchronization and framing.






27. Per-Hop Behavior.






28. 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.






29. The mandatory contention-based 802.11 access protocol that is also referred to as CSMA/CA.






30. Time Interval.






31. 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.






32. A type of logic for how a router uses a default route. When a default route exists - and the class A - B - or C network for the destination IP address does not exist in the routing table - the default route is used. If any part of that classful netwo






33. A Cisco IOS queuing tool most notable for its automatic classification of packets into separate per-flow queues.






34. An Internet standard authentication protocol that uses secure hashes and a three-way handshake to perform authentication over a PPP link.






35. Cisco-proprietary STP feature in which an access layer switch is configured to be unlikely to become Root or to become a transit switch. Also - convergence upon the loss of the switch's Root Port takes place in a few seconds.






36. Advanced Encryption Standard A superior encryption mechanism that is part of the 802.11i standard and has much stronger security than TKIP.






37. Defined in RFC 2289 - a mechanism by which a shared key and a secret key together feed into a hash algorithm - creating a password that is transmitted over a network. Because the shared key is not reused - the hash value is only valid for that indivi






38. A BGP peer connection between two routers inside the same ASN - but in different confederation sub-autonomous systems.






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






40. In wireless LANs - a mechanism that counters issues related to RF interference by dividing a larger 802.11 data frame into smaller frames that are sent independently to the destination. See also LFI.






41. A type of OSPF NSSA area for which neither external (type 5) LSAs are introduced - nor type 3 summary LSAs; instead - the ABRs originate and inject default routes into the area. External routes can be injected into a totally NSSA area.






42. 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.






43. 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. The destination address on the Report is 224.0.0.22 - and a host can specify the source a






44. Each 802.11 station passively monitors each RF channel for a specific amount of time and listens for beacons. Stations use the signal strengths of found beacons to determine the access point or ad hoc network with which to attempt association.






45. An alternative software loaded into a Cisco router - used for basic IP connectivity; most useful when Flash memory is broken and you need IP connectivity to copy a new IOS image into Flash memory.






46. A term referring to how a router views a BGP peer relationship - in which the peer is in another AS.






47. An event in which a new packet arrives - needing to be placed into a queue - and the queue is full






48. Custom queuing






49. With EIGRP - a timer started when a reliable (to be acknowledged) message is transmitted. For any neighbor(s) failing to respond in its RTO - the RTP protocol causes retransmission. RTO is calculated based on SRTT.






50. The SNMP specifications - standardized in RFCs - defining the rules by which SNMP MIB variables should be defined.







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