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. The process of taking the IP and TCP headers of a packet - compressing them - and then uncompressing them on the receiving router.






2. In IPv6 - the Neighbor Discovery message used by an IPv6 node to send information about itself to its neighbors.






3. Protects against problems caused by unidirectional links between two switches. Watches for loss of received Hello BPDUs - in which case it transitions to a loop-inconsistent state instead of transitioning to a forwarding state.






4. Password Authentication Protocol.






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. Low-latency queuing.






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






8. Edge LSR.






9. Mark probability denominator.






10. A method of Link Fragmentation and Interleaving (LFI) over interfaces that natively use Frame Relay encapsulation. The routers first build MLP-style PPP headers - which are then encapsulated inside a Frame Relay header. The PPP headers are then used






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






12. Direct sequence spread spectrum.






13. Cisco Group Management Protocol.






14. 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






15. Cisco IOS Embedded Event Manager - a feature that monitors events on a router and reports their results. Principally intended to increase availability - EEM provides flexible - granular detection and alerting functions.






16. In BGP - a set of routers inside a single administrative authority - grouped together for the purpose of controlling routing policies for the routes advertised by that group to the Internet.






17. Class-Based Marking.






18. 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.






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






20. An NTP mode in which an NTP host does not adjust its clock - but in which it sends NTP messages to clients so that the clients can update their clocks based on the server's clock.






21. Inverse ARP.






22. Defined in RFCs 1517-1520 - a scheme to help reduce Internet routing table sizes by administratively allocating large blocks of consecutive classful IP network numbers to ISPs for use in different global geographies. CIDR results in large blocks of n






23. 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.






24. PIM-SM is a method of routing multicast packets that requires some intelligence in the network about the locations of receivers so that multicast traffic is not flooded into areas with no receivers. PIM Sparse Mode gets its name from the assumption t






25. Sent by a PIM router to its upstream router to either request that the upstream router forward the group traffic or stop forwarding the group traffic that is currently being forwarded. If a PIM router wants to start receiving the group traffic - it l






26. In BGP - a feature in which BGP routes cannot be considered to be a best route to reach an NLRI unless that same prefix exists in the router's IP routing table as learned via some IGP.






27. A type of OSPF stub area that - unlike stub areas - can inject external routes into the NSSA area.






28. Per-Hop Behavior.






29. An optional contention-free 802.11 access protocol that requires the access point to poll wireless stations before they are able to send frames. Not commonly implemented.






30. In OSPF - a router that is prepared to take over the designated router.






31. Used to reserve network resources for a flow as it traverses the network. A device that creates an RSVP reservation guarantees that it can provide the bandwidth - latency - or other resources that are requested by RSVP.






32. 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.






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






34. 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.






35. 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






36. Removing unwanted VLANs from a Layer 2 path.






37. An ITU standard Frame Relay header - including the DLCI - DE - FECN - and BECN bits in the LAPF header - and a frame check in the LAPF trailer.






38. Provider router.






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






40. Network Address Translation.






41. The portions of PPP focused on features that are related to specific Layer 3 protocols.






42. An interface on a Cisco IOS-based switch that is treated as if it were an interface on a router.






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






44. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised to any other peer.






45. Variable-length subnet masking.






46. Dynamic Multipoint VPN.






47. A bit in the Frame Relay header that - when set to 1 - means that if a device needs to discard frames - it should discard the frames with DE 1 first.






48. A protection against problems caused by unidirectional links between two switches. Uses messaging between switches to detect the loop - err-disabling the port when the link is unidirectional.






49. A queuing scheduler's logic by which - if a particular queue has packets in it - those packets always get serviced next.






50. The portion of PPP focused on features that are unrelated to any specific Layer 3 protocol.