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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. Multilayer Switching.






2. A method of applying a mathematical formula - with input including a private key - the message contents - and sometimes a shared text string - with the resulting digest being included with the message. The sender and the receiver perform the same mat






3. Another name for Superframe.






4. 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.






5. EAP over LAN.






6. Maximum Response Time.






7. A router that should either permanently or temporarily not be used as a transit router. Can wait a certain time after OSPF process start - or after BGP notifies OSPF that BGP has converged - before ceasing to be a stub router.






8. Virtual LAN.






9. A neighbor state that signifies the other router has reached neighbor status - having passed the parameter check. The FIB entry details the information needed for forwarding: the next-hop router and the outgoing interface - in an optimized mtrie stru






10. 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.






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






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






13. A Cisco IOS configuration tool that can be used to match routing updates based on a base network address - a prefix - and a range of possible masks used inside the values defined by the base network address and prefix.






14. Data-link connection identifier.






15. Enhanced Local Management Interface.






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






17. A Cisco 12000 series router feature that combines the key features of LLQ and CQ to provide similar congestion-management features.






18. A Cisco-proprietary STP implementation - created many years before IEEE 802.1s and 802.1w - that speeds convergence and allows for one STP instance for each VLAN.






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






20. Ethernet MAC address that represents a single NIC or interface.






21. 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.






22. 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.






23. 16 bits between the interface ID and global routing prefix in an IPv6 global address - used for subnet assignment inside an enterprise.






24. With RIP - a per-route timer - which is reset and grows with the Invalid timer. When the Flush timer mark is reached (default 240 seconds) - the router removes the route from the routing table - and now accepts any other routes about the failed subne






25. The portion of PPP focused on negotiating IP features






26. Neighbor Advertisement.






27. Ethernet process by which devices attached to the same cable negotiate their speed and the duplex settings over the cable.






28. The password required by the enable command. Also - this term may specifically refer to the password defined by the enable password command.






29. A wireless LAN that only includes wireless users and no access points. 802.11 data frames in an ad hoc network travel directly between wireless users.






30. A 3-bit field in an MPLS header used for marking frames.






31. Exterior Gateway Protocol.






32. Common Spanning Tree.






33. The process of taking routes known through one routing protocol and advertising those routes with another routing protocol.






34. A DiffServ PHB - based on DSCP EF (decimal 46) - that provides low-latency queuing behavior as well as policing protection to prevent EF traffic from starving queues for other types of traffic.






35. In the PIM-SM design - the central distribution point to which the multicast traffic is first delivered from the source designated router.






36. An IPv6/IPv4 tunneling method that allows isolated IPv6 domains to be connected over an IPv4 network.






37. Designed to solve the problems of multicast duplication and multicast routing loops. For every multicast packet received - a multicast router examines its source IP address - consults its unicast routing table - determines which interface it would us






38. Used by a policer to classify packets relative to the traffic contract. These packets are considered to be above the traffic contract in all cases.






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






40. In MPLS - a term used to define a label that an LSR allocates and then advertises to neighboring routers. The label is considered "local" on the router that allocates and advertises the label.






41. A serial-line encoding standard that substitutes Bipolar Violations in a string of eight binary 0s to provide enough signal transitions to maintain synchronization.






42. 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.






43. Virtual Router Redundancy Protocol.






44. 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.






45. On a serial cable - the pin lead set by the DCE to imply that the DCE is ready to signal using pin leads






46. 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






47. A category used by a policer to classify packets relative to the traffic contract. With two-color policers - these packets are considered to be above the contract; for three-color - these packets are above the Bc setting - but within the Be setting.






48. 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.






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






50. Cell Loss Priority.