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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. An Internet standard (RFC 1305) that defines the messages and modes used for IP hosts to synchronize their time-of-day clocks.






2. Wired Equivalent Privacy.






3. A term generally describing characteristics about BGP paths that are advertised in BGP Updates.






4. A routing protocol feature by which the routing update includes only routes that have changed - rather than include the entire set of routes.






5. A standards-based way of helping routers find Rendezvous Points (RP). RPs notify BSRs of the groups they handle. BSRs in turn flood the group-to-RP mappings throughout the network. Each router individually determines which RP to use for a particular






6. From a Layer 1 perspective - the process of using special strings of electrical signals over a transmission medium to inform the receiver as to which bits are overhead bits - and which fit into individual subchannels.






7. Backup designated router.






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






9. The PPP function for fragmenting packets - plus interleaving delay-sensitive later-arriving packets between the fragments of the first packet.






10. The term referring to a group of iBGP routers in a confederation - with the group members being assigned a hidden ASN for the purposes of loop avoidance.






11. The structure inside telcos' original digital circuit build-out in the mid-1900s - based upon using TDM to combine and disperse smaller DS levels into larger levels - and vice versa.






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






13. In PIM-SM - the path of the group traffic that flows from the RP to the routers that need the traffic. It is also called the root-path tree (RPT) - because it is rooted at the RP.






14. The actual number of packets in a queue at a particular time.






15. When a PIM-SM router switches from RPT to SPT - it sends a PIM-SM Prune message for the source and the group with the RP bit set to its upstream router on the shared tree. RFC 2362 uses the notation PIM-SM (S - G) RP-bit Prune for this message.






16. A Cisco-proprietary Layer 2 protocol that enables a router to communicate to a switch which multicast group traffic the router does and does not want to receive from the switch.






17. The command used to initialize a SPAN or RSPAN session on a Catalyst switch.






18. A method used by an IPv6 host to determine its own IP address - without DHCPv6 - by using NDP and the modified EUI-64 address format. See also stateful autoconfiguration.






19. In two-rate policing - the second and higher rate defined to the policer.






20. 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






21. Priority queue and priority queuing.






22. Differentiated Services.






23. A set of QoS RFCs that redefines the IP header's ToS byte - and suggests specific settings of the DSCP field and the implied QoS actions based on those settings.






24. A message that each host sends - either in response to a router Query message or on its own - to all multicast groups for which it would like to receive multicast traffic.






25. An attack similar to a smurf attack - but using packets for the UDP Echo application instead of ICMP.






26. Sequence number.






27. The process of taking the IP - UDP - and RTP headers of a voice or video packet - compressing them - and then uncompressing them on the receiving router.






28. 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.






29. A method of collecting traffic received on a switch port or a VLAN and sending it to specific destination ports on the same switch.






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






31. A type of OSPF packet - used to communicate LSAs to another router.






32. A network/subnet over which two or more OSPF routers have become neighbors - thereby being able to forward packets from one router to another across that network.






33. Class-Based Marking.






34. A conceptual model used by CB Policing when using an excess burst.






35. In SNMP - the process of a manager using successive GetNext and GetBulk commands to discover the exact MIB structure supported by an SNMP agent. The process involves the manager asking for each successive MIB leaf variable.






36. A queue created by Cisco IOS as a result of the configuration of a queuing tool.






37. Defined in RFC 826 - a protocol used on LANs so that an IP host can discover the MAC address of another device that is using a particular IP address.






38. Each 802.11 station periodically sends a probe request frame on each RF channel and monitors probe response frames that all access points within range send back. Stations use the signal strength of the probe response frames to determine which access






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






40. Area 0; the area to which all other OSPF areas much connect in order for OSPF to work.






41. A routing protocol feature by which the routing update includes the entire set of routes - even if some or all of the routes are unchanged.






42. Ethernet feature in which a NIC or Ethernet port can both transmit and receive at the same instant in time. It can be used only when there is no possibility of collisions. Loopback circuitry on NIC cards is disabled to use full duplex.






43. 16 bits between the interface ID and global routing prefix in an IPv6 global address - used for subnet assignment inside an enterprise.






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






45. A term used in this book to refer to a route that is included in a larger summary route.






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






47. 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.






48. With routing protocols - the measurement of favorability that determines which entry will be installed in a routing table if more than one router is advertising that exact network and mask.






49. A Cisco-proprietary LMI protocol - implemented in Cisco WAN switches and routers - through which the switch can inform the router about parameters for each VC - including CIR - Bc - and Be.






50. An alternative software loaded into a Cisco router - used for low-level debugging and for password recovery.