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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. Request-to-send/clear-to-send.






2. Local Management Interface.






3. Smoothed Round-Trip Time.






4. A set of four hex digits listed in an IPv6 address. Each quartet is separated by a colon.






5. Label Switch Router.






6. Used by RRs to denote the RID of the iBGP neighbor that injected the NLRI into the AS.






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






8. When a Query is received from a router - each host randomly picks a time between 0 and the Maximum Response Time period to send a Report. When the host with the smallest time period first sends the Report - the rest of the hosts suppress their report






9. A standard (RFC 903) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address. See also ARP.






10. 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.






11. 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.






12. A standard (RFC 951) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address - along with other configuration settings - including a subnet mask and default gateway IP address.






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






14. A set of rules by which BGP examines the details of multiple BGP routes for the same NLRI and chooses the single best BGP route to install in the local BGP table.






15. A DiffServ PHB that defines eight values that provide backward compatibility with IP Precedence.






16. A routing protocol feature for which the routing protocol sends routing updates immediately upon hearing about a changed route - even though it may normally only send updates on a regular update interval.






17. A BGP message that includes withdrawn routes - path attributes - and NLRI.






18. The process by which neighboring OSPF routers examine their Hello messages and elect the DR. The decision is based on priority (highest) - or RID (highest) if priority is a tie.






19. An MPLS VPN term referring to any LSR that connects to customers to support the forwarding of unlabeled packets - as well as connecting to the MPLS network to support labeled packets - thereby making the LSR be on the edge between the provider and th






20. The OSPF data structure that describes topology information.






21. An STP timer that dictates the interval at which the Root switch generates and sends Hello BPDUs.






22. External BGP.






23. A method that creates three thresholds per egress queue in the Cisco 3560 switch. Traffic is divided into the three queues based on CoS value - and given different likelihoods (weight) for tail drop when congestion occurs based on which egress queue






24. Customer edge.






25. 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.






26. Link Access Procedure for Frame-Mode Bearer Services.






27. The original MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. It is slightly different from LDP - but functionally equivalent. See also LDP.






28. Three core security functions.






29. Boot Protocol. A standard (RFC 951) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address - along with other configuration settings - including a subnet mask and default gateway IP address.






30. A Cisco IOS configuration tool for routing protocols by which routing updates may be filtered.






31. An MPLS term referring to the MPLS label just before the IP header. Also called the VPN label when implementing MPLS VPNs.






32. Used by WRED to calculate the maximum percentage of packets discarded when the average queue depth falls between the minimum and maximum thresholds.






33. 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.






34. A commonly used name for Multi-VRF CE.






35. An OSPF external route for which internal OSPF cost is not added to the cost of the route as it was redistributed into OSPF.






36. 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






37. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised outside the local confederation sub-AS.






38. 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.






39. 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.






40. A message sent by a host when it wants to leave a group - addressed to the All Multicast Routers address 224.0.0.2.






41. 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.






42. On a multiaccess network - when a PIM-DM or PIM-SM router receives a Prune message - it starts a 3-second timer. If it receives a Join message on the multiaccess network from another router before the timer expires - it considers the message as an ov






43. Backup designated router.






44. Another name for 802.1Q-in-Q. See 802.1Q-in-Q.






45. Operation - Administration - and Maintenance.






46. An NTP client that assumes that a server will send NTP broadcasts - removing the requirement for the client to have the NTP server's IP address preconfigured.






47. Database Description.






48. The IEEE standardized protocol for VLAN trunking.






49. In shaping and policing - commonly used to refer to the shaping or policing rate. For WAN services - a common reference to the bit rate defined in the WAN service business contract for each VC.






50. Removing unwanted VLANs from a Layer 2 path.