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. A Cisco IOS configuration tool for RIP and EIGRP for which the list matches routes in routing updates - and adds a defined value to the sent or received metric for the routes. The value added to the metric is the offset.






2. A state for a route in an EIGRP topology table that indicates that the router believes that the route is stable - and it is not currently looking for any new routes to that subnet.






3. An EIGRP message that is used by neighbors to reply to a query. Reply messages require an Ack.






4. Label switched path.






5. In an IOS confederation configuration - the actual ASN as seen by eBGP peers.






6. 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






7. Inside telcos' original TDM hierarchy - a unit that combines multiple DS0s into a single channel






8. A Cisco-proprietary BGP feature. The administrative weight can be assigned to each NLRI and path locally on a router - impacting the local router's choice of the best BGP routes. The value cannot be communicated to another router.






9. Digital Signal Level 3.






10. In shaping and policing - the definition of parameters that together imply the allowed rate and bursts.






11. Copper cable with RJ-45 connectors in which a twisted pair at pins 1 -2 on the first end of the cable is connected to pins 3 -6 on the other end - with a second pair connected to pins 3 -6 on the first end and pins 1 -2 on the other end.






12. Typically used by protocols that perform flow control (like TCP) - a TCP window is the number of bytes that a sender can send before it must pause and wait for an acknowledgement of some of the yet-unacknowledged data.






13. Hot Standby Router Protocol.






14. The PDU used by a particular layer of a networking model - with x defining the layer.






15. Multilayer Switching.






16. A WRED process by which WRED does not discard packets during times in which a queue's minimum threshold has not been passed.






17. Data Terminal Ready.






18. In switch port security - the process whereby the switch dynamically learns the MAC address(es) of the device(s) connected to a switch port - and then adds those addresses to the running configuration as allowed MAC addresses for port security.






19. Edge LSR.






20. Frequency hopping spread spectrum.






21. Digital subscriber line - a common Internet service type for residential and business customers.






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






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






24. Message sent by a PIM-DM router to its upstream router asking to quickly restart forwarding the group traffic; sent using the unicast address of the upstream router.






25. RFC 1918-defined IPv4 network numbers that are not assigned as public IP address ranges - and are not routable on the Internet. Intended for use inside enterprise networks.






26. In the context of SNMP - the GetBulk command is sent by an SNMP manager - to an agent - requesting the values of multiple variables. The GetBulk command allows retrieval of complex structures - like a routing table - with a single command - as well a






27. The rate at which a policer limits the bits exiting or entering the policer.






28. A style of attack in which an ICMP Echo is sent with a directed broadcast (subnet broadcast) destination IP address - and a source address of the host that is being attacked. The attack can result in the Echo reaching a large number of hosts - all of






29. 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.






30. A TCP variable that defines the largest number of bytes allowed in a TCP segment's Data field. The calculation does not include the TCP header. With a typical IP MTU of 1500 bytes - the resulting default MSS would be 1460. TCP hosts must support an M






31. A process on a computing device that issues requests for SNMP MIB variables from SNMP agents - receives and processes the MIB data - and accepts unsolicited Trap messages from SNMP agents.






32. 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.






33. 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.






34. With RIP - a per-route timer (default 180 seconds) that begins when a route's metric changes to a larger value.






35. The second byte of the IP header - formerly known as the ToS byte and redefined by DiffServ.






36. An optional transitive BGP path attribute used to store 32-bit decimal values. Used for flexible grouping of routes by assigning the group the same COMMUNITY value. Other routers can apply routing policies based on the COMMUNITY value. Used in a larg






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






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






39. In MPLS - a term used to define a label that an LSR learned from a neighboring LSR.






40. A logical concept that represents the path over which frames travel between DTEs. VCs are particularly useful when comparing Frame Relay to leased physical circuits.






41. Structure of Management Information.






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






43. With OSPF - the encapsulation of OSPF messages inside IP - to a router with which no common subnet is shared - for the purpose of either mending partitioned areas or providing a connection from some remote area to the backbone area.






44. A field within a route entry in a routing update - used to associate a generic number with the route. It is used when passing routes between routing protocols - allowing an intermediate routing protocol to pass information about a route that is not n






45. Copper cable with RJ-45 connectors in which the wire at pin 1 on one end is connected to pin 1 on the other end; the wire at pin 2 is connected to pin 2 on the other end; and so on.






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






47. Cisco Group Management Protocol.






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 mapping between each DSCP value and a corresponding CoS value - often used in Cisco LAN switches when performing classification for egress queuing.






50. Regeneration of the Layer 2 encapsulation removed from frames forwarded in a SPAN session.