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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. Distance Vector Multicast Routing Protocol.






2. Edge LSR.






3. AS number. A number between 1 and 64 -511 (public) and 64 -512 and 65 -535 (private) assigned to an AS for the purpose of identifying a specific BGP domain.






4. Timer An STP timer that dictates how long a port should stay in the listening state and the learning state.






5. A tunneling protocol that can be used to encapsulate many different protocol types - including IPv4 - IPv6 - IPsec - and others - to transport them across a network.






6. Maximum transmission unit.






7. The process of sending an infinite-metric route in routing updates when that route fails.






8. In TCP - a TCP host sets the TCP header's Window field to the number of bytes it allows the other host to send before requiring an acknowledgement. In effect - the receiving host - by stating a particular window size - grants the sending host the rig

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9. Congestion window.






10. Inside telcos' original TDM hierarchy - a unit that combines multiple DS1s into a single channel






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






12. A calculated TCP variable - used along with the TCP CWND variable - to dictate a TCP sender's behavior when it recognizes packet loss. As CWND grows after packet loss - the TCP sender increases CWND based on Slow Start rules - until CWND grows to be






13. The process of forwarding packets through a router. Also called IP forwarding.






14. Network Address Translation-Protocol Translation.






15. Defined in RFC 3748 - the protocol used by IEEE 802.1X for exchanging authentication information.






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






17. A type of routing protocol convergence event in which the metric for a route increases slightly over time because of the advertisement of an invalid route.






18. A dotted-decimal number used to help define the structure of an IP address. The binary 0s in the mask identify the host portion of an address - and the binary 1s identify either the combined network and subnet part (when thinking classfully) or the n






19. 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.






20. The IPv6 protocol used for the discovery of which hosts are listening for which multicast IP addresses for IPv6.






21. A switch feature that examines incoming frames - comparing the source IP and MAC addresses to the DHCP snooping binding database - filtering frames whose addresses are not listed in the database for the incoming interface.






22. Sent by a PIM-DM or PIM-SM router when it receives a multicast packet for a group on a LAN interface that is in the outgoing interface list for the group; includes the administrative distance of the unicast routing protocol used to learn the network






23. The initial 802.11 common key encryption mechanism; vulnerable to hackers.






24. A term referring to how a router views a BGP peer relationship - in which the peer is in another AS.






25. 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.






26. In IPv6 - a Router Advertisement message used by an IPv6 router to send information about itself to nodes and other routers connected to that router.






27. The process - defined by FRF.5 and FRF.8 - for combining ATM and FR technologies for an individual VC.






28. A type of IPv4 and IPv6 traffic designed primarily to provide one-to-many connectivity but unlike broadcast - has the capability to control the scope of traffic distribution.






29. In Frame Relay - a link between a router and a Frame Relay switch.






30. An IPv6 address type that is used by a number of hosts in a network that are providing the same service. Hosts accessing the service are routed to the nearest host in an anycast environment based on routing protocol metrics.






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






32. A wireless LAN physical layer that operates at up to 54-Mbps data rates using OFDM in the 5-GHz band.






33. A set of parameters for CBAC to perform in its traffic inspection process.






34. Peak information rate.






35. A type of logic for how a router uses a default route. When a default route exists - and no more specific match is made between the destination of the packet and the routing table - the default route is used.






36. Multilayer Switching.






37. A serial-line encoding standard that sends alternating positive and negative 3-volt signals for binary 1 - and no signal (0 V) for binary 0.






38. Clear To Send.






39. Protocol Independent Multicast dense-mode routing protocol.






40. An IEEE standard that - when used with EAP - provides user authentication before their connected switch port allows the device to fully use the LAN.






41. A Cisco-proprietary feature by which multiple routers can provide interface IP address redundancy so that hosts using the shared - virtual IP address as their default gateway can still reach the rest of a network even if one or more routers fail.






42. An IPv6 migration strategy in which a host or router supports both IPv4 and IPv6 natively.






43. The two computers use a protocol with which to communicate with the same layer on another computer. The protocol defined by each layer uses a header that is transmitted between the computers to communicate what each computer wants to do.






44. 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.






45. Smoothed Round-Trip Time.






46. The multicast IP address 224.0.0.6 - listened for by DR and BDR routers.






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






48. A Cisco-proprietary messaging protocol used to negotiate the dynamic creation of PortChannels (EtherChannels) and to choose which ports can be placed into an EtherChannel.






49. 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.






50. A method for optimizing the flow of multicast IP packets passing through a LAN switch. The switch using IGMP snooping examines IGMP messages to determine which ports need to receive traffic for each multicast group.