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






2. EAP over LAN.






3. The process of combining multiple synchronized input signals over a single medium by giving each signal its own time slot - and then breaking out those signals.






4. A component of the IOS IP SLA feature. An IP SLA responder is a router configured to respond to a particular IP SLA message initiated by another router - allowing the routers to work together to provide performance information including UDP jitter an






5. Defined in RFC 1631 - a method of translating IP addresses in headers with the goal of allowing multiple hosts to share single public IP addresses - thereby reducing IPv4 public address depletion.






6. A NAT term describing an IP address representing a host that resides outside the enterprise network - with the address being used in packets inside the enterprise network.






7. A Frame Relay traffic shaping feature during which the shaping rate is reduced when the shaper notices congestion through the receipt of BECN or ForeSight messages.






8. The difference between the measured signal power and the noise power that a particular receiver sees at a given time. Higher SNRs generally indicate better performance.






9. The combination of PVST+ and Rapid Spanning Tree. It provides subsecond convergence time and is compatible with PVST+ and MSTP.






10. With some routing protocols - the time period between successive Hello messages.






11. Modified Deficit Round-Robin.






12. A possible side effect of a scheduler that performs strict-priority scheduling of a queue - which can result in lower-priority queues getting little or no service.






13. The operating mode of shaped round-robin that provides behavior like CBWFQ with bandwidth allocated between different traffic classes by a relative amount rather than absolute percentage of the available bandwidth.






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






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






16. A designated router that is directly connected with a source of the multicast group.






17. Structure of Management Information.






18. Weighted round-robin.






19. A technology that enables frequency reuse. Two variants exist: frequency hopping (FHSS) and direct sequence (DSSS). Both techniques spread the signal power over a relatively wide portion of the frequency spectrum over time - to reduce interference be






20. With EIGRP - a route that is not a successor route - but that meets the feasibility condition; can be used when the successor route fails - without causing loops.






21. Neighbor Discovery Protocol.






22. An MPLS data structure used for forwarding labeled packets. The LFIB lists the incoming label - which is compared to the incoming packet's label - along with forwarding instructions for the packet.






23. 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.






24. Discard Eligible.






25. A communication protocol between hosts and a multicast router by which routers learn of which multicast groups' packets need to be forwarded onto a LAN.






26. Operates in dense mode and depends on its own unicast routing protocol that is similar to RIP to perform its multicast functions.






27. High Density Binary 3.






28. EIGRP (and IGRP) allows for the use of bandwidth - load - delay - MTU - and link reliability; the K values refer to an integer constant that includes these five possible metric components. Only bandwidth and delay are used by default - to minimize re






29. 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.






30. The information maintained by a router for each multicast entry in its multicast routing table - such as incoming interface - outgoing interface list - Uptime timer - Expire timer - etc.






31. Link-state database.






32. Alternate Mark Inversion. 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.






33. 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.






34. The underlying algorithms associated with RIP.






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






36. Enables a wireless client to securely roam between access points in the same subnet or between subnets with access point handoff times within 50 ms.






37. A mechanism in which VLAN information can extend over another set of 802.1Q trunks by tunneling the original 802.1Q traffic with another 802.1Q tag. It allows a service provider to support transparent VLAN services with multiple customers - even if t






38. The mandatory contention-based 802.11 access protocol that is also referred to as CSMA/CA.






39. A term used with Cisco LAN switches - referring to a queue treated with strict-priority scheduling.






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






41. The portions of PPP focused on features that are related to specific Layer 3 protocols.






42. An individual line in an ACL.






43. WRED compares this setting to the average queue depth to decide whether packets should be discarded. All packets are discarded if the average queue depth rises above this maximum threshold.






44. 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.






45. With RIP - the regular interval at which updates are sent. Each interface uses an independent timer - defaulting to 30 seconds.






46. A protection against problems caused by unidirectional links between two switches. Uses messaging between switches to detect the loop - err-disabling the port when the link is unidirectional.






47. Jargon used by STP mostly when discussing the root election process; refers to a Hello with a lower bridge ID. Sometimes refers to a Hello with the same bridge ID as another - but with better values for the tiebreakers in the election process.






48. 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.






49. Cisco IOS IP Service Level Agent feature. Provides for router-generated information useful for verifying network performance on a scheduled basis - and the associated reporting functions.






50. An 802.1w RSTP port state in which the port is not forwarding or receiving; covers 802.1d port states disabled - blocking - and listening.