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CCIE Vocab

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  • 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. This term has two BGP-related definitions. First - it is the normal process in which a router - before sending an Update to an eBGP peer - adds its local ASN to the beginning of the AS_PATH path attribute. Second - it is the routing policy of purpose






2. Rapid Spanning Tree Protocol.






3. The range 239.0.0.0 through 239.255.255.255 that IANA has assigned for use in private multicast domains.






4. WRED is a method of congestion avoidance that works by dropping packets before the output queue becomes completely full. WRED can base its dropping behavior on IP Precedence or DSCP values to drop low-priority packets before high-priority packets.






5. A BGP process by which a router reapplies routing policy configuration (route maps - filters - and the like) based on stored copies of sent and received BGP Updates.






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






7. Aka Rapid Per-VLAN Spanning Tree Plus.






8. A BGP path attribute that lists ASNs through which the route has been advertised. The AS_PATH includes four types of segments: AS_SEQ - AS_SET - AS_CONFED_SEQ - and AS_CONFED_SET. Often - this term is used synonymously with AS_SEQ






9. Another term for Port Address Translation. See PAT.






10. The process of taking routes known through one routing protocol and advertising those routes with another routing protocol.






11. Similar to an appliance firewall - in that interfaces are placed into security zones. Traffic is allowed between interfaces in the same zone. You can apply policies to filter and control traffic between zones.






12. Time-division multiplexing.






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






14. Used to reserve network resources for a flow as it traverses the network. A device that creates an RSVP reservation guarantees that it can provide the bandwidth - latency - or other resources that are requested by RSVP.






15. From the perspective of one routing protocol - a route that was learned by using route redistribution.






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






17. The process of successive neighboring routers exchanging LSAs such that all routers have an identical LSDB for each area to which they are attached.






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






19. Defines a particular behavior for FTP regarding the establishment of TCP data connections. In passive mode - an FTP server uses the FTP PORT command - over the FTP control connection - to tell the FTP client the port on which the server will be liste






20. Controls the distribution of multicast traffic by checking the TTL values configured on the interfaces. It forwards the multicast packet only on those interfaces whose configured TTL value is less than or equal to the TTL value of the multicast packe






21. The RMON function of tracking a particular variable. RMON events trigger RMON alarms.






22. 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.






23. Customer edge.






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






25. Data Set Ready.






26. A Cisco IOS configuration tool that can be used to match routing updates based on a base network address - a prefix - and a range of possible masks used inside the values defined by the base network address and prefix.






27. A dotted-decimal number that represents a subnet. It is the lowest numeric value in the range of IP addresses implied by a subnet number and prefix/mask.






28. 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.






29. In the PIM-SM design - the central distribution point to which the multicast traffic is first delivered from the source designated router.






30. An IPv6/IPv4 tunneling method that is designed for transporting IPv6 packets within a site where a native IPv6 infrastructures is not available.






31. Mark probability denominator.






32. A field in the IP header that is decremented at each pass through a Layer 3 forwarding device.






33. Controls the distribution of multicast traffic for the private multicast address range 239.0.0.0 to 239.255.255.255 by configuring a filter and applying it on the interfaces.






34. Class of Service.






35. A wireless LAN that includes the use of access points. Infrastructure mode connects wireless users to a wired network and allows wireless users to roam throughout a facility between different access points. All 802.11 data frames in an infrastructure






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






37. Neighbor Solicitation.






38. A serial-line encoding standard that substitutes Bipolar Violations in a string of eight binary 0s to provide enough signal transitions to maintain synchronization.






39. An intrusion detection system that safeguards the wireless LAN from malicious and unauthorized access.






40. A BGP feature that defines the IP TTL field value in packets sent between two eBGP peers. This feature is required when using IP addresses other than the interface IP address on the link between peers.






41. Reduces the bandwidth necessary for radio management information - such as access point status messages - that is sent across the network by eliminating redundant management information.






42. A bit in the ATM cell header that - when set to 1 - means that if a device needs to discard frames - it should discard the frames with DE 1 first.






43. A characterization of a BGP path attribute in which BGP implementations are not required to support the attribute (optional) - and for which if a router receives a route with such an attribute - the router should remove the attribute before advertisi






44. From one perspective - DTE devices are one of two devices on either end of a communications circuit - specifically the device with less control over the communications. In Frame Relay - routers connected to a Frame Relay access link are DTE devices.






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






46. An IP variable that defines the largest size allowed in an IP packet - including the IP header. IP hosts must support an MTU of at least 576 bytes.






47. A mechanism that counters collisions caused by hidden nodes. If enabled - the station or access point must first send an RTS frame and receive a CTS frame before sending each data frame.






48. Local Management Interface.






49. With DiffServ - a DSCP marking and a related set of QoS actions applied to packets that have that marking.






50. A BGP ASN whose value is between 64 -512 and 65 -535. These values are not assigned for use on the Internet - and can be used for private purposes - typically either within confederations or by ISPs to hide the ASN used by some customers.






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