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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. An effort to reduce the query scope with EIGRP - using route summarization or EIGRP stub routers.






2. A TCP variable used as the basis for a TCP sender's timer defining how long it should wait for a missing acknowledgement before resending the data.






3. With RIP - the advertisement of a poisoned route out an interface - when that route was formerly not advertised out that interface due to split horizon rules.






4. A queuing scheduler concept - much like CQ's scheduler - in which queues are given some service in sequence. This term is often used with queuing in Cisco LAN switches.






5. An NTP mode in which two or more NTP servers mutually synchronize their clocks.






6. Autonomous System Boundary Router. An OSPF router that redistributes routes from some other source into OSPF.






7. Class of Service.






8. 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.






9. 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.






10. From one multicast router's perspective - the upstream router is another router that has just forwarded a multicast packet to that router.






11. Point-to-Point Protocol over Ethernet. A convention often used as the data link protocol over Cable in which Ethernet is used as the data link protocol - but with PPP being encapsulated inside Ethernet. The combination gives the data link features of






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






13. Any other router - sharing a common data link - with which a router exchanges Hellos - and for which the parameters in the Hello pass the parameter-check process.






14. Maximum transmission unit.






15. Protects against problems caused by unidirectional links between two switches. Watches for loss of received Hello BPDUs - in which case it transitions to a loop-inconsistent state instead of transitioning to a forwarding state.






16. Class-Based Weighted Fair Queuing.






17. Label switched path.






18. Neighbor Solicitation.






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






20. An architecture and set of documents that defines Cisco's best recommendations for how to secure a network.






21. Network Time Protocol.






22. 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






23. Defines a particular wireless LAN. The SSID configured in the radio card must match the SSID in the access point before the station can connect with the access point.






24. Any occurrence that could change a router's EIGRP topology table - including a received Update or Query - a failed interface - or the loss of a neighbor.






25. Generic routing encapsulation.






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






27. In IPv6 - an address used in the Neighbor Discovery (ND) process. The format for these addresses is FF02::1:FF00:0000/104 - and each IPv6 host must join the corresponding group for each of its unicast and anycast addresses.






28. As defined in RFCs 2765 and 2766 - a method of translating between IPv4 and IPv6 that removes the need for hosts to run dual protocol stacks. NAT-PT is an alternative to tunneling IPv6 over an IPv4 network - or vice versa.






29. A technology that sends a high-speed data stream over multiple subcarriers simultaneously. It is highly immune to multipath interference. 802.11a and 802.11g specify the use of OFDM.






30. With private VLANs - a secondary VLAN in which the ports can send and receive frames with each other - but not with ports in other secondary VLANS.






31. From a Layer 1 perspective - the process of using special strings of electrical signals over a transmission medium to inform the receiver as to which bits are overhead bits - and which fit into individual subchannels.






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






33. A type of spread spectrum that spreads RF signals over the frequency spectrum by transmitting the signal at different frequencies according to a hopping pattern. One of the original 802.11 physical layers used FHSS to offer data rates of 1 and 2 Mbps






34. A T1 alarm state that occurs when a device receives a Yellow Alarm signal. This typically means that the device on the other end of the line is in a Red Alarm state.






35. Cisco Express Forwarding.






36. 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.






37. A BGP path attribute that implies how the route was originally injected into some router's BGP table.






38. A security standard that includes both TKIP and AES and was ratified by the Wi-Fi Alliance.






39. Digital Signal Level 1.






40. The Cisco IOS feature by which special short key sequences can be used to move the cursor inside the current command line to more easily change a command.






41. The second most significant bit in the most significant byte of an Ethernet MAC address - a value of binary 0 implies that the address is a Universally Administered Address (UAA) (also known as Burned-In Address [BIA]) - and a value of binary 1 impli






42. The innermost MPLS header in an packet traversing an MPLS VPN - with the label value identifying the forwarding details for the egress PE's VRF associated with that VPN.






43. The range 232.0.0.0 through 232.255.255.255 that is allocated by IANA for SSM destination addresses and is reserved for use by source-specific applications and protocols.






44. On a serial cable - the pin lead set by the DCE to imply that the DCE is ready to signal using pin leads






45. Excess Burst.






46. The multicast IP address 224.0.0.5 - listened for by all OSPF routers.






47. A switch feature with which the switch watches ARP messages - determines if those messages may or may not be part of some attack - and filters those that look suspicious.






48. A DiffServ PHB - based on DSCP EF (decimal 46) - that provides low-latency queuing behavior as well as policing protection to prevent EF traffic from starving queues for other types of traffic.






49. A term used with Cisco LAN switches - referring to a DSCP value used when making QoS decisions about a frame. This value may not be the actual DSCP value in the IP header encapsulated inside the frame.






50. Voice over Frame Relay.