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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. A 3-bit field in an 802.1Q header used for marking frames.






2. The same thing as TCP code bits. See TCP code bits.






3. An attack similar to a smurf attack - but using packets for the UDP Echo application instead of ICMP.






4. An 802.11 frame that access points or stations in ad hoc networks send periodically so that wireless stations can discover the presence of a wireless LAN and coordinate use of certain protocols - such as power-save mode.






5. Generic routing encapsulation.






6. Data terminal equipment.






7. Temporal Key Integrity Protocol.






8. An interface on a Cisco IOS-based switch that is treated as if it were an interface on a router.






9. In SNMP - the process of a manager using successive GetNext and GetBulk commands to discover the exact MIB structure supported by an SNMP agent. The process involves the manager asking for each successive MIB leaf variable.






10. Variable-length subnet masking.






11. A WRED process by which WRED discards all newly arriving packets intended for a queue - based on whether the queue's maximum threshold has been exceeded.






12. 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.






13. The router that will receive the group traffic when a multicast router forwards group traffic to another router.






14. A standard (RFC 903) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address. See also ARP.






15. Exterior Gateway Protocol.






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






17. Ready To Send.






18. An exterior routing protocol that predates BGP. It is no longer used today.






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. Finish time.






21. A standard (RFC 951) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address - along with other configuration settings - including a subnet mask and default gateway IP address.






22. 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.






23. Three core security functions.






24. Priority queue and priority queuing.






25. A NAT term describing the process of multiplexing TCP and UDP flows - based on port numbers - to a small number of public IP addresses. Also called NAT overloading.






26. An MPLS VPN term referring to an LSR that has no direct customer connections - meaning that the P router does not need any visibility into the VPN customer's IP address space.






27. When a PIM-SM router switches from RPT to SPT - it sends a PIM-SM Prune message for the source and the group with the RP bit set to its upstream router on the shared tree. RFC 2362 uses the notation PIM-SM (S - G) RP-bit Prune for this message.






28. 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.






29. 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.






30. Backup designated router.






31. Permanent virtual circuit.






32. Assured Forwarding. A set of DiffServ PHBs that defines 12 DSCP values - with four queuing classes and three drop probabilities within each queuing class.






33. A method of applying a mathematical formula - with input including a private key - the message contents - and sometimes a shared text string - with the resulting digest being included with the message. The sender and the receiver perform the same mat






34. With OSPF - the OSPF router that wins an election amongst all current neighbors. The DR is responsible for flooding on the subnet - and for creating and flooding the type 2 LSA for the subnet.






35. The range 233.0.0.0 through 233.255.255.255 that IANA has reserved (RFC 2770) on an experimental basis. It can be used by anyone who owns a registered autonomous system number to create 256 global multicast addresses.






36. In 802.1X - the computer that stores usernames/passwords and verifies that the correct values were submitted before authenticating the user.






37. A Cisco switch feature that permits limiting traffic arriving at switch ports by percentage or absolute bandwidth. Separate thresholds are available per port for unicast - multicast - and broadcast traffic.






38. The Cisco IOS Router IP Traffic Export feature - intended for intrusion detection - exports IP traffic that has signs of an attack - such as duplicate IP packets simultaneously received on two or more of a router's interfaces.






39. Port Aggregation Protocol.






40. An MPLS term referring to the first of several labels when an MPLS-forwarded packet has multiple labels (a label stack).






41. The MPLS feature by which an ingress E-LSR copies the IP packet's IP TTL field into the MPLS header's TTL field.






42. 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.






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






44. AutoQoS is a macro that creates and applies quality of service configurations based on Cisco best-practice recommendations.






45. Jargon referring to the minimum value to which adaptive shaping will lower the shaping rate.






46. When multiple routers are connected to a subnet - only one should be sending IGMP queries. It is called a querier. IGMPv1 does not have any rules for electing a querier. In IGMPv2 and IGMPv3 - a router with the lowest interface IP address on the subn






47. Link-state advertisement.






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






49. The multicast addresses assigned by IANA.






50. The number of beacons that governs how often multicast frames are sent over a wireless LAN.