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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. Multicast addresses that are not assigned by IANA.






2. The multicast addresses assigned by IANA.






3. VLAN Trunking Protocol.






4. Boot Protocol. 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.






5. Variable-length subnet masking.






6. 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.






7. Hot Standby Router Protocol.






8. A VC that is set up dynamically when needed. An SVC can be equated to a dial-on-demand connection in concept.






9. Management Information Base.






10. The Frame Relay protocol used between a DCE and DTE to manage the connection. Signaling messages for SVCs - PVC Status messages - and keepalives are all LMI messages.






11. 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.






12. Provides dynamic inspection of traffic as it traverses the router. It uses Context-Based Access Control (CBAC) to look deeper into a packet than an access list can. It tracks outbound traffic and dynamically allows in responses to that traffic.






13. Port Address Translation.






14. Link-State Refresh. A timer that determines how often the originating router should reflood an LSA - even if no changes have occurred to the LSA.






15. An E-LSR in an MPLS VPN network whose role in a particular discussion is to receive labeled packets from other LSRs and then forward the packets as unlabeled packets to CE routers.






16. Modified Deficit Round-Robin.






17. A state variable kept by a router for each known neighbor or potential neighbor.






18. Committed information rate.






19. In wireless LANs - a mechanism that counters issues related to RF interference by dividing a larger 802.11 data frame into smaller frames that are sent independently to the destination. See also LFI.






20. A router that is allowed to receive a packet from an OSPF router and then forward the packet to another OSPF router.






21. The term to describe a router that is neither the DR nor the BDR on a subnet that elects a DR and BDR.






22. An 802.1w RSTP port state in which the port is an alternative Designated Port on some LAN segment.






23. Bipolar 8 Zero Substitution. A serial-line encoding standard that substitutes Bipolar Violations in a string of eight binary 0s to provide enough signal transitions to maintain synchronization.






24. A set of QoS RFCs that redefines the IP header's ToS byte - and suggests specific settings of the DSCP field and the implied QoS actions based on those settings.






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






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






27. Direct sequence spread spectrum.






28. The portion of PPP focused on supporting the CDP protocol.






29. A term referring to the MQC class-map command and its related subcommands - which are used for classifying packets.






30. A wireless LAN physical layer that is backward compatible with 802.11b and operates at up to 54-Mbps data rates using OFDM in the 2.4-GHz band.






31. With shaping - the number of bits allowed to be sent every Tc. Also defines the size of the token bucket when Be = 0.






32. A message sent by each host - either in response to a router query or on its own - to all multicast groups for which it would like to receive multicast traffic. The destination address on the Report is 224.0.0.22 - and a host can specify the source a






33. The first 6 bits of the DS field - used for QoS marking.






34. The destination VLAN for an RSPAN session.






35. A set of four hex digits listed in an IPv6 address. Each quartet is separated by a colon.






36. The combination of MPLS labels and links over which a packet will be forwarded over an MPLS network - from the point of ingress to the MPLS network to the point of egress.






37. Receiver's advertised window.






38. An SPF calculation for which a router does not need to run SPF for any LSAs inside its area - but instead runs a very simple algorithm for changes to LSAs outside its own area.






39. Weighted random early detection.






40. Permanent virtual circuit.






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






42. A BGP term referring to an IP prefix and prefix length.






43. One of the two modes of MDRR - in which the priority queue is serviced between each servicing of the non-priority queues.






44. A TCP variable that defines the largest number of bytes allowed in a TCP segment's Data field. The calculation does not include the TCP header. With a typical IP MTU of 1500 bytes - the resulting default MSS would be 1460. TCP hosts must support an M






45. A BGP path attribute that is communicated throughout a single AS to signify which route of multiple possible routes is the best route to be taken when leaving that AS. A larger value is considered to be better.






46. A mechanism for conserving battery power in wireless stations. The access point buffers data frames destined to sleeping stations - which wake periodically to learn from information in the beacon frame whether or not data frames are waiting for trans






47. An OSPF timer that determines how long an LSA can remain in the LSDB without having heard a reflooded copy of the LSA.






48. Protocol Independent Multicast sparse-mode routing protocol.






49. Version 4 of the IP protocol - which is the generally deployed version worldwide (at publication) - and uses 32-bit IP addresses.






50. IP multicast address range from 224.0.0.0 through 239.255.255.255.