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CCIE Vocab

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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. 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.

2. A term used with WFQ for the number assigned to a packet as it is enqueued into a WFQ queue. WFQ schedules the currently lowest FT packet next.

3. Low-latency queuing.

4. Ethernet feature in which a NIC or Ethernet port can both transmit and receive at the same instant in time. It can be used only when there is no possibility of collisions. Loopback circuitry on NIC cards is disabled to use full duplex.

5. The algorithm used by OSPF and IS-IS to compute routes based on the LSDB.

6. When a wireless station connects to an access point - the access point assigns an association ID (AID) to the station. Various protocols - such as power-save mode - make use of the association ID.

7. A characterization of a BGP path attribute in which all BGP implementations must support and understand the attribute (well known) - but BGP Updates can either include the attribute or not depending on whether a related feature has been configured (d

8. Address Resolution Protocol. Defined in RFC 826 - a protocol used on LANs so that an IP host can discover the MAC address of another device that is using a particular IP address.

9. 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.

10. A message that each host sends - either in response to a router Query message or on its own - to all multicast groups for which it would like to receive multicast traffic.

11. Defined in IEEE 802.1d - a protocol used on LAN bridges and switches to dynamically define a logical network topology that allows all devices to be reached - but prevents the formation of loops.

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

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

14. A process whereby a switch - when making a forwarding decision - uses not only Layer 2 logic but other OSI layer equivalents as well.

15. Excess Burst.

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

17. Authentication - authorization - and accounting.

18. Digital Signal Level 0.

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

20. An Internet standard serial data-link protocol - used on synchronous and asynchronous links - that provides data-link framing - link negotiation - Layer 3 interface features - and other functions.

21. As defined in RFC 3623 - graceful restart allows for uninterrupted forwarding in the event that an OSPF router's OSPF routing process must restart. The router does this by first notifying the neighbor routers that the restart is about to occur; the n

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

23. Finish time.

24. Class-Based Weighted Fair Queuing.

25. 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.

26. With PIM on a multiaccess network - the PIM router with the highest IP address on the subnet. It is also the IGMPv1 Querier. The DR is responsible for the following tasks: - Sending PIM register and PIM join and prune messages toward the RP to infor

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

28. Retransmission Timeout.

29. A component that interfaces with a phone using IP and provides connections to the Public Switched Telephone Network (PSTN).

30. 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.

31. Aka Rapid Per-VLAN Spanning Tree Plus.

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

33. Digital Signal Level 1.

34. The All OSPF DR Routers multicast IP address - listened for by DR and BDR routers.

35. Ethernet process by which devices attached to the same cable negotiate their speed and the duplex settings over the cable.

36. Virtual circuit.

37. 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

38. PIM-DM is a method of routing multicast packets that depends on a flood-and-prune approach. PIM Dense Mode gets its name from the assumption that there are many receivers of a particular multicast group - close together (from a network perspective).

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

40. High Density Binary 3.

41. Policing in which a single rate is metered - and packets are placed into one of three categories (conform - exceed - or violate).

42. A wireless LAN physical layer that operates at up to 54-Mbps data rates using OFDM in the 5-GHz band.

43. Spanning Tree Protocol.

44. Congestion window.

45. Another term for summary route.

46. A BGP feature by which a router learns iBGP routes - and then forwards them to other iBGP peers - reducing the required number of iBGP peers while also avoiding routing loops.

47. A serial-line encoding standard like B8ZS - but with each set of four consecutive 0s being changed to include a Bipolar Violation to maintain synchronization.

48. An optional nontransitive BGP path attribute that lists the route reflector cluster IDs through which a route has been advertised - as part of a loop-prevention process similar to the AS_PATH attribute.

49. The range through that IANA has assigned for use in private multicast domains.

50. The range through 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.