Test your basic knowledge |

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 802.1d STP port state in which the port does not send or receive frames - except for listening for received Hello BPDUs.






2. An OSPF external route for which internal OSPF cost is added to the cost of the route as it was redistributed into OSPF.






3. A contiguous group of data links that share the same OSPF area number.






4. A Cisco-proprietary protocol that defines how to perform authentication between an authenticator (for example - a router) and an authentication server that holds a list of usernames and passwords.






5. In IPv6 - a Router Advertisement message used by an IPv6 router to send information about itself to nodes and other routers connected to that router.






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






7. Policing in which two rates are metered - and packets are placed into one of three categories (conform - exceed - or violate).






8. A strategy for subnetting a classful network for which masks/prefixes are different for some subnets of that one classful network.






9. Backward Explicit Congestion Notification.






10. Discard Eligible.






11. An FRF standard for LFI for VoFR (FRF.11) VCs - in which all voice frames are interleaved in front of data frames' fragments.






12. Protocol Independent Multicast sparse-mode routing protocol.






13. A method for how a TCP sender grows its calculated CWND variable - thereby growing the allowed window for the connection. Congestion Avoidance grows CWND linearly.






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






15. 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.






16. A mechanism in which VLAN information can extend over another set of 802.1Q trunks by tunneling the original 802.1Q traffic with another 802.1Q tag. It allows a service provider to support transparent VLAN services with multiple customers - even if t






17. WRED compares this setting to the average queue depth to decide whether packets should be discarded. All packets are discarded if the average queue depth rises above this maximum threshold.






18. 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.






19. Router ID.






20. An 802.1d STP transitory port state in which the port does not send or receive frames - and does not learn MAC addresses - but does wait for STP convergence and for CAM flushing by the switches in the network.






21. Per-VLAN Spanning Tree Plus.






22. A calculation of the length of the AS_PATH PA - which includes 1 for each number in the AS_SEQ - 1 for an entire AS_SET segment - and possibly other considerations.






23. The multicast IP address 224.0.0.6 - listened for by DR and BDR routers.






24. The actual number of packets in a queue at a particular time.






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






26. Message sent by a PIM-DM router to a downstream router when it receives a Graft message from the downstream router; sent using the unicast address of the downstream router.






27. Virtual circuit.






28. A network/subnet to which only one OSPF router is connected.






29. Label Distribution Protocol.






30. 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 forward the attribute unchanged (tran






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






32. With OSPF - the encapsulation of OSPF messages inside IP - to a router with which no common subnet is shared - for the purpose of either mending partitioned areas or providing a connection from some remote area to the backbone area.






33. 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.






34. Prefix list.






35. 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.






36. An address type in IPv6 networks that is used only on the local link and never beyond that scope.






37. The protocol used in IPv6 for many functions - including address autoconfiguration - duplicate address detection - router - neighbor - and prefix discovery - neighbor address resolution - and parameter discovery.






38. 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.






39. A state for a route in an EIGRP topology table that indicates that the router believes that the route is stable - and it is not currently looking for any new routes to that subnet.






40. In BGP - a feature in which BGP routes cannot be considered to be a best route to reach an NLRI unless that same prefix exists in the router's IP routing table as learned via some IGP.






41. Multicast Open Shortest Path First.






42. Virtual Router Redundancy Protocol.






43. 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.






44. In IP routing - a term referring to the building of IP routing tables by IP routing protocols.






45. Retransmission Timeout.






46. Area Border Router. An OSPF router that connects to the backbone area and to one or more non-backbone areas.






47. 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.






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






49. 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






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