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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 wireless LAN physical layer that operates at up to 11-Mbps data rates using DSSS in the 2.4-GHz band.






2. An IP variable that defines the largest size allowed in an IP packet - including the IP header. IP hosts must support an MTU of at least 576 bytes.






3. Per-VLAN Spanning Tree Plus.






4. EIGRP jargon meaning that EIGRP has placed a route into active status.






5. An OSPF router that connects to the backbone area and to one or more non-backbone area.






6. Jargon referring to any queue that receives priority service - often used for queues in an LLQ configuration that have the priority command configured.






7. A dotted-decimal number that represents a subnet. It is the lowest numeric value in the range of IP addresses implied by a subnet number and prefix/mask.






8. The term referring to a group of iBGP routers in a confederation - with the group members being assigned a hidden ASN for the purposes of loop avoidance.






9. 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.






10. An IPv6/IPv4 tunneling method that allows isolated IPv6 domains to be connected over an IPv4 network.






11. Modular QoS CLI.






12. 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.






13. Burst With shaping and policing - the number of additional bits that may be sent after a period of relative inactivity.






14. A characterization of a BGP path attribute in which all BGP implementations must support and understand the attribute (well known) - and all BGP Updates must include the attribute (mandatory).






15. Label Forwarding Information Base.






16. Sent by a PIM router to its upstream router to either request that the upstream router forward the group traffic or stop forwarding the group traffic that is currently being forwarded. If a PIM router wants to start receiving the group traffic - it l






17. In PIM-SM - the path of the group traffic that flows from the RP to the routers that need the traffic. It is also called the root-path tree (RPT) - because it is rooted at the RP.






18. A BGP neighbor state in which the BGP neighbors have stabilized and can exchange routing information using BGP Update messages.






19. A dotted-decimal number used to help define the structure of an IP address. The binary 0s in the mask identify the host portion of an address - and the binary 1s identify either the combined network and subnet part (when thinking classfully) or the n






20. 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.






21. With RIP - a per-route timer that increases until the router receives a routing update that confirms the route is still valid - upon which the timer is reset to 0. If the updates cease - the Invalid timer will grow - until reaching the timer setting






22. The content engine in a WCCP cluster - which determines how traffic will be distributed within the cluster.






23. A term relating to Cisco LAN switch tail-drop logic - in which multiple tail-drop thresholds may be assigned based on CoS or DSCP - resulting in some frames being discarded more aggressively than others.






24. Data Carrier Detect.






25. Virtual Router Redundancy Protocol.






26. A Cisco IOS configuration tool for routing protocols by which routing updates may be filtered.






27. A subset of a classful IP network - as defined by a subnet mask - which used to address IP hosts on the same Layer 2 network in much the same way as a classful network is used.






28. A generic term that refers to the data structure used by a layer in a layered network architecture when sending data.






29. The process of forwarding packets through a router. Also called IP forwarding.






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






31. PIM-SM is a method of routing multicast packets that requires some intelligence in the network about the locations of receivers so that multicast traffic is not flooded into areas with no receivers. PIM Sparse Mode gets its name from the assumption t






32. 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.






33. A type of routing protocol convergence event in which the metric for a route increases slightly over time because of the advertisement of an invalid route.






34. Rendezvous point.






35. 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.






36. Bootstrap Router.






37. In the PIM-SM design - the process by which a source DR - after it starts to receive the group traffic - encapsulates the multicast packets in the unicast packets and sends them to the RP.






38. A single label and link that is part of a complete LDP. See also label switched path.






39. Used by WRED to calculate the maximum percentage of packets discarded when the average queue depth falls between the minimum and maximum thresholds.






40. In two-rate policing - the second and higher rate defined to the policer.






41. Sent by a PIM-DM or PIM-SM router when it receives a multicast packet for a group on a LAN interface that is in the outgoing interface list for the group; includes the administrative distance of the unicast routing protocol used to learn the network






42. Virtual LAN.






43. In the context of SNMP - the Inform command is sent by an SNMP manager to communicate a set of variables - and their values - to another SNMP manager. The main purpose is to allow multiple managers to exchange MIB information - and work together - wi






44. 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.






45. The feature in a Cisco IOS device by which a terminal session's previously typed commands are remembered - allowing the user to recall the old commands to the command line through a simple key sequence (for example - the up-arrow key).






46. On a serial cable - the pin lead set by the DTE to tell the DCE that the DTE wants to send data.






47. A NAT term describing an IP address representing a host that resides outside the enterprise network - with the address being used in packets inside the enterprise network.






48. 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.






49. A BGP peer connection between two routers inside the same ASN - but in different confederation sub-autonomous systems.






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