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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. Classless interdomain routing.






2. A mapping between each DSCP value and a corresponding CoS value - often used in Cisco LAN switches when performing classification for egress queuing.






3. Diffusing Update Algorithm.






4. An attack by which the attacker initiates many TCP connections to a server - but does not complete the TCP connections - by simply not sending the third segment normally used to establish the connection. The server may consume resources and reject ne






5. A Cisco-proprietary feature by which multiple routers can provide interface IP address redundancy so that hosts using the shared - virtual IP address as their default gateway can still reach the rest of a network even if one or more routers fail.






6. A BGP ASN whose value is between 64 -512 and 65 -535. These values are not assigned for use on the Internet - and can be used for private purposes - typically either within confederations or by ISPs to hide the ASN used by some customers.






7. An NTP client that assumes that a server will send NTP broadcasts - removing the requirement for the client to have the NTP server's IP address preconfigured.






8. A table inside a router that holds the path attributes and NLRI known by the BGP implementation on that router.






9. A router feature used when a router sees an ARP request searching for an IP host's MAC - when the router believes the IP host could not be on that LAN because the host is in another subnet. If the router has a route to reach the subnet where the ARP-






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






11. The one VLAN on an 802.1Q trunk for which the endpoints do not add the 4-byte 802.1Q tag when transmitting frames in that VLAN.






12. Aka Rapid Per-VLAN Spanning Tree Plus.






13. A term referring to the processes and bits in the data stream used to manage the Telco TDM hierarchy.






14. 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.






15. In switch port security - the process whereby the switch dynamically learns the MAC address(es) of the device(s) connected to a switch port - and then adds those addresses to the running configuration as allowed MAC addresses for port security.






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






17. Defined in IEEE 802.1AD - defines a messaging protocol used to negotiate the dynamic creation of PortChannels (EtherChannels) and to choose which ports can be placed into an EtherChannel.






18. A type of IPv4 and IPv6 traffic designed primarily to provide one-to-many connectivity but unlike broadcast - has the capability to control the scope of traffic distribution.






19. An Internet standard authentication protocol that uses secure hashes and a three-way handshake to perform authentication over a PPP link.






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






21. 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.






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






23. Layer 2 payload compression.






24. A set of rules by which BGP examines the details of multiple BGP routes for the same NLRI and chooses the single best BGP route to install in the local BGP table.






25. 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.






26. A set of parameters for CBAC to perform in its traffic inspection process.






27. Source-specific multicast.






28. A DiffServ PHB that defines eight values that provide backward compatibility with IP Precedence.






29. In MPLS VPNs - an entity in a single router that provides a means to separate routes in different VPNs. The VRF includes per-VRF instances of routing protocols - a routing table - and an associated CEF FIB.






30. A feature of Ethernet NICs. When the NIC transmits an electrical signal - it "loops" the transmitted electrical current back onto the receive pair. By doing so - if another NIC transmits a frame at the same time - the NIC can detect the overlapping r






31. A protection against problems caused by unidirectional links between two switches. Uses messaging between switches to detect the loop - err-disabling the port when the link is unidirectional.






32. A number between 1 and 64 -511 (public) and 64 -512 and 65 -535 (private) assigned to an AS for the purpose of identifying a specific BGP domain.






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






34. An STP timer that dictates how long a switch should wait when it ceases to hear Hellos.






35. An 802.1d STP port state in which the port sends and receives frames.






36. This term has two BGP-related definitions. First - it is the normal process in which a router - before sending an Update to an eBGP peer - adds its local ASN to the beginning of the AS_PATH path attribute. Second - it is the routing policy of purpose






37. Border Gateway Protocol.






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






39. A wireless LAN that offers connections to the Internet from public places - such as airports - hotels - and coffee shops.






40. An MQC configuration style by which one policy map calls a second policy map. For example - a shaping policy map can call an LLQ policy map to implement LLQ for packets shaped by CB Shaping.






41. 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.






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






43. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised outside the local confederation sub-AS.






44. The specific frequency subband on which the radio card or access point is operating. The RF channel is set in the access point or ad hoc stations.






45. An enhanced version of T1 framing - as compared with the earlier Superframe (D4) standard.






46. The process of combining multiple synchronized input signals over a single medium by giving each signal its own time slot - and then breaking out those signals.






47. The initial 802.11 common key encryption mechanism; vulnerable to hackers.






48. A category used by a policer to classify packets relative to the traffic contract. The bit rate implied by all conforming packets is within the traffic contract.






49. 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.






50. A category used by a policer to classify packets relative to the traffic contract. With two-color policers - these packets are considered to be above the contract; for three-color - these packets are above the Bc setting - but within the Be setting.