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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 type of OSPF packet - used to communicate LSAs to another router.






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






3. Mark probability denominator.






4. Port Aggregation Protocol.






5. Aka minimum CIR.






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






7. Point-to-Point Protocol over Ethernet. A convention often used as the data link protocol over Cable in which Ethernet is used as the data link protocol - but with PPP being encapsulated inside Ethernet. The combination gives the data link features of






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






9. With private VLANs - a secondary VLAN in which the ports can send and receive frames only with promiscuous ports in the primary VLAN.






10. Refers to how a router views a BGP peer relationship - in which the peer is in the same AS.






11. A bit in the LAPF Frame Relay header that - when set to 1 - implies that the frame has experienced congestion.






12. A 3-bit field in the first 3 bits of the ToS byte in the IP header - used for QoS marking.






13. A Cisco 12000 series router feature that combines the key features of LLQ and CQ to provide similar congestion-management features.






14. Carrier sense multiple access with collision detection. A media-access mechanism where devices ready to transmit data first check the channel for a carrier. If no carrier is sensed for a specific period of time - a device can transmit. If two devices






15. An exterior routing protocol that predates BGP. It is no longer used today.






16. 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.






17. The Lempel Ziv STAC compression algorithm is used in Frame Relay networks to define dynamic dictionary entries that list a binary string from the compressed data and an associated smaller string that represents it during transmission






18. A workstation or server configured to collect and present RMON data for reporting purposes.






19. Ethernet MAC address that represents a single NIC or interface.






20. A vendor consortium that formerly worked to further Frame Relay common vendor standards.






21. 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.






22. On a single computer - one layer provides a service to a higher layer. The software or hardware that implements the higher layer requests that the next lower layer perform the needed function.






23. Cisco-proprietary STP feature in which a switch port - known to not have a bridge or switch attached to it - transitions from disabled to forwarding state without using any intermediate states.






24. Per-VLAN Spanning Tree Plus.






25. Copper cable with RJ-45 connectors in which a twisted pair at pins 1 -2 on the first end of the cable is connected to pins 3 -6 on the other end - with a second pair connected to pins 3 -6 on the first end and pins 1 -2 on the other end.






26. A Cisco IOS feature that performs deep packet inspection to classify packets based on application layer information.






27. Data Carrier Detect.






28. An alternative software loaded into a Cisco router - used for basic IP connectivity; most useful when Flash memory is broken and you need IP connectivity to copy a new IOS image into Flash memory.






29. The data structure used by OSPF to hold LSAs.






30. 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.






31. Cisco IOS router feature by which a route map determines how to forward a packet - typically based on information in the packet other than the destination IP address.






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






33. A standard (RFC 2131) protocol by which a host can dynamically broadcast a request for a server to assign to it an IP address - along with other configuration settings - including a subnet mask and default gateway IP address. DHCP provides a great de






34. A style of attack in which an ICMP Echo is sent with a directed broadcast (subnet broadcast) destination IP address - and a source address of the host that is being attacked. The attack can result in the Echo reaching a large number of hosts - all of






35. The signal strength of the RF signal at the output of the radio card or access point transmitter - before being fed into the antenna. Measured in milliwatts - watts - or dBm.






36. 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.






37. An exterior routing protocol designed to exchange prefix information between different autonomous systems. The information includes a rich set of characteristics called path attributes - which in turn allows for great flexibility regarding routing ch






38. IP routing The simplest MPLS application - involving the advertisement of an IGP to learn IP routes - and LDP or TDP to advertise labels.






39. 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.






40. The IP address to which Label Distribution Protocol (LDP) sends LDP Hellos. Also used in IP multicast to send packets to all multicast routers.






41. A method of applying a mathematical formula - with input including a private key - the message contents - and sometimes a shared text string - with the resulting digest being included with the message. The sender and the receiver perform the same mat






42. A Cisco-proprietary BGP feature. The administrative weight can be assigned to each NLRI and path locally on a router - impacting the local router's choice of the best BGP routes. The value cannot be communicated to another router.






43. Modified Deficit Round-Robin.






44. Per-Hop Behavior.






45. An early T1 framing standard.






46. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised to any other peer.






47. A calculated TCP variable - used along with the TCP CWND variable - to dictate a TCP sender's behavior when it recognizes packet loss. As CWND grows after packet loss - the TCP sender increases CWND based on Slow Start rules - until CWND grows to be






48. 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 remove the attribute before advertisi






49. Ready To Send.






50. 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.







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