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CCIE Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
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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 bit in the ATM cell header that - when set to 1 - means that if a device needs to discard frames - it should discard the frames with DE 1 first.






2. In the context of SNMP - the GetNext command is sent by an SNMP manager - to an agent - requesting the value of a single MIB variable. The GetNext request identifies a variable for which the manager wants the variable name and value of the next MIB l






3. The second most significant bit in the most significant byte of an Ethernet MAC address - a value of binary 0 implies that the address is a Universally Administered Address (UAA) (also known as Burned-In Address [BIA]) - and a value of binary 1 impli






4. An NTP mode in which an NTP host adjusts its clock in relation to an NTP server's clock.






5. In 802.1X - the computer that stores usernames/passwords and verifies that the correct values were submitted before authenticating the user.






6. Backward Explicit Congestion Notification.






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






8. The rate at which a policer limits the bits exiting or entering the policer.






9. A Frame Relay traffic shaping feature during which the shaping rate is reduced when the shaper notices congestion through the receipt of BECN or ForeSight messages.






10. A state for a route in an EIGRP topology table that indicates that the router is actively sending Query messages for this route - attempting to validate and learn the current best route to that subnet.






11. 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.






12. One of the two modes of MDRR - in which the priority queue is serviced between each servicing of the non-priority queues.






13. Auto-Rendezvous Point. Cisco-proprietary protocol that can be used to designate an RP and send RP-Announce messages that advertise its IP address and groups. Also - it can be used to designate a mapping agent that interprets what IP address RP is adv






14. The low-order 4 bits of the configuration register. These bits direct a router to load either ROMMON software (boot field 0x0) - RXBOOT software (boot field 0x1) - or a full-function IOS image.






15. Router-Port Group Management Protocol.






16. Inside telcos' original TDM hierarchy - the smallest unit of transmission at 64 kbps.






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






18. Cisco Group Management Protocol.






19. Wired Equivalent Privacy.






20. Source-specific multicast.






21. On a serial cable - the pin lead set by the DTE to imply that the DTE is ready to signal using pin leads.






22. A mechanism that counters collisions caused by hidden nodes. If enabled - the station or access point must first send an RTS frame and receive a CTS frame before sending each data frame.






23. Multicast addresses that are not assigned by IANA.






24. With EIGRP - the metric value for the lowest-metric route to a particular subnet.






25. A type of AS_PATH segment consisting of an ordered list of ASNs through which the route has been advertised.






26. Distance Vector Multicast Routing Protocol.






27. A method for optimizing the flow of multicast IP packets passing through a LAN switch. The switch using IGMP snooping examines IGMP messages to determine which ports need to receive traffic for each multicast group.






28. Part of the Cisco IOS Firewall feature set - CBAC inspects traffic using information in the higher-layer protocols being carried to decide whether to open the firewall to specific inbound traffic. CBAC supports both UDP and TCP and multiple higher-la






29. A 3-bit field in an ISL header used for marking frames. Also - used generically to refer to either the ISL CoS field or the 802.1Q User Priority field.






30. Bipolar Violation.






31. Weighted random early detection.






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






33. A Cisco-proprietary protocol used to dynamically negotiate whether the devices on an Ethernet segment want to form a trunk and - if so - which type (ISL or 802.1Q).






34. Sent by a PIM router - by default every 30 seconds - on every interface on which PIM is configured to discover neighbors - establish adjacency - and maintain adjacency.






35. With RIP - a per-route timer (default 180 seconds) that begins when a route's metric changes to a larger value.






36. Defined in RFC 1631 - a method of translating IP addresses in headers with the goal of allowing multiple hosts to share single public IP addresses - thereby reducing IPv4 public address depletion.






37. Loss of Signal. A T1 alarm state that occurs when the receiver has not received any pulses of either polarity for a defined time period.






38. In TCP - a TCP host sets the TCP header's Window field to the number of bytes it allows the other host to send before requiring an acknowledgement. In effect - the receiving host - by stating a particular window size - grants the sending host the rig

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39. Another name for 802.1Q-in-Q. See 802.1Q-in-Q.






40. An OSPF external route for which internal OSPF cost is not added to the cost of the route as it was redistributed into OSPF.






41. One-time password.






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






43. A message sent by a router - after receiving a Leave message from a host - to determine whether there are still any active members of the group. The router uses the group address as the destination address.






44. A Cisco IOS queuing tool that uses MQC configuration commands - reserves a minimum bandwidth for some queues - provides high-priority scheduling for some queues - and polices those queues to prevent starvation of lower-priority queues during interfac






45. Operates in dense mode and depends on its own unicast routing protocol that is similar to RIP to perform its multicast functions.






46. A Cisco switch feature that permits limiting traffic arriving at switch ports by percentage or absolute bandwidth. Separate thresholds are available per port for unicast - multicast - and broadcast traffic.






47. Reliable Transport Protocol.






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






49. EAP over LAN.






50. The process of installing a multicast application; also referred to as launching an application.







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