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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. As defined in RFCs 2765 and 2766 - a method of translating between IPv4 and IPv6 that removes the need for hosts to run dual protocol stacks. NAT-PT is an alternative to tunneling IPv6 over an IPv4 network - or vice versa.






2. A time value that each wireless station must set based on the duration value found in every 802.11 frame. The time value counts down and must be equal to zero before a station is allowed to access the wireless medium. The result is a collision-avoida






3. An 802.11 frame that access points or stations in ad hoc networks send periodically so that wireless stations can discover the presence of a wireless LAN and coordinate use of certain protocols - such as power-save mode.






4. A small FIFO queue associated with each router's physical interface - for the purpose of making packets available to the interface hardware - removing the need for a CPU interrupt to start sending the next packet out the interface.






5. A type of OSPF packet used to discover neighbors - check for parameter agreement - and monitor the health of another router.






6. 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.






7. A name used for DS1 lines inside the European TDM hierarchy.






8. A term used with WFQ for the number assigned to a packet as it is enqueued into a WFQ queue. WFQ schedules the currently lowest FT packet next.






9. Link-State Acknowledgment.






10. The portion of PPP focused on features that are unrelated to any specific Layer 3 protocol.






11. With routing protocols - the process by which the router receiving a routing update determines if the routing update came from a trusted router.






12. The speed at which the access link is clocked. This choice affects the price of the connection and many aspects of traffic shaping and policing - compression - quality of service - and other configuration options.






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






14. Management Information Base.






15. The multicast addresses assigned by IANA.






16. The original MPLS protocol used to advertise the binding (mapping) information about each particular IP prefix and associated label. It is slightly different from LDP - but functionally equivalent. See also LDP.






17. Policing in which a single rate is metered - and packets are placed into one of two categories (conform or exceed).






18. Also known as triggered updates.






19. With EIGRP - the timer used to determine when a neighboring router has failed - based on a router not receiving any EIGRP messages - including Hellos - in this timer period.






20. Internal BGP.






21. A Cisco-proprietary STP implementation - created many years before IEEE 802.1s and 802.1w - that speeds convergence and allows for one STP instance for each VLAN.






22. Class-Based Weighted Fair Queuing.






23. Class of Service.






24. Digital Signal Level 3.






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






26. A protocol used for reliable multicast and unicast transmissions. Used by EIGRP.






27. 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.






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






29. An MPLS term referring to the MPLS label just before the IP header. Also called the VPN label when implementing MPLS VPNs.






30. 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.






31. Cisco-proprietary STP feature in which a switch port monitors for STP BPDUs of any kind - err-disabling the port upon receipt of any BPDU.






32. Source-specific multicast.






33. An administrative setting - included in Hellos - that is the first criteria for electing a DR. The highest priority wins - with values from 1-255 - with priority 0 meaning a router cannot become DR or BDR.






34. The definitions for a particular set of data variables - with those definitions following the SMI specifications. See also SMI.






35. A queuing scheduler concept - much like CQ's scheduler - in which queues are given some service in sequence. This term is often used with queuing in Cisco LAN switches.






36. A component of the IOS IP SLA feature. An IP SLA responder is a router configured to respond to a particular IP SLA message initiated by another router - allowing the routers to work together to provide performance information including UDP jitter an






37. A term used with Cisco LAN switches - referring to a DSCP value used when making QoS decisions about a frame. This value may not be the actual DSCP value in the IP header encapsulated inside the frame.






38. A local Cisco-proprietary BGP setting that is not advertised to any peers. A larger value is considered to be better.






39. With RIP - the regular interval at which updates are sent. Each interface uses an independent timer - defaulting to 30 seconds.






40. When subnetting a class A - B - or C address - the subnet for which all subnet bits are binary 1.






41. The combination of PVST+ and Rapid Spanning Tree. It provides subsecond convergence time and is compatible with PVST+ and MSTP.






42. A wireless LAN that only includes wireless users and no access points. 802.11 data frames in an ad hoc network travel directly between wireless users.






43. Data Carrier Detect.






44. 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.






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






46. 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






47. Removing unwanted VLANs from a Layer 2 path.






48. Dynamic Multipoint VPN.






49. In an IOS confederation configuration - the actual ASN as seen by eBGP peers.






50. Weighted fair queuing.