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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. The PDU used by a particular layer of a networking model - with x defining the layer.






2. Label Distribution Protocol.






3. Defined in IEEE 802.1w - a specification to enhance the 802.1d standard to improve the speed of STP convergence.






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






5. Jargon used by STP mostly when discussing the root election process; refers to a Hello with a lower bridge ID. Sometimes refers to a Hello with the same bridge ID as another - but with better values for the tiebreakers in the election process.






6. A name used for DS1 lines inside the North American TDM hierarchy.






7. Reverse ARP.






8. The information maintained by a router for each multicast entry in its multicast routing table - such as incoming interface - outgoing interface list - Uptime timer - Expire timer - etc.






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






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






11. A term referring to EIGRP's internal processing logic.






12. Defined in IEEE 802.1s - a specification for multiple STP instances when using 802.1Q trunks






13. An optional transitive BGP path attribute used to store 32-bit decimal values. Used for flexible grouping of routes by assigning the group the same COMMUNITY value. Other routers can apply routing policies based on the COMMUNITY value. Used in a larg






14. Jargon used to refer to the second of two buckets in the dual token bucket model; its size is Be.






15. A 48-bit address that is calculated from a Layer 3 multicast address by using 0x0100.5E as the multicast vendor code (OUI) for the first 24 bits - always binary 0 for the 25th bit - and copying the last 23 bits of the Layer 3 multicast address.






16. Provides dynamic inspection of traffic as it traverses the router. It uses Context-Based Access Control (CBAC) to look deeper into a packet than an access list can. It tracks outbound traffic and dynamically allows in responses to that traffic.






17. Hot Standby Router Protocol.






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






19. The process by which neighboring OSPF routers examine their Hello messages and elect the DR. The decision is based on priority (highest) - or RID (highest) if priority is a tie.






20. 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.






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






22. With EIGRP - a route that is not a successor route - but that meets the feasibility condition; can be used when the successor route fails - without causing loops.






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






24. Used to reserve network resources for a flow as it traverses the network. A device that creates an RSVP reservation guarantees that it can provide the bandwidth - latency - or other resources that are requested by RSVP.






25. Network Address Translation-Protocol Translation.






26. 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.






27. An IPv6 address format used for publicly registered IPv6 addresses.






28. A message sent by each host - either in response to a router Query or on its own - to all multicast groups for which it would like to receive multicast traffic.






29. A message sent by a host when it wants to leave a group - addressed to the All Multicast Routers address 224.0.0.2.






30. A well-known discretionary BGP path attribute that flags a route as being a summary route.






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






32. A switch feature in which the switch examines DHCP messages and - for untrusted ports - filters all messages typically sent by servers and inappropriate messages sent by clients. It also builds a DHCP snooping binding table that is used by DAI and IP






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






34. An early T1 framing standard.






35. A term generally describing characteristics about BGP paths that are advertised in BGP Updates.






36. 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






37. Typically used by protocols that perform flow control (like TCP) - a TCP window is the number of bytes that a sender can send before it must pause and wait for an acknowledgement of some of the yet-unacknowledged data.






38. In the context of SNMP - the GetBulk command is sent by an SNMP manager - to an agent - requesting the values of multiple variables. The GetBulk command allows retrieval of complex structures - like a routing table - with a single command - as well a






39. Another term for summary route.






40. CDP Control Protocol.






41. Reported distance or Route Distinguisher.






42. Mark probability denominator.






43. Defined in RFC 3748 - the protocol used by IEEE 802.1X for exchanging authentication information.






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






45. A message sent by a multicast router - by default every 125 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






46. 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.






47. 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.






48. A set of DiffServ PHBs that defines 12 DSCP values - with four queuing classes and three drop probabilities within each queuing class.






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






50. Designed to solve the problems of multicast duplication and multicast routing loops. For every multicast packet received - a multicast router examines its source IP address - consults its unicast routing table - determines which interface it would us