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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. 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.






2. Management Information Base.






3. A route that is used for forwarding packets when the packet does not match any more specific routes in the IP routing table.






4. Virtual LAN.






5. The multicast IP address 224.0.0.6 - listened for by DR and BDR routers.






6. A logical concept that represents the path over which frames travel between DTEs. VCs are particularly useful when comparing Frame Relay to leased physical circuits.






7. Data terminal equipment.






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






9. Reported distance or Route Distinguisher.






10. A dotted-decimal number that represents a subnet. It is the lowest numeric value in the range of IP addresses implied by a subnet number and prefix/mask.






11. The process of taking the payload inside a Layer 2 frame - including the headers of Layer 3 and above - compressing the data - and then uncompressing the data on the receiving router.






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






13. Burst With shaping and policing - the number of additional bits that may be sent after a period of relative inactivity.






14. A BGP feature that overcomes the requirement of a full mesh of iBGP peers inside a single AS by separating the AS into multiple sub-autonomous systems.






15. An optional contention-free 802.11 access protocol that requires the access point to poll wireless stations before they are able to send frames. Not commonly implemented.






16. Cisco IOS IP Service Level Agent feature. Provides for router-generated information useful for verifying network performance on a scheduled basis - and the associated reporting functions.






17. 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






18. An early T1 framing standard.






19. PIM-DM is a method of routing multicast packets that depends on a flood-and-prune approach. PIM Dense Mode gets its name from the assumption that there are many receivers of a particular multicast group - close together (from a network perspective).






20. The password required by the enable command. Also - this term may specifically refer to the password defined by the enable password command.






21. Exterior Gateway Protocol.






22. A characterization of a BGP path attribute in which all BGP implementations must support and understand the attribute (well known) - and all BGP Updates must include the attribute (mandatory).






23. A set of all devices for which any frame sent by one of the devices would collide with any frames transmitted at the same time by any of the other devices in the set.






24. A TCP variable that defines the largest number of bytes allowed in a TCP segment's Data field. The calculation does not include the TCP header. With a typical IP MTU of 1500 bytes - the resulting default MSS would be 1460. TCP hosts must support an M






25. A Cisco-proprietary feature. After a Cisco multicast router receives IGMP Join or Leave messages from hosts - it communicates to the connected Cisco switches - telling them which hosts (based on their unicast MAC addresses) have joined or left each m






26. The process of sending an infinite-metric route in routing updates when that route fails.






27. In the context of SNMP - the Get command is sent by an SNMP manager - to an agent - requesting the value of a single MIB variable identified in the request. The Get request identifies the exact variable whose value the manager wants to retrieve. Intr






28. In PIM-SM - the path of the group traffic that flows from the RP to the routers that need the traffic. It is also called the root-path tree (RPT) - because it is rooted at the RP.






29. A technology that sends a high-speed data stream over multiple subcarriers simultaneously. It is highly immune to multipath interference. 802.11a and 802.11g specify the use of OFDM.






30. An MQC-based feature of IOS that is used to classify and mark packets for QoS purposes.






31. A neighbor state that signifies the other router has reached neighbor status - having passed the parameter check.






32. Cisco-proprietary VLAN trunking protocol.






33. 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.






34. A multicast routing protocol whose default action is to flood multicast packets throughout a network.






35. A method of Link Fragmentation and Interleaving (LFI) over interfaces that natively use Frame Relay encapsulation. The routers first build MLP-style PPP headers - which are then encapsulated inside a Frame Relay header. The PPP headers are then used






36. 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






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






38. Enhances RP redundancy by providing a method for RPs to exchange multicast source information - even between multicast domains.






39. Dynamic Multipoint VPN.






40. 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.






41. A Cisco IOS queuing tool most notable for its reservation of a minimum bandwidth for each queue.






42. Network Based Application Recognition.






43. A name used for DS3 lines inside the North American TDM hierarchy.






44. An FRF standard for payload compression.






45. Orthogonal frequency division multiplexing.






46. Network Address Translation-Protocol Translation.






47. Challenge Handshake Authentication Protocol.






48. Ethernet MAC address that represents all devices on the LAN.






49. An alternative software loaded into a Cisco router - used for low-level debugging and for password recovery.






50. A strategy for subnetting a classful network for which all masks/prefixes are the same value for all subnets of that one classful network.