Test your basic knowledge |

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. Penultimate hop popping.






2. Sending a message from a single source or multiple sources to selected multiple destinations across a Layer 3 network in one data stream.






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






4. Rendezvous point.






5. A conceptual model used by shapers and policers to represent their internal logic.






6. Removing unwanted VLANs from a Layer 2 path.






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






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






9. Link-State Update.






10. Single-bit fields in the TCP header. For example - the TCP SYN and ACK code bits are used during connection establishment.






11. A packet-scheduling algorithm used in Cisco switches that provides similar behavior to CBWFQ in shared mode and polices in shaped mode.






12. An EIGRP message that informs neighbors about routing information. Update messages require an Ack.






13. A process on a computing device that issues requests for SNMP MIB variables from SNMP agents - receives and processes the MIB data - and accepts unsolicited Trap messages from SNMP agents.






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






15. Layer x PDU.






16. A characterization of a network attack in which packets flow to the attacker - and then out to the true recipient. As a result - the user continues to send data - increasing the chance that the attacker learns more and better information.






17. 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






18. 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.






19. 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.






20. A method of providing dynamically configured spoke-to-spoke VPN connectivity in a hub-and-spoke network that significantly reduces configuration required on the spoke routers compared to traditional IPsec VPN environments.






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






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






23. The structure inside telcos' original digital circuit build-out in the mid-1900s - based upon using TDM to combine and disperse smaller DS levels into larger levels - and vice versa.






24. Link Access Procedure for Frame-Mode Bearer Services.






25. Gateway Load Balancing Protocol.






26. Data Terminal Ready.






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






28. An attack similar to a smurf attack - but using packets for the UDP Echo application instead of ICMP.






29. A Cisco-proprietary feature by which multiple routers can provide interface IP address redundancy - as well as cause a set of clients to load-balance their traffic across multiple routers inside the GLBP group.






30. A Cisco-proprietary messaging protocol used to negotiate the dynamic creation of PortChannels (EtherChannels) and to choose which ports can be placed into an EtherChannel.






31. Variable-length subnet masking.






32. Multicast addresses that are not assigned by IANA.






33. 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






34. The condition in which a route has been in an EIGRP active state for longer than the router's Active timer.






35. 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






36. Rapid Spanning Tree Protocol.






37. A route that is created to represent one or more smaller component routes - typically in an effort to reduce the size of routing and topology tables.






38. A network/subnet over which two or more OSPF routers have become neighbors - thereby being able to forward packets from one router to another across that network.






39. Superframe






40. A switch feature with which the switch watches ARP messages - determines if those messages may or may not be part of some attack - and filters those that look suspicious.






41. A BGP path attribute that lists ASNs through which the route has been advertised. The AS_PATH includes four types of segments: AS_SEQ - AS_SET - AS_CONFED_SEQ - and AS_CONFED_SET. Often - this term is used synonymously with AS_SEQ






42. WRED compares this setting to the average queue depth to decide whether packets should be discarded. No packets are discarded if the average queue depth falls below this minimum threshold.






43. A message sent by the multicast router - by default every 60 seconds - on each of its LAN interfaces to determine whether any host wants to receive multicast traffic for any group.






44. A DiffServ PHB - based on DSCP EF (decimal 46) - that provides low-latency queuing behavior as well as policing protection to prevent EF traffic from starving queues for other types of traffic.






45. 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






46. A routing protocol feature for which the routing protocol sends routing updates immediately upon hearing about a changed route - even though it may normally only send updates on a regular update interval.






47. The process of forwarding packets through a router. Also call IP routing.






48. In shaping and policing - the definition of parameters that together imply the allowed rate and bursts.






49. Cisco Group Management Protocol.






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