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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. Link-state advertisement.






2. A standard (RFC 951) protocol by which a LAN-attached host can dynamically broadcast a request for a server to assign it an IP address - along with other configuration settings - including a subnet mask and default gateway IP address.






3. 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.






4. An early T1 framing standard.






5. Enhanced Local Management Interface.






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






7. Retransmission Timeout.






8. 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.






9. Aka Rapid Per-VLAN Spanning Tree Plus.






10. Time to Live.






11. An NTP mode in which two or more NTP servers mutually synchronize their clocks.






12. Customer edge.






13. 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).






14. A Cisco IOS queuing tool most notable for its automatic classification of packets into separate per-flow queues.






15. Designated router.






16. A Cisco router feature in which the router works to prevent SYN attacks either by monitoring TCP connections flowing through the router - or by actively terminating TCP connection until the TCP connection is established and then knitting the client-s






17. Multiple Spanning Trees.






18. 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.






19. The most significant bit in the most significant byte of an Ethernet MAC address - its value implies that the address is a unicast MAC address (binary 0) or not (binary 1).






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






21. 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.






22. A term referring generically to a server that performs many AAA functions. It also refers to the software product Cisco Secure Access Control Server.






23. The IEEE standardized protocol for VLAN trunking.






24. An EIGRP message that is used by neighbors to reply to a query. Reply messages require an Ack.






25. Sequence number.






26. A mechanism in which VLAN information can extend over another set of 802.1Q trunks by tunneling the original 802.1Q traffic with another 802.1Q tag. It allows a service provider to support transparent VLAN services with multiple customers - even if t






27. With EIGRP - the route to each destination for which the metric is the lowest of all known routes to that network.






28. Inside telcos' original TDM hierarchy - a unit that combines multiple DS1s into a single channel






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






30. When subnetting a class A - B - or C address - the subnet for which all subnet bits are binary 0.






31. A numeric value between 0 and 32 (inclusive) that defines the number of beginning bits in an IP address for which all IP addresses in the same group have the same value. Alternative: The number of binary 1s beginning a subnet mask - written as a deci






32. Class-Based Weighted Fair Queuing.






33. Reliable Transport Protocol.






34. In the context of SNMP - the Trap command is sent by an SNMP agent - to a manager - when the agent wants to send unsolicited information to the manager. Trap is not followed by a Response message from the receiving SNMP manager.






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






36. Enables a wireless client to securely roam between access points in the same subnet or between subnets with access point handoff times within 50 ms.






37. Bootstrap Router.






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






39. Permanent virtual circuit.






40. External BGP.






41. A basic form of traffic shaping that is applied to an interface or subinterface. By default - it shapes all traffic leaving the interface - but can be modified by using an access control list. The access list controls only what traffic is shaped; GTS






42. Quantum value.






43. The first 6 bits of the DS field - used for QoS marking.






44. Temporal Key Integrity Protocol.






45. A BGP path attribute that allows routers in one AS to set a value and advertise it into a neighboring AS - impacting the decision process in that neighboring AS. A smaller value is considered better. Also called the BGP metric.






46. Cisco IOS Embedded Event Manager - a feature that monitors events on a router and reports their results. Principally intended to increase availability - EEM provides flexible - granular detection and alerting functions.






47. The range 239.0.0.0 through 239.255.255.255 that IANA has assigned for use in private multicast domains.






48. Network Layer Protocol ID is a field in the RFC 2427 header that is used as a Protocol Type field in order to identify the type of Layer 3 packet encapsulated inside a Frame Relay frame.






49. With DiffServ - a DSCP marking and a related set of QoS actions applied to packets that have that marking.






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