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. A process used in routers that are encrypting traffic to permit egress QoS actions to be taken on traffic that is being encrypted on that router. QoS pre-classification keeps a copy of each packet to be encrypted in memory long enough to take the app






2. 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.






3. 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






4. A technology that enables frequency reuse. Two variants exist: frequency hopping (FHSS) and direct sequence (DSSS). Both techniques spread the signal power over a relatively wide portion of the frequency spectrum over time - to reduce interference be






5. An enhanced version of T1 framing - as compared with the earlier Superframe (D4) standard.






6. A 16-bit number set with a router config-register command. It is used to set several low-level features related mainly to accessing the router and what the router does when powered on.






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






8. In BGP - a configuration construct in which multiple neighbors' parameters can be configured as a group - thereby reducing the length of the configuration. Additionally - BGP performs routing policy logic against only one set of Updates for the entir






9. The operating mode of shaped round-robin that provides behavior like CBWFQ with bandwidth allocated between different traffic classes by a relative amount rather than absolute percentage of the available bandwidth.






10. With RIP - the advertisement of a poisoned route out an interface - when that route was formerly not advertised out that interface due to split horizon rules.






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






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






13. Static length subnet masking.






14. The process of taking the IP - UDP - and RTP headers of a voice or video packet - compressing them - and then uncompressing them on the receiving router.






15. An EIGRP message that is used to acknowledge reliable EIGRP messages - namely Update - Query - and Reply messages. Acks do not require an Ack.






16. An NTP mode in which an NTP host adjusts its clock in relation to an NTP server's clock.






17. A term referring to the process of applying the Message Digest 5 (MD5) algorithm to a string - resulting in another value. The original string cannot be easily computed even when the hash is known - making this process a strong method for storing pas






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






19. A term referring generically to ways in which a router or switch can determine whether a particular device or user should be allowed access.






20. 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.






21. With EIGRP - a timer started when a reliable (to be acknowledged) message is transmitted. For any neighbor(s) failing to respond in its RTO - the RTP protocol causes retransmission. RTO is calculated based on SRTT.






22. Port Address Translation.






23. On a serial cable - the pin lead set by the DTE to tell the DCE that the DTE wants to send data.






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






25. 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.






26. An optional transitive BGP path attribute that - for a summary route - lists the BGP RID and ASN of the router that created the summary.






27. A standard (RFC 2131) protocol by which a host can dynamically broadcast a request for a server to assign to it an IP address - along with other configuration settings - including a subnet mask and default gateway IP address. DHCP provides a great de






28. A strategy for subnetting a classful network for which masks/prefixes are different for some subnets of that one classful network.






29. The IP address used by hosts as the default gateway in a VRRP configuration. This address is shared by two or more VRRP routers - much as HSRP works.






30. In the PIM-SM design - the process by which a source DR - after it starts to receive the group traffic - encapsulates the multicast packets in the unicast packets and sends them to the RP.






31. A type of AS_PATH segment consisting of an unordered list of ASNs consolidated from component subnets of a summary BGP route.






32. Each 802.11 station periodically sends a probe request frame on each RF channel and monitors probe response frames that all access points within range send back. Stations use the signal strength of the probe response frames to determine which access






33. Smoothed Round-Trip Time.






34. Defined in RFC 826 - a protocol used on LANs so that an IP host can discover the MAC address of another device that is using a particular IP address.






35. A table used by CEF that holds information about adjacent IP hosts to which packets can be forwarded.






36. The operating mode of shaped round-robin that provides a low-latency queue with policing.






37. A term used in this book to refer to a route that is included in a larger summary route.






38. A BGP message that includes withdrawn routes - path attributes - and NLRI.






39. An 802.1d STP port state in which the port sends and receives frames.






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






41. Modular QoS CLI.






42. Committed Burst.






43. A set of four hex digits listed in an IPv6 address. Each quartet is separated by a colon.






44. A router feature used when a router sees an ARP request searching for an IP host's MAC - when the router believes the IP host could not be on that LAN because the host is in another subnet. If the router has a route to reach the subnet where the ARP-






45. With RIP - a per-route timer (default 180 seconds) that begins when a route's metric changes to a larger value.






46. A list of interspersed alphanumeric literals and metacharacters that are used to apply complex matching logic to alphanumeric strings. Often used for matching AS_PATHs in Cisco routers.






47. A conceptual model used by CB Policing when using an excess burst.






48. A BGP router that forwards iBGP-learned routes to other iBGP routers.






49. Border Gateway Protocol.






50. Data-link connection identifier.