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






2. A CBWFQ and LLQ term referring to the bandwidth on an interface that is neither reserved nor allocated via a priority command.






3. 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.






4. 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






5. Operation - Administration - and Maintenance.






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






7. An integer setting for EIGRP and IGRP. Any FS route whose metric is less than this variance multiplier times the successor's metric is added to the routing table - within the restrictions of the maximum-paths command.






8. Time-division multiplexing.






9. WRED compares this setting to the average queue depth to decide whether packets should be discarded. All packets are discarded if the average queue depth rises above this maximum threshold.






10. Controls the distribution of multicast traffic by checking the TTL values configured on the interfaces. It forwards the multicast packet only on those interfaces whose configured TTL value is less than or equal to the TTL value of the multicast packe






11. A table inside a router that holds the path attributes and NLRI known by the BGP implementation on that router.






12. 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.






13. A time value that each wireless station must set based on the duration value found in every 802.11 frame. The time value counts down and must be equal to zero before a station is allowed to access the wireless medium. The result is a collision-avoida






14. Aka network layer reachability information.






15. With private VLANs - a secondary VLAN in which the ports can send and receive frames only with promiscuous ports in the primary VLAN.






16. Removing unwanted VLANs from a Layer 2 path.






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






18. An individual line in an ACL.






19. Class of Service.






20. The original standardized set of generic SNMP MIB variables - defined in RFC 1158.






21. In BGP - a feature in which BGP routes cannot be considered to be a best route to reach an NLRI unless that same prefix exists in the router's IP routing table as learned via some IGP.






22. Low-latency queuing.






23. Secure Copy Protocol - one of the many ways of transferring files to and from Cisco IOS routers and switches.






24. Version 4 of the IP protocol - which is the generally deployed version worldwide (at publication) - and uses 32-bit IP addresses.






25. Cisco IOS router feature by which a route map determines how to forward a packet - typically based on information in the packet other than the destination IP address.






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






27. A type of OSPF stub area for which neither external (type 5) LSAs are introduced - nor type 3 summary LSAs; instead - the ABRs originate and inject default routes into the area. External routes cannot be injected into a totally stubby area.






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






29. A routing protocol feature by which the routing update includes only routes that have changed - rather than include the entire set of routes.






30. 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).






31. Protects against problems caused by unidirectional links between two switches. Watches for loss of received Hello BPDUs - in which case it transitions to a loop-inconsistent state instead of transitioning to a forwarding state.






32. Class Selector.






33. A term referring to the MQC service-policy command - which is used to enable a policy map on an interface.






34. The process of forwarding packets through a router. Also called IP forwarding.






35. 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.






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






37. A type of OSPF packet used to acknowledge LSU packets.






38. Shaped round-robin.






39. For some encoding schemes - consecutive signals must use opposite polarity in an effort to reduce DC current. A BPV occurs when consecutive signals are of the same polarity.






40. 64 bits at the end of an IPv6 global address - used to uniquely identify each host in a subnet.






41. Link-State Update.






42. Refers to how a router views a BGP peer relationship - in which the peer is in the same AS.






43. Committed Burst.






44. 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.






45. A bit in the LAPF Frame Relay header that - when set to 1 - implies that the frame has experienced congestion.






46. 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.






47. An early standard from AT&T for encoding analog voice as a digital signal for transmission over a TDM network. PCM requires 64 kbps - and is the basis for the DS0 speed.






48. A prestandard (at the time of publication) wireless LAN physical layer that offers data rates in the hundreds of megabits per second.






49. The router in a VRRP group that is currently actively forwarding IP packets. Conceptually the same as an HSRP Active router.






50. A Cisco IOS feature that provides reporting information to a NetFlow aggregator based on traffic flows.