CCIE Vocab
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CCIE Vocab
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25 Questions

1. 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.

2. The router that will receive the group traffic when a multicast router forwards group traffic to another router.

3. An IPv6/IPv4 tunneling method that allows isolated IPv6 domains to be connected over an IPv4 network.

4. An Internet standard authentication protocol that uses clear-text passwords and a two-way handshake to perform authentication over a PPP link.

5. Sent by a PIM router - by default every 30 seconds - on every interface on which PIM is configured to discover neighbors - establish adjacency - and maintain adjacency.

6. A single address in each subnet for which packets sent to this address will be broadcast to all hosts in the subnet. It is the highest numeric value in the range of IP addresses implied by a subnet number and prefix/mask.

7. A method for how a TCP sender grows its calculated CWND variable - thereby growing the allowed window for the connection. Slow Start grows CWND at an exponential rate.

8. Virtual circuit.

9. An interface on a Cisco IOS-based switch that is treated as if it were an interface on a switch.

10. Loss of Frame.

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

12. 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

13. Multicast Listener Discovery.

14. A tunneling protocol that can be used to encapsulate many different protocol types - including IPv4 - IPv6 - IPsec - and others - to transport them across a network.

15. An 802.1d STP transitory port state in which the port does not send or receive frames - and does not learn MAC addresses - but does wait for STP convergence and for CAM flushing by the switches in the network.

16. A Cisco-proprietary LMI protocol - implemented in Cisco WAN switches and routers - through which the switch can inform the router about parameters for each VC - including CIR - Bc - and Be.

17. Dynamic ARP Inspection.

18. A network/subnet to which only one OSPF router is connected.

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

20. The process of changing the electrical characteristics on a transmission medium - based on defined rules - to represent data.

21. The term to describe a router that is neither the DR nor the BDR on a subnet that elects a DR and BDR.

22. A reserved value for the BGP COMMUNITY path attribute that implies that the route should not be advertised outside the local AS.

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

24. A well-known discretionary BGP path attribute that flags a route as being a summary route.

25. Gateway Load Balancing Protocol.