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Tag: 350-020

CCIE Service Provider Optical written

how long does spanning tree protocol interrupt connectivity before it converges?

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As shown in the diagram, a building in your campus network has two layer 3 switches in the distribution layer and four layer 2 switches in the wiring closets. The layer 3 switches are labeled R1 and R2. The layer 2 switches are labeled A1, A2, A3, and A4. Access switch A1 is configured as the root switch of VLAN 1. Each access switch has a single subnet and the uplinks are configured as access ports, not VLAN trunks. If the uplink labeled X is cut, how long does spanning tree protocol interrupt connectivity before it converges?

What is the destination MAC address of the packet on Host’s 1 Ethernet?

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Host 1 and Host 2 are on Ethernet LANs in different buildings. A serial line is installed between two Cisco routers using Cisco HDLC serial line encapsulation. Routers A and B are configured to route IP traffic. Host 1 sends a packet to Host 2. What is the destination MAC address of the packet on Host’s 1 Ethernet?


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