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Category: 350-020

Exam 350-020: CCIE SP Optical Qualification

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

Click the Exhibit button to view the topology.

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?

Click the Exhibit button to view the topology.

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?

Which features are being introduced to allow use of discontiguous timeslots and BLSR protect channels when pro

When an ML-series RPR ring is provisioned over a SONET BLSR (or SDH MS-SPR) ring, the ML
architecture can no longer utilize the full available bandwidth on the SONET/SDH ring due to the
constraints of BLSR. Which features are being introduced to allow use of discontiguous timeslots
and BLSR protect channels when provisioning ML-series RPR rings, in order to alleviate this
limitation?


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