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300-420 Exam Dumps : Designing Cisco Enterprise Networks (ENSLD)

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Designing Cisco Enterprise Networks (ENSLD) Questions and Answers

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Question 1

Refer to the exhibit.

The failover time of ISP-2 is significantly shorter than ISP-1 when an interface on the ISP router toward the campus network fails. Which solution minimizes the downtime to the sub-second?

Options:

A.

Aggressive timers

B.

Next-hop address tracking

C.

Graceful-restart

D.

BFD

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Question 2

A customer requires QoS to support multimedia conferencing over MPLS. The network architect chooses to use per-hop behavior. Which solution must the architect use to classify and mark traffic traveling between branch sites?

Options:

A.

BW Queue and DSCP WRED with DSCP AF3

B.

BW Queue with DSCP AF3

C.

BW Queue and DSCP WRED with DSCP AF4

D.

BW Queue with DSCP AF4

Question 3

An engineer is designing a network for a customer running a wireless network with a common VLAN for all APs. The customer is experiencing unicast flooding in the Layer 2 network between the aggregation and access layers. The customer wants to reduce the flooding and improve convergence time. Which solution meets these requirements?

Options:

A.

Migrate all APs to a common Layer 2 access layer switch and run Layer 3 from the aggregation layer to all remaining access layer switches.

B.

Align HSRP primary and STP root bridges and reduce ARP timers to match CAM timers on the aggregation layer switches.

C.

Migrate to a Layer 3 access campus design if the APs can run on separate VLANs.

D.

Align HSRP primary and STP root bridges if the APs cannot run on separate VLANs.

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