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300-420 · Question #317

300-420 Question #317: Real Exam Question with Answer & Explanation

The correct answer is A: single-homed. For two small branch offices seeking a cost-effective design with minimal routing overhead and acceptable downtime, a single-homed connectivity solution is the most suitable choice.

WAN for Enterprise Networks

Question

An architect is designing a connectivity solution for a customer's two small branch offices. The customer wants a cost-effective design, no routing overhead, and some down time during the year is acceptable. Which connectivity solution must the architect choose?

Options

  • Asingle-homed
  • Bdual multihomed
  • Csingle multihomed
  • Ddual-homed

Explanation

For two small branch offices seeking a cost-effective design with minimal routing overhead and acceptable downtime, a single-homed connectivity solution is the most suitable choice.

Common mistakes.

  • B. Dual multihomed designs involve multiple connections to multiple service providers, offering high redundancy and increased complexity, which is neither cost-effective nor low on routing overhead.
  • C. Single multihomed refers to multiple connections to a single service provider, which offers some redundancy but increases cost and complexity compared to a single-homed setup, not aligning with the 'most cost-effective' requirement.
  • D. Dual-homed solutions typically involve two connections to one service provider or device, providing more redundancy but also incurring higher costs and more routing considerations than a single-homed design.

Concept tested. Branch office connectivity design types

Reference. https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/qos/QoS_SRND_40/QoSWAN.html

Topics

#WAN connectivity#Branch office design#Network design principles#Redundancy levels

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