Refer to the table. A customer investigates connectivity options for a DCI between two production data centers to aid a large- scale migration project. The migration is estimated to take 20 months to complete but might extend an additional 10 months if issues arise. All connectivity options meet the requirements to migrate workloads. Which transport technology provides the best ROI based on cost and flexibility?
Correct Answer: D
Let's calculate the total cost for each solution based on the most likely maximum duration (20 + 10 = 30 months) to ensure conservative, flexible planning. - * DWDM over dark fiber: * CAPEX = $200,000 * OPEX (annual): $100,000#for 30 months = (2.5 × $100,000) = $250,000 * Installation fee = $30,000 * Total = $200,000 + $250,000 + $30,000 = $480,000 * CWDM over dark fiber: * CAPEX = $150,000 * OPEX (annual): $100,000#for 30 months = (2.5 × $100,000) = $250,000 * Installation fee = $25,000 * Total = $150,000 + $250,000 + $25,000 = $425,000 * MPLS wires only: * CAPEX = $50,000 * OPEX (annual): $180,000#for 30 months = (2.5 × $180,000) = $450,000 * Installation fee = $5,000 * Total = $50,000 + $450,000 + $5,000 = $505,000 * Metro Ethernet: * CAPEX = $65,000 * OPEX (annual): $100,000#for 30 months = (2.5 × $100,000) = $250,000 * Installation fee = $5,000 * Total = $65,000 + $250,000 + $5,000 = $320,000 - Analysis: * Metro Ethernet has the lowest overall cost at $320,000 and provides sufficient flexibility for workload migration since "all connectivity options meet technical requirements." * Metro Ethernet is typically more flexible than DWDM/CWDM for temporary or dynamic migration projects because it does not require optical expertise or complex dark fiber management. * MPLS is more expensive here and less flexible for large-scale Layer 2 migrations. * CWDM/DWDM are suitable for permanent solutions where long-term investment is justified, but not optimal here due to cost. Therefore, best ROI and flexibility: Metro Ethernet Final correct answer: D
Question 142
Which parameter is the most important factor to consider when deciding service placement in a cloud solution?
Correct Answer: B
Question 143
Which two descriptions of CWDM are true? (Choose two)
Correct Answer: D,E
Question 144
Refer to the exhibit. As part of a redesign project, you must predict multicast behavior What happens to the multicast traffic received on the shared tree (*,G), if it is received on the LHR interface indicated*?
Correct Answer: C
Question 145
Which two business areas support continuity during emergencies by understanding data flows and business processes? (Choose two)
Correct Answer: C,E
#Explanation: * C: Disaster Recovery focuses on restoring services and data after a catastrophic event. * E: Business Continuity is a broader framework ensuring operations can continue despite disruptions. Both require knowledge of critical data flows and dependencies. Other options: * A & D: Device management is operational-not directly focused on emergency business continuity. * B: BYOD is a policy concern related to access and security, not continuity.
