CCDE: Cisco Certified Design Expert (Practical) — Question 44

Which two advantages of using DWDM over traditional optical networks are true? (Choose two.)

Answer options

• A. inherent topology flexibility with a service protection provided through a direct integration with an upper layer protocol
• B. inherent topology flexibility with built-in service protection
• C. ability to expand bandwidth over existing optical infrastructure
• D. inherent topology flexibility with intelligent chromatic dispersion
• E. inherent topology flexibility and service protection provided without penalty through intelligent oversubscription of bandwidth reservation

Correct answer: B, C

Explanation

Option B is correct because DWDM does provide inherent topology flexibility along with built-in service protection. Option C is also correct as DWDM allows for bandwidth expansion over existing optical systems. The other options either incorporate incorrect concepts or do not accurately reflect the advantages of DWDM technology.