300-420 Question 170
Single answerA financial institution is designing a high-speed, long-distance network to connect its data centers in different cities. The institution requires a solution that supports high data transmission rates, scalability for future bandwidth needs, and the ability to multiplex multiple types of traffic over a single fiber link. Which technology would best meet these requirements?
- A
Dense Wavelength Division Multiplexing (DWDM)
- B
Multiprotocol Label Switching (MPLS)
- C
Asynchronous Transfer Mode (ATM)
- D
Synchronous Optical Networking (SONET)
Show answer and explanation
Correct answer: A
Explanation
DWDM is specifically designed for high-speed, long-distance optical communication by enabling the multiplexing of multiple wavelengths (channels) over a single fiber link. It provides the scalability and flexibility needed for modern enterprise networks, making it the best choice for the financial institution's requirements.
- A. Correct.
DWDM is the correct choice as it allows multiple data streams of different wavelengths to be transmitted simultaneously over a single fiber link. It is ideal for high-speed, long-distance connections and supports scalability for future bandwidth needs.
- B. Incorrect.
MPLS is a network protocol that focuses on efficient data routing but does not inherently support high-speed, long-distance transmission or multiplexing of different traffic types over a single fiber.
- C. Incorrect.
ATM is an older technology designed for the transport of voice, video, and data but lacks the high-speed, high-bandwidth capabilities and scalability of DWDM.
- D. Incorrect.
SONET is a transport protocol for optical networks, but it is less scalable and less efficient at multiplexing multiple traffic types compared to DWDM.