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What is one benefit of a software-defined networking (SDN) solution for a WAN?
A. SDN applications can automatically deploy key services on branch zl or MSR modules in case of a failed WAN connection.
B. SDN applications provide a remote connection to servers so that remote IT staff can identify and resolve issues.
C. SDN applications provide a graphical interface for scripting CLI commands for multiple branches at once.
D. SDN applications can adjust WAN bandwidth provisioning granularly, dynamically, and intelligently.
Correct Answer: D
Explanation/Reference:
Explanation: Software-defined networking (SDN) is an architecture purporting to be dynamic, manageable, cost-effective, and adaptable, seeking to be suitable for the high-bandwidth, dynamic nature of today’s applications.
The SDN architecture is:
Directly programmable: Network control is directly programmable because it is decoupled from forwarding functions.
Agile: Abstracting control from forwarding lets administrators dynamically adjust network-wide traffic flow to meet changing needs.
Reference: Wikipedia, Software-defined networking
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