Which of the following should the company deploy to ensure excellent TV and telephone service?

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A national cable company providing TV, telephone, and Internet service to home users over its IP network, has been tracking a large increase of network bandwidth due to P2P file sharing.

Which of the following should the company deploy to ensure excellent TV and telephone service?
A . QoS
B . Load balancing
C . High availability
D . Fiber optics

Answer: A