Which is a benefit of using VLANs and IP subnets?

Which is a benefit of using VLANs and IP subnets?
A . An encrypted communication link is established over the internet, allowing surveillance video to be securely viewed off-site
B . The network provides end-to-end encryption to prevent malicious users from intercepting network traffic
C . The network will only allow access from authorized devices, eliminating the risk that malicious users disconnect cameras to intercept network traffic
D . Network surveillance video can be kept separate from other network traffic, reducing the risk that malicious users will intercept it

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Answer: D