Which network method securely connects two sites across a public network?

The correct answer is A. VPN. A VPN (Virtual Private Network) creates an encrypted tunnel over a public network (like the internet), allowing two sites to communicate securely as if they were on the same private network - making it the standard solution for secure site-to-site connectivity. Why the others…

Network Security Fundamentals

Question

Which network method securely connects two sites across a public network?

Options

AVPN
BVLAN
Cswitch
Drouter

How the community answered

(59 responses)

A
90% (53)
B
2% (1)
C
3% (2)
D
5% (3)

Explanation

A VPN (Virtual Private Network) creates an encrypted tunnel over a public network (like the internet), allowing two sites to communicate securely as if they were on the same private network - making it the standard solution for secure site-to-site connectivity.

Why the others are wrong:

VLAN segments traffic within a single physical network; it doesn't span across public infrastructure.
A switch operates at Layer 2 to connect devices within a LAN - it has no routing or encryption capability across sites.
A router forwards traffic between networks but provides no built-in encryption or secure tunneling on its own.

Memory tip: Think "VPN = Virtual Private Network" - the word private is the key. If you need privacy over a public network, VPN is your answer.

Topics

#VPN#Site-to-site#Secure tunneling#Public networks

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