CompTIA Tech+ (FC0-U71)InfrastructureHard
An employee working remotely needs to securely access internal company resources over the public internet as if directly connected to the corporate LAN, with all traffic encrypted in transit. Which technology should the employee use?
- ANAT
- BVPN
- CDNS
- DDHCP
Show answer & explanationAnswer & explanation
Correct answer: B. VPN
A VPN (Virtual Private Network) creates an encrypted tunnel over a public network like the internet, allowing remote users to securely access internal resources as though they were on the local network. NAT translates addresses, DNS resolves names, and DHCP assigns addresses—none provide encrypted remote access.
Why the other options are wrong
- A. NAT translates private to public IP addresses but provides no encryption or remote tunneling.
- C. DNS translates domain names to IP addresses and has no role in secure remote connectivity.
- D. DHCP assigns IP addresses automatically but does not provide encryption or remote network access.
VPN (Virtual Private Network)
A technology that creates an encrypted tunnel over a public network, allowing secure remote access to a private network's resources.
- Encrypts data in transit to protect against interception
- Makes remote devices appear as if locally connected to the network
- Commonly used by remote employees and for accessing geo-restricted content
Memory trick: VPN = 'Very Private Network' tunnel through the public internet.