What IEEE standard describes port switching which is also known as port-based Network Access Control (PNAC)?
  1. 802.1x
  2. NAT
  3. VPN
  4. 802.11g
Explanation
Answer: A - 802.1x describes port based network access control

Key Takeaway: PNAC is described by the IEEE 802.1x standard. The concept behind this scheme is that an authenticator using RADIUS will not allow a client, or supplicant, access to the network without being authenticated. This authentication system is similar to going across a national border wherein the security agent will not let you cross until you produce a valid passport.
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