Question

which security mechanism is followed by ISA 100.11A
a. 3-DES
b. DES-56 encryption
c. AES-256 encryption
d. AES-128 encryption​

Answer 1

Answer:

AES-128

Explanation:

ISA-100.11a, the confidentiality is established through the use of state-of-the-art encryption based on AES-128, along with different keys in the data link layer (hop-to-hop security) and in the transport layer (end-to-end security). These keys have an expiration time and can be updated.