Questions

Public Key Infrastructure (PKI) typically uses the RSA algorithm for key exchange and digital signatures. Among the options provided:

A. RSA 1024 bit strength B. AES 1024 bit strength C. RSA 512 bit strength D. AES 512 bit strength

The most relevant level of algorithm historically used by PKI is:

A. RSA 1024 bit strength

However, it is important to note that RSA 1024 bit strength is now considered to be less secure by modern standards. Currently, RSA keys with 2048 bits or higher are generally recommended for better security. AES is used in symmetric key encryption rather than for the key exchange and digital signature functions typically associated with PKI.

So, while "A. RSA 1024 bit strength" is the best answer given the options, modern best practices would recommend using RSA 2048 bit strength or higher.