Which of the following is the best means of transferring information when parties do not have a shared secret and large quantities of sensitive information must be passed?

Of the following, which should be used as a replacement for Telnet for secure remote login over an insecure network?

Which of the following are the best two countermeasures to use against a replay attack?

A linear cryptanalysis attack is considered what type of attack?

There are several different types of attacks that can take place on a cryptosystem. Which of the following best describes a differential cryptanalysis?

Why does cross certification exist in public key infrastructures?

What is the purpose of a digital certificate and a certificate authority?

A birthday attack is somewhat complicated and would require an attacker to be dedicated to be successful. What is the usual goal of this type of attack?

Which of the following is the improper mapping?

Which of the following best describes the difference between MAC, HMAC, and CBC-MAC?