Which layer of the TCP/IP protocol stack corresponds to the ISO/OSI Network layer (layer 3)?

Which of the following protocols operates at the session layer (layer 5)?

Which of the following protocols does not operate at the data link layer (layer 2)?

In order to ensure the privacy and integrity of the data, connections between firewalls over public networks
should use:

Which of the following is NOT a characteristic or shortcoming of packet filtering gateways?

Which of the following statements pertaining to IPSec NOT true?

Why does fiber optic communication technology have significant security advantage over other transmission
technology?

Secure Electronic Transaction (SET) and Secure HTTP (S-HTTP) operate at which layer of the OSI model?

Which of the following protocols is designed to send individual messages securely?

Which of the following best describes the Secure Electronic Transaction (SET) protocol?