A TCP/IP-based environment is exposed to the Internet. Which
of the following BEST ensures that complete encryption and
authentication protocols exist for protecting information
while transmitted?
A. Work is completed in tunnel mode with IP security using
the nested services of authentication header (AH) and
encapsulating security payload (ESP).
B. A digital signature with RSA has been implemented.
C. Digital certificates with RSA are being used.
D. Work is being completed in.TCP services.
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Answer: A
Tunnel mode with IP security provides encryption and
authentication of the complete IP package. To accomplish
this, the AH (authentication header) and ESP (encapsulating
security payload) services can be nested? Choices B and C
provide authentication and integrity. TCP services do not
provide encryption and authentication.
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