February 2008: These tests are all badly in need of update.
Some questions are incorrect because of changing technology and others just make no sense in today's IT world.
I do intend to update these, but it's a big project..

Linux Skills Test

Copyright 2002,2003 A.P. Lawrence

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Medium Difficulty

John needs to send a message to Mary. Both John and Mary use "gpg". Mary has to be sure the message is from John. John should:

• Encrypt the file with his public key
• Encrypt the file with his private key
• Encrypt the file with Mary's public key
• Encrypt the file with Mary's private key

Answer