Digital signatures are used for which of the following?
A) To encrypt a message
B) To ensure message confidentiality
C) To prove the identity of the sender of the message
D) To ensure the message cannot be opened by anyone but the sender
C) To prove the identity of the sender of the message
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Answer the following statements true (T) or false (F)
1. When you create an object from a class, you use a reference variable to reference that object. 2. You should never declare a class in its own source file. 3. Because classes are reference types, objects that are instances of a class are always passed by reference. 4. Writing each class in its own separate file makes your code more organized and helps keep your source code files to a manageable size.
What is the best way to secure FTP or TFTP?
A. Install FTP on the client and TFTP on the server. B. Install FTP on the server and TFTP on the client. C. Use anonymous FTP. D. Employ encryption and authentication.