Which of the following can be used to encrypt email messages?
A. MD5
B. SHA-1
C. SET
D. S/MIME
Answer: D
Explanation: S/MIME is based on RSA and is a standard for encrypting email messages and digital signatures. MD5 and SHA-1 are hashing algorithms, and SET is used to secure e-commerce transactions.
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Answer the following statements true (T) or false (F)
1. A namespace is just a class with all the folderol stripped off.
2. Namespaces can be defined in pieces across several files.
3. A namespace grouping requires a semicolon after the closing curly brace.
4. The output from the following code is
```
“function”.
(The code will compile and run.)
#include<<;iostream<
using namespace std;
namespace
{
char c_string[ 10 ] = <
Which operator can be used in string concatenation?
a. * b. += c. ++ d. =+