Answer the following questions true (T) or false (F)
1. The least common error in using an array is a subscript range error.
2. The assignment operator = can be used for string assignment only when initializing a string variable in its declaration.
3. If "cat" is the value of the string variable str, then str[3] is the null character.
1. False
2. True
3. True
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Frequency analysis refers to:
a. Analyzing the rate of occurrence of characters in ciphertext b. Eavesdropping on spread-spectrum radio frequency transmission in order to harvest encryption keys c. Analyzing the rate of occurrence of characters in plaintext d. Analysis of emanations in order to harvest encryption keys
A _________ is an encryption/decryption scheme in which a block of plaintext is treated as a whole and used to produce a ciphertext block of equal length. ?
Fill in the blank(s) with the appropriate word(s).