An attribute declared as a(n) _____ token must have a value equal to the value of anIDattribute located somewhere in the same document.

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

For the String line1 to have 4 tokens, delimArg should be:

``` String line1 = new String("c = 1 + 2 + 3") ; StringTokenizer tok = new StringTokenizer(line1, delimArg); ``` a. String delimArg = "+="; b. String delimArg = "123" c. String delimArg = "c+"; d. String delimArg = " ";