Which of the following is not a disadvantage of trying to modify a sequential access file?
a. Modifying data can potentially destroy other data.
b. It may be necessary to rewrite every record in the file to make a slight change.
c. Things that are stored in the same number of “raw data” bytes internally may not take up the same amount of
space in a file.
d. Overwriting a record with another record of the same size is very difficult.
d. Overwriting a record with another record of the same size is very difficult.
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If an array variable is dropped where a ____ can appear, Alice displays a menu from which you can select the ____ version of the subscript operation.
A. statement; write B. placeholder; write C. statement; read D. placeholder; read
The most commonly used public-key algorithm is_______, an encryption system developed in 1977 by MIT professors Ron Rivest, Adi Shamir and Leonard Adleman.
a) PGP. b) RSA. c) PKA. d) None of the above.
You can access frequently used applications in Mac OS X by clicking their icons on the ______________.
Fill in the blank(s) with the appropriate word(s).
How many times is the println statement executed?
for (int i = 0; i < 10; i++) for (int j = 0; j < i; j++) System.out.println(i * j) a. 100 b. 20 c. 10 d. 45