To simplify retrieving cataloged or passed datasets, the programmer can give a file a unique name by coding a __________ parameter on the OS/JCL DD statement.
a. DDNAME
b. DSNAME
c. VOLUME
d. UNIT
b. DSNAME
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Which diagram models system structure?
a. State machine diagram. b. Class diagram. c. Activity diagram. d. Sequence diagram.
Each of the following has at least one error, either intent, or an error that may be caught by the compiler or both). What is the error? Assume all the variables you see are defined and initialized.
a) ``` for(int i = 0; i <10; i++); sum = sum +x; ``` b) ``` if (x > 0) x = 3 else x =4; ``` c) ``` if(x = 0) x = MAXINT; ``` d) ``` if x > 0 x = 3; ``` e) ``` if (x>0) then x =3; ```
The ability to combine data and operations is called ____.
A. inheritance B. encapsulation C. redefinition D. composition
The ____ Layer takes care of framing data, error detection, and maintains flow control over the physical connection.
A. Network B. Data-Link C. Transport D. Session