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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. Which of the following is the most appropriate way of avoiding a recursive deadlock?

A) Aborting the Transaction
B) Partitioning the relevant Database
C) Setting a time limit on the runtime of the Transaction
D) Changing the program

2. Which of the following best describes an atomic transaction?

A) Referential Integrity is maintained in the database
B) If one part of the transaction fails, the remainder may still be processed
C) Only valid data will be written to database
D) The database modifications must follow an 'all or nothing' rule

3. A file containing FIXED BINARY fields that is written by a PL/I program on Intel Architecture is to be read
by PL/I programs on Intel Architecture and on the mainframe. What must be changed in the program
which reads the file on Intel architecture, if anything, for it to work correctly when it run s on the
mainframe?

A) The program must declare the FIXED BINARY fields with the attribute LITTLEENDIAN.
B) The program must declare the FIXED BINARY fields with the attribute BIGEND IAN.
C) The program must declare the FIXED BINARY fields with the attribute NATIVE.
D) Nothing needs to be changed.

4. Lt there is a direct read access to a data object with a unique key (e.g., DB2-SELECT, IMS-GU, ...),
which of the following return codes is possible?

A) OK, not found, database not available
B) OK, end file, not found
C) OK, duplicate key, database not available
D) OK, end file, database not available

5. The following coding standards are enforced at a programming shop:
* All procedures must include a comment describing its function
* All automatic variables must be explicitly initialized when declared * No nested IF statements (implement
as SELECT)
Considering the following code, how many coding standard violations exist?
CALL P1(1);
/* ------- proc p1------- */
P1: PROC(l);
DCL I BIN FIXED(31);
DCL (J,K) BIN FIXED(31) INIT(0);
IF I = 1
THEN IF J = 2
THEN K = 3;
ELSE K = 4;
ELSE K = 5;
END;

A) 3
B) 2
C) 1
D) 4

Solutions: