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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. Given the following pseudocode inside a loop, where should the COMMIT action be placed assuming that
there is always a one-to-many relationship between header and detail tables?
1 Find header row 2 IF found 3 Update header row 4 Find detail row 5 IF found THEN 6 Update detail
rows 7 ELSE 8 ENDIF 9 ENDIF

A) After lines 3, 8, and 9
B) After line 8
C) After line 6
D) After line 3

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

3. What happens after executing the following code, assuming the input file has more than 1 record?
DCL INPFILE FILE RECORD INPUT ENV(VB RECSIZE(100)); DCL P PTR;
DCL B CHAR(100) VARYING BASED(P);
DCLC CHAR(110) VARYING BASED(P);
READ FILE(INPFILE) SET(P);
C=B!! 'EXTENDED
READ FILE(INPFILE) SET(P);

A) Protection exception because of the reference to B.
B) The results are unpredictable.
C) ENDFILE condition is raised on the second read.
D) Two records are read.

4. Assuming there is no information about the duration or each table update and the programs are running in
a multitasking environment, which of the following options will best minimize the chance for deadlocks?

A) All programs update Table A, Table B and Table C in the same order.
B) Program A updates Table A, Table B and Table C in the specified order, and Program B updates Table
B, Table C and Table A in the specified order.
C) Programs update table A, Table B and Table C in random order.
D) Program A updates Table A, Table B and Table C in the specified order, and Program B updates Table
C, Table B and Table A in the specified order.

5. Which of the following will definitely NOT cause an unresolved external entry?

A) A mismatch in names between the CALL and the actual procedure
B) Missing library at link time
C) An incorrect DECLARE for the external entry
D) The main procedure name matching the binder or load module 'name'

Solutions: