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IBM Developing with IBM Enterprise PL/I Sample Questions:

1. Given the following code, what are the default attributes of DSET1 after the READ statement?
DCL DATA CHAR (80);
DCL DSET1 FILE;
READ FILE(DSET1) INTO(DATA);

A) SEQUENTIAL RECORD INPUT
B) DIRECT INPUT
C) KEYED RECORD INPUT
D) STREAM INPUT

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

3. A PL/I program performance analwer can best help identify which of the following?

A) Adequate code coverage
B) Incorrect program logic
C) Changes needed to database tables
D) CPU hotspots and elapsed time percentages by procedure

4. What characterizes the hierarchical data model with respect to data access?

A) Data access can only be via an index.
B) Data access supports parent-child relationships.
C) Data access can only be sequential.
D) Data access supports tables.

5. How much storage in bytes will be allocated for the following declaration?
DCL 1 S(10) ALIGNED,
2 A BIN FIXED(15),
2 B DEC FIXED(3),
2 C CHAP(3);

A) 69
B) 80
C) 79
D) 70

Solutions: