C9050-042無料問題集「IBM Developing with IBM Enterprise PL/I」

質問 1

What does it mean that an interface is synchronous?

（A）Requests are processed in parallel

（B）Requests are processed randomly

（C）Requesting program must wait for a reply

（D）Requesting program always receives immediate response

正解：C 解答を投票する

質問 2

Program A calls program B with PC as a parameter defined BIN FIXED (31 .0). Program B sets PC as
follows:
0 OK
4 WARNING
8 ERROR
Which of the following is the most appropriate statement for testing the PC variable?

（A）IF (RC >4) THEN PUT SKIP LIST('ERROR IN B');
ELSE PUT SKIP LIST('UNKNOWN VALUE FROM B');

（B）IF (RC ^= 0) & (RC ^= 4) THEN PUT SKIP LIST('ERROR IN B');
ELSE IF RC> 8 THEN PUT SKIP LIST('UNKNOWN VALUE FROM B);

（C）SELECT (RC); WHEN (0,4); WHEN (8) PUT SKIP LIST ('ERROR IN B');
OTHERWISE PUT SKIP LIST('UNKNOWN VALUE FROM B');
END;

（D）SELECT (RC);
WHEN (0, 4);
OTHERWISE
PUT SKIP LIST('UNKNOWN VALUE FROM B');
END;

正解：C 解答を投票する

質問 3

Given the following code, which set of statements will insert the new element into the doublylinked list
after the element pointed to by P?
DCL1X BASED,
2 FORWARD POINTER,
2 BACKWARD POINTER,
2 DATA FIXED BIN (31);
ALLOC X SET(Q);

（A）P->FORWARD->BACKWARD = Q;
P->FORWARD = Q;
Q->FORWARD = P->FORWARD;
Q->BACKWARD = P;

（B）Q->FORWARD = P-> FORWARD;
Q->BACKWARD = P;
P->FORWARD->BACKWARD = P;
P->FORWARD = Q;

（C）Q->FORWARD = P->FORWARD;
Q->BACKWARD = P;
P->FORWARD = Q;
P->FORWARD->BACKWARD = Q;

（D）Q->FORWARD = P;
Q->BACKWARD = P->BACKWARD;
P->FORWARD = Q
P->BACKWARD = Q;

正解：B 解答を投票する

質問 4

Requirement Copy a dataset of record length 100 to another dataset.
If the following code does not fulfill the requirement above, which is the most likely reason?
DCL DDIN FILE RECORD INPUT;
DCL DDOUT FILE RECORD OUTPUT;
DCL INSTRUC CHAR(100);
DCL EOF_IN BIT(1) INIT('0'B);
ON ENDFILE(DDIN) EOF_IN = '1'B;
READ FILE(DDIN) INTO(INSTRUC);
DO WHlLE(^EOF_IN);
WRITE FILE(DDOUT) FROM(INSTRUC);
READ FILE(DDIN) INTO(INSTRUC);
WRITE FILE(DDOUT) FROM(INSTRUC);
END;

（A）The code does not fulfill the requirement because the input structure is the same as the output
structure.

（B）The code does not fulfill the requirement because too many records will be written to the output dataset,
except when the input dataset is empty.

（C）The code fulfills the requirement.

（D）The code does not fulfill the requirement because the OPEN statements are missing.

正解：B 解答を投票する

質問 5

Which of the following may be an advantage of the BEGIN OPTIONS (INLINE) statement?

（A）The program uses less stack storage.

（B）The code runs faster because more variables will be optimized in the BEGINblock.

（C）The program runs faster because all variables declared inside the BEGIN block are already allocated
when the block containing the BEGINblock is entered.

（D）The program uses less heap storage.

正解：C 解答を投票する

質問 6

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 3

（C）After line 8

（D）After line 6

正解：C 解答を投票する

質問 7

Given the following code, what measure will NOT improve stability?
S1: PROC (X,Y,Z);
DCL X DEC FIXED (5);
DCL Y PlC '99999';
DCL Z DEC FIXED (5);
Z = X + Y;
END;

（A）Check result overflow.

（B）Check Z for valid packed data.

（C）Check Y for valid numeric data.

（D）Check X for valid packed data.

正解：B 解答を投票する

質問 8

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

（A）Aborting the Transaction

（B）Changing the program

（C）Partitioning the relevant Database

（D）Setting a time limit on the runtime of the Transaction

正解：B 解答を投票する

質問 9

A lead developer reviewing code from one of the programmers found the following code. What should the
programmer be told about BY NAME assignments?
DCLl STR1, 3FB15 FIXED BIN (15), 3 CH10 CHAR (10), 3 NAME CHAR (25). 3 ADDR CHAR (30), 3
FB31 FIXED BIN(31);
DCL 1 STR2, 3 FB31 FIXED BIN (31), 3 FB31B FIXED BIN (31), 3 NAME CHAR (20), 3 ADDR CHAR
(30), 3 CH20 CHAR (20);
STR2 = STR1, BY NAME;

（A）They can have inadvertent side effects and the code should be analwed.

（B）There is nothing wrong with using BY NAME assignments in this situation.

（C）They are incorrect and should be replaced by individual assignments.

（D）They do not work in this case and the code should be replaced by individual assignments.

正解：A 解答を投票する

C9050-042 無料問題集「IBM Developing with IBM Enterprise PL/I」

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