IBM C6030-041 問題集

質問 1：
CORRECT TEXT
Which of the following describes when a program is NOT FETCHABLE?
A. When two main programs referring to the called program at the same time cannot have
different versions of the called program
B. When the called program will be loaded from the library at execution time
C. When the main program need not be recompiled to reflect the changes made in the called program
D. When the called program is part of the main program in the load module
正解：D

質問 2：
CORRECT TEXT
Given the following code, how many times is the loop executed?
DCL A(11) FIXED DEC(15,3);
DCL I FIXED BIN (31);
DO I = 1 TO 11;
A(I) = 0;
I = 1+1;
END;
A. 11
B. 6
C. Infinitely
D. 1
正解：B

質問 3：
CORRECT TEXT
What happens, if anything, after end of rile has been reached in the following code?
DCL INF FILE RECORD INPUT;
DCL INFIELD CHAR(100) BASED(P);
DCL P PTR;
DCL EOF BIT(1) INIT('0'B);
ON ENDFILE(INF) BEGIN;
EOF = '16;
ALLOC INFIELD;
INFIELD = 'EOF REACHED';
END;
OPEN FILE(INF);
READ FILE(INF) SET(P);
DO WHILE(^EOF);
READ FILE(INF) SET(P);
END;
A. There will be an infinite
loop.
B. Nothing because end of file will never be reached.
C. Runtime error because there
SE statement.
D. INFIELD will have a value 'EOF REACHED' and the program ends.
正解：D

質問 4：
CORRECT TEXT
If the physical dataset referred to by DDOUT has a maximum record length of 200 and RECFM=V,
what happens alter executing the following code?
DCL DDOUT FILE RECORD OUTPUT;
DCLI BIN FIXED(15) INIT(0);
DCL 1 OUTSTR,
2 A CF-IAR(150),
2 B CI-IAR(46);
OPEN FILE(DDOUT);
DO It 1 TO 10;
WRITE FILE(DDOUT) FROM(OUTSTR);
END;
A. 10 records will be written to the output file.
B. At compile time, an error will occur because of mismatch of record length.
C. Nothing will be written to the output file.
D. At runtime, an error will occur because of mismatch of record length.
正解：A

質問 5：
CORRECT TEXT
What will be output by the following program?
TEST: PROC OPTIONS(MAIN);
DCL A CONTROLLED FIXED BIN(31);
ALLOC A;
ALLOC A;
CALL SUB(A);
PUT SKIP LIST( ALLOCN(A));
SUB: PROC( B);
DCL B CONTROLLED FIXED BIN(31);
FREE B;
ALLOC B;
ALLOC B;
FREE B;
ALLOC B;
END;
END;
A. 2
B. 3
C. 4
D. 5
正解：B

質問 6：
CORRECT TEXT
Given the following code, what is the value of X after execution of the assignment?
DCL X CHAR (5) lNlT ('ABCDE');
DCL Y CHAR (3) lNlT ('123');
X = Y
A. '123' followed by blanks
B. 'ABCDE'
C. '123' followed by low values
D. '123' followed by 'DE'
正解：A

質問 7：
CORRECT TEXT
Given the following code, what condition prefixes should be placed before the statement to ensure that the reference is valid?
PUT SKIP LIST( '< !! SUBSTR(X,1 ,N) !!'>');
A. SUBSCRIPTRANGE
B. STRINGRANGE
C. SIZE
D. STRINGSIZE
正解：B