IBM IBM Certified Application Developer C6030-042 Questions & Answers

• Question 41:

  When a program reads a variable record format dataset via LOCATE mode, what happens?

  A. READ pointer points to the length bytes in the buffer.

  B. READ pointer points to first data byte in the buffer.

  C. READ data is placed in specified area.

  D. The ENDFILE condition is never raised.

  Correct Answer: B

• Question 42:

  Requirement:

  The function LEAPYEAR evaluates a given 4-digit number and returns `1'B if it is a leap year, `0'B if it is

  not. This function is supposed to work for the years 2004 to 2015. Leap years occur every four years,

  except for years ending in 00 that are not divisible by 400. Which of the following solutions meets the

  requirement and does NOT need to be changed if the requirement changes to: The function is supposed

  to work for the years 1900 to 3000.

  A. LEAPYEAR: PROC(YEAR) RETURNS(BIT(1));DCL YEAR PlC `9999';DCL (MOD,VERIFY) BUILTIN;SELECT;WHEN (VERIFY(YEAR,'0l 23456789') ^= 0) RETURN('0'B);WHEN (MOD (YEAR,100) = 0)RETURN('0'B);WHEN (MOD(YEAR,4) = 0)RETURN('1'B);OTHERRETURN('0'B);END;END LEAPYEAR;

  B. LEAPYEAR: PROC(YEAR) RETURNS(BIT(1));DCL YEAR PlC `9999';DCL VERIFY BUILTIN;IFVERIFY(YEAR,0123456789)^= 0 THEN RETURN('0'B);SELECT(YEAR);WHEN (2004) RETURN('1'B);WHEN (2008) RETURN('1'B);WHEN (2012) RETURN('1'B);OTHER RETURN ('0'B);END;END LEAPYEAR;

  C. LEAPYEAR: PROC(YEAR) RETURNS(BIT(1));DCL YEAR PlC `9999';DCL (MOD,VERIFY) BUILTIN;SELECT;WHEN (VERIFY(YEAR `0123456789') ^= 0) RETURN('0'B);WHEN (MOD (YEAR,400) = 0) RETURN('l'B); WHEN (MOD(YEAR,100) = 0) RETURN('0'B); WHEN (MOD(YEAR,4) = 0) RETURN('1'B); OTHER RETURN('0'B);END;END LEAPYEAR;

  D. LEAPYEAR: PROC(YEAR) RETURNS(BIT(1));DCL YEAR PlC `9999';DCL (MOD,VERIFY) BUILTIN;SELECT;WHEN (VERIFY(YEAR `0123456769') ^= 0) RETURN('0'B); WHEN (MOD (YEAR,100) = 0) RETURN('0'B);WHEN (MOD(YEAR,400) = 0) RETURN('1'B);WHEN (MOD(YEAR,4) = 0) RETURN('1'B);OTHERRETURN('0'B);END;END LEAPYEAR;

  Correct Answer: C

• Question 43:

  Which of the following declarations is NOT accepted by the compiler?

  A. DCL A (3,3) FLOAT DEC (16) INIT ((3)(3)1);

  B. DCL B (3,3) FLOAT DEC (16) INIT ((3)(1), (2)(1,1,1));

  C. DCL C (3,3) FLOAT DEC (16) INIT ((9)1);

  D. DCL D (3,3) FLOAT DEC (16) INIT ((*)1);

  Correct Answer: A

• Question 44:

  Which of the following characters may NOT be translated correctly when moving between code pages, character sets and platforms?

  A. A

  B. +

  C. 9

  D. ¦è

  Correct Answer: D

• Question 45:

  Which of the following is LEAST likely to be performed by a batch program?

  A. Sorting

  B. Sequential file processing

  C. User interaction

  D. Production of pay checks

  Correct Answer: C

• Question 46:

  What happens to AUTOMATIC variables when a procedure is called recursively?

  A. The values from the previous invocation are lost.

  B. The values from the previous invocation are saved and are available to the new invocation.

  C. The values from previous invocations are preserved but can be overwritten in the new invocation.

  D. The values from the previous invocation are saved and are available when the current invocation ends.

  Correct Answer: D

• Question 47:

  Which of the following is NOT a characteristic of the RANDOM builtin function?

  A. RANDOM can be called without any parameters.

  B. The values generated by RANDOM are uniformly distributed between 0 and 1, where 0 < random() < 1.

  C. RANDOM can be called with an optional SEED to avoid getting repeatable results.

  D. RANDOM can be called with an optional upper bound.

  Correct Answer: D

• Question 48:

  Which of the following is the most likely reason to use a debugger in a production environment?

  A. Enhance performance

  B. Ensure data integrity

  C. Investigate error situations

  D. Test a program

  Correct Answer: C

• Question 49:

  What is a program internal specification document?

  A. A description of how the program can be used

  B. A description of how the program does its work

  C. The history of changes of the program and how it worked

  D. A summary of the program's performance data

  Correct Answer: B

• Question 50:

  Which of the following is generally NOT an area of concern when calling a program written in another language from PL/I?

  A. Storage management

  B. Acceptable calling conventions

  C. Data mapping

  D. Condition handling

  Correct Answer: A