Tag: programming languages

To solve this question, the user needs to know about COBOL programming in the context of IMS message processing programs (MPPs).

The statement is true. IMS message processing programs (MPPs) do not use non-IMS input or output statements such as READ, WRITE, REWRITE, OPEN, and CLOSE. Instead, they use IMS-specific input and output statements such as GU, GN, GV, and GN.

Option A is correct.

Option B is incorrect because the statement is true, so option A is the correct answer.

The Answer is: A

To answer this question, the user needs to know the difference between procedure pointers and function pointers and their respective use cases.

A function pointer is a pointer that points to a function. It can be used to call the function that it points to. A procedure pointer, on the other hand, is a pointer that points to a procedure. A procedure is similar to a function but does not return a value.

Now, let's go through each option and see which one is correct:

A. (1) C/C++-to-COBOL programs calls: This option is incorrect. Procedure pointers are not typically used in C/C++-to-COBOL programs calls. Instead, function pointers are used for this type of program.

B. (2) COBOL-to-C/C++ programs calls: This option is incorrect. Procedure pointers are not typically used in COBOL-to-C/C++ program calls. Instead, function pointers are used for this type of program.

C. (3) COBOL-to-COBOL programs calls: This option is correct. Procedure pointers are more efficient than function pointers for COBOL-to-COBOL program calls. This is because COBOL does not support function pointers, so procedure pointers must be used instead.

D. (4) C/C++-to-C/C++ programs calls: This option is incorrect. Function pointers are typically used for C/C++-to-C/C++ program calls, not procedure pointers.

Therefore, the correct answer is:

The Answer is: C. (3) COBOL-to-COBOL programs calls

To answer this question, the user needs to have knowledge about the concept of using an external file.

Option A is incorrect because it does not fully explain the benefit of using an external file. While it is true that the main program can reference the record area of the file even if it does not have input or output statements, this is not the main benefit of using an external file.

Option B is incorrect because it is a specific benefit that applies only to subprograms. It does not explain the general benefit of using an external file.

Option C is incorrect because it is too general. It does not explain the specific benefit of using an external file.

Option D is the correct answer because it includes all the benefits of using an external file. These include the ability for the main program to access the record area of the file, the ability for subprograms to control specific input or output functions, and the fact that multiple programs can have access to the same file.

Therefore, the answer is: D. (4) All the above.

To solve this question, the user needs to know what Enterprise COBOL and CBLTDLI are and their relation to IMS facilities.

CBLTDLI is a COBOL language feature that provides a call interface to the IMS DL/I database management system. It enables COBOL programs to access and manipulate IMS databases. Enterprise COBOL is a COBOL compiler developed by IBM for the z/OS operating system.

Now, let's go through each option and explain why it is right or wrong:

A. True: This option is incorrect. Enterprise COBOL supports the CBLTDLI call interface and allows COBOL programs to invoke IMS facilities. Therefore, option A is false.

B. False: This option is correct. Enterprise COBOL supports the CBLTDLI call interface, which enables COBOL programs to access IMS facilities. Therefore, option B is the correct answer.

The Answer is: B