To use extended attributes, you need to define the correct terminal type and enable the necessary settings. Let's go through each option to understand why it is correct or incorrect:

Option A) Define EXTATT=YES and the correct terminal type - This option is correct because it specifies the correct attribute, "EXTATT," and enables it by setting it to "YES." Additionally, it mentions the need to define the correct terminal type.

Option B) Define EXTDATT=YES and the correct terminal type - This option is incorrect because it misspells the attribute as "EXTDATT" instead of "EXTATT."

Option C) Define EXTATRB=YES and the correct terminal type - This option is incorrect because it incorrectly spells the attribute as "EXTATRB" instead of "EXTATT."

Option D) Define XTDATRB=YES and the correct terminal type - This option is incorrect because it incorrectly spells the attribute as "XTDATRB" instead of "EXTATT."

The correct answer is Option A. This option is correct because it specifies the correct attribute ("EXTATT") and enables it by setting it to "YES." Additionally, it mentions the need to define the correct terminal type.

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To answer this question, we need to understand the concepts of physical maps and symbolic maps in the context of computer programming.

Option A) The physical map is the load module, and the symbolic map is the data structure. This option is incorrect. In computer programming, a physical map is not related to load modules, and a symbolic map is not related to data structures.

Option B) The physical map is the data structure, and the symbolic map is the load module. This option is incorrect. The physical map is not a data structure, and the symbolic map is not a load module.

Option C) The physical map is mapped with addresses, and the symbolic map is the logical one. This option is incorrect. The physical map is not necessarily mapped with addresses, and the symbolic map is not just a logical representation.

Option D) There is no difference. This option is incorrect. There is a difference between physical maps and symbolic maps.

The correct answer is A) The physical map is the load module, and the symbolic map is the data structure. In computer programming, a physical map refers to the compiled code or load module of a program. It represents the executable version of the program that can be run on a computer.

On the other hand, a symbolic map is a data structure that provides information about the program's variables, functions, and other symbols. It is used by developers and debuggers to understand the structure and behavior of the program without analyzing the compiled code directly.

Therefore, the correct answer is A) The physical map is the load module, and the symbolic map is the data structure.

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• Wrong explanation

To answer this question, we need to understand the representation of COMP-3 fields in COBOL.

A COMP-3 field, also known as a packed decimal field, is a type of numeric data storage format in COBOL. It is used to store decimal numbers with a fixed number of digits.

In a COMP-3 field, each digit is represented by a half-byte (4 bits). The sign (positive or negative) is stored in the last half-byte.

The S9(7) notation indicates a signed numeric field with a total of 7 digits.

To calculate the number of bytes occupied by a COMP-3 field, we divide the total number of digits by 2 (since each digit occupies half a byte) and round it up to the nearest whole number.

In this case, the S9(7) field has a total of 7 digits. Dividing 7 by 2 gives us 3.5, which we round up to 4.

Therefore, a S9(7) COMP-3 field occupies 4 bytes.

Let's go through each option to understand why it is correct or incorrect:

Option A) 7 bytes - This option is incorrect because the S9(7) COMP-3 field occupies 4 bytes, not 7. Option B) 6 bytes - This option is incorrect because the S9(7) COMP-3 field occupies 4 bytes, not 6. Option C) 5 bytes - This option is incorrect because the S9(7) COMP-3 field occupies 4 bytes, not 5. Option D) 4 bytes - This option is correct because the S9(7) COMP-3 field occupies 4 bytes.

The correct answer is D.

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• Wrong explanation