_____ is a key concept in Object-Oriented COBOL that restricts access to certain data and methods to only within the class.
- Abstraction
- Encapsulation
- Inheritance
- Polymorphism
Encapsulation is a key concept in Object-Oriented COBOL that restricts access to certain data and methods to only within the class. It helps in hiding the internal details of a class from the outside world, promoting data security and integrity.
In COBOL, the index file associated with an indexed file is used to provide _____ access to records.
- Direct
- Random
- Relative
- Sequential
In COBOL, an indexed file is associated with an index file that allows direct access to records based on the values in the indexed field. This provides efficient access to specific records without the need to sequentially read through the entire file.
The _____ statement in COBOL is commonly used to handle variable-length records based on a condition.
- EVALUATE
- IF
- PERFORM
- SEARCH
The "EVALUATE" statement in COBOL is commonly used to handle variable-length records based on a condition. It allows for structured conditional processing, making it suitable for scenarios involving variable record lengths.
Handling time zones can be challenging when dealing with _____-based systems in COBOL.
- CST
- GMT
- PST
- UTC
COBOL typically deals with time in Coordinated Universal Time (UTC) when handling time zones. This helps standardize time representations across different regions and avoids complexities related to daylight saving time changes.
Which section of a COBOL program includes the program's logic and calculations?
- DATA DIVISION
- ENVIRONMENT DIVISION
- IDENTIFICATION DIVISION
- PROCEDURE DIVISION
The "PROCEDURE DIVISION" of a COBOL program is where the actual logic, calculations, and executable statements are written. It contains the operational part of the program.
In indexed file processing, the _______ clause is used to specify whether the file will be opened for input, output, or both.
- ACCESS
- FILE STATUS
- MODE
- ORGANIZATION
The MODE clause in COBOL indexed file processing is used to specify whether the file will be opened for input, output, or both. It determines the operations that can be performed on the file during program execution.
When opening a file in "Output" mode, COBOL will _____ an existing file with the same name.
- Append
- Ignore
- Overwrite
- Rename
When opening a file in "Output" mode, COBOL will overwrite an existing file with the same name. This means that if a file with the specified name already exists, its content will be replaced by the new data.
Which COBOL verb is commonly used to handle file errors and exceptions?
- CONTINUE
- FILE-CONTROL
- HANDLE
- ON EXCEPTION
The FILE-CONTROL verb in COBOL is commonly used to handle file errors and exceptions. It specifies various attributes of files, including the FILE STATUS clause, which helps in managing file-related errors during program execution.
How does the OCCURS clause in COBOL relate to arrays and tables in the Data Division?
- It defines the number of occurrences of a data item in an array
- It indicates the starting index of an array
- It is used to initialize the values of an array
- It specifies the data type of elements in an array
The OCCURS clause in COBOL is used to define the number of occurrences of a data item in an array or table. It is a way of creating arrays and tables, allowing for the storage of multiple related values under a single data name.
Which COBOL intrinsic function is commonly used to convert a numeric value to a character string?
- FUNCTION EDIT
- FUNCTION MOVE
- FUNCTION NUMERIC
- FUNCTION NUMVAL
The commonly used COBOL intrinsic function for converting a numeric value to a character string is FUNCTION NUMVAL. It allows the conversion of numeric data to its alphanumeric representation, facilitating data manipulation and display.