The "WHEN OTHER" condition in the "EVALUATE" statement is similar to the "OTHERWISE" clause in a _____ statement.
- CASE
- IF
- PERFORM
- SELECT
The "WHEN OTHER" condition in the "EVALUATE" statement functions similarly to the "OTHERWISE" clause in a "CASE" statement. It captures any conditions not explicitly specified in preceding "WHEN" clauses, providing a default action.
In COBOL, the "Extend" access mode is used for _____
- Adding new records to a file
- Deleting records from a file
- Modifying existing records
- Reading records sequentially
The "Extend" access mode in COBOL is used for adding new records to a file. When opening a file in "Extend" mode, the file position indicator is set to the end of the file, allowing new records to be appended.
The _____ verb in COBOL is used for assigning values to data items.
- COMPUTE
- INITIALIZE
- MOVE
- SET
In COBOL, the MOVE verb is used for assigning values to data items. It allows you to transfer data from one data item to another.
In COBOL, the _______ clause is used to declare exception conditions that can be raised during program execution.
- ERROR
- EXCEPTION
- INVALID
- ON EXCEPTION
In COBOL, the EXCEPTION clause is used to declare exception conditions. It allows the programmer to specify the actions to be taken when an exceptional situation occurs during program execution.
When a file operation fails in COBOL, which special register contains the status code that can be checked for specific error conditions?
- ERROR-CODE
- FILE-STATUS
- RETURN-CODE
- STATUS-CODE
The FILE-STATUS special register in COBOL contains the status code that can be checked after a file operation to identify specific error conditions. Programmers can use this information to implement error-handling logic based on the nature of the error.
In Object-Oriented COBOL, what is method overloading, and how is it useful?
- It allows multiple methods with the same name but different parameters.
- It enforces encapsulation in classes.
- It is a technique to override inherited methods.
- It restricts the use of methods to a single class.
Method overloading in Object-Oriented COBOL refers to the ability to define multiple methods with the same name but different parameters. This is useful for creating more flexible and intuitive class interfaces, allowing methods with similar functionality to be invoked based on the context of usage.
What is the purpose of the COBOL REDEFINES clause?
- To allocate memory for a variable
- To allow two or more data items to share the same storage space
- To declare a new variable
- To specify the data type of a variable
The COBOL REDEFINES clause is used to allow two or more data items to share the same storage space. It enables multiple names to reference the same memory location, providing flexibility in data representation.
In COBOL, the EXEC SQL _____ statement is used to declare an SQL cursor.
- CLOSE
- DECLARE
- FETCH
- OPEN
In COBOL, the EXEC SQL DECLARE statement is used to declare an SQL cursor. Cursors are used to navigate through the result sets obtained from SQL queries.
You are coding a COBOL program that reads records from a file until a specific condition is met. Which type of PERFORM loop and termination condition would you use in this scenario, and why?
- PERFORM THRU loop with a condition
- PERFORM UNTIL loop with a condition
- PERFORM VARYING loop with a condition in AFTER clause
- PERFORM WITH TEST BEFORE loop with a condition
A PERFORM UNTIL loop with a condition would be suitable for reading records from a file until a specific condition is met. The PERFORM UNTIL loop iterates until the specified condition becomes true, making it ideal for scenarios where you need to process records until a certain criterion is satisfied.
The REDEFINES clause is particularly useful when dealing with data conversion or changing the _____ of existing data items
- Data Types
- Lengths
- Names
- Values
The REDEFINES clause in COBOL is beneficial for handling data conversion or changing the values of existing data items. It allows for efficient memory utilization and facilitates manipulation of data.