Mainframe COBOL and CICS Programming Quiz

The CICS transaction command cemt set is used to update or alter the status of CICS resources dynamically, such as opening or closing files. It is not used to configure performance parameters.

The CICS system transaction command cemt inq (Inquire) is used to query and view the status of various CICS resources. Option (a) is incorrect because cemt set is used to alter resource states, not interrupt them.

To answer this question, the user needs to know about Transient Data Queues (TDQs) and how to prevent multiple users from accessing the same TDQ at the same time.

Option A: By issuing an EXEC CICS ENQ against the resource.
This option is correct because an ENQ command is used to obtain a lock on a resource, such as a TDQ, to prevent other transactions from accessing it simultaneously. By issuing an ENQ command against the TDQ, a lock is obtained, and other transactions are blocked from accessing the same TDQ until the lock is released with a DEQ command.

Option B: By issuing an EXEC CICS EQN against the resource.
This option is incorrect because there is no such command as EQN in CICS.

Option C: By issuing an EXEC CICS DEQ against the resource.
This option is partially correct because a DEQ command is used to release a lock on a resource, such as a TDQ, after it has been obtained with an ENQ command. However, it does not prevent multiple users from accessing the same TDQ at the same time.

Option D: By issuing an EXEC CICS DQE against the resource.
This option is incorrect because there is no such command as DQE in CICS.

Option E: By issuing an EXEC CICS TDQ against the resource.
This option is incorrect because a TDQ command is used to read from or write to a TDQ, but it does not prevent multiple users from accessing the same TDQ at the same time.

Therefore, the correct answer is:

The Answer is: A. By issuing an EXEC CICS ENQ against the resource.

To obtain the user logon-id in CICS, use 'EXEC CICS ASSIGN with the OPERID option'. This retrieves the operator identifier for the current user. The USERID option would retrieve a different identifier, and GRPID is for group ID, making option A the correct choice.

An asynchronous queue does NOT wait for a response - it allows non-blocking communication where the sender continues processing without waiting for the receiver's acknowledgment. Synchronous queues wait for responses.

CEMT I TRAN is the CICS (Customer Information Control System) command to inquire about and display transaction status. CECI is for command interpreter, CEDF is the execution diagnostic facility, and CEMT TRAN is incomplete syntax.

Transaction S330 is used in CICS environments to view MQ (Message Queue) contents between Mainframes and Java applications. The other transaction IDs (S340, S350, S360) are not the standard queue monitoring transactions.

Trigger depth should be set to 3 when there are 2 records in the error queue. This ensures the MQ trigger fires when a new message arrives (2 + 1 = 3), preventing the trigger from continuously firing while records remain in the queue.

Omegamon is a comprehensive monitoring tool for IBM mainframes that can monitor CICS (transaction processing), DB2 (database), and MVS (operating system) resources among others, making 'All of the above' correct.

A datagram queue handles asynchronous, fire-and-forget messages. In specific transactional queuing systems, reaching a threshold limit of messages in the datagram queue triggers a transaction to process the batch. Other queues like input, output, or reply queues serve different messaging patterns.

A backout queue (or dead-letter queue) holds messages that failed processing. In message-oriented middleware, if an application fails to process datagram messages from a datagram queue, the erroneous records are redirected to the backout queue to prevent processing loops, making the statement true.

In certain message queuing and database contexts, MQGETD is designed as a destructive get operation that retrieves and deletes records from a queue while routing them to a backup. Standard MQGET simply retrieves messages, while MQGETS and MQGETM do not perform this specific combined backup and deletion task.

You can check both the Transaction ID and the associated CICS region for a queue using CICS monitoring and inquiry commands. This is standard functionality in CICS queue management.

In logical expression evaluation within COBOL and most programming languages, the operator precedence order from highest to lowest is NOT, followed by AND, and finally OR. This ensures negation is evaluated first, conjunction second, and disjunction last.

A minimally valid COBOL program requires at least 2 lines: the IDENTIFICATION DIVISION header and the PROGRAM-ID paragraph with a program name. While a PROCEDURE DIVISION with at least one statement is needed for execution, the compilation minimum is technically 2 lines.

COBOL-85 standard increases the maximum number of dimensions (OCCURS nesting level level limit) an array can have to 7. Earlier versions like COBOL-74 limited the dimensions to 3. Options specifying 5, 6, or 8 are incorrect based on the COBOL-85 standard specifications.

Subtracting 20 from a PICTURE 99 variable (unsigned, holding 10) results in -10. Since the picture clause lacks a sign identifier 'S' (it is PIC 99, not PIC S99), the negative sign is dropped, leaving the value as unsigned 10. Thus, the resultant value of X remains 10.

COBOL file status code 06 indicates an attempt to write to a file that was opened with INPUT mode (OPEN INPUT). Files opened for input are read-only, so write operations cause this specific error condition.

In COBOL IF conditions, valid relational operators are =, <, >, =< (less than or equal), and >= (greater than or equal) without spaces. The syntax '= >' with a space between is invalid COBOL syntax and will cause a compilation error.