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programming languages Online Quiz - 236

Description: programming languages Online Quiz - 236
Number of Questions: 20
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Tags: programming languages
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In the program specification Block the field length for the segment name is

  1. 4

  2. 8

  3. 6

  4. 12


Correct Option: B

AI Explanation

To answer this question, we need to understand the concept of field length in a program specification.

Field length refers to the maximum number of characters allowed in a particular field within a program specification. In this case, we are specifically looking at the field length for the segment name.

The correct answer is B) 8. This means that the segment name field in the program specification can have a maximum length of 8 characters.

SMB is

  1. System managed Buffering

  2. System managed buffer

  3. Service managed Buffering

  4. None of the above


Correct Option: A

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) System managed Buffering - This option is incorrect because SMB stands for Server Message Block, which is a protocol used for file sharing and communication between computers in a network. It does not stand for System managed Buffering.

Option B) System managed buffer - This option is incorrect because SMB does not stand for System managed buffer. As mentioned earlier, SMB stands for Server Message Block.

Option C) Service managed Buffering - This option is incorrect because SMB does not stand for Service managed Buffering. Again, SMB stands for Server Message Block.

Option D) None of the above - This option is incorrect because the correct answer is not "None of the above".

The correct answer is A) System managed Buffering.

  1. increases the number of Index buffers for random access

  2. increases the amount of virtual storage

  3. increases the number of Data buffers for sequential access

  4. All of the above


Correct Option: A

The process of VSAM REORG are

  1. Copy the data of VSAM file which has to be REORG into another dataset

  2. Delete the current VSAM dataset

  3. Define the VSAM dataset.

  4. All of the above


Correct Option: D
Explanation:

To answer this question, the user needs to have knowledge of VSAM (Virtual Storage Access Method) and the process of VSAM REORG.

The correct answer is:

D. All of the above

Explanation:

The process of VSAM REORG involves the following steps:

A. Copy the data of VSAM file which has to be REORG into another dataset: This step involves backing up the data in the VSAM file to another dataset before the REORG process can begin. This ensures that the data is not lost in case the REORG process fails.

B. Delete the current VSAM dataset: Once the backup is complete and verified, the original VSAM dataset can be deleted.

C. Define the VSAM dataset: After the original dataset has been deleted, a new VSAM dataset can be defined with the same name and attributes as the original dataset.

Therefore, all of the options listed above are correct steps that are involved in the process of VSAM REORG.

Which utility is used to reduce the File backup time?

  1. INZUTILB

  2. IKJEFT1A

  3. ADRDSSU

  4. XUE10200


Correct Option: C

EXPORT/IMPORT command is used

  1. for Backup/Recovery

  2. for increasing the speed

  3. for file backup

  4. All of the above


Correct Option: A

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) for Backup/Recovery - This option is correct because the EXPORT/IMPORT command is commonly used in database management systems for backup and recovery purposes. The EXPORT command allows you to extract data and database objects into a file, which can then be used for backup or recovery. The IMPORT command allows you to restore the exported data and objects back into the database.

Option B) for increasing the speed - This option is incorrect because the EXPORT/IMPORT command is not used for increasing the speed of a system. It is primarily used for backup and recovery purposes.

Option C) for file backup - This option is incorrect because while the EXPORT/IMPORT command can be used for backup purposes, it is specifically used for database backup, not file backup. The command is used to export database data and objects, not individual files.

Option D) All of the above - This option is incorrect because only option A (for Backup/Recovery) is correct. The EXPORT/IMPORT command is not used for increasing the speed or file backup.

The correct answer is A) for Backup/Recovery. This option is correct because the EXPORT/IMPORT command is commonly used in database management systems for backup and recovery purposes.

What are the restrictions of EXPORT / IMPORT process?

  1. Can only be used for VSAM datasets

  2. Dataset created by EXPORT command cannot have a sequential organization

  3. Dataset created by the IMPORT step is not processed until it has gone through corresponding EXPORT step

  4. Dataset created by EXPORT command can only have a sequential organization


Correct Option: A

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) Can only be used for VSAM datasets - This option is correct because the EXPORT/IMPORT process in mainframe systems is specifically designed for VSAM (Virtual Storage Access Method) datasets. It cannot be used for other types of datasets like sequential datasets or partitioned datasets.

Option B) Dataset created by EXPORT command cannot have a sequential organization - This option is incorrect. The dataset created by the EXPORT command can have a sequential organization. It is not restricted to only VSAM datasets.

Option C) Dataset created by the IMPORT step is not processed until it has gone through the corresponding EXPORT step - This option is incorrect. The IMPORT process can process datasets created by any EXPORT step, regardless of whether they are the corresponding EXPORT step or not. The IMPORT process is not dependent on a specific EXPORT step.

Option D) Dataset created by EXPORT command can only have a sequential organization - This option is incorrect. As mentioned earlier, the dataset created by the EXPORT command can have a sequential organization, but it is not limited to only sequential organization.

The correct answer is A) Can only be used for VSAM datasets. This option is correct because the EXPORT/IMPORT process is restricted to VSAM datasets in mainframe systems.

Format of EXPORT Command

  1. INFILE(ddname) | OUTDATASET(dsname)

  2. OUTFILE(ddname)| INDATASET(dsname)

  3. INFILE(ddname) | INDATASET(dsname)

  4. OUTFILE(ddname)| OUTDATASET(dsname)


Correct Option: D

AI Explanation

To answer this question, we need to understand the format of the EXPORT command.

The correct format of the EXPORT command is:

D. OUTFILE(ddname) | OUTDATASET(dsname)

This option is correct because it specifies the correct syntax for the EXPORT command. The keyword "OUTFILE" is used to specify the output file or dataset name, followed by the name assigned to the file or dataset (ddname or dsname). The vertical bar (|) is used to separate the parameters.

Option A) INFILE(ddname) | OUTDATASET(dsname) - This option is incorrect because it uses the keyword "INFILE" instead of "OUTFILE". The "INFILE" keyword is used to specify the input file or dataset, not the output.

Option B) OUTFILE(ddname) | INDATASET(dsname) - This option is incorrect because it uses the keyword "INDATASET" instead of "OUTDATASET". The "INDATASET" keyword is not a valid keyword for the EXPORT command.

Option C) INFILE(ddname) | INDATASET(dsname) - This option is incorrect because it uses both "INFILE" and "INDATASET" keywords, which are not valid for the EXPORT command.

The correct answer is option D) OUTFILE(ddname) | OUTDATASET(dsname) because it correctly represents the format of the EXPORT command.

Which is not a subcommand of EXPORT Parameter?

  1. ERASE / NOERASE

  2. INHIBITSOURCE / NOINHIBITSOURCE

  3. NOINHIBITSOURCE / INHIBITSOURCE

  4. TEMPORARY / PERMANENT


Correct Option: C

AI Explanation

To answer this question, we need to understand the EXPORT parameter and its subcommands.

The EXPORT parameter is used in various programming languages and tools to specify how data should be exported or saved. It typically has several subcommands that can be used to modify its behavior.

Let's go through each option to determine which one is not a subcommand of the EXPORT parameter:

Option A) ERASE / NOERASE - This option is a valid subcommand of the EXPORT parameter. It is used to specify whether existing data should be erased before exporting or not.

Option B) INHIBITSOURCE / NOINHIBITSOURCE - This option is a valid subcommand of the EXPORT parameter. It is used to specify whether source code or references to the source code should be included in the exported data or not.

Option C) NOINHIBITSOURCE / INHIBITSOURCE - This option is not a valid subcommand of the EXPORT parameter. It seems to be a combination of two existing subcommands, but it is not a recognized subcommand itself.

Option D) TEMPORARY / PERMANENT - This option is a valid subcommand of the EXPORT parameter. It is used to specify whether the exported data should be temporary or permanent.

Based on the above analysis, it is clear that Option C is not a subcommand of the EXPORT parameter. Therefore, the correct answer is C.

NOINHIBITSOURCE allows the source dataset to be updated after

  1. Write only Mode

  2. Read only Mode

  3. Read Write Mode

  4. All of the above


Correct Option: B

AI Explanation

To answer this question, we need to understand the concept of NOINHIBITSOURCE and the different modes of dataset access.

NOINHIBITSOURCE is a parameter used in mainframe systems to determine whether or not the source dataset can be updated after it is accessed. It is used in conjunction with the dataset access modes, which are as follows:

A. Write only Mode - This mode allows only write operations to the dataset. It means that you can only write or modify the contents of the dataset, but you cannot read or retrieve any data from it.

B. Read only Mode - This mode allows only read operations on the dataset. It means that you can only retrieve or access the data in the dataset, but you cannot modify or write any new data to it.

C. Read Write Mode - This mode allows both read and write operations on the dataset. It means that you can both retrieve and modify the data in the dataset.

D. All of the above - This option indicates that all the mentioned modes (Write only, Read only, and Read Write) are allowed with the NOINHIBITSOURCE parameter.

Based on the given correct answer, B) Read only mode is the correct option. NOINHIBITSOURCE allows the source dataset to be updated after accessing it in read-only mode. This means that you can retrieve data from the dataset, but you cannot modify or write any new data to it.

Therefore, the correct answer is B) Read only Mode.

INHIBITSOURCE parameter specifies that the source dataset can be

  1. Write only Mode

  2. Read only Mode

  3. Read Write Mode

  4. All of the above


Correct Option: B

AI Explanation

To answer this question, we need to understand the purpose of the INHIBITSOURCE parameter.

The INHIBITSOURCE parameter is used in mainframe systems, particularly in JCL (Job Control Language), to specify the access mode for a source dataset.

Option A) Write only Mode - This option is incorrect because the INHIBITSOURCE parameter does not specify write-only mode for the source dataset. It is used to control the read access to the source dataset.

Option B) Read only Mode - This option is correct. The INHIBITSOURCE parameter specifies that the source dataset can only be accessed in read-only mode. This means that programs or processes can read the data from the source dataset but cannot modify or write to it.

Option C) Read Write Mode - This option is incorrect because the INHIBITSOURCE parameter does not allow read-write access to the source dataset. It restricts the access to read-only mode.

Option D) All of the above - This option is incorrect because the INHIBITSOURCE parameter does not allow write-only or read-write access to the source dataset. It only allows read-only access.

Therefore, the correct answer is B) Read only Mode.

INHIBITTARGET parameter specifies that the target dataset can be accesed in

  1. Write only Mode

  2. Read only Mode

  3. Read Write Mode

  4. All of the above


Correct Option: B

AI Explanation

To answer this question, let's understand the meaning of the INHIBITTARGET parameter.

The INHIBITTARGET parameter is used to specify the accessibility mode for the target dataset.

Option A) Write only Mode - This option is incorrect because the INHIBITTARGET parameter does not allow write-only access to the target dataset.

Option B) Read only Mode - This option is correct because the INHIBITTARGET parameter allows read-only access to the target dataset.

Option C) Read Write Mode - This option is incorrect because the INHIBITTARGET parameter does not allow read-write access to the target dataset.

Option D) All of the above - This option is incorrect because the INHIBITTARGET parameter only allows read-only access to the target dataset, not write-only or read-write access.

The correct answer is B) Read only Mode. This option is correct because the INHIBITTARGET parameter specifies that the target dataset can be accessed in read-only mode.

NOINHIBITTARGET allows the target dataset to be fully updated after

  1. ERASE operation is complete

  2. NOERASE operation is complete

  3. IMPORT operation is complete

  4. EXPORT operation is complete


Correct Option: C

AI Explanation

To answer this question, we need to understand the purpose of the NOINHIBITTARGET option in a dataset operation.

The NOINHIBITTARGET option is used in SAS to allow the target dataset to be fully updated after a specific operation is complete. This option is often used when you want to update a dataset without any restrictions.

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

Option A) ERASE operation is complete - This option is incorrect because the NOINHIBITTARGET option is not related to the ERASE operation. The NOINHIBITTARGET option is used to update the target dataset after an operation, not specifically after erasing the dataset.

Option B) NOERASE operation is complete - This option is incorrect because the NOINHIBITTARGET option is not related to the NOERASE operation. The NOINHIBITTARGET option is used to update the target dataset after an operation, not specifically after not erasing the dataset.

Option C) IMPORT operation is complete - This option is correct. The NOINHIBITTARGET option allows the target dataset to be fully updated after the IMPORT operation is complete. This means that after importing data into a dataset, the NOINHIBITTARGET option allows any further updates to the dataset without any restrictions.

Option D) EXPORT operation is complete - This option is incorrect because the NOINHIBITTARGET option is not related to the EXPORT operation. The NOINHIBITTARGET option is used to update the target dataset after an operation, not specifically after exporting the dataset.

The correct answer is C) IMPORT operation is complete. This option is correct because the NOINHIBITTARGET option allows the target dataset to be fully updated after the IMPORT operation is complete.

TEMPORARY parameter directs VSAM to retain the source dataset after

  1. ERASE operation is complete

  2. NOERASE operation is complete

  3. IMPORT operation is complete

  4. EXPORT operation is complete


Correct Option: D

AI Explanation

To answer this question, you need to understand the purpose of the TEMPORARY parameter in VSAM.

The TEMPORARY parameter in VSAM is used to specify that a source dataset should be retained after a particular operation is complete. It allows the dataset to be available for other operations or processes.

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

Option A) ERASE operation is complete - This option is incorrect because the TEMPORARY parameter does not retain the source dataset after an ERASE operation. The purpose of the ERASE operation is to delete the data from the dataset, so there is no need to retain it.

Option B) NOERASE operation is complete - This option is incorrect because the TEMPORARY parameter does not retain the source dataset after a NOERASE operation. The NOERASE option is used to prevent the dataset from being erased during certain operations, but it does not affect the retention of the dataset.

Option C) IMPORT operation is complete - This option is incorrect because the TEMPORARY parameter does not retain the source dataset after an IMPORT operation. The IMPORT operation is used to copy data into a VSAM dataset, but it does not affect the retention of the source dataset.

Option D) EXPORT operation is complete - This option is correct because the TEMPORARY parameter directs VSAM to retain the source dataset after an EXPORT operation is complete. The EXPORT operation is used to copy data from a VSAM dataset to an external file, and the TEMPORARY parameter ensures that the source dataset is not deleted after the operation.

The correct answer is D) EXPORT operation is complete. This option is correct because the TEMPORARY parameter directs VSAM to retain the source dataset after an EXPORT operation is complete.

CIMODE parameter allows you to process target dataset in

  1. Control Interval

  2. Cascade Interval

  3. Record Mode

  4. None of the above


Correct Option: C
Explanation:

To solve this question, the user needs to know about the CIMODE parameter in mainframe systems.

The answer is: C. Record Mode

Explanation:

The CIMODE parameter is used in IBM mainframe systems to specify the mode of processing for the target dataset. It can have one of the following values:

  • CI (Control Interval) mode: This mode processes the target dataset in control interval format. Control intervals are groups of records that are read and written as a single unit. This mode is useful for datasets with a high number of records.

  • CA (Cascade) mode: This mode processes the target dataset in cascade mode, which means that records are read and written in groups of control areas. Control areas are groups of control intervals that are read and written as a single unit. This mode is useful for datasets with a high number of control intervals.

  • Record mode: This mode processes the target dataset in record mode, which means that records are read and written one at a time. This mode is useful for datasets with a low number of records.

Since the question asks which mode allows the processing of the target dataset in a record mode, the correct answer is C. Record Mode. Option A is incorrect because it refers to control interval mode, and option B is incorrect because it refers to cascade mode. Option D is incorrect because one of the above options is correct.

Which is a subcommand of IMPORT Parameter?

  1. INTOEMPTY

  2. OBJECTS

  3. Only b

  4. Both a and b


Correct Option: D
Explanation:

To solve this question, the user needs to have knowledge of the IMPORT command in SQL.

The correct answer is:

D. Both a and b

Explanation:

The IMPORT command is used to import data from an external file into a SQL database. The IMPORT command has several parameters, one of which is the "PARAMETERS" parameter. The "PARAMETERS" parameter has several subcommands, including "INTOEMPTY" and "OBJECTS".

  • The "INTOEMPTY" subcommand is used to import data into an empty table.
  • The "OBJECTS" subcommand is used to import data into an existing table.

Therefore, option D is correct because both subcommands "INTOEMPTY" and "OBJECTS" are subcommands of the IMPORT parameter.

Which is the correct syntax of INTOEMPTY Parameter?

  1. IMPORT INFILE(DD1) OUTFILE(DD2) IEMPTY

  2. IMPORT INFILE(DD1) OUTFILE(DD2) INTOEMPTY

  3. IMPORT INFILE(DD1) OUTFILE(DD2) IETY

  4. IMPORT INFILE(DD1) OUTFILE(DD2) EMPTY


Correct Option: A

AI Explanation

To answer this question, we need to understand the syntax for the INTOEMPTY parameter in the given context.

The correct syntax of the INTOEMPTY parameter is:

B. IMPORT INFILE(DD1) OUTFILE(DD2) INTOEMPTY

This option is correct because it uses the keyword "INTOEMPTY" to specify that the data from the input file (DD1) should be imported into the empty output file (DD2).

Option A) IMPORT INFILE(DD1) OUTFILE(DD2) IEMPTY - This option is incorrect because "IEMPTY" is not a valid keyword to specify the INTOEMPTY parameter.

Option C) IMPORT INFILE(DD1) OUTFILE(DD2) IETY - This option is incorrect because "IETY" is not a valid keyword to specify the INTOEMPTY parameter.

Option D) IMPORT INFILE(DD1) OUTFILE(DD2) EMPTY - This option is incorrect because "EMPTY" is not a valid keyword to specify the INTOEMPTY parameter.

Therefore, the correct answer is B) IMPORT INFILE(DD1) OUTFILE(DD2) INTOEMPTY.

DFDSS cannot be used to

  1. Reduce DASD free space fragmentation

  2. Copy or move data sets from one DASD device to another or dump

  3. Restore backup copies of entire DASD volumes

  4. Increase File storage


Correct Option: D

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) Reduce DASD free space fragmentation - DFDSS can be used to reduce DASD free space fragmentation. DFDSS (Data Facility Data Set Services) is a utility program in z/OS that provides various functions related to managing datasets and storage. It includes functions for managing free space on DASD (Direct Access Storage Device) by defragmenting free space.

Option B) Copy or move data sets from one DASD device to another or dump - DFDSS can be used to copy or move data sets from one DASD device to another or to create backups of datasets through a dump operation. These operations are commonly performed using the DFDSS utility.

Option C) Restore backup copies of entire DASD volumes - DFDSS can be used to restore backup copies of entire DASD volumes. It provides functions for backup and restore operations, allowing users to restore datasets or entire volumes from backup copies.

Option D) Increase File storage - DFDSS cannot be used to increase file storage. DFDSS primarily deals with managing datasets and storage, but it does not have the capability to increase the storage capacity of a file.

Based on the explanations above, the correct answer is D) Increase File storage. This option is incorrect because DFDSS cannot be used to increase file storage.

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