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mainframe Online Quiz - 96

Description: mainframe Online Quiz - 96
Number of Questions: 20
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What is this and how can it be executed?

technology mainframe

  1. It's a JCL procedure and cannot be executed

  2. It's a job and may be submitted with a SUBMIT command.

  3. It's a JCL procedure and can be executed with a submit command.

  4. It's a JCL procedure and must be invoked in a job with an EXEC statement.

Show answer
Correct Option: D

Which of the following z/OS data set organization is most like a UNIX directory?

technology mainframe

  1. VSAM RRDS

  2. Sequential data set

  3. Partitioned data set

  4. VSAM Indexed data set

Show answer
Correct Option: C
Explanation:

To solve this question, the user needs to have an understanding of z/OS data set organizations and their similarities to other file systems. Specifically, the user needs to know what a UNIX directory is and which z/OS data set organization is most similar to it.

A UNIX directory is a file system structure that stores files and other directories. It uses a hierarchical structure with a single root directory, and each directory can contain other directories or files. The directories are organized in a tree-like structure, with the root directory at the top and the leaves at the bottom.

Now, let's go through each option and explain why it is right or wrong:

A. VSAM RRDS: This option is not correct. VSAM RRDS (Relative Record Data Set) is a type of VSAM data set that organizes data into fixed-length records. It is not organized like a UNIX directory.

B. Sequential data set: This option is not correct. A sequential data set is a type of z/OS data set that contains records in sequential order. It is not organized like a UNIX directory.

C. Partitioned data set: This option is correct. A partitioned data set (PDS) is a type of z/OS data set that can contain multiple members, each of which is like a separate file. The PDS structure is similar to a UNIX directory, with the members being like files and the PDS itself being like a directory.

D. VSAM Indexed data set: This option is not correct. A VSAM Indexed data set is a type of VSAM data set that organizes data using a key and index. It is not organized like a UNIX directory.

Therefore, the correct answer is:

The Answer is: C

Which of the following are the types of EDIT commands?

technology mainframe

  1. Menu and Line

  2. Line and Data

  3. Primary and Line

  4. Primary and Secondary

Show answer
Correct Option: C

What is this and how can it be executed?

technology mainframe

  1. It's a JCL procedure and cannot be executed.

  2. It's a job and may be submitted with a SUBMIT command.

  3. It's a JCL procedure and can be executed with a submit command.

  4. It's a JCL procedure and must be invoked in a job with an EXEC statement.

Show answer
Correct Option: D

In the ISPF Edit panel, there are fields named PROJECT, GROUP, TYPE, and MEMBER. What information do these fields specify?

technology mainframe

  1. DSNAME

  2. DDNAME

  3. PARM field

  4. DD Statement

Show answer
Correct Option: A

AI Explanation

To answer this question, let's go through each option and understand what information these fields specify:

Option A) DSNAME - This option is the correct answer. In the ISPF Edit panel, the PROJECT, GROUP, TYPE, and MEMBER fields specify the DSNAME (data set name) of the dataset or member you want to edit.

Option B) DDNAME - This option is incorrect. The DDNAME field is used in JCL (Job Control Language) to identify a specific DD (data definition) statement.

Option C) PARM field - This option is incorrect. The PARM field is used in JCL to pass parameters to a program or utility.

Option D) DD Statement - This option is incorrect. The DD Statement is a JCL statement used to define the input, output, or control data sets for a job step.

The correct answer is Option A) DSNAME. This option is correct because the PROJECT, GROUP, TYPE, and MEMBER fields in the ISPF Edit panel specify the DSNAME (data set name) of the dataset or member you want to edit.

Which of the following describes relative access speed for z9 major storage types?

technology mainframe

  1. Tape is faster than DASD

  2. DASD is faster than cache

  3. Real memory is faster than DASD

  4. Optical storage is faster than cache

Show answer
Correct Option: C

Which of the following are the types of EDIT commands?

technology mainframe

  1. Menu and Line

  2. Line and Data

  3. Primary and Line

  4. Primary and Secondary

Show answer
Correct Option: C

Which of the following z/OS data set organization is most like a UNIX directory?

technology mainframe

  1. VSAM RRDS

  2. Sequential data set

  3. Partitioned data set

  4. VSAM Indexed data set

Show answer
Correct Option: C

If a userid is ZTEST1, then what is entered in the Data Set List Utility (generally option 3.4) for "Dsname Level" to list all data sets with the high level qualifier of the userid?

technology mainframe

  1. ZTEST1

  2. "ZTEST1"

  3. .ZTEST1

  4. 'ZTEST1*'

Show answer
Correct Option: A

AI Explanation

To answer this question, we need to understand how the "Dsname Level" works in the Data Set List Utility.

The "Dsname Level" is used to specify the high-level qualifier of the dataset that you want to list. In this case, we want to list all datasets with the high-level qualifier of the userid "ZTEST1".

Option A) ZTEST1 - This option is correct. By entering "ZTEST1" in the "Dsname Level" field, you are specifying the high-level qualifier as "ZTEST1", which will list all datasets with that high-level qualifier.

Option B) "ZTEST1" - This option is incorrect. The double quotes around "ZTEST1" are not necessary and will not work in the "Dsname Level" field.

Option C) .ZTEST1 - This option is incorrect. The asterisks (*) are used as wildcards in dataset names, but they should not be used in the "Dsname Level" field. They can be used to specify patterns for the dataset name, but not for the high-level qualifier.

Option D) 'ZTEST1*' - This option is incorrect. The single quotes around 'ZTEST1*' are not necessary and will not work in the "Dsname Level" field.

Therefore, the correct answer is A) ZTEST1.

PC keyboards do not have a "PA1" key, 3270 emulators map some keys to "PA1". What is the "PA1" key used for in TSO and ISPF?

technology mainframe

  1. Terminate the program currently running.

  2. Terminate ISPF to return to the TSO READY prompt.

  3. Pause a program so that data will not continue to scroll.

  4. Clear the screen to allow the next screen of data to display.

Show answer
Correct Option: A

The syntax: //INPUT DD * is used for what purpose?

technology mainframe

  1. To specify that this DDNAME refers to a null dataset

  2. To specify that this DDNAME refers to the same dataset as the prior DD statement

  3. To specify that the data is contained in the JCL stream immediately after this DD statement

  4. To specify that the DDNAME refers to the same dataset as the DD statement with DDNAME of INPUT in the prior job step

Show answer
Correct Option: C

What is the relationship of the Layered Network Models of TCP/IP, OSI, and SNA?

technology mainframe

  1. SNA is an internal construction in z/OS and does not allow for end points.

  2. They are the same except that the OSI model inverts the layers top to bottom.

  3. They have the same layers with the exact same functions in each layer, but the names are different.

  4. The layers are conceptually similar but differ in name and details of what functions are in which layers.

Show answer
Correct Option: D

A mainframe customer wants to add a web site for customer orders. They plan to tightly couple the web site to their existing back office z/OS applications. Which of the following describes an effective implementation?

technology mainframe

  1. Bring in another System z machine

  2. Implement a firewall on the mainframe and use WebSphere to enable the web site on a Linux server.

  3. Implement a firewall on a new, small Unix server and use WebSphere to enable the web site on the mainframe

  4. Implement a firewall on a new Windows XP server and use WebSphere to enable the web site on a new Windows XP server.

Show answer
Correct Option: C

If a data set with text information is created using ISPF edit, the dataset is copied to magnetic tape, and the magnetic tape is then copied to a PC (e.g. Windows), what will a user see who displays the file on the PC?

technology mainframe

  1. Clear text, but with punctuation corrupted

  2. The exact same text as seen in ISPF on the mainframe

  3. An odd mixture of unintelligible and unprintable characters

  4. The results of the encryption used in every mainframe data set

Show answer
Correct Option: C

What is the facility that allows mainframes to be partitioned into LPARs?

technology mainframe

  1. z/OS

  2. PR/SM

  3. Virtual Storage

  4. Coupling Facility

Show answer
Correct Option: B
Explanation:

To answer this question, the user needs to have knowledge about mainframe hardware and operating systems.

The facility that allows mainframes to be partitioned into LPARs (Logical Partitions) is PR/SM (Processor Resource/Systems Manager).

Option A: z/OS is an operating system used on IBM mainframes. While it provides a range of services for running applications on mainframes, it is not the facility that allows for LPAR partitioning.

Option B: PR/SM is the correct answer. It is a firmware that provides the ability to create LPARs, which are virtualized instances of a mainframe that allow multiple operating systems to run concurrently on a single physical machine.

Option C: Virtual Storage is a feature of the z/OS operating system that provides virtual memory management. It is not the facility that allows for LPAR partitioning.

Option D: Coupling Facility is a hardware component used in parallel sysplex configurations to provide high-speed communications and data sharing between multiple mainframes. It is not the facility that allows for LPAR partitioning.

Therefore, the answer is:

The Answer is: B. PR/SM

In UNIX, the thread is the smallest element that performs work. What is an equivalent in z/OS?

technology mainframe

  1. Task

  2. Daemon

  3. TASKLIB

  4. Process

Show answer
Correct Option: A
Explanation:

To answer this question, the user needs to know about the basic concepts of operating systems and the difference between UNIX and z/OS.

In z/OS, the equivalent of a thread in UNIX is a task. Therefore, option A is the correct answer.

Here is an explanation of each option:

A. Task: This is the correct answer. A task in z/OS is equivalent to a thread in UNIX. It is the smallest unit of work that is scheduled and dispatched by the operating system.

B. Daemon: A daemon is a type of background process that runs continuously, waiting to perform a specific task or respond to requests. It is not equivalent to a thread in UNIX.

C. TASKLIB: TASKLIB is a library that contains the source code for a task. It is not equivalent to a thread in UNIX.

D. Process: A process is a program in execution, along with all the resources it needs to execute. It is not equivalent to a thread in UNIX.

Therefore, the answer is: A. Task.

What master catalog entry relates to the name of a user catalog?

technology mainframe

  1. HLQ

  2. VVDS

  3. ALIAS

  4. Alternate index

Show answer
Correct Option: C

AI Explanation

To answer this question, you need to understand the concept of master catalog and user catalog.

In a mainframe environment, the master catalog contains information about all the datasets and catalogs in the system. A user catalog, on the other hand, is a catalog created by a specific user to organize their datasets.

The master catalog entry that relates to the name of a user catalog is called an "ALIAS" entry.

Option A) HLQ - This option is incorrect because HLQ stands for High-Level Qualifier, which is a naming convention used to group related datasets together.

Option B) VVDS - This option is incorrect. VVDS stands for Virtual Volume Data Set, which is used to store information about virtual volumes.

Option C) ALIAS - This option is correct. An ALIAS entry in the master catalog is used to associate a user catalog name with the actual catalog dataset.

Option D) Alternate index - This option is incorrect. An alternate index is a type of index used in VSAM datasets.

The correct answer is C) ALIAS. This option is correct because an ALIAS entry is used to relate the name of a user catalog in the master catalog.

ISPF uses various function keys. Which of the following describes the mapping of these keys?

technology mainframe

  1. Different in every ISPF menu

  2. Determined by operating system

  3. Fixed by ISPF and cannot be changed

  4. May be changed using the ISPF SETTINGS function

Show answer
Correct Option: D

Storage protect keys protect storage in conjunction with what other feature on the mainframe?

technology mainframe

  1. LPAR (Logical Partition)

  2. ASM (Auxiliary Storage Manager)

  3. APF (Authorized Program Facility)

  4. PR/SM (Processor Resource / System Manager)

Show answer
Correct Option: C

Which of the following could be used to automatically establish communication between the operating system and primary job entry subsystem during IPL?

technology mainframe

  1. JES

  2. IODF

  3. Master JCL procedure

  4. Communications Server

Show answer
Correct Option: C

AI Explanation

To answer this question, you need to understand the concept of Initial Program Load (IPL) and the components involved in establishing communication between the operating system and the primary job entry subsystem during IPL.

During IPL, the operating system needs to establish communication with the primary job entry subsystem to perform various tasks, such as loading system programs and initializing devices. The component that facilitates this communication is called the Master Job Control Language (JCL) procedure.

Option A) JES - JES stands for Job Entry Subsystem and is responsible for managing job processing in an operating system. While JES is involved in job processing, it is not directly responsible for establishing communication between the operating system and the primary job entry subsystem during IPL. Therefore, this option is incorrect.

Option B) IODF - IODF stands for Input/Output Definition File and is used to define and configure devices in an operating system. While IODF is involved in device configuration, it is not directly responsible for establishing communication during IPL. Therefore, this option is incorrect.

Option C) Master JCL procedure - This option is correct. The Master JCL procedure is a set of instructions written in JCL that is executed during IPL to establish communication between the operating system and the primary job entry subsystem. It includes instructions for loading system programs, initializing devices, and configuring system settings.

Option D) Communications Server - While a Communications Server may be used to establish communication between different systems or components, it is not specifically used to establish communication between the operating system and the primary job entry subsystem during IPL. Therefore, this option is incorrect.

The correct answer is C) Master JCL procedure. This option is correct because the Master JCL procedure is specifically designed to establish communication between the operating system and the primary job entry subsystem during IPL.

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