Tag: mainframe

Questions Related to mainframe

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

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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

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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

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Correct Option: C

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

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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)

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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

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Correct Option: C

A list of stored TSO commands to perform a particular function is called which of the following?
technology mainframe

  1. CLIST

  2. Compiled code

  3. Executable code

  4. Stored procedure

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Correct Option: A

Which of the following is a major difference between hierarchical and relational DBMS?
technology mainframe

  1. Type of users with access

  2. Navigational vs. non navigational

  3. Concurrent vs. non concurrent multiple program access

  4. Support for single vs. multiple application languages

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Correct Option: B

A company runs a billing application for all its divisions on a single corporate system. However, the data is separate for each division. The data sets for each division use a different high level qualifier. What must change to run the billing application for one division versus another division?
technology mainframe

  1. The JCL must be changed to use the correct dataset names.

  2. The program must be recompiled to change the DDNAMEs used.

  3. The JCL must be changed to include the correct high level qualifier in the DDNAME.

  4. The program must be recompiled in order to change the dataset names in the source code.

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Correct Option: A

Which is the utility that is used for compressing partitioned datasets?
technology mainframe

  1. IEFBR14

  2. IEBGENER

  3. IEBCOPY

  4. IDCAMS

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Correct Option: C