z/OS Concepts Flashcards
Name that acronym
PROCLIB
Procedure library
Name that acronym
SYSRES
The system residence volume.
Name that acronym
JES
Job Entry Subsystem
Name that acronym
SVC
Supervisor Call
Supervisor Call
A type of program interrupt in IBM mainframe environments that is used to request services from the operating system’s supervisor
Explain the function of ISPF
Provides full-screen, menu-based interfaces to utilities and applications
Explain the function of TSO
Used to allocate files and run programs interactively and provides an environment for developers, enabling commands to be entered at a terminal.
Explain the function of VTAM
Facilitates communication between LAN-attached devices programs and terminals
Name that acronym
VTAM
Virtual Telecommunications Access Method
Which technology made it possible for interactive programs such as TSO to communicate with terminals without having to contain special code to deal with each terminal type?
Virtual Telecommunications Access Method
What is the usual working environment for MVS programmers and operators?
Interactive System Productivity Facility (ISPF)
What is a subsystem?
A system component that functions asynchronously with other components.
What is JES
The Job Entry Subsystem
What are the two job entry subsystems available today?
JES2 and JES3
JES2
JES2 receives jobs into the system, converts them to internal format, selects them for execution, processes their output, and then purges them from the system.
JES3
Same as JES2, but also in an environment with several processing units, a global JES3 program manages all job processing with the assistance of local processors.
Name that acronym
HSM
Hierarchical Storage Manager
Name that acronym
RACF
Resource Access Control Facility
Name that acronym
SMS
Storage Management Subsystem
Name that acronym
WLM
Workload Manager
Name that acronym
JCL
Job Control Language
Job
A series of steps, each entailing the execution of a program and the creation, deletion, or modification of data.
Started Task
A task that is initiated by the system or by an operator’s START command entered at the console.
Name that acronym
STC
Started Task
Name that acronym
TSO/E
Time Sharing Option/Extensions
Time Sharing Option/Extensions
Based on TSO and is a base element of z/OS. TSO is commonly used to refer to TSO/E.
CLIST
A high-level interpretive language used to perform routine and complex programming tasks on TSO/E.
True or False
All tasks started in a z/OS system require JCL to direct the computer?
True - Without it, a job would not run.
What would the operator type in order to initiate VTAM startup?
S NET
How are VTAM and TCP/IP similar?
They both are network managers for communicating between applications, users, and hardware
How are VTAM and TCP/IP Different?
VTAM is IBM proprietary, while TCP/IP is open, non-proprietary network manager
When would an organization prefer to use TCP/IP over VTAM?
When they have non-mainframe systems.
True or False
Organizations are limited to using either VTAM or TCP/IP
False - IBM combined them into the z/OS Communication Server
Name that acronym
WLM
Workload Manager
Workload Manager
A background process that controls the way in which the resources of the processor complex are divided among the various jobs, started tasks, and TSO users.
What can be used to create workload manager components?
ISPF
What can be used to display, and in some cases, modify WLM resource use?
SDSF
Name that acronym
SDSF
System Display and Search Facility
System Display and Search Facility
ISPF application used to display SYSOUT data, issue system commands, and access JES2 facilities.
Name that acronym
SYSLOG
System Log
System Log
Used to record the communication between programs, operators, and the system.
From where can a command be typed to gain access to SYSLOG?
SDSF
What command would one type to access SYSLOG from SDSF?
LOG
