Exam (elaborations)
INTRO TO Z/OS – MAINFRAME ENVIRONMENT TEST QUESTIONS AND ANSWERS
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INTRO TO Z/OS – MAINFRAME ENVIRONMENT TEST QUESTIONS AND ANSWERS...
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INTRO TO Z/OS – MAINFRAME ENVIRONMENTTEST QUESTIONS AND ANSWERS
Application Software - ANSWER Uses OS to retrieve data, access
memory, and talk to the network as the user needs it
System Software - ANSWER Code that runs as part of the OS
generally. Cannot run application software without it
Firmware - ANSWER Written to read-only memory. Provides
a common set of methods the hardware will use
Compiler - ANSWER Takes source code and converts it to object code
so the computer can read it
Instruction Set - ANSWER What the computer's processor is capable of
doing
Auxiliary Storage - ANSWER Virtual memory; kept on DASD
DASD - ANSWER Direct Access Storage Device
Page - ANSWER 4 kilobyte chunks of memory
Frame - ANSWER Memory that is on central storage
Slot - ANSWER Memory that is on auxiliary storage
Paging - ANSWER When moving memory from a frame to a slot or vice
versa
Logical Partition (LPAR) - ANSWER Grouping the processors, memory,
I/O adapters into different systems
System Assist Processor - ANSWER Helps link the cpu and the I/O
, ZIIP (IBM z Systems Integrated Information Processor for Linux) -
ANSWER Offload work to them and enables more cost effective options
for workloads
Integrated Facility for Linux (IFL) - ANSWER processor specifically for
running Linux on the mainframe
Channel Path Identifiers (CHPIDS) - ANSWER I/O adapters in a
mainframe. Associated with a physical port location known as a Physical
Channel ID (PCHID) and a logical subsystem it is associated with. Can
be dedicated, shared, reconfigurable, or spanned
z/VM partitioning - ANSWER Type 1 hypervisor; within it you can create
1000s of virtual machines that share the resources that the host z/VM
has
APIs (application programming interfaces) - ANSWER Application
Programming Interfaces; how apps interface with the OS
OS Process Management - ANSWER 5 states:
o new: process is being created
o ready: process is waiting for pickup
o running: cpu is actively working with it
o waiting: waiting for user input or for subprocesses to finish
o terminated: task is done
Process can go back to ready during waiting or if an interrupt occurs
(CPU interrupts one process to complete another)
OS Security management - ANSWER Vital due to critical information
stored on mainframe
OS File management - ANSWER Offload as much of the work away
from app to the OS; OS tracks where files are stored and how to access
OS Communications Management - ANSWER Takes care of all
network comms
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