Exam (elaborations)
INTRODUCTION TO z/OS WEEK 1 EXAM QUESTIONS AND CORRECT ANSWERS
- Course
- Institution
INTRODUCTION TO z/OS WEEK 1 EXAM QUESTIONS AND CORRECT ANSWERS...
[Show more]
Content preview
INTRODUCTION TO z/OS WEEK 1EXAM QUESTIONS AND CORRECT
ANSWERS
What is z/OS? - ANSWER Designed to offer a stable, secure,
continuously available, and scalable environment for applications
running on the mainframe
z/OS gets work done by dividing it into pieces and giving portions of the
job to various system components and subsystems that function
interdependently. At any point in time, one component or another gets
control of the processor, makes its contribution, and then passes "control
along to a user program or another component
Characteristics of z/OS - ANSWER - Uses address spaces to ensure
isolation of private areas
- Ensures data integrity, regardless of how large the user population
might be.
- Can process a large number of concurrent batch jobs, with automatic
workload
balancing
- Allows security to be incorporated into applications, resources, and
user profiles.
- Allows multiple communications stacks at the same time
- Provides extensive recovery, making unplanned system restarts very
rare.
- Can avoid planned outages for maintenance with Sysplex
, - Can manage mixed workloads
- Can manage large I/O configurations of 10s of 1000s of disk drives,
automated
tape libraries, large printers, networks of terminals, etc.
- Can be controlled from one or more operator terminals, or from
application programming interfaces (APIs) that allow automation of
routine operator functions.
What is middleware? - ANSWER Middleware is typically software
between the operating system and a user or user applications. It
supplies major functions not provided by the operating system
Typical z/OS middleware - ANSWER •Database systems
•Web servers
•Message queuing and brokering functions
•Transaction managers
•Java virtual machines
•Portal services
•XML processing functions
z/OS facilities - ANSWER
Address space - ANSWER Describes the virtual storage addressing
range available to a user or program
Within each address space, the user can start multiple tasks by using
task control blocks (TCBs) that allow multiprogramming
Another way of thinking of an address space is as a programmer's map
of the virtual storage available for code and data
Physical storage - ANSWER Two types of physical storage are
available:
1. Central storage (real storage/real memory)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller luzlinkuz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79223 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now