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Z/OS BASICS CHAPTER 1 TEST QUESTIONS AND ANSWERS
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Z/OS BASICS CHAPTER 1 TEST QUESTIONS AND ANSWERS...
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Z/OS BASICS CHAPTER 1 TEST QUESTIONSAND ANSWERS
System/360 - ANSWER The first general-purpose computer,
was introduced in 1964.
Architecture - ANSWER Describes the organizational structure of a
system.
Platform - ANSWER A computer architecture (hardware and software).
Mainframe - ANSWER A highly secured computer system designed to
run large, mixed workloads at high levels of utilization while meeting
user-defined service level objectives.
Supports thousands of apps and I/O devices to simultaneously serve
thousands of users.
Factors Contributing to Mainframe Use - ANSWER 1) Reliability,
Availability, Serviceability
2) Security
3) Scalability
4) Continuing Compatibility
5) Evolving Architecture
6) Extensibility
7) Lower Total Cost of Ownership (TCO)
8) Environmental Friendliness
Reliability - ANSWER The system's hardware components have
extensive self-checking and self-recovery capabilities. The operating
system's Health Checker identifies potential problems before they impact
availability, or cause application outages.
Availability - ANSWER The ability to recover from the failure of a
component without impacting the rest of the running system.
DB2 & Parallel Sysplex Clusters
, Serviceability - ANSWER The system can determine why a failure
occurred. This allows for the replacement of hardware and software
elements while impacting as little of the operational system as possible.
Servers are to distributed computing as mainframes are to... - ANSWER
centralized computing
Who uses mainframes? - ANSWER Companies in banking, finance,
health care, insurance, utilities, government, etc.
Anyone who needs to host the commercial databases, transaction
servers, and applications of a business that require a greater degree of
security and availability than is commonly found on smaller-scale
machines.
Mission-critical applications - ANSWER 1) Customer Order Processing
2) Financial Transactions
3) Production and Inventory Control
4) Payroll, etc.
Why store databases on mainframes? - ANSWER Mainframes allow
concurrent database access controlled at the record level.
Mainframe duties - ANSWER 1) Large-scale transaction processing
(thousands per second).
2) Support thousands of concurrent users
3) Manage terabytes of information in databases.
4) Handle large-bandwidth communication.
Two IBM Mainframe Entries - ANSWER System z Business Class (BC)
System z Enterprise Class (EC)
System z Business Class focus - ANSWER 1) Small to midrange
enterprise computing
2) Provides for a max of up to 10 configurable PUs.
3) Granular scalability.
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