Mainframe

What is the best definition of an address space?

A map of storage available to applications and users

Which is the best definition of a console as it pertains to Mainframe?

A user interface to a server, for example, the interface provided on a personal computer.

A z/OS catalog is:

A dataset used to store location information about other datasets

Which of the following provides the ability to allow users on multiple systems to access data sets on shared DASD volumes?

GRS

What does GDPS stand for?

Geographically Dispersed Parallel Sysplex

How would you characterize the physical size of a mainframe computer (not including its I/O (or peripheral) equipment)?

About the size of a large refrigerator

The concept of blocked data or blocking has to do with:

How data is physically arranged on a storage device

Which of the following are examples of application software?

Inventory jobs

Name the two broad categories of workload likely to be found running on a mainframe.

Batch and online transaction processing

Typical z/OS "middleware" would include:

Database software and web server software

What's the best definition of an LDAP?

Defines a standard method to access and update information in a directory.

Mainframes are most extensively used by what type of businesses?

Large corporations

Many z/OS system programmers who have worked with z/OS for a long time still refer to it using its original (old) name:

MVS

A System z technique whereby several programs appear to execute concurrently is called

Multiprogramming

In TSO/ISPF, what is the name of a data set which contains multiple members, each of which holds a sub-data set?

Partitioned data set

Which system component decides the allocation of system resources?

Resource manager

Which mainframe component syncs the time of day between multiple servers?

Server time protocol

Architecture is comprised of:

Software and hardware

What z/OS interface enables programs to use authorization services to control access to resources?

System authorization facility

Which mainframe job/role would you expect to perform software customization, capacity planning and performance tuning?

Systems programmer

Two common Z/OS units of work are:

Tasks and SRBs

The "360" in the name "System/360" is a reference to what?

The 360 degrees of a compass

The S/360 eliminated several problems that were inherent in computers that preceded it including: the inability to upgrade to a larger computer, proprietary and incompatible peripheral interfaces, and the ability to run both engineering and commercial work on the same computer.

True

The death of the mainframe has been greatly exaggerated.

True

What's the initial security request flow for a user request assuming RACF?

User request-> Resource Manager-> SAF-> RACF->RACF Database

Characteristics of an online transaction are:

Uses a small amount of input data and demands a fast (usually less than one second) response

Which z/0S component is used for managing workload distribution, workload balancing, and distributing resources to competing workloads?

Workload manager

Which two operating systems are the most prevalent operating systems running on System z mainframes?

z/OS and Linux for zSeries

What is the maximum number of z/OS images in a Parallel Sysplex environment?

32

A processor unit (PU) is an un-characterized processor in a mainframe. Which characterized processor executes commands?

CP (Central processor)

Which z/0S component manages communications between applications in a Parallel Sysplex?

Cross-system coupling facility

An enterprise is about to upgrade an older System z server to the latest technology mainframe. This enterprise has a program that was witten 20 years ago, is still in use, and the source code for the program is no longer available. What should the enterprise expect relative to the old program when the server upgrade occurs?

They should expect that the program will run without any changes

A number of non-mainframe computer systems are available today which claim to be "mainframe like" or provide the same value as mainframes.

True

Applications running on an operating system through a simplified series of interfaces is referred to as Application programming interfaces

True

What is the minimum number of LPARs in a Sysplex?

1

If a fixed block physical is 1000 bytes long and the records are recorded in blocks of 10, how long is each fixed length record (i.e. what is the logical record length)?

100 bytes

What's the most accurate definition of a Network Interface Card (NIC)?

A NIC is a computer hardware component that connects a computer to a network.

Which customer enterprises would likely be interested in the System z On/Off Capacity on Demand feature?

All of the above

What takes source code and compiles it into machine language?

Compilers

All of the data that can be read or written without moving all of the read/write heads of a disk device (DASD) is referred to as:

Cartridge

What are the three main objectives of system security?

Confidentiality, integrity, and availability

Since its introduction in 1964, the IBM mainframe has

Evolved and in many ways leads in delivering modern computing technologies

Which of these provides a common set of methods for performing functions which the operating system is going to utilize?

Firmware

What is the name of software that enables hardware on a mainframe?

LMC (Licensed machine code)

A programmer that has 40 sequential data sets. The 40 datasets collectively represent a program that will be used by a business. Which z/OS dataset type should the programmer use to the store the datasets?

One PDS

What term is used when the operating system moves data from auxiliary storage to central storage?

Paging

What is the status of the management process state when a process is waiting on the processor to handle the requests?

Ready

The z/OS acronym RAS stands for

Reliability, Availability, and Serviceability

Two distinguishing characteristics of mainframe computing are:

Secure and highly available

A System z technique that allows multiple simultaneous operations of two or more programs under the control of one copy of z/OS is called

SMP (symmetric multiprocessing)

What does VSAM stand for?

Virtual Storage Access Method