Basic architecture and fundamental mechanisms

Question 1

System IPL Initialization process begins when

Answer 1

The system programmer or operator selects the LOAD function at the Hardware Management Console (HMC)

Question 2

Hardware Management Console (HMC)

Answer 2

Hardware appliance that you can use to configure and control one or more managed systems. Used to create LPARs and activate Capacity Upgrade on Demand.

Question 3

What information supplied to successfully IPL z/OS?

Answer 3

• Device address of the IPL volume
• LOADxx member that contains pointers to the system parms
• The IODF dataset that contains the configuration information.
• Device address of the IODF volume

Question 4

IODF volume

Answer 4

Defines the configuration to the system that is selected and used.

Question 5

Logon CLIST procedure

Answer 5

1. Make DB2 Load Modules available to TSO
2. Concatenate SDSNCLST to SYSPROC
3. Make Panels and Messages available to ISPF and TSO
4. Make skeleton library available to TSO
5. Make table library available to TSO

Question 6

SYSPROC

Answer 6

Pointer to the PDS library where CLISTS are stored.

Question 7

CLISTs

Answer 7

TSO command scripts; each CLIST executed TSO/E commands in sequence. Essentially batch files for different operations on the mainframe.

Question 8

Skeleton files

Answer 8

Template files containing basic structure, primarily used for generating customized output like JCL scripts.

Question 9

DB2 cannot start unless the system services address space ssidMSTR is able to allocate the

Answer 9

DB2 Boostrap Data Sets and all the active log data sets.

Question 10

What isn’t a requirement for DBM1 to start up but will attempt to do so anyways?

Answer 10

Catalog and Directory

Question 11

A DB2 is composed of the following address spaces:

Answer 11

• MSTR (System Services)
• DBM1 (Database Services)
• IRLM (Internal Resource Lock)
• DDF (Distributed Data Facility) or DIST
• One or more WLM-established Stored Procedure address spaces
• Administrative Task Scheduler (ADMT)

Question 12

Is MSTR address space mandatory or optional?

Answer 12

Mandatory

Question 13

Is DBM1 address space mandatory or optional?

Answer 13

Mandatory

Question 14

Is IRLM address space mandatory or optional?

Answer 14

Mandatory

Question 15

Is DDF address space mandatory or optional?

Answer 15

Optional

Question 16

WLM

Answer 16

Workload Manager (component of z/OS)

Question 17

What are the two main DB2 address spaces?

Answer 17

MSTR and DBM1

Question 18

What is an important criterion for Db2 to run efficiently?

Answer 18

That you provide sufficient region size for each address space

Question 19

Applications are said to run in

Answer 19

allied address spaces

Question 20

DBM1 storage areas above the 2 GB includes

Answer 20

• Bufferpools
• Bufferpool control blocks
• RID pool
• Compression dictionaries
• EDM Pool: DBDs, OBDs
• Dynamic statement cache
• Castout buffers
• Sort pool

Question 21

What address spaces are 31 bit?

Answer 21

Only MSTR

Question 22

What address spaces are 64 bit?

Answer 22

DBM1, DDF, and IRLM

Question 23

What else is 31 bit?

Answer 23

User programs as well as stored procedures.

Question 24

IRLM can manage up to

Answer 24

100 million locks

Question 25

NUMLKTS

Answer 25

Maximum number of locks per table space before lock escalation occurs

Question 26

NUMLKUS

Answer 26

Number of locks per user before a resource unavailable occurs

Question 27

MLMT

Answer 27

Parameter for max storage for locks

Question 28

PGPROT

Answer 28

Page protect - specifies whether IRLM loads its modules that reside in common storage into page-protected storage to prevent programs from overlaying the instructions.