Lead4pass C2090-558 Dumps Updated IBM C2090-558 Exam Training Material – Feb 2022

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Free IBM C2090-558 Questions, Exam Materials Share

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Question 1:

When restoring data, which granularity of the object may NOT be restored?

A. a single table

B. a single chunk

C. a single dbspace

D. an entire instance

Correct Answer: B

Question 2:

Which command would you execute to restore to a specific moment in time?

A. onbar -t timestamp

B. onbar -r -log lognum

C. onbar -r -t timestamp

D. onbar -r -l timestamp

Correct Answer: C

Question 3:

Click the Exhibit button.

C2090-558 free dumps questions 3

An administrator created a table using the SQL statement shown in the exhibit to perform a load operation every day at 11:00 AM. What is the best way to optimize a backup strategy to recover the client table in case of a failure?

A. a level-1 backup at 6:00 AM every day

B. a level-0 backup soon after the load operation

C. a level-1 backup on Sunday and continuous log backup

D. a level-2 backup at 6:00 AM every day and continuous log backup

Correct Answer: B

Question 4:

Which command option should be used to resume an interruption on bar restore?





Correct Answer: B

Question 5:

Click the Exhibit button.

C2090-558 free dumps questions 5

In the exhibit, which statement is true regarding the update statement of Client 2 if both of the clients are connected to the same logged database?

A. Client 2 will update col2 of the rows having col1=20.

B. Client 2 will return successfully without updating any rows.

C. Client 2 will keep waiting for client 1 to finish its transaction.

D. Client 2 will get an error that the “record is locked” or the “table is locked”.

Correct Answer: D

Question 6:

Under which of the following conditions does the LAST COMMITTED option have an effect on the COMMITTED READ isolation level?

A. Row-level lock

B. Page-level locking

C. RAW or unlogged tables

D. Tables containing complex data types

Correct Answer: A

Question 7:

You have a database server environment where all databases use buffered logging. In which two conditions are the logical-log buffers in shared memory flushed to the logical log on disk? (Choose two.)

A. When the buffer is full.

B. When a checkpoint occurs.

C. When a user issues a begin work.

D. When a user commits the transaction.

E. When a user rolls back the transaction.

Correct Answer: AB

Question 8:

What are two ways to create table t1 with row-level locking? (Choose two.)

A. Execute the command “create table t1 (c1 int) locking row”.

B. Execute the command “create table t1 (c1 int) lock level row”.

C. Execute the command “create table t1 (c1 int) lock mode row”.

D. Set DEF_TABLE_LOCKMODE to ROW in ONCONFIG before executing “create table t1(c1 int)”.

E. Set the environment variable DEF_TABLE_LOCKMODE to ROW before executing “create table t1(c1 int)”.

Correct Answer: CD

Question 9:

Why would you want to create a table with a lock mode row as opposed to a lock mode page?

A. to reduce disk I/O

B. to keep more information in memory for each locked row

C. to increase concurrency among multiple users on the same table

D. to reduce the number of locks when accessing rows out of the table

Correct Answer: C

Question 10:

Which isolation level is appropriate if you do not want your query to place any locks?

A. Dirty Read

B. Cursor Stability

C. Committed Read

D. Repeatable Read

Correct Answer: A

Question 11:

Which of the following is true about system catalog tables access?

A. Only user informix can read system catalog tables

B. Only system administrators can read system catalog tables

C. Only database administrators can read system catalog tables

D. Any user that can connect to the database can read system catalog tables

Correct Answer: D

Question 12:

How can you determine which databases are created in an instance?

A. use DB schema utility

B. inspect the ONCONFIG file

C. List reserved pages with on check -pr

D. run SELECT name FROM spymaster:sysdatabases

Correct Answer: D

Question 13:

You want to use SQL hosts file /new location/news hosts. Which of the following is true?

A. sqlhosts file must be called sqlhosts

B. set INFORMIXSQLHOSTS variable to /new location/sqlhosts

C. set INFORMIXSQLHOSTS variable to /new location/news hosts

D. sqlhosts file must be defined under $INFORMIXDIR/etc/ directory

Correct Answer: C

Question 14:

Which utility can be used to relocate the physical log to a new dbspace?

A. on log

B. on tape

C. on spaces

D. params

Correct Answer: D

Question 15:

What are two system-level databases? (Choose two.)

A. sys perf

B. sysadmin

C. spymaster

D. sys monitor

E. sysscheduler

Correct Answer: BC


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