DEMO QUESTIONS

Q1: The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE. NLS_DATE_FORMAT is set to DD-MON-RR. Which two are true about data type conversions involving these columns in query expressions? (Choose two.)

A: CONCAT (qty_sold, invoice_date) : requires explicit conversion

B: invoice_date = '15-march-2019' : uses implicit conversion

C: invoie_date > '01-02-2019' : uses implicit conversion

D: qty_sold BETWEEN '101' AND '110' : uses implicit conversion

E: qty_sold = '0554982' uses implicit conversion

Correct Answer: B, D

Q2: Which three statements are true concerning logical and physical database structures? (Choose three.)

A: All tablespaces may have one or more data files

B: The extents of a segment must always reside in the same datafile

C: A smallfile tablespace might be bigger than a bigfile tablespace

D: A segment can span multiple data files in some tablespaces

E: A segment's blocks can be of different sizes

F: A segment might have only one extent

G: Segments can span multiple tablespaces

Correct Answer: B, C, F

Q3: Your database instance was shut down normally and then started in NOMOUNT state. You then execute this command: ALTER DATABASE MOUNT; Which two actions are performed? (Choose two.)

A: The online redo logs are opened

B: The online data files are opened

C: The alert log records the execution details

D: The Oracle background processes are started

E: The initialization parameter file is read

F: The control file is read

Correct Answer: C, F

Q4: Which two actions can you perform using DBCA for an existing database?

A: Create a template that can be used to clone the database.

B: Change the server mode from dedicated to shared, and vice versa.

C: Change the character set.

D: Create an additional listener.

E: Create nonstandard block size tablespaces.

Correct Answer: B, C

Q5: Which two queries execute successfully?

A: SELECT NULLIF(NULL, 100) FROM DUAL;

B: SELECT COALESCE (100, 'AM FROM DUAL;

C: SELECT 2TOLLIF(100, 'A') FROM DUAL;

D: SELECT NULLIF(100,100) FROM DUAL;

B: SELECT COALESCE(100, NULL, 200) FROM DUAL;

Correct Answer: E
[acf_quiz]

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