Valid Exam Questions For Oracle 1Z0-070

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Question No. 1

Which two are true about sparse griddisks and their use in disk groups on an X5 Exadata Database Machine?

Answer: A, E

A: A sparse ASM disk group is composed of sparse grid disks.

E: Sparse grid disks allocate space as new data is written to the disk, and therefore have a virtual size that can be much larger than the actual physical size. Sparse grid disks can be used to create a sparse disk group to store database files that will use a small portion of their allocated space. Sparse disk groups are especially useful for quickly and efficiently creating database snapshots on Oracle Exadata. Traditional databases can also be created using a sparse disk group.


Question No. 2

Which two Exadata X5 security features would you configure to control which databases can access which griddisks, when multiple databases share space on your storage servers in an unpartitioned storage grid?

Answer: B, E

Question No. 3

Which two statements are true about backup performance when using Recovery Manager (RMAN) on an X5 Database Machine?

Answer: D, E

D: The storage server software manages the flash cache and can recognize different types of I/O requests so that non-repeatable data access like RMAN backup I/O does not flush database blocks from the cache. It also prioritizes frequently accessed block types such as redo logs, control files, and index root blocks.

E: RMAN block change tracking allows incremental backups to run very quickly and efficiently. With block change tracking, only the areas of the database that have been modified since the last incremental backup or full backup are read from disk.

Question No. 4

Examine this list of software components:

1. Oracle Virtual Machine (OVM)

2. Oracle Enterprise Manager Agent (OMA)

3. ASM instance

4. RDBMS instance

5. Automatic Diagnostic Repository Command Interpreter (ADRCI)


7. Cell Server (CELLSRV)

8. diskmon

Identify the location where these software components can run in the standard Exadata Database Machine deployment.

Answer: B

Automatic Diagnostic Repository Command Interpreter (ADRCI) can be used on an Exadata storage server.

Question No. 5

A file contains a script with several EXACLI commands that must be executed on each cell in an X5 full rack.

The script must run on each cell simultaneously.

How would you achieve this?

Answer: C

The exadcli utility runs commands on multiple remote nodes in parallel threads.

You can issue an ExaCLI command to be run on multiple remote nodes. Remote nodes are referenced by their host name or IP address. Unlike dcli, exadcli can only execute ExaCLI commands. Other commands, for example, shell commands, cannot be executed using exadcli.


Question No. 6

Which three statements are true about the CELLCLI command?

Answer: B, D, E

The CellCLI utility supports command-line history.

Each Exadata Storage cell can be monitored, configured, and maintained using the cellcli command line interface.

The dcli utility facilitates centralized management across an Oracle Exadata Storage Server Software realm by automating the execution of CellCLI commands on a set of cells and returning the output to the centralized management location where the dcli utility was run.


Question No. 7

Your X6 Exadata Database Machine is running Oracle Database 12c, and has a large database with some very large tables supporting OLTP workloads.

High-volume insert applications and high-volume update workloads access the same tables.

You wish to compress these tables without causing unacceptable performance overheads to the OLTP workload.

Which three are true regarding this requirement?

Answer: A, B, D

A: Creating a Table with Advanced Row Compression

The following example enables advanced row compression on the table orders:


B: ARCHIVE LOW compression (Exadata only), recommended for Archival Data with Load Time as a critical factor

Question No. 8

Which two are true concerning Columnar Flash Caching?

Answer: D, E

D: In-Memory Columnar Caching on cells is enabled by default when the INMEMORY_SIZE is configured. You do not need to do anything to get this enhancement.

E: Columnar Flash Caching implements a dual format architecture in Exadata flash by automatically transforming frequently scanned Hybrid Columnar Compressed data into a pure columnar format as it is loaded into the flash cache.

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