1z0-1093-25 Practice Questions

A.  

NoSQL databases universally lack the ability to represent relationships between data elements.

B.  

Relational databases primarily rely on foreign keys to define relationships, while NoSQL databases often embed related data within a single document or use application-level links.

C.  

NoSQL databases exclusively use foreign keys to establish relationships, similar to relational database models.

D.  

Relational databases offer no mechanism for defining relationships between different data sets.

A.  

You only need a VCN and Universal Cloud Credits.

B.  

You need to define the VCN, Private Client subnet, and Service Backup subnet.

C.  

You need to define the VCN, Private Client subnet, and Private Backup subnet.

D.  

There are no prerequisites for creating an Exadata Database Service instance.

E.  

You need to create an Exadata Infrastructure and VM Cluster resource.

A.  

Direct SSH access to the Exadata Infrastructure compute nodes is permitted for customers with root privileges.

B.  

Management of the Exadata Infrastructure is primarily performed through the Oracle Cloud Infrastructure (OCI) console and APIs.

C.  

The dbcli utility, used for database administration on VM DB Systems, can also be used to manage the Exadata Infrastructure.

D.  

Customers have direct access to the Exadata storage cells, allowing them to modify storage configurations.

E.  

Exadata Infrastructure management is solely managed by Oracle and is not directly accessible to customers.

A.  

Manually downloading and applying patches to each individual component.

B.  

Utilizing the automated patching capabilities provided by the Oracle Cloud Infrastructure (OCI) console or API.

C.  

Relying on the default OS auto-update features to handle all necessary patching.

D.  

Only patching the database nodes and ignoring the storage servers unless a specific issue arises.

A.  

Oracle Data Guard

B.  

Exadata Smart Scan

C.  

Oracle Active Data Guard

D.  

Exadata Smart Flash Cache

A.  

OCI Vault for auditing query execution.

B.  

OCI Events for tracking query start and end times.

C.  

MySQL Slow Query Log and OCI Logging Analytics.

D.  

OCI Network Visualizer for analyzing network latency.

E.  

OCI Bastion for secure access to the query execution environment.

A.  

Data is organized into tables with predefined schemas, similar to relational databases.

B.  

Data is stored as JSON documents with flexible structures, allowing for nested elements.

C.  

Each data item is uniquely identified by a key, and the associated value can be any data type or structure.

D.  

Relationships between data items are explicitly defined through foreign keys and joins.

E.  

Data is structured in a graph format, representing entities as nodes and relationships as edges.

A.  

Using mysqldump to create a logical backup and restoring it to the HeatWave instance.

B.  

Creating a physical backup using MySQL Enterprise Backup and restoring it to the HeatWave instance.

C.  

Utilizing MySQL replication to replicate data to the HeatWave instance and then performing a switchover.

D.  

Copying the data files directly from the source instance to the HeatWave instance.

E.  

Using a third-party ETL tool to extract, transform, and load the data into the HeatWave instance.

A.  

Manually copying the data files from the HeatWave cluster's storage.

B.  

Using the OCI Object Storage service for storing manual database dumps.

C.  

Utilizing OCI Database backups, which include both the MySQL Database System and the HeatWave cluster.

D.  

Relying solely on MySQL replication to another MySQL instance.

E.  

Using the MySQL Enterprise Backup tool directly on the HeatWave nodes.

A.  

Customers are responsible for configuring host-based firewalls on the Exadata Infrastructure to protect against unauthorized access.

B.  

Network Security Groups (NSGs) can be used to control network traffic to and from VM Clusters, enhancing security.

C.  

Oracle manages all security aspects of the Exadata Infrastructure, relieving customers of any security responsibilities.

D.  

Customers have full access to the Exadata Infrastructure's hypervisor and can implement custom security policies.

E.  

Customers are responsible for configuring and maintaining the security of the operating system and database software within the VM Clusters.