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認定する1z0-1093-25的中合格問題集 &合格スムーズ1z0-1093-25リンクグローバル |効率的な1z0-1093-25日本語問題集

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>> 1z0-1093-25的中合格問題集 <<

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Oracle Cloud Database Services 2025 Professional 認定 1z0-1093-25 試験問題 (Q44-Q49):

質問 # 44
During the provisioning of a Base Database Service (BaseDB) virtual machine (VM), what is the significance of the "Compute Shape" selection?

A. It determines the maximum number of databases that can be created on the VM.
B. It specifies the pre-installed database software version.
C. It defines the CPU, memory, and network bandwidth allocated to the VM.
D. It dictates the availability domain in which the VM will be created.

正解：C

解説：
C: Defines CPU, memory, and network bandwidth:
* TheCompute Shapespecifies the resources allocated to the VM.
* Shapes vary in the number ofOCPUs, amount ofRAM, andnetwork performance.
* Selecting an appropriate shape ensures the database has enough computational power and memory to meet workload demands.
Why the other options are incorrect:
* A. Number of databases:Limited by storage and resource capacity, not the shape itself.
* B. Availability domain:Chosen separately during provisioning.
* D. Pre-installed software version:The shape does not determine the database version.

質問 # 45
What primary security mechanism within Oracle NoSQL Database Cloud Service governs access to individual tables, dictating which users or groups can perform specific actions?

A. Identity and Access Management (IAM) policies
B. Transparent Data Encryption (TDE)
C. Database Vault
D. Virtual Cloud Network (VCN) security lists

正解：A

解説：
IAM Policies:
Oracle NoSQL Database Cloud Service usesOCI IAM policiesto control access to tables. These policies specify who (user or group) can perform what actions (read, write, delete) on specific database resources. This centralized approach allows for granular permission control, supporting the principle ofleast privilege.
IAM policies are configured at theOCI tenancy leveland can be customized to define access based onusers, groups, and dynamic groups. They are essential for maintaining secure data access, especially in multi- tenant environments.
Why the other options are incorrect:
* A:VCN security lists control network traffic, not table-level access.
* C:Database Vault is for fine-grained access control within traditional Oracle Databases, not NoSQL.
* D:TDE handles data encryption, not access management.

質問 # 46
Which statement accurately describes the inherent trade-offs often associated with choosing a NoSQL database over a traditional relational database?

A. NoSQL databases universally guarantee stronger data consistency than relational databases, but at the expense of increased operational complexity.
B. NoSQL databases provide simplified querying capabilities using standard SQL, enhancing developer productivity and reducing the learning curve.
C. NoSQL databases typically sacrifice strict data consistency (ACID) to gain horizontal scalability and higher availability.
D. NoSQL databases offer superior data integrity and reduced operational overhead compared to relational databases, making them ideal for transactional systems.

正解：C

解説：
Trade-offs with NoSQL Databases:
NoSQL databases are designed toscale horizontallyby adding more nodes rather than scaling vertically by increasing hardware capacity. To achieve this scalability andhigh availability, NoSQL systems often adopt theBASE model(Basically Available, Soft state, Eventually consistent) rather than the strictACID model (Atomicity, Consistency, Isolation, Durability) typical of relational databases.
* This means thatdata consistencymay be relaxed (eventual consistency) to allow faster reads and writes.
* These characteristics make NoSQL suitable forlarge-scale, distributed systemsbut less ideal for applications requiringimmediate consistency, such as banking systems.
Why the other options are incorrect:
* A:NoSQL does not guarantee stronger consistency than relational databases.
* C:NoSQL typically does not offer superior data integrity for transactional workloads.
* D:SQL-based querying is usually not available in NoSQL, as they often have their own query mechanisms.

質問 # 47
Which two of the following options are valid statements regarding the management of the operating system on a Base Database Service Virtual Machine DB System?

A. Oracle manages the underlying operating system patching and updates, ensuring the system remains secure and compliant.
B. Customers have full root access to the underlying operating system of the Virtual Machine DB System, allowing for customization and installation of custom software.
C. Direct SSH access to the underlying VM is restricted, and all OS-level operations must be performed through the Web Console.
D. Customers are responsible for the initial OS installation, but then patching is controlled entirely by Oracle.
E. Customers are responsible for the security and maintenance of the operating system, including applying necessary patches and updates.

正解：B、E

解説：
B: Full root access:
* Customers have root-level access to manage the OS, install custom software, and configure settings.
* This provides flexibility to meet specific application requirements.
D: Responsibility for OS security:
* With root access, customers must manage OS security, including updates and patches.
* Oracle provides tools to facilitate patching, but the responsibility lies with the customer.
Why the other options are incorrect:
* A. Restricted SSH access:SSH access is allowed for VM DB systems.
* C. Oracle-managed OS patching:Oracle does not automatically patch the OS; this is a customer responsibility.
* E. Initial OS installation by customers:The OS is pre-installed, but ongoing maintenance is customer- driven.

質問 # 48
When provisioning an Oracle Cloud Infrastructure (OCI) Base Database Service (BaseDB) on a virtual machine (VM), what is a primary factor that distinguishes it from using a Bare Metal database service?

A. The ability to create multiple database homes on a single server.
B. The database software binaries are always pre-installed.
C. The ability to choose your own hypervisor for virtualization.
D. The underlying hardware is dedicated solely to your instance.

正解：D

解説：
Primary Distinction:
The primary difference betweenBaseDB on a VMandBare Metalis how the underlying hardware is allocated:
* BaseDB on VM:The infrastructure issharedamong multiple tenants, using virtualization to isolate instances.
* Bare Metal Database Service:The server'sphysical hardware is dedicatedexclusively to a single tenant, offeringmaximum performance and isolation.
* This exclusive access to hardware in Bare Metal allows forbetter performanceand control compared to VM-based instances.
Why the other options are incorrect:
* A:Binaries are not always pre-installed in both cases; it depends on the configuration.
* B:Oracle handles hypervisor configuration, not the user.
* D:Both VM and Bare Metal allow multiple database homes if configured properly.

質問 # 49
......

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