1Z0-1085-26 Getting Started With Oci Practice Test 3 — 15 Questions

Question 1

What is the primary purpose of OCI Fault Domains within an Availability Domain?

Accepted Answer

To provide fault tolerance against hardware and power failures within an Availability Domain.. Fault domains are groupings of hardware within a single availability domain, each with independent power and cooling. Their purpose is to let you distribute instances so that a hardware or power failure in one fault domain does not take down all copies of your workload. They are not network-isolation constructs, billing constructs, or geographic-boundary constructs — those map to VCNs, compartments/tags, and regions respectively.

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To isolate network traffic between different virtual cloud networks (VCNs).

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To segregate billing and cost-management data across different departments.

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To define geographic boundaries for global data residency compliance.

Question 2

What is an OCI Region?

Accepted Answer

A localized geographic area that contains one or more availability domains.. An OCI region is a localized geographic area containing one or more availability domains.

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A security boundary used to manage user permissions and access control.

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A virtual machine image template used to launch compute instances.

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A physical server rack installed in a customer's private office.

Question 3

When designing a highly available architecture in OCI, why is it recommended to deploy application tiers across multiple Availability Domains or Fault Domains?

Accepted Answer

To prevent a single hardware or facility failure from disrupting the entire application workload.. Spreading application tiers across multiple availability domains or fault domains ensures that a failure at the hardware, rack, or data-center level only impacts a subset of instances, keeping the application available. This is the fundamental principle of fault-tolerant design in OCI: eliminate single points of failure by distributing workloads across independent failure domains. The other options describe benefits unrelated to HA — CPU speed, data transfer cost, and legal compliance are not what multi-AD/FD placement achieves.

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To increase the processing speed of CPU instructions.

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To reduce data transfer costs between cloud regions.

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To satisfy legal requirements for cross-border data transfer.

Question 4

Your company operates a critical application in OCI. To protect against potential outages, you are reviewing your disaster recovery posture across regions. Which of the following statements regarding OCI regions is accurate?

Accepted Answer

OCI regions are completely independent of one another, sharing no common points of failure, ensuring high availability and fault isolation.. OCI regions are designed to be completely independent, meaning an outage in one region does not impact another region.

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An outage in one OCI region automatically triggers a failover to the nearest secondary region.

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All OCI regions must contain exactly three Availability Domains.

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OCI regions share common control planes to synchronize global configurations in real-time.

Question 5

An architect needs to explain OCI's distributed cloud model to a board of directors. The board is confused about the difference between OCI Dedicated Region and OCI Cloud@Customer. Which distinction is accurate?

Accepted Answer

Dedicated Region provides the complete set of OCI public cloud services on-premises, while Cloud@Customer delivers specific OCI services (such as Exadata and Compute infrastructure) on-premises.. Dedicated Region brings the entire public cloud stack on-premises, while Cloud@Customer brings specific services (like databases and core infrastructure).

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Dedicated Region is managed entirely by the customer, whereas Cloud@Customer is managed by Oracle administrators remotely.

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Cloud@Customer requires internet access to function, whereas Dedicated Region operates entirely without power redundancy.

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Dedicated Region is hosted by Oracle in a public facility, whereas Cloud@Customer is hosted in a partner data center.

Question 6

You are configuring disaster recovery for an Oracle Database running in OCI. You choose to replicate your database to a standby instance in a different OCI region. How does OCI's distributed cloud architecture support this cross-region replication?

Accepted Answer

By leveraging OCI's high-speed private global network backbone to securely transfer data between regions without traversing the public internet.. OCI's private global network connects regions, facilitating secure and reliable cross-region replication.

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By routing all replication traffic through the public internet using Oracle-managed VPNs.

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By synchronizing block storage volumes directly across regions using shared physical disk arrays.

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By requiring the database to be exported to Object Storage and downloaded manually in the target region.

Question 7

Your organization is launching a global e-commerce platform. Users will access the platform from North America, Europe, and Asia. To minimize latency for these users, what is the best practice approach for deploying resources on OCI?

Accepted Answer

Deploy regional instances in multiple OCI regions corresponding to your user geographic distribution and use OCI Traffic Management to route users to the closest region.. To minimize latency for a globally distributed user base, resources must be placed physically close to those users. Deploying regional instances in multiple OCI regions aligned with user geography, combined with OCI Traffic Management steering policies (such as geolocation or latency-based routing), ensures users are served from the nearest healthy region. This is the standard OCI multi-region architecture pattern for global applications.

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Deploy all database instances in North America and application servers in Europe to balance workloads.

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Deploy all resources in a single central region and use a Content Delivery Network (CDN) for static assets only.

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Deploy instances across multiple Fault Domains in a single Availability Domain to handle global traffic.

Question 8

An enterprise customer has a strict regulatory requirement that their database backups must be stored in a geographically distinct location at least 500 miles away from their primary data center, without utilizing the public internet. How can this be accomplished using OCI architecture?

Accepted Answer

Configure cross-region bucket replication from the primary OCI region to a secondary OCI region, utilizing Oracle's private network backbone.. OCI cross-region bucket replication copies objects between buckets in different OCI regions over Oracle's private backbone, never traversing the public internet. Because OCI regions are geographically separated (typically hundreds of miles apart), this satisfies both the distance and the no-public-internet requirements. It's the only option that meets both constraints simultaneously.

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Store backups in multiple Fault Domains within the same Availability Domain.

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Export backups via OCI CLI and transfer them manually using external hard drives shipped via courier.

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Upload backups to a public cloud storage bucket over an encrypted IPsec VPN tunnel spanning the public internet.

Question 9

Which of the following best describes the isolation level between OCI Availability Domains within the same region?

Accepted Answer

They are completely isolated from each other with independent power, cooling, and physical security, while being connected by a low-latency network.. OCI Availability Domains (ADs) within a region are designed as physically separate data centers with independent power, cooling, and physical security infrastructure, so a failure in one AD (power outage, fire, flood) cannot cascade to another. Despite this physical isolation, ADs are interconnected via a dedicated low-latency, high-bandwidth network that enables synchronous replication and cross-AD failover for services like Block Volume, Object Storage, and Exadata. This combination of fault isolation plus low-latency interconnect is what allows OCI to offer 99.95%+ SLAs and support multi-AD HA architectures within a single region.

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They are located in different countries to ensure compliance with international tax laws.

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They share physical power supplies and network switches to reduce operational costs.

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They operate as independent public clouds with separate IAM user directories.

Question 10

Your development team is deploying a new service and wants to ensure that a scheduled hypervisor maintenance event on a physical host does not take down all instances of the service. How does OCI handle hypervisor maintenance across Fault Domains?

Accepted Answer

OCI applies maintenance updates to one Fault Domain at a time, allowing instances in other Fault Domains to continue operating uninterrupted.. OCI performs maintenance on one fault domain at a time, allowing instances in other fault domains to remain running.

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OCI restarts all instances across all Fault Domains simultaneously during off-peak hours.

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OCI sends an alert and requires the administrator to manually shut down instances before maintenance can begin.

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OCI automatically live-migrates all instances to another region while maintenance is performed.

Question 11

An organization is building a hybrid cloud strategy and evaluates OCI's cloud models. They want to run Oracle Database workloads on Exadata infrastructure inside their own data center, managed through the OCI console, with infrastructure maintenance performed by Oracle. Which service matches this requirement?

Accepted Answer

OCI Exadata Cloud@Customer. Exadata Cloud@Customer provides Oracle Database on Exadata infrastructure installed on-premises and managed via the OCI console.

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Oracle Database Appliance (ODA) on-premises with manual cloud sync.

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Oracle Autonomous Database on Dedicated Exadata Infrastructure

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OCI Dedicated Region

Question 12

Which TWO statements accurately describe the characteristics of OCI Availability Domains and Fault Domains? (Choose two.)

Accepted Answer

A region can contain one or more Availability Domains.. Option C is correct because an OCI region is composed of one or more Availability Domains (ADs), which are isolated, fault-tolerant data center groupings within that region; some regions have a single AD while others have three. Option D is correct because Fault Domains (FDs) are isolated hardware and power groupings within a single Availability Domain, and OCI provides three FDs per AD to enable anti-affinity placement of instances. Option A is incorrect because Availability Domains do not span multiple global regions; they are contained within a single region, and it is regions that are geographically distributed. Option B is incorrect because Availability Domains are deliberately isolated from one another with independent power, cooling, and network infrastructure to maximize fault tolerance, not to share physical power infrastructure. Option E is incorrect because Fault Domains are physical hardware and power isolation groupings confined within one Availability Domain, not software-defined constructs that span across different ADs.

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Availability domains span across multiple global regions to provide high availability.

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Availability domains share physical power infrastructure to minimize data center costs.

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Fault domains are software-defined constructs that exist across different availability domains.

Question 13

What is a key benefit of OCI's multi-region architecture for enterprise disaster recovery?

Accepted Answer

It allows organizations to deploy workloads across geographically disparate regions to protect against large-scale regional disasters.. Multi-region architecture enables disaster recovery by placing backup infrastructure in a geographically separate region.

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It eliminates the need for data backups by synchronizing all data locally across fault domains.

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It ensures that all regions share the same physical power grid to reduce energy consumption.

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It allows developers to bypass IAM security policies when migrating data between regions.

Question 14

An enterprise architect is designing a highly available and resilient web application in OCI. Which THREE strategies should be implemented to ensure maximum uptime and fault isolation? (Choose three.)

Accepted Answer

Configure OCI Traffic Management to automatically route client requests away from an impaired region.. High resilience involves multi-AD/FD placement, cross-region disaster recovery, and automated traffic management.

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Rely solely on single-instance virtual machines with automatic daily backups instead of multi-node clustering.

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Deploy all database and application instances in a single Fault Domain to optimize network latency.

Question 15

Which TWO of the following are core tenets of the OCI distributed cloud model? (Choose two.)

Accepted Answer

Offering flexible deployment options including public cloud, dedicated regions, and hybrid cloud solutions.. Option B is correct because the OCI distributed cloud model is defined by flexible deployment choices, spanning public multi-tenant regions, dedicated regions (such as OCI Dedicated Region and Oracle Alloy), and hybrid offerings like Exadata Cloud@Customer and Compute Cloud@Customer. Option D is correct because a core promise of OCI's distributed cloud is delivering the same cloud services, OCI Console/management tooling, and API parity consistently across those deployment models, so workloads and automation remain portable. Option A is wrong because OCI explicitly does not limit its services to Oracle-operated public multi-tenant data centers; the distributed cloud model extends services to customer and partner sites. Option C is wrong because database services such as Autonomous Database and Base Database Service run in OCI public regions, dedicated regions, and on-premises, not exclusively on-premises. Option E is wrong because in OCI public regions Oracle owns and manages the physical hardware, while customers manage only their own resources and configurations.

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Providing cloud services exclusively through public multi-tenant data centers operated solely by Oracle.

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Restricting all database services to run exclusively on-premises.

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Requiring customers to manage their own underlying physical hardware in OCI public regions.