1Z0-1085-26 Getting Started With Oci Practice Test 4 — 15 Questions

Question 1

Which TWO characteristics apply to OCI Fault Domains? (Choose two.)

Accepted Answer

They provide protection against unexpected hardware failures and maintenance events within an Availability Domain.. Fault domains protect against hardware/rack failures and are selected automatically if not specified.

Answer

They are billing boundaries used to allocate cloud costs across different business units.

Answer

They require the user to manually configure top-of-rack network switches for each domain.

Answer

They span across multiple OCI regions to guarantee global high availability.

Question 2

An organization with strict data residency requirements is evaluating OCI's hybrid and dedicated offerings. Which THREE options represent OCI deployment models designed to bring cloud services into customer-controlled environments? (Choose three.)

Accepted Answer

OCI Compute Cloud@Customer. Dedicated Region, Exadata Cloud@Customer, and Compute Cloud@Customer bring OCI capabilities to on-premises data centers.

Answer

OCI Local Peering Gateway

Answer

OCI Public Cloud Region

Question 3

Which TWO statements are true regarding the connectivity between OCI Availability Domains within a region? (Choose two.)

Accepted Answer

Traffic between Availability Domains within the same region travels over a high-bandwidth, low-latency network fabric.. ADs within a region are connected by a high-speed network fabric and do not incur standard internet egress fees.

Answer

Traffic between Availability Domains must traverse public internet gateways and is billed at standard internet egress rates.

Answer

Inter-AD communication requires the manual setup of encrypted IPsec VPN connections.

Answer

Availability domains are not connected directly; all communication must route through a secondary OCI region.

Question 4

An enterprise customer evaluating OCI's distributed cloud model wants to understand the advantages of OCI Dedicated Region compared to traditional public cloud. Which THREE benefits are provided by OCI Dedicated Region? (Choose three.)

Accepted Answer

Complete control and data residency within the customer's own data center facility.. OCI Dedicated Region is a fully managed cloud region deployed inside the customer's own data center, so option C is correct because it gives the customer complete control over the physical environment and keeps all data resident on-premises for sovereignty and compliance. Option D is correct because OCI Dedicated Region runs the same OCI public cloud services with exact API parity, letting workloads move between the dedicated region and public OCI without code changes. Option E is correct because Oracle operates and manages the dedicated region, applying continuous updates and adding new OCI services automatically, just as in a public region. Option A is wrong because OCI Dedicated Region does not eliminate third-party OS licensing costs, which remain the customer's responsibility. Option B is wrong because Oracle, not the customer's IT staff, handles patching of the hypervisors and control plane in this fully managed offering.

Answer

Elimination of all software licensing costs for third-party operating systems.

Answer

Requiring the customer's internal IT staff to manually patch the underlying hypervisors and control plane.

Question 5

Which TWO mechanisms help protect OCI workloads against single points of failure at the infrastructure level? (Choose two.)

Accepted Answer

Deploying applications across multiple Availability Domains to survive a complete facility outage.. Option A is correct because OCI Availability Domains (ADs) are isolated, physically separate data centers within a region, each with independent power, cooling, and networking, so deploying applications across multiple ADs lets workloads survive a complete facility outage and eliminates a single-AD point of failure. Option E is correct because Fault Domains (FDs) are logical groupings of hardware within an AD that do not share a single rack or power distribution unit, so distributing instances across multiple FDs protects against rack-level hardware and power failures. Option B is not correct because a single VCN with no backup subnets concentrates network resources and provides no redundancy, which increases rather than mitigates single points of failure. Option C is not correct because co-locating all compute instances on one physical host creates a host-level single point of failure and offers no meaningful availability benefit. Option D is not correct because disabling automated backups removes a data-recovery safeguard and does nothing to protect against infrastructure-level single points of failure.

Answer

Relying on a single Virtual Cloud Network (VCN) with no backup subnets.

Answer

Placing all compute instances on a single physical host to maximize internal CPU cache efficiency.

Answer

Disabling automated backups to prevent storage controller contention.

Question 6

An architect is planning a multi-region disaster recovery deployment in OCI. Which THREE design considerations are essential for ensuring successful data synchronization and failover? (Choose three.)

Accepted Answer

Selecting secondary regions that offer the necessary service availability and capacity to run the production workload.. Option B is correct because a DR region must actually be able to host the production workload, so the architect must verify that the required OCI services (compute shapes, database, load balancer, storage, etc.) and sufficient capacity exist in the chosen secondary region before relying on it for failover. Option C is correct because the replication mode directly determines the RPO: synchronous replication can achieve near-zero data loss but adds latency and distance constraints, while asynchronous replication tolerates higher latency at the cost of some data loss, so the choice must be driven by the business's acceptable RPO. Option E is correct because seamless failover requires automated health checks (for example, OCI Health Checks or a load balancer's health check) combined with traffic management/DNS steering policies such as OCI Traffic Management failover policies to redirect clients to the standby region without manual intervention. Option A is not appropriate because routing database replication logs over the public internet exposes sensitive data and offers no guaranteed bandwidth, latency, or security compared with private connectivity such as OCI FastConnect or site-to-site VPN. Option D is incorrect because OCI regions do not have identical latency to all global ISPs; inter-region and ISP latencies vary significantly, so this assumption would undermine DR planning.

Answer

Routing all database replication logs through the public internet for maximum transparency.

Answer

Assuming that all OCI regions have identical network latency to all global internet service providers.

Question 7

An enterprise customer is reviewing their high availability architecture in OCI. They want to ensure their database and application tiers are protected against both localized hardware failures and major facility disruptions. Which THREE architectural practices should they follow? (Choose three.)

Accepted Answer

Distribute database nodes across distinct Fault Domains within an Availability Domain to protect against rack-level failures.. Option A is correct because distributing database nodes across distinct Fault Domains within an Availability Domain protects against localized rack-level or hardware failures, since each Fault Domain has independent power and network infrastructure. Option D is correct because deploying application servers across multiple Availability Domains ensures the application tier survives a complete AD outage, as Availability Domains are physically isolated from one another within a region. Option E is correct because regularly testing disaster recovery and failover procedures validates that Recovery Time Objective (RTO) and Recovery Point Objective (RPO) targets are actually achievable, which is essential for a credible high availability architecture. Option B is incorrect because relying solely on manual intervention without automated health checks increases recovery time and human error, undermining high availability. Option C is incorrect because consolidating all nodes onto a single physical server creates a single point of failure and provides no protection against hardware or facility disruptions.

Answer

Rely solely on manual administrator intervention for all failover scenarios without automated health checks.

Answer

Consolidate all application and database nodes onto a single physical server in Availability Domain 1.

Question 8

An administrator needs to organize and control access to resources for different departments within an OCI tenancy. Which OCI construct is used for resource organization and isolation?

Accepted Answer

Compartment. Compartments are the fundamental logical organizing and security-isolating units in OCI.

Answer

Region

Answer

Tenancy

Answer

Fault Domain

Question 9

You are provisioning a new compute instance and need to ensure it is isolated from hardware failures on a specific physical rack while residing in the same availability domain. Which OCI feature should you leverage?

Accepted Answer

Fault Domain. Fault domains provide anti-affinity within an availability domain by placing instances across physical hardware racks with independent power and networking.

Answer

Availability Domain

Answer

Compartment

Answer

Region

Question 10

What is the primary relationship between an OCI region and its availability domains?

Accepted Answer

A region contains one or more availability domains.. An OCI region is composed of one or more availability domains, which are isolated data centers with independent power, cooling, and networking.

Answer

An availability domain spans across multiple global regions.

Answer

Regions and availability domains are identical constructs with different names.

Answer

An availability domain contains multiple regions.

Question 11

You are designing a disaster recovery strategy for an OCI database. The primary requirement is to replicate data to a completely different geographic area with minimal latency impact. Which OCI architectural component should you utilize for the DR site?

Accepted Answer

A different OCI Region. Disaster recovery across geographic regions requires deploying resources in a secondary OCI region.

Answer

A different Fault Domain within the same Availability Domain

Answer

A different Availability Domain in the same region

Answer

A separate Compartment within the same region

Question 12

A financial services company needs to ensure that their database primary and standby nodes are never placed on the same physical infrastructure rack, despite being in the same data center building. What configuration satisfies this?

Accepted Answer

Place the primary node in Fault Domain 1 and the standby node in Fault Domain 2.. Assigning the primary and standby nodes to separate fault domains ensures they reside on different physical hardware racks.

Answer

Place both nodes in different compartments.

Answer

Place both nodes in Fault Domain 1.

Answer

Place both nodes in the root tenancy.

Question 13

Your company operates workloads in an OCI region that suffers a rare regional-wide network partition. Your architecture remains online because you implemented a multi-region deployment. Which OCI feature enables this level of business continuity?

Accepted Answer

OCI Regions. OCI Regions are the geographic constructs that enable multi-region deployments — each region is a separate geographic area with independent infrastructure, and workloads can be replicated across regions for business continuity against regional failures. A regional-wide network partition is exactly the failure mode that multi-region architecture addresses, and Regions are the OCI feature that makes this possible. Fault domains and availability domains are sub-region constructs and cannot survive a regional outage; a DRG is a connectivity component, not a continuity feature.

Answer

Fault Domains

Answer

Availability Domains

Answer

Dynamic Routing Gateway

Question 14

You are reviewing the network architecture of an OCI region and need to understand the connectivity between availability domains. Which statement is accurate regarding availability domain inter-connectivity?

Accepted Answer

Availability domains are connected by a high-bandwidth, low-latency network.. Availability domains within an OCI region are physically separated data centers connected by a dedicated high-bandwidth, low-latency, redundant network fabric. This interconnect is what allows multi-AD architectures to replicate data and serve traffic across ADs with predictable performance, without traversing the public internet. The ADs remain isolated for fault-tolerance purposes (separate power, cooling, and network), but they are not network-isolated from each other — that distinction is the core of the correct answer.

Answer

Availability domains are isolated from each other and cannot communicate directly over the network.

Answer

Communication between availability domains must route through the public internet.

Answer

Availability domains share the same physical power infrastructure to ensure identical latency.

Question 15

An administrator is designing a highly available application across three fault domains in an OCI availability domain. If an instance in Fault Domain 1 requires maintenance, how are resources in Fault Domain 2 and Fault Domain 3 affected?

Accepted Answer

Fault Domain 2 and 3 remain fully operational and unaffected.. Fault domains are completely isolated; maintenance or failure in one fault domain has no impact on instances in other fault domains.

Answer

Instances in Fault Domain 2 are migrated into Fault Domain 1.

Answer

All virtual network traffic across the availability domain is temporarily suspended.

Answer

Resources in Fault Domain 2 and 3 are automatically rebooted during Fault Domain 1 maintenance.