1Z0-1085-26 Timed Hard Questions — 25 Difficult Questions

Question 1

; You need to access a private database instance in an OCI VCN that has no public IP addresses assigned, without setting up a traditional VPN or an inbound bastion host with an open SSH port. Which service should you configure?

15 minute time limit — choose an answer to begin.

Accepted Answer

OCI Bastion. OCI Bastion service provides restricted and time-limited secure access to target resources that do not have public IPs, using ephemeral SSH or port forwarding sessions without maintaining a permanent bastion host.

Answer

Dynamic Routing Gateway

Answer

NAT Gateway

Answer

Site-to-Site VPN

Question 2

An enterprise is auditing their OCI IAM setup and discovers that a policy statement was written with a syntax error. Which OCI mechanism validates IAM policy syntax before it is saved or applied?

Accepted Answer

The built-in OCI IAM policy validator and syntax checker in the Console/API.. The OCI IAM policy editor in the console and API provides real-time syntax checking and validation as you type policy statements.

Answer

OCI Resource Manager Terraform syntax checker.

Answer

OCI Audit log analysis.

Answer

OCI Cloud Guard policy rules.

Question 3

An organization is planning a disaster recovery strategy for a Tier-1 financial application. They need a Recovery Point Objective (RPO) of near-zero and a Recovery Time Objective (RTO) of seconds. Which OCI deployment pattern best fulfills these stringent requirements?

Accepted Answer

Deploy an active-active architecture across two low-latency interconnected OCI regions using synchronous replication and automated traffic management failover.. A multi-region active-active or active-passive configuration with synchronous data replication across regions provides the lowest RPO and RTO.

Answer

Deploy instances across three Fault Domains in a single Availability Domain with automated compute health checks.

Answer

Backup daily block volumes to Object Storage and restore them in a secondary region upon disaster declaration.

Answer

Deploy an active-passive architecture across two OCI regions using asynchronous database replication and manual DNS failover.

Question 4

You need to write an IAM policy that allows a group named 'NetworkAdmins' to manage all VCN components, but you want to ensure that this policy is only applicable when evaluated from the home region of the tenancy. How can you accomplish this using policy conditions?

Accepted Answer

Use the condition 'where request.region = <home-region>'. OCI IAM policy conditions support checking contextual variables such as request.region, enabling regional scoping.

Answer

IAM policies cannot be restricted by region; they always apply globally.

Answer

Use the condition 'where target.region.home = true'

Answer

Use the condition 'where principal.region = home'

Question 5

Your organization uses federated identity with an external SAML 2.0 identity provider (IdP). A user leaves the company, and their account is disabled in the corporate IdP. What happens when that user attempts to access OCI via the federated login?

Accepted Answer

Authentication fails immediately at the IdP, preventing access to OCI.. Federated authentication relies on the corporate IdP; once disabled there, the user cannot successfully authenticate or generate security assertions for OCI.

Answer

The user can still log into OCI using local OCI IAM password credentials.

Answer

OCI will prompt the user to reset their OCI password.

Answer

The user retains access until their active OCI API signing key expires.

Question 6

Your organization has a strict requirement that no IAM policy can be written without a specified description and that all policies must be reviewed. When creating an IAM policy in OCI, is providing a description mandatory?

Accepted Answer

Yes, providing a description is mandatory when creating an IAM policy.. In OCI IAM, a description is a mandatory field when creating a policy to help administrators document the business justification.

Answer

Descriptions are only mandatory when using the CLI, but optional in the Console.

Answer

Only if the policy is created at the tenancy root level.

Answer

No, the description is entirely optional and can be left blank.

Question 7

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 are connected to each other by a low-latency, high-bandwidth network, enabling synchronous replication and distributed architectures.

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 8

An enterprise has multiple child compartments under a root tenancy. A security administrator wants to ensure that a specific IAM policy written in the root tenancy cannot be overridden or weakened by child compartment policies. How does OCI handle policy evaluation across hierarchical boundaries?

Accepted Answer

Policies are additive across the hierarchy; higher-level grants cannot be blocked because OCI has no explicit deny statements.. OCI IAM policies are additive. Permissions granted at higher levels (like tenancy or parent compartments) flow down and cannot be blocked or denied by child compartment policies since OCI does not have explicit DENY rules.

Answer

OCI evaluates policies alphabetically and applies the first matching statement.

Answer

Root tenancy policies are automatically disabled if any child compartment policy exists.

Answer

Child compartment policies take precedence and override parent compartment policies.

Question 9

Your organization requires a localized cloud environment that provides access to all OCI services, but data must remain strictly within a specific country due to regulatory mandates, and the infrastructure must be managed entirely on-premises. Which OCI offering is appropriate?

Accepted Answer

OCI Dedicated Region Cloud@Customer. OCI Dedicated Region Cloud@Customer provides all OCI services locally on-premises.

Answer

OCI FastConnect

Answer

OCI VPN Connect

Answer

OCI Public Cloud Region

Question 10

A user needs permission to manage users and groups within your OCI tenancy, but you want to ensure they cannot modify any cloud infrastructure resources (such as VCNs or Compute instances). What is the most precise tenancy-level IAM policy statement required to achieve this?

Accepted Answer

Allow group UserAdmins to manage identity-domains in tenancy. To manage identity resources like users and groups without granting infrastructure access, the domain resource type is 'tenancy' with the verb 'inspect' or 'manage' scoped to identity services.

Answer

Allow user UserAdmins to inspect compartments in tenancy

Answer

Allow group UserAdmins to manage all-resources in tenancy

Answer

Allow group UserAdmins to manage users in tenancy

Question 11

Which THREE best practices should be followed when designing an OCI compartment hierarchy and IAM policy structure? (Choose three.)

Accepted Answer

Grant permissions to user groups rather than attaching policies directly to individual users.. Best practices include keeping compartment hierarchies shallow, using groups rather than individual users in policies, and following the principle of least privilege.

Answer

Share tenancy root administrative credentials among all team members.

Answer

Write all IAM policies at the root tenancy level to avoid managing multiple policies.

Question 12

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.. Using OCI cross-region replication to a secondary region connected via Oracle's private backbone fulfills this requirement.

Answer

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

Answer

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

Answer

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

Question 13

An administrator creates a new dynamic group with matching rules, but instances belonging to that group are not receiving the permissions granted by the policy referencing the dynamic group. What is the most likely cause?

Accepted Answer

No IAM policy has been created that grants permissions to the dynamic group.. For a dynamic group to receive permissions, an IAM policy must be written granting access to that specific dynamic group name (e.g., 'Allow dynamic-group <group-name> to...').

Answer

Dynamic group names are case-insensitive in rules but case-sensitive in IAM policies, causing a mismatch.

Answer

The instances must be terminated and relaunched for dynamic group membership to evaluate.

Answer

Dynamic groups cannot be used in IAM policies; only user groups can.

Question 14

Which THREE features are associated with OCI Defined Tags and Tagged-Based Access Control (TBAC)? (Choose three.)

Accepted Answer

Defined tags require a Tag Namespace to be created first.. Defined tags require tag namespaces, support tag defaults, and can be evaluated in IAM policies for TBAC.

Answer

Defined tags replace IAM policies entirely for access control.

Answer

Defined tags can only be created as free-form strings without any governance.

Question 15

An organization must comply with strict data sovereignty laws requiring that their cloud environment remain physically isolated from the public internet and operated independently, yet still receive continuous updates and feature parity with OCI public cloud. Which deployment model satisfies this requirement?

Accepted Answer

OCI Dedicated Region. OCI Dedicated Region provides a fully isolated region within the customer's data center, managed by Oracle, with identical APIs and services to the public cloud.

Answer

OCI Hybrid Cloud via VPN Connect.

Answer

OCI FastConnect with a dedicated private circuit.

Answer

OCI Public Cloud with a dedicated Virtual Cloud Network (VCN).

Question 16

Which THREE components or services are part of the OCI distributed cloud strategy, providing flexibility in where and how cloud services are consumed?

Accepted Answer

OCI Cloud@Customer. The OCI distributed cloud model includes Public Cloud, Dedicated Region, and Cloud@Customer as core offerings to meet various business needs.

Answer

OCI Resource Manager

Answer

OCI Data Catalog

Question 17

An architect is evaluating OCI's distributed cloud offerings. A client in the healthcare sector requires an on-premises deployment that includes the complete portfolio of OCI cloud services, autonomous database capabilities, and exact API parity with the public cloud, all managed locally. Which OCI solution should be proposed?

Accepted Answer

OCI Dedicated Region. OCI Dedicated Region brings the complete set of OCI public cloud services into the customer's data center.

Answer

Oracle Autonomous Database on Dedicated Exadata Infrastructure in the Public Cloud

Answer

OCI Exadata Cloud@Customer

Answer

OCI Compute Cloud@Customer

Question 18

An enterprise customer wants to leverage OCI Compute Cloud@Customer to run containerized microservices on-premises while integrating seamlessly with OCI public cloud management tools. How does Compute Cloud@Customer achieve this integration?

Accepted Answer

By running an autonomous Kubernetes control plane locally that synchronizes with public cloud APIs via a secure management connection.. Compute Cloud@Customer connects back to the OCI control plane over secure, dedicated network connections to maintain consistent management APIs.

Answer

By replicating all public cloud control plane services locally onto every customer node.

Answer

By requiring manual exports of cloud templates and uploading them via Secure Shell (SSH) daily.

Answer

By converting the on-premises rack into a public OCI Region accessible via the public internet.

Question 19

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.. Dedicated Region provides local data residency, full API/service parity with public cloud, and local control.

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 20

You have a dynamic group named 'AppInstances' configured with the matching rule `instance.compartment.id = 'ocid1.compartment...'`. An instance is moved from this compartment into a different compartment. How quickly does OCI update the dynamic group membership for this instance?

Accepted Answer

Near-real-time (typically within a few minutes). Dynamic group membership evaluations happen dynamically and near-real-time as instances change states or compartments.

Answer

Only when the instance is stopped and restarted.

Answer

Dynamic group membership is static and never updates after initial creation.

Answer

Exactly every 24 hours during the daily IAM sync cycle.