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Multicloud And Hybrid

Practise Oracle Cloud Infrastructure 2026 Architect Professional (1Z0-997-26) (1Z0-997-26) Multicloud And Hybrid practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.

48 questions12 easy19 medium17 hard

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What this domain covers

What to know about Multicloud And Hybrid

Cloud concepts questions usually test the service model (IaaS/PaaS/SaaS) and deployment model (public/private/hybrid/community) appropriate for a given scenario.

IaaS, PaaS and SaaS responsibilities and examples.

Public, private, hybrid and community cloud deployment models.

On-premises vs cloud trade-offs: cost, control, scalability.

How cloud connectivity options (VPN, Direct Connect, ExpressRoute) work.

Watch out for

Common Multicloud And Hybrid exam traps

  • IaaS gives you infrastructure control; SaaS gives you only the application.
  • Hybrid cloud combines on-premises and public cloud — not two public clouds.
  • Cloud does not automatically mean cheaper or more secure.
  • Management responsibility shifts with each service model (IaaSPaaSSaaS).

Question index

All Multicloud And Hybrid questions (48)

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1

An enterprise architect is deploying the OCI-Azure Interconnect in the Ashburn region. Which specific Azure networking resource is directly associated with the Azure side of the ExpressRoute circuit created during the onboarding process?

Easy
2

An architect is designing a hybrid network using OCI FastConnect. Which THREE components are mandatory for setting up a Private Virtual Circuit using a FastConnect Partner? (Choose THREE)

Hard
3

You need to connect an on-premises datacenter to OCI using FastConnect with a Partner model. Which component must you configure in the OCI console before provisioning the virtual circuit with the FastConnect partner?

Medium
4

An administrator is troubleshooting intermittent packet loss and latency spikes over an OCI FastConnect circuit connected to an on-premises datacenter. Which THREE diagnostic steps or tools are applicable within OCI? (Choose THREE)

Hard
5

An architect is designing a high-availability hybrid cloud strategy utilizing OCI FastConnect and OCI Site-to-Site VPN to the same VCN. To ensure automatic failover from FastConnect to VPN without routing loops, what design pattern must be implemented on the OCI Dynamic Routing Gateway (DRG)?

Hard
6

You are setting up FastConnect and need to choose between the FastConnect Provider model and the FastConnect Colocation model. What is the key characteristic of the Provider model?

Medium
7

An organization has configured an OCI-Azure Interconnect. Latency measurements between an OCI compute instance and an Azure VM exceed acceptable thresholds for a synchronous database replication application. Which diagnostic step should be taken first within OCI?

Hard
8

An architect is designing a multi-cloud application where microservices in OCI need to communicate securely with microservices in Azure. They decide to deploy a service mesh (such as Istio) spanning both OCI and Azure. What network prerequisite is essential across the OCI VCN and Azure VNet for the control plane to communicate?

Hard
9

What is the maximum supported MTU (Maximum Transmission Unit) size for traffic passing through an OCI FastConnect virtual circuit by default?

Easy
10

When designing a high-performance hybrid architecture integrating an on-premises data center with OCI, which THREE key factors should be evaluated to optimize network throughput and reliability?

Medium
11

You need to connect multiple on-premises branch offices to a single OCI VCN using OCI Site-to-Site VPN. Each branch office uses overlapping private IP address ranges (e.g., 192.168.1.0/24). Which OCI component must you utilize to manage overlapping IP spaces and route traffic correctly?

Medium
12

Your security team requires that all data traversing the OCI-Azure Interconnect must be encrypted. Does the standard OCI-Azure Interconnect encrypt traffic natively at Layer 3?

Medium
13

An administrator has set up a FastConnect public peering session to access OCI Object Storage from an on-premises data center without traversing the public internet. However, on-premises hosts are still failing to resolve the Object Storage public IP addresses. What must be configured to ensure proper routing and resolution?

Hard
14

You are troubleshooting a cross-cloud connectivity issue between an OCI VCN and an Azure VNet via the OCI-Azure Interconnect. Traffic is dropping intermittently between the environments. Which THREE diagnostic steps or configuration checks should you perform?

Hard
15

Your organization is implementing a multicloud strategy where workloads in OCI must securely communicate with workloads in AWS over a private connection. You decide to set up a third-party software virtual appliance (VPN gateway) inside an OCI VCN. What specific VCN configuration change is required to ensure that return traffic from OCI compute instances correctly routes back through the virtual appliance instance?

Medium
16

An enterprise requires a dedicated, private connection between their on-premises data center and Oracle Cloud Infrastructure (OCI). The connection must bypass the public internet and offer high bandwidth, predictable performance. Which OCI networking service should be deployed?

Easy
17

An enterprise is integrating their on-premises network with OCI and requires secure, encrypted hybrid connectivity. Which THREE mechanisms or features can be utilized to secure data in transit between on-premises and OCI? (Choose THREE)

Hard
18

An administrator needs to configure DNS resolution between an on-premises datacenter and OCI. On-premises servers must resolve hostnames of compute instances in an OCI VCN. Which OCI service component must be utilized to achieve this?

Hard
19

When configuring DRG route tables and route distributions in OCI for hybrid connectivity, which TWO routing actions or concepts are supported? (Choose TWO)

Medium
20

What is the primary purpose of configuring Border Gateway Protocol (BGP) Autonomous System Numbers (ASNs) when establishing an OCI FastConnect connection?

Easy
21

Which TWO configuration items must match on both the OCI CPE/VPN gateway and the on-premises customer-premises equipment (CPE) router to successfully establish an IPSec VPN tunnel? (Choose TWO)

Medium
22

Your company maintains a hybrid architecture with an OCI Site-to-Site VPN connecting an on-premises data center to an OCI VCN. Due to compliance requirements, all IPsec tunnel traffic must use robust encryption with a specific hashing algorithm. Which protocol suite and encryption standard are natively supported by OCI Site-to-Site VPN?

Easy
23

You are configuring an OCI Site-to-Site VPN. Your on-premises firewall requires static routing instead of BGP. Which OCI VPN mode must you select when creating the IPSec connection?

Medium
24

An organization is implementing a hybrid cloud topology where on-premises applications need to access OCI Autonomous Database privately. Which THREE OCI networking components or services are involved in this private connection architecture? (Choose THREE)

Hard
25

You need to connect multiple VCNs in different regions to a single on-premises datacenter via FastConnect. Which DRG feature enables you to route traffic efficiently across multiple VCNs and remote connections?

Medium
26

An enterprise has workloads running in OCI and Google Cloud Platform (GCP). They require low-latency, private connectivity between OCI and GCP without traffic traversing the public internet. Which architectural design pattern achieves this?

Hard
27

You are configuring redundant OCI Site-to-Site VPN tunnels to your on-premises datacenter. OCI automatically provisions how many tunnels per VPN connection by default for high availability?

Medium
28

Which OCI construct serves as the central hub for routing traffic between VCNs and hybrid network connections such as FastConnect and IPSec VPN?

Easy
29

Your company operates a hybrid application where frontend servers in Azure need to communicate with backend databases in OCI using private IP addresses via the OCI-Azure Interconnect. Which routing configuration is required on the OCI Dynamic Routing Gateway (DRG) attached to your VCN?

Hard
30

Which TWO of the following statements are correct regarding the OCI-Azure Interconnect? (Choose TWO)

Medium
31

You are configuring BGP for an OCI FastConnect virtual circuit. What happens if BGP peering fails between your on-premises router and the OCI Dynamic Routing Gateway?

Medium
32

You are designing an active-active hybrid architecture between an on-premises datacenter and OCI using two separate FastConnect circuits connected to two different DRG attachments. How does OCI determine path selection when receiving identical BGP route advertisements from both circuits?

Hard
33

Which TWO factors should be evaluated when choosing between an OCI FastConnect Colocation model and a Provider model? (Choose TWO)

Medium
34

An architect is designing a multi-cloud disaster recovery strategy between OCI and AWS. Production data resides in an Oracle Autonomous Database on OCI, and application servers run in AWS EC2. To secure the network traffic between AWS and OCI without routing over the public internet, which approach should be implemented?

Hard
35

An administrator is designing a hybrid cloud architecture where OCI workloads need to access an Azure SQL Database over the OCI-Azure Interconnect. The OCI VCN and Azure VNet have overlapping IP address spaces (10.0.0.0/16). What is the mandatory architectural requirement to make this cross-cloud communication possible?

Hard
36

Which OCI service is primarily used to establish an encrypted site-to-site IPSec VPN connection between an on-premises datacenter and an OCI Virtual Cloud Network?

Easy
37

Which TWO of the following are valid deployment models or connection types supported by OCI FastConnect?

Easy
38

Which TWO methods can be used to achieve high availability for an OCI Site-to-Site VPN connection to an on-premises datacenter? (Choose TWO)

Medium
39

You are configuring the OCI-Azure Interconnect to link an OCI Virtual Cloud Network (VCN) with an Azure Virtual Network (VNet). You have already established the FastConnect and ExpressRoute circuits. What is the mandatory next step to enable cross-cloud routing between the OCI Dynamic Routing Gateway (DRG) and the Azure Virtual Network Gateway?

Medium
40

What is the primary function of an OCI Service Gateway?

Easy
41

An enterprise multicloud architect is planning disaster recovery for workloads running across OCI and AWS. Which THREE strategies are commonly employed for cross-cloud disaster recovery architectures? (Choose THREE)

Hard
42

Which protocol is used by OCI FastConnect and Site-to-Site VPN to dynamically exchange routing information with on-premises routers?

Easy
43

An administrator wants to restrict which on-premises subnets can communicate with an OCI VCN over an IPSec VPN connection. Where should this route filtering be implemented on the OCI side?

Medium
44

You are troubleshooting an issue where an on-premises server cannot reach an OCI compute instance over an IPSec VPN tunnel. The VPN status in the OCI console shows 'Tunnel Up', but ping tests fail. What is the most likely cause?

Medium
45

An enterprise architect is connecting AWS and OCI using a third-party SD-WAN appliance deployed in both clouds. The appliances are deployed on OCI compute instances and AWS EC2 instances. To ensure high availability across availability domains, where should the OCI SD-WAN instances be placed?

Hard
46

What is the primary benefit of using OCI FastConnect over an IPSec VPN connection?

Easy
47

You are configuring a FastConnect dedicated circuit between your corporate datacenter and OCI. You need to enable dynamic routing where BGP routes are automatically propagated between the Dynamic Routing Gateway (DRG) and your on-premises routers. Which OCI construct must be attached to the DRG to achieve this?

Medium
48

When setting up an OCI Site-to-Site VPN, which on-premises device representation must you create in the OCI Console before configuring the IPSec connection?

Easy

Frequently asked questions

What does the Multicloud And Hybrid domain cover on the 1Z0-997-26 exam?
Cloud concepts questions usually test the service model (IaaS/PaaS/SaaS) and deployment model (public/private/hybrid/community) appropriate for a given scenario.
How many questions are in this domain?
This page lists all 48 Multicloud And Hybrid questions in the 1Z0-997-26 question bank. The actual exam draws from this domain proportionally to its weighting in the official exam blueprint.
What is the best way to practise this domain?
Start with a short focused session (10 questions) to identify gaps, then work through explanations. Repeat with a longer session once the weak areas feel solid.
Can I practise only Multicloud And Hybrid questions?
Yes — the session launcher on this page filters questions to this domain only. Choose any session length for inline explanations and scoring.
oracle-oci-architect-pro ORACLE-OCI-ARCHITECT-PRO multicloud and hybrid Practice Questions