1Z0-1085-26 Core Oci Services Practice Test 13 — 15 Questions

Question 1

A database administrator must establish a high-throughput, highly reliable hybrid connection between an on-premises data center and OCI. The connection must bypass the public internet and guarantee steady throughput with SLA-backed performance. Which networking service combination meets these criteria?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

OCI FastConnect connected to a Dynamic Routing Gateway (DRG). OCI FastConnect provides a dedicated, private physical connection between on-premises and OCI, bypassing the public internet, and when paired with a Dynamic Routing Gateway (DRG), it enables dynamic routing and high-throughput, SLA-backed hybrid connectivity. This combination meets the requirements for reliability and steady throughput.

Answer

Service Gateway connected to an IPSec VPN

Answer

IPSec VPN connected to an Internet Gateway

Answer

Local Peering Gateway connected to a NAT Gateway

Question 2

An administrator needs to store infrequently accessed backups in OCI Object Storage that require long-term retention and can tolerate a retrieval time of up to several hours. Which storage tier is most cost-effective?

Accepted Answer

Archive Storage. Archive Storage is designed for data that is rarely accessed and has a multi-hour retrieval latency, offering the lowest cost.

Answer

Infrequent Access Storage

Answer

Standard Storage

Answer

Block Volume Backups tier

Question 3

An application deployment requires traffic from an OCI Virtual Cloud Network (VCN) to securely access Oracle Autonomous Database instances in the region without traversing the public internet. Which gateway must be configured in the VCN?

Accepted Answer

Service Gateway. A Service Gateway allows VCN resources to privately access supported OCI public services, such as Oracle Services Network, without using the public internet.

Answer

Internet Gateway

Answer

Dynamic Routing Gateway

Answer

NAT Gateway

Question 4

A security engineer is designing a zero-trust architecture for a microservices environment in OCI. Traffic between compute instances in different subnets must be restricted based on individual workload roles rather than entire subnet CIDR blocks. Which OCI networking feature should be implemented?

Accepted Answer

Network Security Groups (NSGs). Network Security Groups (NSGs) provide virtual firewall rules for a set of VNICs of your choice, allowing fine-grained security rules independent of subnet architecture.

Answer

Security Lists

Answer

Local Peering Gateways

Answer

Stateful Route Tables

Question 5

An operations team wants to ensure that a critical web application automatically scales compute capacity up during high traffic spikes and scales down when traffic subsides. Which OCI service combination provides this capability?

Accepted Answer

Instance Pools with Autoscaling Configurations. Compute autoscaling configurations work alongside Load Balancers and Instance Pools to automatically adjust the number of compute instances based on metrics like CPU utilization.

Answer

Bare Metal instances with manual resizing

Answer

OCI Functions triggered by Object Storage events

Answer

Dedicated Virtual Host resource groups

Question 6

A company needs a shared file system accessible by multiple Linux compute instances simultaneously via the Network File System (NFSv3) protocol across different availability domains. Which OCI service should be deployed?

Accepted Answer

File Storage Service (FSS). File Storage Service (FSS) provides a durable, scalable, enterprise-grade network file system that can be mounted by multiple compute instances across availability domains.

Answer

Local NVMe temporary storage

Answer

Object Storage service

Answer

Block Volume service

Question 7

An administrator needs to configure custom DNS resolution for instances within a VCN so they can resolve hostnames pointing to an internal on-premises corporate directory server over a FastConnect link. Which OCI DNS feature should be configured?

Accepted Answer

VCN Private DNS Resolver forwarding rules. OCI's VCN Private DNS Resolver supports forwarding rules that direct DNS queries for specific domains to external nameservers — such as an on-premises corporate directory server reachable over FastConnect. By configuring a forwarding rule on the VCN's resolver, instances can resolve internal hostnames that live on-prem without exposing those zones publicly. This is the correct feature for hybrid DNS resolution across a private connection.

Answer

Default Internet Gateway DNS forwarding

Answer

Public DNS Zones

Answer

OCI Internet Domain Name Registration

Question 8

An application developer needs to trigger a data-processing script immediately whenever a new object is uploaded to an OCI Object Storage bucket. Which OCI service should be used to execute the script in a serverless manner?

Accepted Answer

OCI Functions triggered via OCI Events. OCI Events service captures changes to cloud resources and can automatically trigger OCI Functions in response to Object Storage uploads.

Answer

Autonomous Database scheduled jobs

Answer

Compute Instance Cron jobs

Answer

Oracle Container Engine for Kubernetes CronJobs

Question 9

An architect is provisioning a high-performance compute cluster that requires direct, unvirtualized access to physical hardware components, including raw local NVMe SSDs and high core counts, without hypervisor overhead. Which compute shape category must be chosen?

Accepted Answer

Bare Metal shapes. Bare Metal shapes provide dedicated physical servers with direct hardware access and no virtualization overhead.

Answer

DenseIO VM shapes

Answer

Preemptible VM instances

Answer

Flexible Virtual Machine shapes

Question 10

A web application hosted on OCI requires layer-7 load balancing, SSL termination, and cookie-based session persistence across multiple backend compute instances. Which OCI Load Balancer type meets these requirements?

Accepted Answer

OCI Layer 7 Load Balancer. The OCI Layer 7 Load Balancer provides HTTP/HTTPS traffic management, SSL termination, and session stickiness.

Answer

Network Load Balancer (NLB)

Answer

Local Peering Gateway (LPG)

Answer

Dynamic Routing Gateway (DRG)

Question 11

A company is running a batch processing workload on OCI and wants to optimize compute costs by using spare capacity. The workload can tolerate sudden termination if OCI reclaims the capacity. Which compute instance type should be deployed?

Accepted Answer

Preemptible Instances. Preemptible instances allow customers to utilize spare OCI compute capacity at a significant discount, with the caveat that OCI can reclaim them when needed.

Answer

Reserved Capacity Instances

Answer

Standard Flexible Compute Instances

Answer

Dedicated Virtual Machine Hosts

Question 12

An administrator needs to ensure that data in an OCI Object Storage bucket is automatically transitioned from Standard storage to Infrequent Access storage after 30 days, and then deleted after 365 days. Which Object Storage feature should be used?

Accepted Answer

Object Storage Lifecycle Rules. Object Storage Object Lifecycle Management rules allow automating the transition and deletion of objects based on age.

Answer

Block Volume Auto-Backup Policies

Answer

VCN Security Lists

Answer

IAM Policy Statements

Question 13

A network engineer is configuring a Site-to-Site VPN between an on-premises data center and an OCI VCN. To ensure high availability, the setup requires multiple customer-premises equipment (CPE) public IP addresses communicating with distinct Oracle VPN tunnel endpoints on the DRG. How many default tunnels does each OCI VPN connection provision per DRG attachment?

Accepted Answer

Two tunnels. Each OCI Site-to-Site VPN connection automatically provisions two redundant tunnels terminating on distinct OCI gateway hardware endpoints for high availability.

Answer

Eight tunnels

Answer

One tunnel

Answer

Four tunnels

Question 14

An enterprise application team needs to migrate an existing multi-tier application into Oracle Container Engine for Kubernetes (OKE). They need a managed Kubernetes control plane where OCI manages the master nodes while worker nodes run in their VCN. Which OKE cluster type should they create?

Accepted Answer

Managed OKE Cluster (Standard control plane with Node Pools). A standard managed OKE cluster provides a fully managed Kubernetes control plane with user-managed worker node pools.

Answer

OCI Container Instances Cluster

Answer

Virtual Node OKE Cluster

Answer

Unmanaged Bare Metal Kubernetes Deployment

Question 15

A cloud architect needs to configure a regional subnet in a Virtual Cloud Network (VCN). Across how many availability domains can a regional subnet span?

Accepted Answer

All availability domains within the region. In OCI, regional subnets can span all availability domains within a region, simplifying IP address management and resource placement.

Answer

Only availability domain 1

Answer

Exactly one availability domain

Answer

Two availability domains maximum