1Z0-1085-26 Practice Questions 2 — 50 Questions

Question 1

Which OCI storage service is best suited for storing database backups that require high durability and lowest cost without immediate file system mounting requirements?

Accepted Answer

OCI Object Storage. OCI Object Storage provides highly durable, low-cost object storage ideal for backups.

Answer

Local NVMe Storage

Answer

Boot Volume Storage

Answer

OCI File Storage Service

Question 2

A web application experiencing fluctuating traffic needs a compute solution that automatically scales out the number of virtual machine instances based on CPU utilization. Which combination of OCI services should be configured?

Accepted Answer

Instance Pools and Autoscaling Configurations. Instance Pools and Autoscaling Configurations work together to automatically provision or terminate compute instances based on defined performance metrics.

Answer

Container Instances and OKE

Answer

Compute Instances and Load Balancer

Answer

Bare Metal Instances and NAT Gateway

Question 3

An application running on OCI Compute instances requires shared file storage that can be mounted concurrently across hundreds of Linux instances via the standard NFS protocol. Which OCI storage service is best suited?

Accepted Answer

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

Answer

Object Storage

Answer

Block Volume

Answer

Local NVMe Temporary Storage

Question 4

An administrator needs to create a custom DNS domain name resolution for instances within an OCI VCN so they can resolve hostnames to internal IP addresses. Which OCI DNS feature should be configured?

Accepted Answer

Private DNS Zones. Private DNS zones in OCI DNS allow administrators to manage custom DNS records for VCNs without exposing them to the public internet.

Answer

Virtual Circuit DNS resolver

Answer

Internet Gateway DNS forwarding

Answer

Public DNS Zones

Question 5

You are configuring security rules for an OCI Virtual Cloud Network. What is the key difference between a Security List and a Network Security Group (NSG)?

Accepted Answer

Security Lists apply to entire subnets, while NSGs apply to specific VNICs.. Security lists apply to all VNICs in a subnet, whereas NSGs apply to a specific set of VNICs chosen by the administrator.

Answer

Security Lists only support stateless rules, while NSGs only support stateful rules.

Answer

Security Lists apply to specific VNICs, while NSGs apply to entire subnets.

Answer

Security Lists are regional, while NSGs are availability domain-specific.

Question 6

Which TWO core OCI services provide compute capabilities? (Choose two.)

Accepted Answer

Oracle Container Engine for Kubernetes (OKE). Compute Instances and Oracle Container Engine for Kubernetes (or Container Instances) provide compute power in OCI.

Answer

OCI File Storage Service

Answer

OCI Object Storage

Answer

OCI Virtual Cloud Network

Question 7

You need to deploy a batch processing job that can tolerate sudden termination by OCI if compute capacity is reclaimed, significantly reducing your compute costs. Which instance type should you choose?

Accepted Answer

Preemptible Instance. Preemptible instances are spare compute capacity offered at a lower price that can be reclaimed by OCI when capacity is needed.

Answer

Standard Bare Metal Shape

Answer

Standard Flexible VM Shape

Answer

Dedicated Virtual Machine Host

Question 8

You have an application running in OCI that needs to query Oracle Autonomous Database privately. Traffic must not traverse the public internet and must use OCI's backbone network. Which service should you configure in your VCN?

Accepted Answer

Service Gateway. A Service Gateway allows private access to regional Oracle services like Autonomous Database and Object Storage without internet exposure.

Answer

IPsec VPN Tunnel

Answer

NAT Gateway

Answer

Internet Gateway

Question 9

You need to connect an on-premises data center to an OCI Virtual Cloud Network with dedicated, high-bandwidth, and predictable network performance that bypasses the public internet entirely. Which OCI networking service should you implement?

Accepted Answer

FastConnect. OCI FastConnect provides a dedicated, private connection between your on-premises data center and OCI with higher bandwidth and better reliability than the public internet.

Answer

Internet Gateway

Answer

Local Peering Gateway

Answer

Site-to-Site VPN

Question 10

You need to run a stateless containerized background processing job that executes periodically and terminates immediately upon completion without managing servers. Which OCI serverless service is ideal?

Accepted Answer

OCI Functions. OCI Functions is a serverless, pay-as-you-go platform built on Fn Project that runs code in response to events or schedules.

Answer

Oracle Container Engine for Kubernetes

Answer

Block Storage Volumes

Answer

Bare Metal Compute Instances

Question 11

An application running in an OCI VCN needs to access OCI Object Storage and Oracle Autonomous Database privately. Both services must be accessed without traffic leaving Oracle's network backbone and without using public IPs. Which combination of OCI gateway features accomplishes this?

Accepted Answer

Service Gateway with appropriate VCN route table rules and security policies. A Service Gateway allows private access to regional Oracle services (like Object Storage), while Oracle Database services are accessed natively within private subnets via the service network.

Answer

Internet Gateway and NAT Gateway

Answer

Dynamic Routing Gateway paired with an external DNS resolver

Answer

Local Peering Gateway attached to the Object Storage tenancy

Question 12

You are configuring an Oracle Cloud Infrastructure (OCI) Virtual Cloud Network (VCN) and need to ensure that compute instances in a private subnet can initiate outbound internet connections to download software patches without allowing unsolicited inbound traffic from the internet. Which gateway must you attach to the VCN?

Accepted Answer

NAT Gateway. A NAT (Network Address Translation) Gateway enables instances in a private subnet to connect to the internet for updates while blocking inbound connections from the internet.

Answer

Service Gateway

Answer

Internet Gateway

Answer

Dynamic Routing Gateway

Question 13

A cloud architect needs to deploy a cloud-native application using Docker containers without managing any underlying infrastructure, servers, or Kubernetes worker nodes. Which OCI service should they select?

Accepted Answer

OCI Container Instances. OCI Container Instances is a serverless compute service that lets you run containers quickly without needing to manage any underlying infrastructure or provision compute instances.

Answer

OCI Functions

Answer

Oracle Container Engine for Kubernetes (OKE)

Answer

Compute Instances with Custom Images

Question 14

An application requires a block volume with guaranteed high performance and low latency for heavy database operations. Which OCI Block Volume performance tier should you select?

Accepted Answer

Higher Performance. Higher Performance provides maximum IOPS and throughput for demanding database workloads.

Answer

Archive Tier

Answer

Balanced

Answer

Lower Cost

Question 15

You need to deploy a scalable containerized web application where Oracle manages the Kubernetes control plane and you manage the underlying compute worker nodes. Which service should you choose?

Accepted Answer

Oracle Container Engine for Kubernetes (OKE). Oracle Container Engine for Kubernetes (OKE) is a fully managed service where Oracle manages the Kubernetes control plane.

Answer

Compute VM instance pools without Docker

Answer

OCI Container Instances

Answer

OCI Functions

Question 16

Which TWO OCI services are used to build and manage containerized applications? (Choose two.)

Accepted Answer

Oracle Container Engine for Kubernetes (OKE). Oracle Container Engine for Kubernetes (OKE) and OCI Container Instances are core container services in OCI.

Answer

OCI Internet Gateway

Answer

OCI File Storage Service

Answer

OCI Block Volume

Question 17

Which TWO OCI compute shape categories offer flexible sizing where you can independently select the number of OCPUs and memory? (Choose two.)

Accepted Answer

Flexible Virtual Machine Shapes. Flexible shapes are available for standard virtual machines and certain specialized compute families.

Answer

Preemptible Fixed VM Shapes

Answer

Standard Fixed Virtual Machine Shapes

Answer

Object Storage Compute Shapes

Question 18

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?

Accepted Answer

OCI FastConnect connected to a Dynamic Routing Gateway (DRG). FastConnect provides a dedicated, private connection with higher speeds and SLAs, bypassing the public internet, paired with a Dynamic Routing Gateway (DRG) on the VCN side.

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 19

You are configuring an OCI Load Balancer and want to ensure high availability by distributing traffic across backend servers in different availability domains within a region. Which type of load balancer should you deploy?

Accepted Answer

Regional Load Balancer. A regional load balancer distributes traffic across backend servers across multiple availability domains within the region.

Answer

Availability Domain-specific Load Balancer

Answer

Dynamic Routing Load Balancer

Answer

Local Peering Load Balancer

Question 20

Which OCI Object Storage tier is recommended for storing data that is accessed infrequently, but requires rapid access when needed with lower retrieval costs than Archive?

Accepted Answer

Infrequent Access Storage. Infrequent Access storage tier is designed for data accessed less frequently, offering lower storage costs than Standard and faster retrieval than Archive.

Answer

Standard Storage

Answer

Archive Storage

Answer

Boot Volume storage