1Z0-1085-26 Practice Test 21 — 15 Questions

Question 1

When evaluating OCI regions for deploying a new application, you notice that some regions are designated as having multiple availability domains while others have only one. What is a key design implication when deploying to a single-AD region?

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

Accepted Answer

You must rely on fault domains for hardware isolation and another region for disaster recovery.. Single-AD regions lack multiple physical data center facilities, so high availability must rely on fault domains for hardware isolation.

Answer

Compute instances are automatically spread across other global regions.

Answer

Storage services are automatically replicated across public clouds.

Answer

You cannot deploy fault domains in a single-AD region.

Question 2

An administrator needs to temporarily grant read access to a specific file in an OCI Object Storage bucket to a colleague without managing IAM user credentials. What feature should be used?

Accepted Answer

Pre-authenticated Request (PAR). Pre-authenticated requests (PARs) provide a convenient way to grant secure, time-limited download or upload access to individual objects.

Answer

Bucket public access toggle

Answer

VCN Security List rule modification

Answer

IAM Group policy update

Question 3

Which TWO of the following are valid methods for deploying applications on OCI without managing underlying operating systems or virtual machine hypervisors? (Choose two.)

Accepted Answer

OCI Functions. OCI Functions and OCI Container Instances are serverless compute options that eliminate OS and hypervisor management.

Answer

DenseIO Compute Instances

Answer

Bare Metal Compute Instances

Answer

Standard Virtual Machine Compute Instances

Question 4

Which THREE of the following actions can be performed using OCI File Storage Service (FSS)? (Choose three.)

Accepted Answer

Encrypt file system data using Oracle-managed or customer-managed encryption keys in OCI Vault.. FSS supports NFSv3, snapshot creation for data protection, and cross-region replication or cloning.

Answer

Attach the file system to compute instances as a block device using iSCSI commands.

Answer

Resize the file system storage capacity manually or configure it to require fixed 32 TB increments.

Question 5

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 6

Your organization wants to store compliance audit logs for 7 years at the absolute lowest storage cost, acknowledging that data retrieval may take several hours. Which OCI Object Storage tier should you use?

Accepted Answer

Archive Storage. OCI Archive Storage is designed for data that is rarely accessed and must be retained for long periods, providing the lowest cost storage with a multi-hour retrieval time.

Answer

Infrequent Access Storage

Answer

Cold Storage

Answer

Standard Storage

Question 7

Which TWO statements accurately describe OCI Block Volume backups?

Accepted Answer

Block volume backups are stored in OCI Object Storage and can be restored as new volumes.. OCI allows both manual and automated scheduled backups, and backups can be copied across different OCI regions for disaster recovery.

Answer

Block volume backups can only be restored within the exact same availability domain where they were created.

Answer

Creating a block volume backup requires stopping the attached compute instance to ensure data integrity.

Answer

Block volume backups cannot be copied across different OCI regions.

Question 8

What is the primary function of an OCI Internet Gateway?

Accepted Answer

Public internet access. An Internet Gateway allows bi-directional traffic between a VCN and the public internet.

Answer

Service access

Answer

Private routing

Answer

VPN termination

Question 9

Which THREE of the following are valid OCI File Storage Service (FSS) characteristics?

Accepted Answer

Elastic capacity. FSS is NFS-based, multi-AD accessible, and highly scalable.

Answer

Requires manual OS mounting

Answer

Block-level access

Question 10

Which THREE of the following are properties of a VCN?

Accepted Answer

DNS support. CIDR block, DNS support, and Subnets are fundamental VCN properties.

Answer

Compute shapes

Answer

Object Storage buckets

Question 11

An engineer needs to deploy flexible compute instances on OCI. Which TWO parameters can be independently adjusted when configuring a flexible compute shape? (Choose two.)

Accepted Answer

Amount of Memory (RAM). Flexible shapes allow users to customize the number of OCPUs and the amount of memory independently to fit workload requirements.

Answer

GPU manufacturer and core architecture

Answer

Hypervisor version and vendor

Answer

Physical motherboard serial number

Question 12

Your development team needs to deploy containerized applications rapidly on OCI without managing underlying compute servers or clusters. Which OCI container service fits this requirement best?

Accepted Answer

OCI Container Instances. OCI Container Instances is a serverless compute service that lets you run containers quickly without having to manage any servers or Kubernetes clusters.

Answer

Oracle Container Engine for Kubernetes (OKE)

Answer

Compute Instances with Docker pre-installed

Answer

OCI Functions

Question 13

Which TWO statements are true regarding Oracle Cloud Infrastructure (OCI) Compute Flexible Shapes?

Accepted Answer

Flexible shapes allow you to independently customize the amount of memory and the number of OCPUs for a virtual machine instance.. Flexible shapes allow you to customize the number of OCPUs and amount of memory independently, and they are available for both AMD and Ampere Arm-based processors.

Answer

When you use a flexible shape, you must scale OCPUs and memory in a fixed, predefined ratio.

Answer

Flexible shapes are only supported with Intel Xeon processor families.

Answer

Flexible shapes cannot be resized once the compute instance has been provisioned.

Question 14

How do you improve the performance of a block volume attached to a compute instance?

Accepted Answer

Change volume performance tier. Changing the performance tier of a block volume (e.g., to Higher Performance) increases IOPS and throughput.

Answer

Add more RAM to instance

Answer

Increase subnets

Answer

Switch to a different VCN

Question 15

Which THREE of the following are primary benefits of using Object Storage?

Accepted Answer

High durability. Durability, scalability, and lifecycle management are key features of OCI Object Storage.

Answer

Real-time relational queries

Answer

POSIX-compliant file system