1Z0-1072-26 Storage — Timed 50 Questions

Question 1

A company is running an enterprise application on OCI that requires high IOPS and low latency for its database files. The administrator needs to attach a block volume that can dynamically scale performance beyond its default capacity limits without having to detach the volume. Which Block Volume performance level should be selected?

50 minute time limit — choose an answer to begin.

Accepted Answer

Ultra High Performance. Oracle Cloud Infrastructure (OCI) Block Volume service provides four performance levels: Lower Cost, Balanced, Higher Performance, and Ultra High Performance. Among these, Ultra High Performance is designed for the most demanding workloads requiring the highest IOPS and throughput, and OCI allows users to dynamically scale performance levels (including moving up to Ultra High Performance) and resize volumes without detaching them or experiencing downtime.

Answer

Higher Performance

Answer

Lower Cost

Answer

Balanced

Question 2

An administrator has created a File Storage Service (FSS) file system in a private subnet. Developers need to mount this file system on compute instances across three different availability domains within the same region. What is the correct way to configure network access for FSS?

Accepted Answer

Deploy a mount target in one subnet and configure security lists to allow NFS traffic from instances in all required subnets.. FSS is regional and can be mounted across availability domains in the same region, provided that mount targets are accessible via appropriate security lists and subnet routes.

Answer

Attach the Block Volume to multiple instances simultaneously across availability domains.

Answer

Create a separate FSS file system in each availability domain and peer them.

Answer

Use an OCI FastConnect circuit to route NFS traffic between availability domains.

Question 3

You need to configure an Object Storage lifecycle policy to automatically transition objects from the Standard tier to the Infrequent Access tier after 30 days, and then delete them after 365 days from creation. How should the rule be defined?

Accepted Answer

Create a single rule with transition after 30 days to Infrequent Access and deletion after 365 days.. Lifecycle rules use offset values based on object creation time. Transition and deletion rules can be chained by specifying days relative to the object's age.

Answer

Configure an event rule in OCI Events Service to trigger a function that modifies the storage tier after 30 days.

Answer

Set the bucket storage policy to automatically purge objects after 365 days and use Object Versioning to handle the 30-day tier shift.

Answer

Create two separate rules: one for transition at 30 days and another rule evaluated independently for deletion at 335 days.

Question 4

You are troubleshooting an issue where an application cannot access an OCI Object Storage bucket. The IAM policies are verified as correct, and the object storage endpoint is reachable. However, the client receives HTTP 403 Forbidden errors when attempting to perform a GET request. The bucket is private. What could be causing this?

Accepted Answer

The OCI KMS master encryption key associated with the bucket has been disabled or scheduled for deletion.. If a bucket is private and public access is blocked or IAM policies check out, pre-authenticated requests (PAR) or missing object-read permissions, or VCN Service Gateway restrictions could cause 403 errors. Another common cause is customer-managed encryption key state changes (e.g., the KMS key was disabled).

Answer

The VCN lacks an Internet Gateway, and traffic is attempting to go over the public internet.

Answer

The bucket name is not globally unique within the tenancy.

Answer

The Object Storage bucket is configured in the Infrequent Access tier instead of Standard.

Question 5

What is the maximum size of a single object that can be uploaded to OCI Object Storage using a single PUT request?

Accepted Answer

50 GiB. For standard single PUT operations, the maximum object size is 50 GiB. Larger files require multipart uploads.

Answer

10 TiB

Answer

5 TiB

Answer

100 GiB

Question 6

An administrator wants to automate the process of copying Block Volume backups from the Ashburn region to the Phoenix region for disaster recovery purposes. What is the recommended method?

Accepted Answer

Attach a cross-region replication policy to the Block Volume backup policy.. Block Volume backups can be configured for automatic cross-region replication by setting up a backup policy with copy rules to destination regions.

Answer

Manually export the volume to an Object Storage bucket and download it in the second region.

Answer

Configure an OCI Object Storage lifecycle rule to replicate files across regions.

Answer

Write an OCI Data Flow application to stream volume blocks across regions.

Question 7

A company needs to migrate 50 TB of on-premises NAS data into OCI Object Storage over a high-speed dedicated network connection. Which OCI service should be utilized for this network-based transfer?

Accepted Answer

OCI Storage Gateway. OCI Storage Gateway or File Transfer tools over FastConnect are options, but for direct high-speed object ingestion, OCI Storage Gateway or parallelized CLI/API multipart uploads over FastConnect are standard. Specifically, for migrating NAS data directly, OCI Storage Gateway allows on-premises applications to interact with OCI Object Storage.

Answer

OCI Data Transfer Appliance

Answer

OCI File Storage Service Mount Target

Answer

OCI Archive Storage Uploader

Question 8

Which THREE statements are true regarding OCI Object Storage architecture and data durability? (Choose three.)

Accepted Answer

Checksums are automatically calculated and verified for data integrity.. Option A is correct because OCI Object Storage automatically computes and verifies checksums (such as MD5) on data to detect corruption and ensure integrity during upload and retrieval. Option B is correct because in a multi-AD region, Object Storage distributes data across availability domains, providing resilience against an AD-level failure. Option D is correct because OCI Object Storage synchronously replicates data across multiple fault domains within a region, so writes are durable before acknowledgment. Option C is not correct because OCI Object Storage provides read-after-write consistency for object operations and strong consistency for bucket listing, not eventual consistency. Option E is not correct because Object Storage supports very large objects, including multipart uploads for objects up to 10 TiB, so objects larger than 50 GiB do not need Block Volume.

Answer

Object Storage provides eventual consistency for bucket listing operations.

Answer

Objects larger than 50 GiB must be stored using Block Volume instead.

Question 9

When designing an OCI Block Volume backup strategy, which THREE statements are correct regarding backup types and management? (Choose three.)

Accepted Answer

Automatic backup policies allow defining schedules such as Bronze, Silver, and Gold tiers.. Option A is correct because OCI Block Volume backup policies are predefined schedule tiers named Bronze, Silver, and Gold (plus a Custom policy option), which let you automate backup frequency and retention without writing scripts. Option B is correct because OCI incremental backups are block-level and capture only the blocks that changed since the last backup, whether that prior backup was full or incremental, which reduces storage consumption and backup time. Option E is correct because restoring a block volume backup creates a new block volume, and you can specify a larger volume size than the original during that restore (you cannot shrink below the original size). Option C is wrong because policies can include full backups, and full backups can also be triggered manually or via the API/CLI, not only incrementals. Option D is wrong because block volume backups are stored in OCI Object Storage, not in File Storage Service file systems.

Answer

Full backups must be manually triggered because policies only support incremental backups.

Answer

Block volume backups are stored in File Storage Service file systems by default.

Question 10

An enterprise application requires long-term compliance retention for regulatory records stored in OCI Object Storage. The administrator must ensure that stored objects cannot be modified, overwritten, or deleted by any user, including administrators, for a mandated retention period. Which feature should be used?

Accepted Answer

Object Storage Object Lock (Retention Rules). Object Storage Object Versioining combined with Object Storage Object Lifecycle Rules or Object Lock (Retention Rules) prevents accidental or malicious deletion or modification of data for regulatory compliance.

Answer

Block Volume Replication

Answer

IAM Policy with Deny DELETE statements

Answer

Object Storage Bucket Access Policy with Read-Only permissions

Question 11

An administrator needs to restore an encrypted block volume backup to a different Availability Domain within the same OCI region. How should this be achieved?

Accepted Answer

Directly select the existing backup in the console and choose to restore it to a volume in the target Availability Domain.. Block volume backups in OCI are stored in Object Storage and are automatically available across all Availability Domains within the same region. The administrator can directly restore the backup to a volume in any AD within that region.

Answer

Copy the backup to the target region first, then restore it.

Answer

Export the backup to an Object Storage bucket, download it on-premises, and re-upload it to the new AD.

Answer

Create a volume clone in the source AD and attach it across ADs.

Question 12

A company requires an extremely low-cost storage solution for data archiving that is rarely accessed, with a retrieval time requirement of within an hour. Which OCI storage tier should be used?

Accepted Answer

Archive Storage Tier. OCI Archive Storage is the lowest-cost tier, designed for data rarely accessed and retained for long periods. Its retrieval time is within one hour for standard restore, which meets the stated requirement. It's the correct choice when cost is the primary driver and sub-hour retrieval is acceptable.

Answer

Block Volume Performance Level 'Lower Cost'

Answer

Object Storage Standard Tier

Answer

Object Storage Infrequent Access Tier

Question 13

An administrator created a file system using the File Storage Service (FSS) and needs to control access from specific compute instances using Network Security Groups (NSGs) and security lists. Which component of FSS must be configured to enforce network-level security and access permissions?

Accepted Answer

Mount Target Export Options. Export options are used in File Storage Service to control access to file systems from mount targets, allowing restriction by source IP addresses, virtual cloud networks, and root squashing privileges.

Answer

Volume Group Backup Policy

Answer

IAM Dynamic Groups

Answer

Bucket Access Policy

Question 14

Which feature allows you to restrict access to an Object Storage bucket to only specific VCNs?

Accepted Answer

Bucket Policies. In Oracle Cloud Infrastructure (OCI), Object Storage Bucket Policies allow you to grant and restrict access to buckets based on specific conditions, such as allowing access only from specific Virtual Cloud Networks (VCNs) or source IP addresses using conditions like target.vcn.id.

Answer

Encryption

Answer

Object Versioning

Answer

Lifecycle Rules

Question 15

Which OCI storage service is best suited for big data workloads requiring high throughput?

Accepted Answer

Object Storage. Oracle Cloud Infrastructure (OCI) Object Storage is the primary storage service best suited for big data workloads, data lakes, and analytics, offering high throughput and scalability. While Block Volume provides high throughput for databases and virtual machine boot/data volumes, Object Storage is the industry standard and OCI recommendation for big data workloads.

Answer

Archive Storage

Answer

Block Volume

Answer

File Storage

Question 16

What is the maximum size of a single Object in OCI Object Storage?

Accepted Answer

10 TB. The maximum object size supported is 10 TiB.

Answer

Unlimited

Answer

1 TB

Answer

1 GB

Question 17

A Block Volume backup failed. Which is the most likely reason?

Accepted Answer

Insufficient IAM permissions. Block Volume backup failures are frequently caused by missing or insufficient Identity and Access Management (IAM) permissions for the user or service principal attempting to create the backup, or because the volume is currently attached and locked in an incompatible state (though permissions are the primary administrative failure point among the choices).

Answer

Bucket size limit

Answer

FastConnect is down

Answer

File system is mounted

Question 18

Which tier of Block Volume performance allows you to dynamically adjust the IOPS/GB?

Accepted Answer

Balanced. Balanced and Higher Performance tiers allow dynamic adjustment of performance settings.

Answer

Lower Cost

Answer