Important Oracle 1Z0-1072-25 Exam Questions

Answer: A, D

Explanation:

RFC 1918 defines IP address ranges that are reserved for private networks, which cannot be routed on the public internet. In Oracle Cloud Infrastructure (OCI), these private IP address ranges can be used to create Virtual Cloud Networks (VCNs). The valid RFC 1918 CIDR prefixes include:

192.168.0.0/16: A private IP range often used in home networks.

10.0.0.0/8: A large private IP range commonly used in enterprise networks.

Invalid Options:

B . 0.0.0.0/0: This CIDR represents all IP addresses and is not a valid private IP range.

C . 192.268.0.0/24: This is not a valid IP address range as the octet '268' is outside the allowable range of 0-255.

Oracle Cloud Infrastructure Documentation: VCN Overview

RFC 1918: Address Allocation for Private Internets

Answer: A

Explanation:

In Oracle Cloud Infrastructure (OCI), cross-region access is facilitated by configuring IAM policies that grant users or groups permissions to access resources in other regions. IAM policies in OCI are global, meaning they apply across all regions by default. However, an administrator can specifically configure these policies to allow or restrict access to resources in different regions.

Example: An administrator can write a policy that allows a user to manage compute instances in a specific region by including the region's name in the policy statement.

Oracle Cloud Infrastructure Documentation: IAM Policies

Answer: D

Explanation:

In Oracle Cloud Infrastructure (OCI), block volumes are designed to be highly flexible and can be used in various ways:

A . Restoring from a volume backup to a larger volume: This is supported and allows for resizing during the restoration process.

B . Cloning an existing volume to a new, larger volume: You can clone a block volume and specify a larger size for the new volume.

C . Expanding an existing volume in place with offline resizing: OCI allows you to increase the size of an existing block volume without needing to take it offline.

Option D is NOT valid because block volumes can only be attached to compute instances within the same availability domain. Cross-availability domain attachment of block volumes is not supported directly.

Oracle Cloud Infrastructure Documentation: Block Volume Overview

Answer: A

Explanation:

To calculate the monthly cost for 7 Petabytes (PB) of outbound data transfer at a rate of $0.0085 per GB in North America:

Calculation:

1 PB = 1,000,000 GB

7 PB = 7,000,000 GB

Cost = 7,000,000 GB * $0.0085/GB = $59,500.00

Thus, the cost for 7 PB of outbound data transfer per month is $59,500.00.

Oracle Cloud Infrastructure Pricing: OCI Pricing

Answer: B

Explanation:

In Oracle Cloud Infrastructure (OCI) File Storage, when you overwrite a portion of a file, the service does not immediately reclaim the space occupied by the previous version of the file. The total meteredBytes reflects both the original data and the new data written.

Scenario Explanation: You start with a 1 GB file. When you overwrite 0.5 GB of this file, the file system retains both the 0.5 GB of the original file and the new 0.5 GB you wrote.

Calculation: The original 1 GB file contributes 1 GB to meteredBytes. When 0.5 GB is overwritten, the total usage becomes 1.5 GB (1 GB original + 0.5 GB new).

Thus, after the hourly update cycle, the total meteredBytes shown by the File Storage service will be 1.5 GB.

Oracle Cloud Infrastructure Documentation: File Storage Service Overview