1z0-1072-24 Questions and Answers

The principle of least privilege is a security best practice that dictates that users should only be granted the minimum set of permissions necessary to perform their tasks. This principle helps to minimize the risk of accidental or malicious actions that could compromise security.

IAM Policies in OCI:When creating IAM policies in OCI, you should carefully evaluate the required permissions and only grant those that are absolutely necessary for the users or groups to perform their specific roles. This helps to reduce the attack surface and prevent unauthorized access to sensitive resources.

References:

Oracle Cloud Infrastructure Documentation:Identity and Access Management (IAM) Best Practices

=================

When performing a multipart upload using the Multipart Upload API in Oracle Cloud Infrastructure (OCI) Object Storage, the following points are true:

C. Each part can be as large as 50 GiB:OCI allows each part of a multipart upload to be up to 50 GiB in size. This enables the efficient uploading of large objects in smaller, manageable parts.

D. You can keep adding parts as long as the total number is less than 10,000:The Multipart Upload API supports up to 10,000 parts for a single object. This allows the upload of very large objects by dividing them into multiple parts.

Incorrect Statements:

A.After uploading all parts, you must commit the upload to finalize the multipart upload and combine all parts into a single object.

B.The object must be split into parts before uploading when using the Multipart Upload API.

References:

Oracle Cloud Infrastructure Documentation:Multipart Uploads

=================

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.

References:

Oracle Cloud Infrastructure Documentation:VCN Overview

RFC 1918: Address Allocation for Private Internets

=================

A Dynamic Routing Gateway (DRG) in Oracle Cloud Infrastructure (OCI) is a virtual router that provides a path for private traffic between your on-premises network and your VCN, or between your VCN and other VCNs. The resources that can be attached to a DRG include:

A. Virtual Circuits:Used to establish a private connection between your on-premises data center and your VCN via Oracle’s FastConnect service.

D. Remote Peering Connections:Enables peering between VCNs located in different regions (Remote VCN Peering).

E. IPSec Tunnel:Facilitates secure VPN connections between your on-premises network and your OCI VCN.

References:

Oracle Cloud Infrastructure Documentation:Dynamic Routing Gateway Overview

=================

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.

References:

Oracle Cloud Infrastructure Documentation:IAM Policies

=================

In Oracle Cloud Infrastructure (OCI) Identity and Access Management (IAM), administrator roles play a significant role in managing access:

Simplification of Access Management: Utilizing administrator roles allows you to simplify access management by eliminating the need to create complex IAM policies manually. These roles come with predefined permissions that cover common administrative tasks, reducing the effort needed to manage access controls.

Granular Control: While administrator roles provide a broad range of permissions, they may not offer the same level of granularity as custom policies.

Other Benefits:

Offer a wider range of permission combinations (A): While custom policies can offer more specific combinations, administrator roles are designed to cover a broad range of tasks.

Granting Access Outside Identity Domain (C): Administrator roles are generally scoped to their identity domain and do not provide cross-domain access.

Granular Control (D): Although administrator roles simplify management, custom policies are typically used when granular control over specific compartments or resources is needed.

Relevant OCI Documentation:

OCI IAM Roles Overview

This resource provides detailed information on how roles and policies are used in OCI to manage access.

=================

In Oracle Cloud Infrastructure (OCI), there are two primary types of capture filters used for network monitoring:

Flow Log Capture Filters:These filters are used to capture and log network flow information (e.g., source and destination IP addresses, ports, protocols). Flow logs provide insights into the traffic patterns within your VCN.

VTAP Capture Filters:Virtual Test Access Point (VTAP) capture filters allow you to capture and inspect traffic from specific network interfaces or subnets without affecting the flow of traffic. This is particularly useful for deep packet inspection and monitoring purposes.

References:

Oracle Cloud Infrastructure Documentation:Flow Logs

Oracle Cloud Infrastructure Documentation:VTAP

=================

TheInfrequent Access tierin OCI Object Storage is suitable for storing backups that need to be immediately accessible and retained for a specific period, such as 31 days, while also minimizing costs. This tier offers a balance between cost and accessibility, charging lower storage costs compared to the Standard tier but still allowing quick access to the data.

Use Case:The Infrequent Access tier is designed for data that is not frequently accessed but must remain readily available when needed, making it ideal for backup storage.

References:

Oracle Cloud Infrastructure Documentation:Object Storage Tiers

=================

On-demand capacity is the compute capacity type in Oracle Cloud Infrastructure (OCI) that allows you to provision and use compute instances whenever needed, without any long-term commitment. This flexibility is ideal for various workloads, including development, testing, and production environments, where immediate availability and scalability are crucial.

Key Points:

On-Demand Capacity:On-demand compute instances provide users with the flexibility to spin up instances as required and only pay for the time the instances are running. This model is most suitable for workloads with unpredictable usage patterns or short-term requirements.

Flexibility and Scalability:With on-demand capacity, you can quickly scale your resources up or down based on your application's needs, ensuring that you only pay for the resources you actually use.

No Commitment:Unlike reserved capacity, on-demand capacity does not require any long-term commitment or upfront payment, making it an attractive option for organizations looking to avoid capital expenditures.

References:

Oracle Cloud Infrastructure Documentation:OCI Compute Pricing

Oracle Cloud Infrastructure Documentation:Compute Instance Lifecycle

Explanation of Incorrect Options:

A. Capacity reservation:This option allows you to reserve capacity in advance, ensuring that resources are available when needed. It's ideal for predictable workloads but may not be as cost-effective for fluctuating demands.

B. Preemptible capacity:Preemptible instances are a lower-cost option where instances can be terminated by OCI if resources are needed elsewhere. This is suitable for non-critical workloads that can tolerate interruptions.

D. Dedicated host:Dedicated hosts provide physical servers for your exclusive use, offering isolation and predictable performance. This option is more suitable for workloads requiring dedicated resources or compliance needs.

Thus,Option C: On-demand capacityis the correct choice for most general-purpose workloads needing flexibility and immediate availability without long-term commitment.

=================

The following statements about OCI burstable instances areNOT correct:

A. Burstable instances cost less than regular instances:This is incorrect because burstable instances are not necessarily cheaper; the cost depends on the baseline utilization. While they allow for cost efficiency when running at a lower CPU baseline, they can become more expensive if frequently bursting above the baseline.

B. Burstable instances are charged according to the baseline OCPU:This is incorrect because burstable instances are billed based on actual OCPU usage, which includes both baseline and burst usage. If an instance frequently operates above its baseline, the cost will reflect this higher usage.

Correct Concepts:

C.Burstable instances can temporarily use more CPU than their baseline if the average CPU utilization is below the baseline.

D.Baseline utilization is a fraction of each CPU core, which determines the level of consistent performance available without bursting.

References:

Oracle Cloud Infrastructure Documentation:Burstable Instances

=================