312-40 Exam Results

AWS IAM Roles: AWS Identity and Access Management (IAM) roles allow for permissions to be assigned to AWS resources without the use of static credentials. Roles provide temporary credentials that are automatically rotated.

Service Role: The ‘get-pics’ service role created by Rebecca includes a permission policy for read-only access to the S3 bucket and a trust policy that allows the EC2 instance to assume the role.

Temporary Credentials: When the application runs on the EC2 instance, it uses the temporary credentials provided by the role to access the S3 bucket. These credentials are dynamically provided and do not require developer management.

Developer and Admin Roles: Since the EC2 instance has the necessary permissions through the service role, the developer does not need to manage credentials. Similarly, the admin does not need to grant explicit permission to the developer because the permissions are already encapsulated within the role.

Security Best Practices: This approach adheres to AWS security best practices by avoiding the sharing of static credentials and minimizing the need for manual credential management.

References:

AWS’s official documentation on IAM roles.

Rufus has created a RAID 0 array, which is characterized by the following features:

Performance: RAID 0 is known for its high performance in both read and write operations because it uses striping, where data is split evenly across two or more disks without parity information.

No Overhead by Parity Control: RAID 0 does not use parity control, which means there is no redundancy in the data. This contributes to its high performance but also means there is no fault tolerance.

Storage Capacity: The total storage capacity of a RAID 0 array is equal to the sum of all the disk capacities in the set, as there is no disk space used for redundancy.

Lack of Fault Tolerance: RAID 0 is not fault-tolerant; if one disk fails, all data in the array is lost. Therefore, it is not recommended for critical data storage.

Use Case: It is ideal for non-critical data that requires high-speed reading and writing, such as temporary files or cache data.

References:RAID 0 is often used to improve the performance of disk I/O (input/output) and is suitable for environments where speed is more critical than data redundancy. However, due to its lack of fault tolerance, it is not recommended for storing critical data that cannot be easily replaced or recovered.

Daffod, as an American cloud service provider complying with the cloud computing law that emphasizes the importance of information security for economic and national security interests, adheres to the Federal Information Security Management Act (FISMA). Here's why:

FISMA Overview: FISMA is a US law enacted to protect government information, operations, and assets against natural or man-made threats.

Importance of Information Security: FISMA requires that all federal agencies develop, document, and implement an information security and protection program.

Relevance to Daffod: As Daffod complies with this law, it ensures that its cloud services are secure and adhere to national security standards, making it a trusted provider for secure and cost-effective cloud services.

References:

NIST SP 800-53: Security and Privacy Controls for Information Systems and Organizations

Federal Information Security Modernization Act (FISMA)

The CSA CCM (Cloud Controls Matrix) Framework is a cybersecurity control framework for cloud computing, developed by the Cloud Security Alliance (CSA). It is designed to provide a structured and standardized set of security controls that help organizations assess the overall security posture of their cloud infrastructure and services.

Here’s how the CSA CCM Framework serves as a tool for cloud risk management:

Comprehensive Controls: The CCM consists of 197 control objectives structured in 17 domains covering all key aspects of cloud technology.

Risk Assessment: It can be used for the systematic assessment of a cloud implementation, providing guidance on which security controls should be implemented.

Alignment with Standards: The controls framework is aligned with the CSA Security Guidance for Cloud Computing and other industry-accepted security standards and regulations.

Shared Responsibility Model: The CCM clarifies the shared responsibility model between cloud service providers (CSPs) and customers (CSCs).

Monitoring and Measurement: The CCM includes metrics and implementation guidelines that help define what should be measured and the acceptable variance for risks.

References:

CSA’s official documentation on the Cloud Controls Matrix (CCM), which outlines its use as a tool for cloud risk management1.

An article providing a checklist for CSA’s Cloud Controls Matrix v4, which discusses how it can be used for managing risk in cloud environments2.