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  1. Security+ Practice Tests
  2. Security+ Cram Notes
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Systems and Security : Architecture and Design

1.2 Virtualization and cloud computing concepts

Resource Policies

Resource policies are sets of rules and guidelines that define how cloud resources can be used and managed. Resource policies help organizations enforce security and compliance requirements, manage cost, and control access to cloud resources.

Transit Gateway

A transit gateway is a network hub that provides a centralized connection point for multiple VPCs. This allows organizations to create a scalable and secure network architecture that spans multiple VPCs and provides a single entry point for traffic entering and exiting the network. Transit gateways can also be used to simplify network management, reduce operational costs, and improve network security.

Virtualization

Virtualization: Virtualization is the process of creating a virtual version of a resource, such as a operating system, server, storage device, or network, in order to optimize resource usage and minimize hardware and operational costs. Virtualization allows multiple virtual resources to run on a single physical machine, which can increase operational efficiency and reduce costs by allowing organizations to consolidate resources and reduce the number of physical servers they need to maintain.

Virtual Machine (VM): A virtual machine is a software implementation of a physical computer that runs its own operating system and applications as if it were a separate physical machine. Virtual machines provide an isolated and secure environment for running applications and services, allowing organizations to run multiple virtual machines on a single physical machine, which can help reduce hardware costs and improve operational efficiency.

Virtual Machine Sprawl Avoidance: Virtual machine sprawl occurs when an organization creates too many virtual machines, leading to over-provisioning, resource inefficiency, and increased costs. Virtual machine sprawl avoidance is the process of implementing strategies and controls to manage the growth of virtual machines, ensuring that they are deployed in a controlled and efficient manner and that their use is optimized.

Virtual Machine Escape Protection: Virtual machine escape protection is a set of security measures and technologies that prevent attackers from breaking out of a virtual machine and accessing the underlying physical infrastructure. This can help prevent data theft and other security breaches, ensuring that virtual machines remain isolated and secure.

1.3 Secure application development, deployment, and automation concepts.

Secure application development, deployment, and automation concepts are practices and processes that aim to ensure the security and reliability of software applications throughout their development, deployment, and maintenance lifecycle. These concepts are critical for ensuring that applications are protected against cyber threats, vulnerabilities, and other security risks.

Some key concepts in secure application development, deployment, and automation include:

1. Secure Development Lifecycle (SDL): This is a systematic and comprehensive approach to software development that incorporates security into every stage of the software development process.

2. Threat modeling: This is the process of identifying potential security threats to an application and developing strategies to mitigate those threats.

3. Vulnerability scanning: This is the process of using automated tools to identify vulnerabilities in an application and its underlying infrastructure.

4. Code reviews: This is the process of reviewing code for security vulnerabilities and making changes to improve security.

5. Continuous integration/continuous delivery (CI/CD): This is a DevOps practice that automates the software development and deployment process, making it faster and more efficient while also reducing the risk of human error.

6. Automated testing: This is the process of using automated tools to test software applications and ensure they meet security and quality standards.

7. Access control: This is the process of managing who has access to software applications and data, and what actions they can perform.

8. Network security: This is the process of securing networks against cyber threats, such as intrusion attempts and data theft.

9. Encryption: This is the process of converting plaintext data into encrypted data that can only be decrypted with a secret key.

By following these secure application development, deployment, and automation concepts, organizations can ensure that their software applications are developed, deployed, and maintained in a secure and reliable manner.


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