CCSK Exam Dumps - Cloud Security Alliance Cloud Security Knowledge Questions and Answers

Platform as a Service (PaaS) provides a development and deployment environment with resources that enable users to deliver everything from simple cloud-based apps to sophisticated, cloud-enabled enterprise applications.

According to CSA Security Guidance v4.0 – Domain 1: Cloud Computing Concepts and Architectures:

“PaaS adds an additional layer of integration with application development frameworks, middleware capabilities, and functions such as databases, messaging, and queuing. These services allow developers to build applications on the platform with programming languages and tools that are supported by the stack.”

(CSA Security Guidance v4.0, Domain 1)

This integration with app development and middleware is the key defining feature of PaaS.

SLAs play a key role in cloud incident management as they define response expectations and support arrangements between CSPs and CSCs. Reference: [CCSK Study Guide, Domain 11 - Incident Response]

In a Platform as a Service (PaaS) environment, the network security controls of the underlying Virtual Network (VNet) or Virtual Private Cloud (VPC) are often inherited by the PaaS services. This means that the network security settings, such as firewalls, security groups, and access control lists (ACLs), that are applied to the VNet/VPC also extend to the PaaS services, providing a seamless security model.

While PaaS services abstract much of the infrastructure management, they still interact with the network security controls in the VNet/VPC, allowing for centralized management of network security.

PaaS services typically do not override network security controls; they integrate with them. They do interact with VNet/VPC security controls, often integrate with network security controls, and do not always require separate manual configuration.

Classification and cataloging help assign security controls andmanage data based on its sensitivity and criticality. Reference: [CCSK v5 Curriculum, Domain 9 - Data Security]

IAM failures are a leading cause of cloud-native breaches, often due to misconfigurations or inadequate access control mechanisms. Reference: [Security Guidance v5, Domain 5 - IAM]

One of the biggest challenges incloud security risk assessmentisthe lack of transparencyregardingcloud provider operations and security controls.

Key Issues with Limited Visibility:

Cloud providers manage infrastructure at a global scale:

Customerscannot directly inspectsecurity implementations.

Rely onthird-party attestationslikeSOC 2, ISO 27001, CSA STARinstead of direct assessments.

Multi-tenancy complexities:

Cloud customersshare infrastructurewith other tenants.

Data isolation mechanisms (e.g., virtual private clouds, encryption)must be trustedwithout direct verification.

Regulatory compliance challenges:

Organizations handling sensitive data (e.g., healthcare, finance)requirestrict controls.

Cloud providers may not offer sufficient audit logsor control overdata residency and processing.

Incident response limitations:

In traditional IT, organizations controllog access, forensic analysis, and recovery.

In the cloud,incident investigation depends on the provider’s logging and notification practices.

Thisvisibility issueis extensively covered in:

CCSK v5 - Security Guidance v4.0, Domain 4 (Compliance and Audit Management)

ENISA’s Cloud Computing Risk Assessment (Limited visibility into cloud provider security policies)​

In multi-tenant technologies, the fundamental security requirement issegmented and segregated customer environments. Multi-tenancy means that multiple customers (tenants) share the same physical or virtual infrastructure while maintaining logical separation to prevent data leakage and unauthorized access between tenants.

To ensure security and compliance in multi-tenant environments, providers implement:

Network segmentation (VLANs, Virtual Private Clouds)

Isolation mechanisms (such as virtual firewalls and access control lists)

Data isolation through encryption and access controls

Hypervisor-based isolation in virtualized environments

The goal is to create stronglogical isolationbetween tenants to mitigate risks likedata leakage, guest-hopping attacks, and unauthorized access.

Why Other Options Are Incorrect:

B. Limited resource allocation:While resource limits may help performance management, they do not inherently ensure security in multi-tenant settings.

C. Resource pooling:Though fundamental to cloud computing, it does not address the isolation needed for secure multi-tenancy.

D. Abstraction and automation:These are key elements in cloud computing but do not directly address multi-tenant security.

DNS logs capture information on domain name resolution, while Flow logs capture details about network traffic, including source, destination, and protocol. Reference: [CCSK Study Guide, Domain 7 - Infrastructure & Networking]