CNX-001 Exam Dumps - CompTIA CloudNetX Questions and Answers

Comprehensive and Detailed Explanation From Exact Extract:

A. An explicit allow rule in the Network Security Group (NSG) permitting Server A (10.2.3.9) to communicate with Server B (10.2.2.7) ensures intra-cloud communication between segments.

C. A deny rule that blocks any inbound access from external sources (0.0.0.0/0 → internal range 10.2.0.0/16) effectively prevents unsolicited inbound traffic from the public internet, securing the internal servers.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Cloud Security Groups and Firewall Policies”:

“NSGs should be configured with least privilege principles. Allow intra-subnet or intra-application communication while explicitly denying unsolicited internet traffic.”

“Ingress and egress filtering policies should block all traffic by default and permit only what’s required.”

Other options:

B. Incorrect – this allows internal range to internet, which is not requested.

D & E. Apply to outbound policies, not relevant to the need to block inbound external access.

F. Incorrect – this denies internal resources from going outbound, not inbound protection.

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Comprehensive and Detailed Explanation From Exact Extract:

nmap -A performs aggressive scanning, which includes OS detection, version detection, script scanning, and traceroute — exactly what is required in this case. It's the most effective and commonly used tool for comprehensive network reconnaissance prior to security testing.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Security Scanning and Reconnaissance Tools”:

“Nmap supports comprehensive scanning options, including OS fingerprinting, service version detection, and port scanning, enabling detailed pre-penetration testing assessments.”

Other options:

A. tcpdump is for packet capture, not scanning.

C. nc (netcat) is a port scanning tool, but it lacks OS/app detection.

D. hping3 is a packet generator, not suitable for full-service scanning.

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Comprehensive and Detailed Explanation From Exact Extract:

API throttling limits the number of requests a user or system can make in a given time frame. This ensures that no single customer overwhelms the service, maintaining fair access and stability for all users during peak usage periods. It is cost-effective as it avoids unnecessary resource scaling.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “API Management and Traffic Control”:

“Throttling allows for controlled usage of APIs, preventing service degradation and ensuring equitable access during high traffic periods.”

Other options:

A. Allow lists control access, not traffic volume.

B. Increasing VMs increases cost and may not scale linearly.

D. MTU settings affect packet size but not API-level fairness or traffic spikes.

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Comprehensive and Detailed Explanation From Exact Extract:

Infrastructure as Code (IaC) templates (e.g., Terraform, CloudFormation, ARM templates) allow for automated and repeatable VM deployments with preconfigured settings, includingnetworking, without requiring console access. This approach ensures consistency, security, and compliance.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Infrastructure as Code and Cloud Automation”:

“IaC enables declarative definition of cloud resources, supporting automated deployments that comply with organizational security and configuration policies.”

Other options:

B. SDKs require more complex coding and are less standardized.

C. API scripts are procedural and require manual management.

D. CLI is suitable for one-time use but not for repeatable deployments at scale.

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Comprehensive and Detailed Explanation From Exact Extract:

The best way to prevent unscheduled outages caused by Infrastructure as Code (IaC) changes is to implement automated review and approval gates in the CI/CD pipeline. This ensures that all changes undergo validation, peer review, testing, and possibly approval from stakeholders before being deployed, thus reducing the likelihood of production-impacting issues.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “CI/CD Security and IaC Controls”:

“Incorporating approval gates and automated validation into CI/CD pipelines helps detect misconfigurations and unauthorized changes before deployment, reducing the risk of outages.”

Other options:

A. Making changes directly to the master branch violates best practices.

B. Self-review (by the author) lacks objectivity and fails peer validation.

C. Forking creates a copy but does not introduce formal validation processes.

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Comprehensive and Detailed Explanation From Exact Extract:

D includes all the key elements of Zero Trust:

MFA (Multi-Factor Authentication) supports secondary passkey-based authentication.

Geolocation settings enforce geo-restrictions.

SSO federation allows use of an existing SAML identity provider.

Continuous access policies support dynamic reauthentication based on changes in posture.

Trusted endpoint policies ensure only corporate-owned, compliant devices are allowed to connect.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Zero Trust Architecture and Identity Management”:

“ZTA enforces continuous access policies that monitor session state, posture, and user behavior.”

“Federated identity with SSO and posture-based trust evaluation are core ZTA components.”

“Geo-restrictions and trusted endpoint policies limit exposure and enforce device compliance.”

Other options:

A uses static session tokens and disables timely expiration, violating Zero Trust principles.

B allows BYOD and disables auditing, which conflicts with compliance and monitoring.

Comprehensive and Detailed Explanation From Exact Extract:

SD-WAN (Software-Defined Wide Area Networking) is ideal for enterprises that want to simplify WAN management, reduce operational overhead, and optimize connectivity to cloudservices. SD-WAN provides intelligent traffic routing, dynamic path selection, and direct-to-cloud access without backhauling traffic through a central data center.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “SD-WAN and Cloud Connectivity”:

“SD-WAN enables efficient cloud access from branch offices and simplifies management through centralized policy control. It is cost-effective and reduces the need for complex hardware configurations and manual routing.”

Other options:

B. Adds latency and overhead by backhauling through headquarters.

C. MPLS is expensive and less flexible than SD-WAN.

D. Dark fiber is high-cost and not scalable for cloud-first architectures.

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Comprehensive and Detailed Explanation From Exact Extract:

Weighted load balancing allows distribution of traffic based on server capacity or assignedweights. In this case, the new node should receive a weight of 3, and each of the three older nodes a weight of 1. This ensures the new node handles the same total number of requests as the other three combined (3:1:1:1).

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Load Balancing Algorithms and Traffic Distribution”:

“Weighted load balancing accounts for node capacity, distributing requests proportionally according to performance capability or administrator-defined weights.”

Other options:

A. Round-robin sends traffic equally to all servers regardless of capacity.

B. Load-based requires dynamic performance measurement and is more complex.

C. Least connections may work in certain cases, but doesn’t guarantee proportional traffic split based on server performance.

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Comprehensive and Detailed Explanation From Exact Extract:

To meet the requirement of restricting inbound traffic and allowing outbound traffic, two components are most appropriate:

D. Firewall – A firewall enforces ingress and egress traffic policies. It can be configured to deny all inbound traffic by default and allow all outbound traffic, meeting the security policy requirement.

E. Network Security Group (NSG) – In cloud environments such as Azure, NSGs serve as virtual firewalls at the subnet or interface level. NSGs allow you to define rules that block or allow inbound and outbound traffic, and they are the preferred method for enforcing network access rules for cloud resources.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Cloud Network Security Configuration”:

“Network security groups and firewalls are key to enforcing inbound and outbound traffic restrictions in hybrid and public cloud environments.”

“NSGs are used to define network access control policies for cloud resources at the subnet or NIC level.”

Other options:

A. Application gateway controls HTTP/S traffic at Layer 7 but does not manage full access policy.

B. IPS detects/prevents malicious behavior but is not primarily used for general traffic restriction.

C. Port security restricts MAC addresses on switch ports, applicable in LANs, not cloud.

F. A screened subnet (DMZ) can provide additional isolation but is not required for basic traffic control.

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Comprehensive and Detailed Explanation From Exact Extract:

To better secure administrative interfaces, the best practice is to isolate them from the production network by connecting the management ports to a separate, dedicated management network. This prevents unauthorized access from devices or users on the production subnet and reduces the attack surface.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Securing Network Infrastructure”:

“Management interfaces should be placed on a separate out-of-band management network, providing physical and logical separation from user and data traffic.”

This ensures that only trusted devices on the management network can access the administrative interfaces.

Other options:

B. Disabling unused ports is good practice but does not address the segregation of management traffic.

C. Placing admin interfaces and production traffic on the same VLAN exposes them to potential internal threats.

D. Firmware upgrades are important for security patches but do not isolate the interface.

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