Pass the CompTIA CloudNetX CNX-001 Questions and answers with CertsForce

Comprehensive and Detailed Explanation From Exact Extract:

The traceroute shows that the traffic successfully passes through the application development network (192.168.2.1), to the server segment gateway (192.168.1.1), and reaches the serversegment firewall (192.168.4.1). However, it times out immediately after hitting 192.168.4.1, indicating that the traffic is being dropped or filtered at that firewall.

Because other users (outside of the application development segment) are able to SSH into the database server (192.168.1.9), the issue is not with the database server itself or the core network. This points to the server segment firewall blocking traffic originating from the application development subnet (192.168.2.0/24), which is a common practice in segmented network designs unless proper access rules are defined.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Network Segmentation and Firewall Rules”:

“Firewalls between network segments may enforce security policies that restrict access based on source/destination IP and port. Lack of proper allow rules can result in blocked traffic even if routing is successful.”

Other options:

A. The core firewall is not in the traceroute path; it is irrelevant to this specific flow.

B. NSGs (Network Security Groups) apply to cloud workloads, but the behavior and hop-by-hop flow suggest it is a firewall-level issue, not NSG misconfiguration.

D. Bandwidth issues would typically show packet loss or high latency, not consistent timeouts at a specific hop.

Comprehensive and Detailed Explanation From Exact Extract:

A mesh topology provides multiple redundant paths between nodes. It offers the highest availability and fault tolerance by allowing communication to continue even if one or more links or nodes fail. This is especially important in rural healthcare systems where reliability and access to critical services are paramount.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Network Topologies and Redundancy Models”:

“Mesh topologies provide optimal fault tolerance and support consistent data transmission through redundant links, ideal for mission-critical systems.”

Other options:

A. Collapsed core is cost-efficient but not fully redundant.

B. Hub-and-spoke introduces a single point of failure at the hub.

D. Star also relies on a central node and is not fault tolerant.

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Firewalls → VPN tunnel down

The IPsec tunnel between on-prem Firewall 1 and cloud Firewall 2 (ipip0/ipip2) is down, so no traffic can traverse to the cloud.

Application NSG → Misconfigured rule

There’s a “block” rule for 10.3.9.0/24 → 192.2.1.0/24, preventing legitimate on-prem clients from reaching Application A.

Comprehensive and Detailed Explanation From Exact Extract:

To allow private IP-based communication between internal servers and cloud applications over asite-to-site VPN, private DNS resolution is necessary. The internal DNS server can be configured to forward specific DNS queries (for cloud-based applications) to a DNS server located in the cloud. This ensures applications can be resolved to private IPs, not public ones.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Hybrid Networking and DNS Integration”:

“To support name resolution over hybrid connections like site-to-site VPN, enterprises should configure conditional forwarding to cloud-based DNS servers. This allows internal devices to resolve private IP addresses for cloud-based resources.”

Other options:

B. NAT introduces complexity and may hide source IPs, which is not required in this case.

C. Public DNS names map to public IPs, violating the requirement.

D. A proxy is not needed if direct private IP-based access is available via VPN.

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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:

Geofencing allows enforcement of access policies based on the geographic location of the user's IP address. To comply with GDPR and control access based on user region, geofencing should be implemented to restrict or permit access to resources hosted in specific regions like Europe.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Data Sovereignty and Regional Access Control”:

“Geofencing enables organizations to restrict access to data or services based on geographic IP address, aiding in GDPR and other compliance frameworks.”

Other options:

A. SASE is a broader framework, not a direct access control mechanism.

B. NSGs operate at subnet/NIC level and do not interpret geolocation.

C. CDNs cache data globally but don’t control access by region directly.

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Comprehensive and Detailed Explanation From Exact Extract:

Spanning Tree Protocol (STP) is a Layer 2 protocol that prevents loop conditions in redundant switch topologies. It automatically disables redundant links in a controlled way, allowing one active path at a time. When a switch fails, STP recalculates and activates an alternate path. In this case, loops are detected, but no broadcast storms occurred, indicating that STP is not in place or not configured properly. Implementing STP is a low-cost and effective solution to resolve these issues.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Switching Technologies and Loop Prevention”:

“STP prevents switching loops by dynamically identifying and disabling redundant paths. When a link failure occurs, STP re-converges to restore network connectivity.”

“STP is an essential protocol in redundant Layer 2 topologies to avoid broadcast and loop issues.”

Other options:

A. A Layer 3 switch adds routing functionality but does not prevent Layer 2 loops.

B. VLANs segment broadcast domains but do not inherently prevent physical loops.

D. Tagging (e.g., VLAN tagging) helps with segmentation but not with loop prevention.

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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:

Data Loss Prevention (DLP) solutions scan messages and file transfers for sensitive data patterns, such as credit card numbers or social security numbers. DLP can block, log, or alert when such information is detected attempting to leave the organization.

Relevant Extract from CompTIA CloudNetX CNX-001 Study Guide — under “Data Protection and Compliance Controls”:

“DLP systems identify and restrict the transmission of sensitive data such as credit card numbers, enforcing organizational data handling policies.”

Other options:

A. IDS detects threats but doesn’t enforce data content policies.

B. Egress filtering restricts destinations but not content.

D. Encryption protects data in transit, not its content compliance.

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Comprehensive and Detailed Explanation From Exact Extract:

Quality of Service (QoS) rules at the internet router can prioritize VoIP traffic over other data, such as cloud document access. VoIP is sensitive to latency and jitter, and configuring QoS ensures that voice packets are prioritized during congestion. This is the most cost-effective solution that doesn’t require additional infrastructure.

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

“QoS policies are essential for ensuring that latency-sensitive traffic, such as VoIP, is prioritized over other types of data, particularly in bandwidth-limited scenarios.”

Other options:

A. Adding a second internet link is effective but not cost-efficient.

C. VLANs provide segmentation but don’t guarantee bandwidth prioritization.

D. Changing the codec may reduce bandwidth usage, but doesn’t address prioritization directly.

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