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Question 141.

An administrator wants traffic from a trusted backup network to bypass the normal access control policy and deeper inspection for performance reasons. Which Cisco Secure Firewall feature is most appropriate?

1. Configure a prefilter rule with a Fastpath action for the specifically trusted traffic
   2. Create a file policy that permits all files
   3. Disable Snort inspection globally
   4. Configure Dynamic PAT for the backup network

Correct Answer: 1

Explanation:

A prefilter policy can make early traffic-handling decisions before traffic reaches the normal access control policy. A Fastpath action can be appropriate for explicitly trusted traffic that does not require additional application, intrusion, or file inspection. Because Fastpath reduces security visibility, the rule should be narrowly defined using appropriate zones, networks, protocols, or other conditions rather than applied broadly. Disabling Snort globally would weaken protection for unrelated traffic, and a file policy controls transferred files rather than bypassing the inspection path. Dynamic PAT changes source addresses and ports but does not determine whether deep inspection occurs. Prefilter Fastpath is therefore the appropriate mechanism when an administrator intentionally wants selected trusted traffic to avoid later processing for performance reasons.

Question 142.

A Threat Defense device is managed by Secure Firewall Management Center. An administrator changes an access control rule and verifies that the rule appears correctly in Management Center, but the sensor continues enforcing the old policy. What is the most likely cause?

1. The Snort engine must be manually restarted after every policy edit
   2. All interfaces must be administratively shut and enabled again
   3. The access control policy must be recreated from scratch
   4. The configuration change has not been deployed to the managed Threat Defense device

Correct Answer: 4

Explanation:

Secure Firewall Management Center maintains a distinction between saved configuration changes and deployed configurations. Editing and saving an access control policy modifies the policy stored in Management Center, but the managed Threat Defense device does not enforce that new configuration until a deployment is completed. The administrator should review pending changes, select the affected device, start the deployment, and verify that the deployment succeeds. Routine policy edits do not require manually restarting Snort, bouncing interfaces, or rebuilding the entire policy. If a deployment fails, the deployment task details can be reviewed for errors. Understanding this workflow is essential because a perfectly configured rule can appear ineffective simply because the updated policy has not yet been pushed to the enforcement device.

Question 143.

Which Cisco Secure Firewall component is responsible for inspecting traffic with Snort-based signatures to detect exploit attempts and protocol violations?

1. NAT engine
   2. Routing process
   3. Intrusion prevention engine
   4. High-availability subsystem

Correct Answer: 3

Explanation:

The intrusion prevention engine uses Snort-based inspection to analyze traffic for known attack patterns, exploit attempts, protocol anomalies, and other suspicious behavior. Administrators manage this behavior through intrusion policies that determine which rules are enabled and how matching traffic is handled. The NAT engine translates addresses and ports, while the routing process determines where packets should be forwarded. High availability provides appliance redundancy and failover capabilities. None of these other components performs signature-based exploit detection. Properly configured intrusion prevention allows permitted traffic to be inspected after the access control decision, giving the organization the ability to detect or block attacks without having to deny all application connectivity.

Question 144.

An administrator needs to permit outbound web traffic but wants the firewall to inspect matching sessions using an intrusion policy and a file policy. Which access control action should be configured?

1. Trust
   2. Allow
   3. Block
   4. Interactive Block

Correct Answer: 2

Explanation:

The Allow action permits matching traffic while still allowing additional inspection stages to be applied. An administrator can associate an intrusion policy and a file policy with an Allow rule so that web traffic is permitted but still inspected for exploits and transferred files. Trust is different because matching traffic bypasses further deep inspection, which would prevent the required security analysis. Block denies the connection entirely, while Interactive Block is intended for web-warning workflows. The Allow action is therefore the appropriate choice when the organization needs both connectivity and security inspection. Administrators should also enable suitable connection and security-event logging so that policy behavior and detected threats can be reviewed later.

Question 145.

A company wants to prevent users from visiting websites categorized as malware, phishing, and gambling without maintaining individual URL lists manually. Which capability should be configured?

1. URL filtering within the access control policy
   2. Static routing
   3. Dynamic PAT
   4. High availability

Correct Answer: 1

Explanation:

URL filtering allows Secure Firewall administrators to enforce web policy based on URL categories and reputation. Instead of manually maintaining lists of individual websites, an organization can create access control conditions for categories such as malware, phishing, gambling, or other restricted content. This is more scalable because new websites can be categorized dynamically as intelligence changes. URL filtering can also be combined with application, user, network, and zone conditions for more granular policy. Static routing controls packet forwarding, Dynamic PAT translates addresses and ports, and high availability provides device redundancy. None of these performs content-category-based web filtering. URL filtering is therefore the correct capability when the goal is to manage web access according to destination categories.

Question 146.

An administrator needs to block traffic to known malicious IP addresses as early as possible in packet processing. Which Secure Firewall capability best meets the requirement?

1. Health monitoring
   2. File policy
   3. Static NAT
   4. Security Intelligence

Correct Answer: 4

Explanation:

Security Intelligence is designed for early filtering based on known or configured indicators such as IP addresses, networks, domains, and URLs. Traffic that matches a Security Intelligence block list can be denied before reaching more resource-intensive access control, intrusion, and file inspection stages. This provides both security and efficiency because obviously malicious destinations can be rejected quickly. Health monitoring reports device condition, file policies control file transfers, and static NAT defines address mappings. None of those performs reputation- or indicator-based early filtering. Security Intelligence should still be managed carefully because false positives can affect legitimate connectivity, and exceptions may be necessary for business-critical destinations that are incorrectly categorized.

Question 147.

Which event type is most appropriate for investigating a Snort rule that triggered because of an exploit attempt?

1. Deployment event
   2. Health event
   3. Intrusion event
   4. Audit event

Correct Answer: 3

Explanation:

Intrusion events are generated when inspected traffic matches Snort intrusion rules. These events provide security-relevant details such as the signature or rule that triggered, source and destination information, protocol data, timestamps, and other context that helps determine the nature and severity of the activity. An administrator can use intrusion events to investigate attacks, identify affected systems, tune noisy signatures, or determine whether incident response is required. Deployment events relate to policy deployment, health events report operational conditions, and audit events track administrative actions. While those logs may support troubleshooting, intrusion events are the direct source for understanding why Snort identified a connection as exploit-related or otherwise suspicious.

Question 148.

An internal network contains hundreds of private IPv4 hosts that all require outbound Internet access using a single public IPv4 address. Which NAT method should be configured?

1. Identity NAT
   2. Dynamic PAT
   3. Static one-to-one NAT
   4. No NAT

Correct Answer: 2

Explanation:

Dynamic Port Address Translation allows many private internal hosts to share one public IPv4 address by translating both the source address and source port. Each connection is kept distinct using different translated port values. This approach is commonly used for outbound Internet connectivity because it conserves scarce public IPv4 addresses while supporting many simultaneous sessions. Static one-to-one NAT would require individual public mappings for internal hosts and is not efficient for this scenario. Identity NAT preserves the original address and is used when traffic should not be translated. No NAT would not make private RFC1918 addresses directly usable on the public Internet. Dynamic PAT therefore provides the scalable many-to-one translation required by the organization.

Question 149.

An organization is publishing an internal HTTPS server to external customers. The server must always be reachable using the same public IP address. Which configuration is most appropriate?

1. Configure static NAT between the private server address and the public address
   2. Configure Dynamic PAT for the server
   3. Configure identity NAT only
   4. Use Security Intelligence instead of NAT

Correct Answer: 1

Explanation:

Static NAT creates a predictable mapping between the server’s internal private address and a fixed public address. External clients can consistently use the same public IP, while the server remains addressed privately on the internal network. This is a common design for externally published services. Dynamic PAT is optimized for many outbound clients sharing one public address and does not provide the same simple fixed mapping required by a published server. Identity NAT means the address is not translated, which usually does not satisfy an Internet publishing requirement involving a private address. Security Intelligence is a traffic-reputation feature rather than an address-translation mechanism. Static NAT is therefore the appropriate solution for providing a consistent public identity to the internal server.

Question 150.

A known vulnerability scanner generates thousands of expected intrusion alerts during scheduled security assessments. Which administrative response best reduces noise without weakening unrelated protection?

1. Disable all intrusion inspection during business hours
   2. Remove all access control connection logging
   3. Change every matching signature to permit globally
   4. Apply targeted intrusion-event suppression, thresholding, or tuning for the authorized scanner

Correct Answer: 4

Explanation:

A verified vulnerability scanner can generate many legitimate intrusion events because its purpose is to test systems using patterns that resemble real attacks. Rather than disabling intrusion protection broadly, the administrator should apply narrowly targeted tuning such as event suppression, thresholding, or other appropriate rule adjustments for the authorized scanner’s traffic. This reduces operational noise while maintaining protection against the same attack patterns from unauthorized sources. Global rule changes could create detection gaps, and removing connection logging would reduce visibility without solving the event volume problem. Effective tuning should be documented, periodically reviewed, and scoped as tightly as possible. If the scanner’s addresses or role change, the exception should be reassessed to ensure that it does not unintentionally conceal malicious activity.

Question 151.

An administrator wants Secure Firewall to block selected executable file types as they are downloaded through inspected traffic. Which policy type is required?

1. Health policy
   2. Platform settings policy
   3. File policy
   4. Routing policy

Correct Answer: 3

Explanation:

A file policy controls how supported file types are handled when they traverse traffic inspected by Secure Firewall. The administrator can define actions such as detecting, logging, blocking, or applying malware-related inspection to selected file types. To block executable downloads, the file policy should define the relevant file-type actions and then be associated with the appropriate access control rule. This allows the network session to be evaluated by normal access control while still enforcing content-level restrictions. Health policies monitor operational status, platform settings manage device-level parameters, and routing determines packet forwarding. None of those performs file-type control. File policies are therefore the correct mechanism for controlling executable transfers through permitted application sessions.

Question 152.

After outbound TLS decryption is enabled, users report that many browsers show certificate trust warnings. What should be checked first?

1. Whether the OSPF cost changed
   2. Whether endpoint systems trust the CA used by Secure Firewall for decryption
   3. Whether PAT is translating enough source ports
   4. Whether intrusion rules are enabled

Correct Answer: 2

Explanation:

During outbound TLS decryption, Secure Firewall can terminate the client-side encrypted session and generate a substitute certificate for the external destination. That substitute certificate is signed by a CA configured on the firewall. Client endpoints must trust that CA; otherwise, browsers and applications can display certificate warnings because the presented certificate chain is not recognized as trusted. The administrator should therefore verify that the decryption CA certificate has been correctly distributed to endpoint trust stores. OSPF costs, PAT port capacity, and intrusion-rule settings do not normally cause certificate trust warnings. The administrator should also consider certificate-pinning applications and destinations that must be exempted from decryption because those applications may fail even when the CA is trusted.

Question 153.

A security engineer suspects that a Threat Defense appliance is overloaded. Which capability should be reviewed to check CPU, memory, interface status, and other operational conditions?

1. Health monitoring
   2. URL filtering
   3. File disposition
   4. Security Intelligence

Correct Answer: 1

Explanation:

Health monitoring provides visibility into the operational state of Secure Firewall components and managed devices. Administrators can use health information to examine CPU and memory utilization, interface status, process condition, connectivity with Management Center, and other platform-related metrics. If the firewall appears overloaded, health monitoring is an appropriate first source because it can indicate whether the issue is resource-related or caused by a failing component. URL filtering controls website access, file disposition relates to content inspection, and Security Intelligence filters traffic based on known indicators. These security controls do not replace platform health monitoring. Reviewing health data can help the administrator decide whether the next step should involve policy optimization, interface troubleshooting, capacity planning, or deeper device diagnostics.

Question 154.

Which feature provides firewall redundancy by allowing a compatible peer device to assume forwarding responsibility when the active Threat Defense appliance fails?

1. URL filtering
   2. Dynamic PAT
   3. File inspection
   4. High availability

Correct Answer: 4

Explanation:

High availability provides appliance redundancy by pairing compatible firewall devices so that service can continue if the active unit becomes unavailable. Depending on the supported platform and deployment model, configuration information and relevant connection state can be synchronized between peers. The standby unit can then assume the forwarding role when failover criteria are met. Administrators should monitor HA links, device status, and failover events to ensure the pair is functioning correctly. URL filtering controls web access, Dynamic PAT performs address translation, and file inspection analyzes transferred files. None of those provides device-level failover. High availability is therefore the feature used when network security services must remain available despite the failure of one firewall appliance.

Question 155.

A user reports that an application session is being blocked unexpectedly. Which information should the administrator examine first to determine the access control decision?

1. Device serial numbers
   2. Only interface counters
   3. Connection event details and the rule that matched the session
   4. Only routing-neighbor information

Correct Answer: 3

Explanation:

Connection events are the best starting point when troubleshooting why a specific session was allowed or blocked. When logging is configured, the event can provide the source and destination addresses, ports, application, user identity, zones, action, and access control rule associated with the traffic. This can immediately show whether the connection matched an unexpected rule or whether the policy behaved as configured. If the access control decision appears correct, troubleshooting can continue into Security Intelligence, NAT, decryption, routing, or downstream connectivity. Device serial numbers and interface counters may be useful for different problems, while routing-neighbor status does not directly identify the policy rule responsible for a session-level action.

Question 156.

An organization wants a firewall policy that grants access to a financial application only to users who belong to a specific corporate directory group. Which capability is required?

1. Static NAT
   2. Identity-based access control
   3. High availability
   4. Security Intelligence only

Correct Answer: 2

Explanation:

Identity-based access control allows Secure Firewall policies to use usernames and group membership as match criteria. With appropriate identity integration, the firewall can associate network connections with users and make access-control decisions based on directory groups. This allows an organization to permit the financial application for authorized employees while denying other users even if they share the same network ranges. Static NAT translates addresses, high availability provides redundancy, and Security Intelligence filters based on reputation or configured indicators. None of those features supplies the identity context required for group-based policy. Identity-aware access control is therefore the appropriate mechanism for creating access rules based on corporate user membership rather than relying only on source IP addresses.

Question 157.

An organization wants users attempting to access a discouraged website category to see a warning page and optionally continue when policy permits. Which access control action should be used?

1. Interactive Block
   2. Trust
   3. Security Intelligence Block
   4. Dynamic PAT

Correct Answer: 1

Explanation:

Interactive Block provides a user-facing workflow for supported web traffic in which a warning page can be displayed and the user may be allowed to continue according to policy. This is useful when the organization wants to discourage access rather than impose an absolute block. For example, a category may be considered risky but not strictly prohibited. Trust simply permits traffic while bypassing further inspection and does not display a warning. Security Intelligence Block denies traffic based on matching indicators without presenting the same interactive choice. Dynamic PAT is unrelated because it performs address translation. Interactive Block therefore best meets the requirement for warning users while still allowing continuation under defined policy conditions.

Question 158.

An access control rule permits a file-transfer application, but the administrator also wants matching files evaluated for malware. Which configuration should be associated with the rule?

1. A static route only
   2. A health policy only
   3. A security zone only
   4. An appropriate file policy with malware inspection

Correct Answer: 4

Explanation:

The access control rule determines whether the session is allowed, while a file policy can provide additional inspection of supported files that pass through the permitted connection. By associating a file policy configured for malware inspection, the administrator can evaluate transferred content, generate file and malware events, and enforce file-related actions according to policy. A static route affects forwarding, a health policy monitors the firewall’s operational status, and a security zone groups interfaces for rule matching. None of these analyzes file content. The combination of an Allow access control rule and a suitable file policy therefore provides the required balance: the application remains available, but files transferred through the session are still examined for malicious content.

Question 159.

A user session is permitted by the access control policy, but the application still cannot reach the destination. What should the administrator investigate next?

1. Delete and recreate the access control policy
   2. Disable intrusion inspection globally
   3. Verify NAT, routing, interface state, return-path routing, and downstream connectivity
   4. Reinstall Secure Firewall Management Center

Correct Answer: 3

Explanation:

If connection events confirm that the access control policy permitted the session, the administrator should move to the next layers of packet processing and network connectivity. Incorrect NAT translation, a missing route, an inactive interface, asymmetric return routing, or a downstream network problem can prevent the application from functioning even when the firewall policy allows it. Troubleshooting should follow the packet path and use the evidence already available rather than modifying a policy that appears to be operating correctly. Disabling intrusion inspection or reinstalling Management Center would be unnecessarily disruptive. Verifying translations, routes, interfaces, and return connectivity helps isolate whether the problem exists at the firewall forwarding layer or beyond the Secure Firewall environment.

Question 160.

An administrator discovers that a very broad Trust rule is causing sensitive application traffic to bypass inspection. What is the best corrective action?

1. Disable the complete access control policy
   2. Narrow or replace the Trust rule so only explicitly trusted traffic bypasses inspection, then deploy the updated policy
   3. Disable all connection logging
   4. Configure Dynamic PAT for the trusted traffic

Correct Answer: 2

Explanation:

Trust rules should be defined narrowly because matching traffic bypasses additional deep inspection. If a broad Trust rule includes sensitive applications, the firewall may not apply intrusion prevention, file inspection, or other security controls that the organization expects. The administrator should review the rule’s source and destination networks, security zones, applications, users, and other match conditions and reduce the scope so only deliberately trusted traffic uses the bypass. If sensitive traffic still requires access but should receive inspection, replacing Trust with an Allow action and attaching the appropriate security policies may be preferable. After modifying the policy, the change must be deployed to the affected Threat Defense devices. Disabling logging or changing PAT does not correct an overly broad inspection bypass.