Cisco 300-710 Practice Test 31
Question 300
During a firewall implementation acceptance test: A legitimate internal service is blocked because a DNS security action targets a broad domain category without a verified exception. Which THREE complementary elements form the corrective action, diagnostic proof and successful acceptance outcome? Select THREE answers.
- Inspect DNS policy order, query events, resolver path and lookup outcomes for both blocked and approved domains.
- Apply appropriate DNS policy rules and documented security actions to the intended clients and domain indicators while testing exceptions.
- Align supported routing selection and QoS policies with documented egress, markings and bandwidth behavior.
- Inspect effective SSL or TLS inspection settings, application identification and URL event fields for test sessions.
- Known malicious domain queries receive the intended security action while authorized internal names still resolve correctly.
- Assume a URL filtering rule automatically controls every DNS lookup for the same domain name.
Explanation
Correct Answers
A:Direct independent How to verify: Inspect DNS policy order, query events, resolver path and lookup outcomes for both blocked and approved domains.
B:Appropriate implementation: Apply appropriate DNS policy rules and documented security actions to the intended clients and domain indicators while testing exceptions. Case details: A legitimate internal service is blocked because a DNS security action targets a broad domain category without a verified exception. Governing behavior: DNS security decisions operate on name resolution and are not interchangeable with application-layer URL path inspection.
E:Required acceptance evidence: Known malicious domain queries receive the intended security action while authorized internal names still resolve correctly. Case details: A legitimate internal service is blocked because a DNS security action targets a broad domain category without a verified exception. Governing behavior: DNS security decisions operate on name resolution and are not interchangeable with application-layer URL path inspection.
Incorrect Answers
C:This alternative describes a different control, Firewall routing and QoS class policy, rather than this scenario’s DNS policy sinkhole and domain security controls: Align supported routing selection and QoS policies with documented egress, markings and bandwidth behavior. Case details: A legitimate internal service is blocked because a DNS security action targets a broad domain category without a verified exception. Governing behavior: DNS security decisions operate on name resolution and are not interchangeable with application-layer URL path inspection.
D:That option would inspect effective SSL or TLS inspection settings, application identification and URL event fields for test sessions, but it addresses a different concern. Governing behavior: DNS security decisions operate on name resolution and are not interchangeable with application-layer URL path inspection.
F:Unsafe or unsupported shortcut for this firewall scenario: Assume a URL filtering rule automatically controls every DNS lookup for the same domain name.
Question 301
A CCNP Security practice scenario presents this condition: An access-control rule should permit a named employee group but the firewall never associates traffic with the intended users. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.
- Apply appropriate DNS policy rules and documented security actions to the intended clients and domain indicators while testing exceptions.
- Configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness.
- Select suitable supported network analysis policy settings and relevant preprocessors or inspectors, then validate behavior with representative traffic.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
Explanation
Correct Answer
B:Appropriate implementation: Configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness.
Incorrect Answers
A:That option would apply appropriate DNS policy rules and documented security actions to the intended clients and domain indicators while testing exceptions, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
C:That option would select suitable supported network analysis policy settings and relevant preprocessors or inspectors, then validate behavior with representative traffic, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
D:That option would assume a firewall always knows a session's Active Directory group merely from its source IPv4 address, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
Question 302
A firewall service owner escalates the following: An access-control rule should permit a named employee group but the firewall never associates traffic with the intended users. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.
- Intrusion detection events and enforced packet drops are distinct outcomes; an alert can occur without blocking a session.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
- Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
- DNS security decisions operate on name resolution and are not interchangeable with application-layer URL path inspection.
Explanation
Correct Answer
C:Underlying platform principle: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
Incorrect Answers
A:This alternative describes a different control, Snort rule action detect versus prevent, rather than this scenario’s Identity-based rule mapping and directory sources: Intrusion detection events and enforced packet drops are distinct outcomes; an alert can occur without blocking a session.
B:That option would assume a firewall always knows a session's Active Directory group merely from its source IPv4 address, but it addresses a different concern. Approved action: Configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness.
D:This alternative describes a different control, DNS policy sinkhole and domain security controls, rather than this scenario’s Identity-based rule mapping and directory sources: DNS security decisions operate on name resolution and are not interchangeable with application-layer URL path inspection.
Question 303
An approved maintenance window surfaces this issue: An access-control rule should permit a named employee group but the firewall never associates traffic with the intended users. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.
- Compare deployed policy, logging settings, event timestamps, rule identifiers and the actual source and destination tuple.
- Inspect correlation policy inputs, event timestamps, host identities, trigger conditions and a representative test sequence.
- Inspect identity source health, realm and group retrieval, mapping age, endpoint IP and the matched access event.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
Explanation
Correct Answer
C:Direct independent verification: Inspect identity source health, realm and group retrieval, mapping age, endpoint IP and the matched access event.
Incorrect Answers
A:That option would compare deployed policy, logging settings, event timestamps, rule identifiers and the actual source and destination tuple, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
B:That option would inspect correlation policy inputs, event timestamps, host identities, trigger conditions and a representative test sequence, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
D:Unsafe or unsupported shortcut for this firewall scenario: Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address. It cannot establish the stated security outcome.
Question 304
A Secure Firewall deployment change request reports: An access-control rule should permit a named employee group but the firewall never associates traffic with the intended users. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.
- A meaningful multi-event pattern produces the intended notification with tolerable false positives and no hidden loss of individual evidence.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
- Events have consistent timestamps and the management platform reaches approved update services without uncontrolled outbound exposure.
- Authorized group members obtain intended access and unrelated identities fail the policy in a repeatable test.
Explanation
Correct Answer
D:Required acceptance evidence: Authorized group members obtain intended access and unrelated identities fail the policy in a repeatable test.
Incorrect Answers
A:This alternative describes a different control, Correlation policies for related security events, rather than this scenario’s Identity-based rule mapping and directory sources: A meaningful multi-event pattern produces the intended notification with tolerable false positives and no hidden loss of individual evidence.
B:Unsafe or unsupported shortcut for this firewall scenario: Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address. It cannot establish the stated security outcome.
C:This alternative describes a different control, FMC DNS NTP update and system health settings, rather than this scenario’s Identity-based rule mapping and directory sources: Events have consistent timestamps and the management platform reaches approved update services without uncontrolled outbound exposure.
Question 305
An FMC policy and traffic review discovers: An access-control rule should permit a named employee group but the firewall never associates traffic with the intended users. Which misleading assumption MOST directly causes this issue and must be rejected? Select ONE best answer.
- Assume a URL filtering rule automatically controls every DNS lookup for the same domain name.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
- Assume any Snort intrusion alert always means the associated traffic was dropped before reaching the destination.
- Assume logged event timestamps remain reliably comparable when management and sensor clocks are unsynchronized.
Explanation
Correct Answer
B:Reject the scenario-specific unsafe assumption: Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address. The stated shortcut conflicts with the intended control and its documented verification.
Incorrect Answers
A:That option would assume a URL filtering rule automatically controls every DNS lookup for the same domain name, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
C:That option would assume any Snort intrusion alert always means the associated traffic was dropped before reaching the destination, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
D:That option would assume logged event timestamps remain reliably comparable when management and sensor clocks are unsynchronized, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
Question 306
An engineer validates a Cisco Secure Firewall implementation: A shared service terminal is attributed to the wrong identity because stale mappings are trusted as current. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.
- Configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness.
- Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples.
- Place sufficiently specific access-control rules in intended evaluation order and set a documented default action.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
Explanation
Correct Answer
A:Appropriate implementation: Configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness.
Incorrect Answers
B:That option would use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
C:This alternative describes a different control, Access control policy ordering and default behavior, rather than this scenario’s Identity-based rule mapping and directory sources: Place sufficiently specific access-control rules in intended evaluation order and set a documented default action.
D:Unsafe or unsupported shortcut for this firewall scenario: Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address. It cannot establish the stated security outcome.
Question 307
A security operations incident describes: A shared service terminal is attributed to the wrong identity because stale mappings are trusted as current. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.
- Multidomain management enables delegated administration, but inheritance and shared definitions can affect multiple managed areas.
- Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
- Network analysis normalizes and interprets protocol traffic before some inspection decisions, and incorrect handling can affect detection fidelity.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
Explanation
Correct Answer
B:Underlying platform principle: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
Incorrect Answers
A:This alternative describes a different control, FMC domain hierarchy and configuration ownership, rather than this scenario’s Identity-based rule mapping and directory sources: Multidomain management enables delegated administration, but inheritance and shared definitions can affect multiple managed areas.
C:This alternative describes a different control, Network analysis policy protocol preprocessing, rather than this scenario’s Identity-based rule mapping and directory sources: Network analysis normalizes and interprets protocol traffic before some inspection decisions, and incorrect handling can affect detection fidelity.
D:Unsafe or unsupported shortcut for this firewall scenario: Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address. Case details: A shared service terminal is attributed to the wrong identity because stale mappings are trusted as current. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
Question 308
During a firewall implementation acceptance test: A shared service terminal is attributed to the wrong identity because stale mappings are trusted as current. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.
- Inspect NAT rule evaluation, original and translated addresses, routing and packet tracer output for the actual flow.
- Inspect identity source health, realm and group retrieval, mapping age, endpoint IP and the matched access event.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
- Inspect intrusion rule identity, traffic payload sample, triggered variables and event distribution before and after tuning.
Explanation
Correct Answer
B:Direct independent verification: Inspect identity source health, realm and group retrieval, mapping age, endpoint IP and the matched access event.
Incorrect Answers
A:That option would inspect NAT rule evaluation, original and translated addresses, routing and packet tracer output for the actual flow, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
C:Unsafe or unsupported shortcut for this firewall scenario: Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address. Case details: A shared service terminal is attributed to the wrong identity because stale mappings are trusted as current. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone. Approved action: Configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness. Independent evidence: Inspect identity source health, realm and group retrieval, mapping age, endpoint IP and the matched access event. Acceptance criterion: Authorized group members obtain intended access and unrelated identities fail the policy in a repeatable test.
D:That option would inspect intrusion rule identity, traffic payload sample, triggered variables and event distribution before and after tuning, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
Question 309
A CCNP Security practice scenario presents this condition: A shared service terminal is attributed to the wrong identity because stale mappings are trusted as current. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
- Known benign test flows stop generating the false alert while genuine matching malicious patterns remain detectable.
- Authorized group members obtain intended access and unrelated identities fail the policy in a repeatable test.
- Potentially risky encrypted connections are triaged with documented confidence while payload privacy limitations remain explicit.
Explanation
Correct Answer
C:Required acceptance evidence: Authorized group members obtain intended access and unrelated identities fail the policy in a repeatable test.
Incorrect Answers
A:Unsafe or unsupported shortcut for this firewall scenario: Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
B:This alternative describes a different control, Custom intrusion rules and rule-set tuning, rather than this scenario’s Identity-based rule mapping and directory sources: Known benign test flows stop generating the false alert while genuine matching malicious patterns remain detectable.
D:This alternative describes a different control, Encrypted Visibility Engine TLS metadata analysis, rather than this scenario’s Identity-based rule mapping and directory sources: Potentially risky encrypted connections are triaged with documented confidence while payload privacy limitations remain explicit.
Question 310
A firewall service owner escalates the following: A shared service terminal is attributed to the wrong identity because stale mappings are trusted as current. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.
- Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
- Configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness.
- Inspect identity source health, realm and group retrieval, mapping age, endpoint IP and the matched access event.
- Inspect EVE policy, TLS handshake metadata, connection correlation and independent endpoint or intrusion evidence.
Explanation
Correct Answers
C:Appropriate implementation: Configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness. Case details: A shared service terminal is attributed to the wrong identity because stale mappings are trusted as current. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
D:Direct independent How to verify: Inspect identity source health, realm and group retrieval, mapping age, endpoint IP and the matched access event.
Incorrect Answers
A:This alternative describes a different control, Application detector tuning and custom signatures, rather than this scenario’s Identity-based rule mapping and directory sources: Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples.
B:Unsafe or unsupported shortcut for this firewall scenario: Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
E:That option would inspect EVE policy, TLS handshake metadata, connection correlation and independent endpoint or intrusion evidence, but it addresses a different concern. Governing behavior: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.