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CompTIA SK0-005 Practice Test 76

Question 750

A change board is planning a verified response to this server event: A network segment receives a wrong gateway from an unauthorized DHCP server, redirecting traffic after lease renewal. For the DHCP and IP address conflict isolation issue, which response elements belong in the approved plan? Select TWO answers.

  1. Capture DHCP offers and ARP announcements, inspect scope exclusions, MAC addresses and gateway options.
  2. Trace conflicting ARP/DHCP responses, eliminate overlapping assignments or rogue offers and correct lease options.
  3. Hardcode the same address on every affected server to prevent lease-renewal events.
  4. Only intended VLANs traverse the trunk and test VMs reach their approved peers.
  5. Use host and guest metrics to identify hypervisor resource contention, then right-size or rebalance allocations.

Explanation

Correct Answer

A:

These observations investigate the exact DHCP and IP address conflict isolation failure rather than unrelated components. Confirm remediation through: Clients obtain unique approved addresses and correct gateways without duplicate-IP warnings.

B:

Intermittent IP conflicts and unauthorized DHCP options can appear as random server outages while switch ports remain healthy.

Incorrect Answers

C:

Discriminate using: Capture DHCP offers and ARP announcements, inspect scope exclusions, MAC addresses and gateway options.

D:

For this incident, the relevant principle is: Intermittent IP conflicts and unauthorized DHCP options can appear as random server outages while switch ports remain healthy. This statement concerns Incorrect switch VLAN trunk allowance, a different Server+ technical control.

E:

For this incident, the relevant principle is: Intermittent IP conflicts and unauthorized DHCP options can appear as random server outages while switch ports remain healthy. The desired recovery condition is: Clients obtain unique approved addresses and correct gateways without duplicate-IP warnings.

Question 751

A server administrator is investigating a server issue involving routing and stateful firewall asymmetry: A dual-homed server can send requests to a remote subnet but replies return through an unexpected interface and are dropped by a stateful firewall. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Test client resolvers and cached records, correct zone or resolver settings and honor TTL behavior.
  2. Inspect forward/return routing, gateway selection and stateful firewall rules; correct the narrow route or policy.
  3. Correct access/trunk VLAN membership and allowed VLAN lists while preserving intended segmentation.
  4. Disable every stateful inspection rule because one route is asymmetric.

Explanation

Correct Answer

B:

Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

Incorrect Answers

A:

This statement concerns DNS client-specific failure, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

C:

This statement concerns Incorrect switch VLAN trunk allowance, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

D:

This is the unsafe shortcut in the Routing and stateful firewall asymmetry scenario, not a justified remediation or diagnostic. Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

Question 752

While reviewing the CompTIA Server+ administration incident, a technician learns: A dual-homed server can send requests to a remote subnet but replies return through an unexpected interface and are dropped by a stateful firewall. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Intermittent IP conflicts and unauthorized DHCP options can appear as random server outages while switch ports remain healthy.
  2. Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.
  3. Thermal throttling and protective shutdown may result from heat transfer or airflow faults even without high average CPU use.
  4. Filesystem write failures can arise from inode or quota limits as well as free-block exhaustion.

Explanation

Correct Answer

B:

The acceptance test is: Connections complete through approved paths in both directions without broad firewall bypasses.

Incorrect Answers

A:

This statement concerns DHCP and IP address conflict isolation, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

C:

This statement concerns Thermal shutdown and heatsink diagnostics, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

D:

This statement concerns Filesystem full, inode exhaustion and quotas, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

Question 753

Before a server change is approved, the on-call engineer receives this incident report: A dual-homed server can send requests to a remote subnet but replies return through an unexpected interface and are dropped by a stateful firewall. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Inspect switchport mode, native VLAN, allowed VLAN set, MAC learning and packet tags on the affected uplink.
  2. Trace route tables, firewall session logs, interface captures and asymmetric path metrics.
  3. Capture DHCP offers and ARP announcements, inspect scope exclusions, MAC addresses and gateway options.
  4. Disable every stateful inspection rule because one route is asymmetric.

Explanation

Correct Answer

B:

These observations investigate the exact Routing and stateful firewall asymmetry failure rather than unrelated components. Incident: A dual-homed server can send requests to a remote subnet but replies return through an unexpected interface and are dropped by a stateful firewall.

Incorrect Answers

A:

For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics.

C:

For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

D:

This is the unsafe shortcut in the Routing and stateful firewall asymmetry scenario, not a justified remediation or diagnostic. Incident: A dual-homed server can send requests to a remote subnet but replies return through an unexpected interface and are dropped by a stateful firewall.

Question 754

After the team implements a targeted remediation for Routing and stateful firewall asymmetry, the original incident was: A dual-homed server can send requests to a remote subnet but replies return through an unexpected interface and are dropped by a stateful firewall. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. A single-fabric outage causes no I/O loss and service returns to expected latency on supported paths.
  2. Affected clients resolve the correct application endpoint and connect consistently.
  3. Sustained stress tests run within component thermal limits without unexpected throttling or shutdown.
  4. Connections complete through approved paths in both directions without broad firewall bypasses.

Explanation

Correct Answer

D:

Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

Incorrect Answers

A:

This statement concerns SAN fabric multipath failover and latency, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

B:

This statement concerns DNS client-specific failure, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair.

C:

This statement concerns Thermal shutdown and heatsink diagnostics, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair.

Question 755

A change board is planning a verified response to this server event: A dual-homed server can send requests to a remote subnet but replies return through an unexpected interface and are dropped by a stateful firewall. For the Routing and stateful firewall asymmetry issue, which response elements belong in the approved plan? Select ONE best answer.

  1. Inspect forward/return routing, gateway selection and stateful firewall rules; correct the narrow route or policy. Then validate the change by confirming: Connections complete through approved paths in both directions without broad firewall bypasses.
  2. Trace conflicting ARP/DHCP responses, eliminate overlapping assignments or rogue offers and correct lease options.
  3. Inspect change records, kernel and driver logs, known advisories and control-host comparison tests.
  4. Disable every stateful inspection rule because one route is asymmetric.

Explanation

Correct Answer

A:

Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. This avoids the unsafe shortcut: Disable every stateful inspection rule because one route is asymmetric.

Incorrect Answers

B:

That option would trace conflicting ARP/DHCP responses, eliminate overlapping assignments or rogue offers and correct lease options, but it addresses a different concern. Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

C:

That option would inspect change records, kernel and driver logs, known advisories and control-host comparison tests, but it addresses a different concern. Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

D:

This is the unsafe shortcut in the Routing and stateful firewall asymmetry scenario, not a justified remediation or diagnostic. Discriminate using: Trace route tables, firewall session logs, interface captures and asymmetric path metrics.

Question 756

A server administrator is investigating a server issue involving routing and stateful firewall asymmetry: A new static route points through a decommissioned router, producing one-way connectivity to the backup network. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Disable every stateful inspection rule because one route is asymmetric.
  2. Record symptoms and recent changes, form a testable hypothesis, change one variable at a time and preserve rollback evidence.
  3. Inspect forward/return routing, gateway selection and stateful firewall rules; correct the narrow route or policy.
  4. Contain unapproved egress, preserve flow and endpoint evidence and validate allowed destinations before reopening paths.

Explanation

Correct Answer

C:

Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A successful outcome is: Connections complete through approved paths in both directions without broad firewall bypasses.

Incorrect Answers

A:

This is the unsafe shortcut in the Routing and stateful firewall asymmetry scenario, not a justified remediation or diagnostic. Incident: A new static route points through a decommissioned router, producing one-way connectivity to the backup network.

B:

That option would record symptoms and recent changes, form a testable hypothesis, change one variable at a time and preserve rollback evidence, but it addresses a different concern. Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

D:

This statement concerns Unauthorized outbound traffic and exfiltration detection, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

Question 757

While reviewing the CompTIA Server+ administration incident, a technician learns: A new static route points through a decommissioned router, producing one-way connectivity to the backup network. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Unusual outbound volume and destinations may indicate exfiltration; investigation must preserve evidence and scope blast radius.
  2. A repeatable incident method isolates causes and prevents uncontrolled fixes from introducing new failures.
  3. Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.
  4. Malware response must address propagation and initial access; rebooting one host does not remove the attacker's foothold.

Explanation

Correct Answer

C:

The acceptance test is: Connections complete through approved paths in both directions without broad firewall bypasses. This is the controlling principle for the reported Routing and stateful firewall asymmetry incident.

Incorrect Answers

A:

This statement concerns Unauthorized outbound traffic and exfiltration detection, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair.

B:

This statement concerns Structured troubleshooting hypothesis and controlled change, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

D:

This statement concerns Malware persistence and containment, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

Question 758

Before a server change is approved, the on-call engineer receives this incident report: A new static route points through a decommissioned router, producing one-way connectivity to the backup network. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Trace route tables, firewall session logs, interface captures and asymmetric path metrics.
  2. Capture DHCP offers and ARP announcements, inspect scope exclusions, MAC addresses and gateway options.
  3. Review EDR process trees, scheduled tasks, outbound connections, privileged logins and related host indicators.
  4. Disable every stateful inspection rule because one route is asymmetric.

Explanation

Correct Answer

A:

These observations investigate the exact Routing and stateful firewall asymmetry failure rather than unrelated components. The expected technical relationship is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

Incorrect Answers

B:

For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. This statement concerns DHCP and IP address conflict isolation, a different Server+ technical control.

C:

For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. This statement concerns Malware persistence and containment, a different Server+ technical control.

D:

Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

Question 759

After the team implements a targeted remediation for Routing and stateful firewall asymmetry, the original incident was: A new static route points through a decommissioned router, producing one-way connectivity to the backup network. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. Unapproved outbound flows stop, legitimate data transfers remain and incident findings are documented.
  2. The host survives the designed single-power-path failure without reset or overcurrent.
  3. Affected clients resolve the correct application endpoint and connect consistently.
  4. Connections complete through approved paths in both directions without broad firewall bypasses.

Explanation

Correct Answer

D:

Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

Incorrect Answers

A:

This statement concerns Unauthorized outbound traffic and exfiltration detection, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

B:

This statement concerns PSU and power event isolation, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

C:

This statement concerns DNS client-specific failure, a different Server+ technical control. It does not directly address the reported Routing and stateful firewall asymmetry fault or prove its repair. For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. A targeted investigation checks: Trace route tables, firewall session logs, interface captures and asymmetric path metrics. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

Question 760

A change board is planning a verified response to this server event: A new static route points through a decommissioned router, producing one-way connectivity to the backup network. For the Routing and stateful firewall asymmetry issue, which response elements belong in the approved plan? Select TWO answers.

  1. Disable every stateful inspection rule because one route is asymmetric.
  2. Affected clients resolve the correct application endpoint and connect consistently.
  3. Trace route tables, firewall session logs, interface captures and asymmetric path metrics.
  4. Isolate affected hosts, preserve evidence and investigate persistence and lateral movement before controlled remediation.
  5. Inspect forward/return routing, gateway selection and stateful firewall rules; correct the narrow route or policy.

Explanation

Correct Answer

C:

These observations investigate the exact Routing and stateful firewall asymmetry failure rather than unrelated components. Confirm remediation through: Connections complete through approved paths in both directions without broad firewall bypasses.

E:

Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet.

Incorrect Answers

A:

Discriminate using: Trace route tables, firewall session logs, interface captures and asymmetric path metrics.

B:

For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. This statement concerns DNS client-specific failure, a different Server+ technical control.

D:

For this incident, the relevant principle is: Reachability requires valid bidirectional paths and compatible state tracking, not only an outbound SYN packet. The desired recovery condition is: Connections complete through approved paths in both directions without broad firewall bypasses.

CompTIA Server+ Certification Exam (SK0-005) Practice Tests