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CompTIA SK0-005 Practice Test 20

Question 190

A change board is planning a verified response to this server event: A server migration changes the application address but one resolver retains a stale cache and clients intermittently reach the retired host. For the DNS split-horizon and resolver troubleshooting issue, which response elements belong in the approved plan? Select TWO answers.

  1. Offset falls within the authentication policy threshold and timestamps align across systems.
  2. Query each resolver directly, inspect answer sections and TTLs, compare private/public zones and client resolver lists.
  3. Set authoritative zone records and split-view policy correctly, then validate resolver paths, TTL and cache expiration.
  4. Hardcode a temporary hosts-file entry on every workstation and skip resolving authoritative DNS errors.
  5. Verify migration CPU compatibility, shared/storage accessibility and destination resource headroom before moving VMs.

Explanation

Correct Answer

B:

These observations investigate the exact DNS split-horizon and resolver troubleshooting failure rather than unrelated components. The expected technical relationship is: DNS answers depend on resolver selection, authoritative records and caching; a ping of one host does not validate all name-resolution paths.

C:

DNS answers depend on resolver selection, authoritative records and caching; a ping of one host does not validate all name-resolution paths. This is the appropriate targeted correction for DNS split-horizon and resolver troubleshooting.

Incorrect Answers

A:

For this incident, the relevant principle is: DNS answers depend on resolver selection, authoritative records and caching; a ping of one host does not validate all name-resolution paths. This statement concerns NTP time sources and clock skew, a different Server+ technical control.

D:

Incident: A server migration changes the application address but one resolver retains a stale cache and clients intermittently reach the retired host.

E:

For this incident, the relevant principle is: DNS answers depend on resolver selection, authoritative records and caching; a ping of one host does not validate all name-resolution paths. This statement concerns Live migration compatibility and resource headroom, a different Server+ technical control.

Question 191

A server administrator is investigating a server issue involving dhcp scope and relay design: A new subnet receives no leases after its router interface is added without a DHCP relay to the central server. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Configure nonoverlapping DHCP scopes, appropriate relay or helper settings and correct lease, gateway and DNS options.
  2. Expand a random scope and assume DHCP broadcasts traverse routers without a relay.
  3. Configure redundant trusted time sources and verify host, hypervisor and directory time hierarchy with monitored offset.
  4. Set authoritative zone records and split-view policy correctly, then validate resolver paths, TTL and cache expiration.

Explanation

Correct Answer

A:

DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

Incorrect Answers

B:

This is the unsafe shortcut in the DHCP scope and relay design scenario, not a justified remediation or diagnostic. DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

C:

That option would configure redundant trusted time sources and verify host, hypervisor and directory time hierarchy with monitored offset, but it addresses a different concern. DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

D:

That option would set authoritative zone records and split-view policy correctly, then validate resolver paths, TTL and cache expiration, but it addresses a different concern. DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

Question 192

While reviewing the CompTIA Server+ administration incident, a technician learns: A new subnet receives no leases after its router interface is added without a DHCP relay to the central server. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Layer-two VLAN membership and layer-three routing are distinct requirements; correct IP syntax alone does not guarantee reachability.
  2. UEFI, GPT and the installed bootloader must match a supported boot path; changing boot mode after installation can prevent startup.
  3. DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.
  4. Effective file access results from intersecting share/export rules, filesystem permissions and identity context.

Explanation

Correct Answer

C:

Applying it leads to this operational action: Configure nonoverlapping DHCP scopes, appropriate relay or helper settings and correct lease, gateway and DNS options.

Incorrect Answers

A:

This statement concerns VLAN segmentation and default gateway, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

B:

This statement concerns UEFI boot and GPT provisioning, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

D:

This statement concerns File share authorization and inheritance, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

Question 193

Before a server change is approved, the on-call engineer receives this incident report: A new subnet receives no leases after its router interface is added without a DHCP relay to the central server. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Measure time offset, NTP peer reachability, stratum and event timestamps on affected systems.
  2. Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways.
  3. Inspect switch port VLAN/trunk state, ARP tables, interface settings, routing table and path traces.
  4. Expand a random scope and assume DHCP broadcasts traverse routers without a relay.

Explanation

Correct Answer

B:

These observations investigate the exact DHCP scope and relay design failure rather than unrelated components. Incident: A new subnet receives no leases after its router interface is added without a DHCP relay to the central server.

Incorrect Answers

A:

For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways.

C:

For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

D:

This is the unsafe shortcut in the DHCP scope and relay design scenario, not a justified remediation or diagnostic. Incident: A new subnet receives no leases after its router interface is added without a DHCP relay to the central server.

Question 194

After the team implements a targeted remediation for DHCP scope and relay design, the original incident was: A new subnet receives no leases after its router interface is added without a DHCP relay to the central server. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. The OS boots consistently using the intended UEFI entry and approved partition scheme after reboot tests.
  2. Secrets are not exposed, failed commands stop or alert appropriately, and outcomes match verified artifacts.
  3. Internal and external clients resolve to their intended addresses consistently after cache expiry.
  4. Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

Explanation

Correct Answer

D:

DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

Incorrect Answers

A:

This statement concerns UEFI boot and GPT provisioning, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair.

B:

This statement concerns Script secret handling and exit-code validation, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

C:

This statement concerns DNS split-horizon and resolver troubleshooting, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

Question 195

A change board is planning a verified response to this server event: A new subnet receives no leases after its router interface is added without a DHCP relay to the central server. For the DHCP scope and relay design issue, which response elements belong in the approved plan? Select ONE best answer.

  1. Expand a random scope and assume DHCP broadcasts traverse routers without a relay.
  2. Configure nonoverlapping DHCP scopes, appropriate relay or helper settings and correct lease, gateway and DNS options. Then validate the change by confirming: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.
  3. Assign supported switch VLAN modes and correct interface subnet, mask, gateway and routes; verify permitted inter-VLAN flows.
  4. Review cluster vote configuration, witness reachability, fencing logs and simulated partition behavior.

Explanation

Correct Answer

B:

DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. This avoids the unsafe shortcut: Expand a random scope and assume DHCP broadcasts traverse routers without a relay.

Incorrect Answers

A:

This is the unsafe shortcut in the DHCP scope and relay design scenario, not a justified remediation or diagnostic. Discriminate using: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways.

C:

That option would assign supported switch VLAN modes and correct interface subnet, mask, gateway and routes; verify permitted inter-VLAN flows, but it addresses a different concern. DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

D:

That option would review cluster vote configuration, witness reachability, fencing logs and simulated partition behavior, but it addresses a different concern. DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

Question 196

A server administrator is investigating a server issue involving dhcp scope and relay design: Users in a branch intermittently receive addresses from the wrong pool because overlapping DHCP scopes include the same subnet and options. The change must address the documented fault without creating unrelated risk. Which corrective action is most appropriate? Select ONE best answer.

  1. Expand a random scope and assume DHCP broadcasts traverse routers without a relay.
  2. Right-size vCPU and RAM allocations using contention telemetry and supportable reservations or resource controls.
  3. Correct service startup ordering and resource limits, monitor dependency health and validate controlled restarts.
  4. Configure nonoverlapping DHCP scopes, appropriate relay or helper settings and correct lease, gateway and DNS options.

Explanation

Correct Answer

D:

DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

Incorrect Answers

A:

This is the unsafe shortcut in the DHCP scope and relay design scenario, not a justified remediation or diagnostic. Incident: Users in a branch intermittently receive addresses from the wrong pool because overlapping DHCP scopes include the same subnet and options.

B:

This statement concerns Hypervisor resource overcommit and reservations, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

C:

This statement concerns Service dependency and restart management, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

Question 197

While reviewing the CompTIA Server+ administration incident, a technician learns: Users in a branch intermittently receive addresses from the wrong pool because overlapping DHCP scopes include the same subnet and options. Which principle most directly explains how to address the described issue safely? Select ONE best answer.

  1. Allocated virtual resources are not guaranteed physically available under contention; vCPU ready and memory reclaim can harm latency.
  2. A running OS is not evidence that dependent services, resource budgets and health checks are correctly configured.
  3. UEFI, GPT and the installed bootloader must match a supported boot path; changing boot mode after installation can prevent startup.
  4. DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

Explanation

Correct Answer

D:

Applying it leads to this operational action: Configure nonoverlapping DHCP scopes, appropriate relay or helper settings and correct lease, gateway and DNS options.

Incorrect Answers

A:

This statement concerns Hypervisor resource overcommit and reservations, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair.

B:

This statement concerns Service dependency and restart management, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair.

C:

This statement concerns UEFI boot and GPT provisioning, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

Question 198

Before a server change is approved, the on-call engineer receives this incident report: Users in a branch intermittently receive addresses from the wrong pool because overlapping DHCP scopes include the same subnet and options. Which evidence would most directly establish the stated root-cause hypothesis? Select ONE best answer.

  1. Expand a random scope and assume DHCP broadcasts traverse routers without a relay.
  2. Inspect switch port VLAN/trunk state, ARP tables, interface settings, routing table and path traces.
  3. Inspect boot mode, partition-table format, Secure Boot state, boot entries and installation media support.
  4. Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways.

Explanation

Correct Answer

D:

These observations investigate the exact DHCP scope and relay design failure rather than unrelated components. Incident: Users in a branch intermittently receive addresses from the wrong pool because overlapping DHCP scopes include the same subnet and options.

Incorrect Answers

A:

DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

B:

For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

C:

For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. This statement concerns UEFI boot and GPT provisioning, a different Server+ technical control.

Question 199

After the team implements a targeted remediation for DHCP scope and relay design, the original incident was: Users in a branch intermittently receive addresses from the wrong pool because overlapping DHCP scopes include the same subnet and options. Which acceptance criterion would best demonstrate a durable and safe resolution? Select ONE best answer.

  1. All required services start in order after reboot and pass application-level health checks.
  2. Offset falls within the authentication policy threshold and timestamps align across systems.
  3. Unready nodes receive no new requests, ready nodes join predictably and existing requests drain successfully.
  4. Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

Explanation

Correct Answer

D:

DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

Incorrect Answers

A:

This statement concerns Service dependency and restart management, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

B:

This statement concerns NTP time sources and clock skew, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

C:

This statement concerns Load balancer health checking, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

Question 200

A change board is planning a verified response to this server event: Users in a branch intermittently receive addresses from the wrong pool because overlapping DHCP scopes include the same subnet and options. For the DHCP scope and relay design issue, which response elements belong in the approved plan? Select THREE answers.

  1. Expand a random scope and assume DHCP broadcasts traverse routers without a relay.
  2. Configure nonoverlapping DHCP scopes, appropriate relay or helper settings and correct lease, gateway and DNS options.
  3. Query each resolver directly, inspect answer sections and TTLs, compare private/public zones and client resolver lists.
  4. Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways.
  5. Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.
  6. Right-size vCPU and RAM allocations using contention telemetry and supportable reservations or resource controls.

Explanation

Correct Answer

B:

DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. This is the appropriate targeted correction for DHCP scope and relay design.

D:

These observations investigate the exact DHCP scope and relay design failure rather than unrelated components. The expected technical relationship is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

E:

DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. This evidence tests whether the original DHCP scope and relay design weakness has been corrected under realistic conditions.

Incorrect Answers

A:

Incident: Users in a branch intermittently receive addresses from the wrong pool because overlapping DHCP scopes include the same subnet and options.

C:

This statement concerns DNS split-horizon and resolver troubleshooting, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy. A targeted investigation checks: Inspect DHCP discover/offer captures, relay configuration, scope utilization and leased default gateways. The desired recovery condition is: Clients on each VLAN consistently obtain valid leases with correct options and no address conflicts.

F:

This statement concerns Hypervisor resource overcommit and reservations, a different Server+ technical control. It does not directly address the reported DHCP scope and relay design fault or prove its repair. For this incident, the relevant principle is: DHCP broadcasts normally need a relay across routed subnets, and leases must match the client network and scope policy.

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