CompTIA 220-1201 Practice Test 79
Question 780
At Juniper Tech, a technician working in hardware and network incident triage identifies this issue: A new NVMe SSD is absent from firmware and the storage installer. The supporting record states that motherboard documentation shows one M.2 socket is SATA-only while the installed drive requires PCIe lanes. The desired outcome is to identify storage slot signaling incompatibility before declaring the SSD defective. User data and business service continuity must be preserved. Which planned change most directly resolves the documented issue?
- Replace the confirmed failed member and rebuild using the controller's documented procedure
- Enable permitted cellular data and confirm the correct subscriber plan
- Move the NVMe drive to a supported PCIe-capable slot or use the correct SATA M.2 model
- Move the verified OS boot entry ahead of the empty disk in firmware
Explanation
Correct Answer
C:
Move the NVMe drive to a supported PCIe-capable slot or use the correct SATA M.2 model. It corrects the documented cause using the compatible technology and support constraints. The relevant observation is that motherboard documentation shows one M.2 socket is SATA-only while the installed drive requires PCIe lanes. The support goal is to identify storage slot signaling incompatibility before declaring the SSD defective; this design action specifically addresses nvme ssd not detected after installation without confusing a different subsystem.
Incorrect Answers
A:
Replace the confirmed failed member and rebuild using the controller's documented procedure. That action is appropriate for degraded raid after a failed member, normally when a mirrored NAS reports one disk failed while files remain available. Here the observed facts require nvme ssd not detected after installation instead.
B:
Enable permitted cellular data and confirm the correct subscriber plan. This action is appropriate for mobile data failure due to disabled cellular, normally when a smartphone can browse over Wi-Fi but cannot connect to the internet when leaving the office. Here the observed facts require nvme ssd not detected after installation instead.
D:
Move the verified OS boot entry ahead of the empty disk in firmware. That action is appropriate for uefi boot order after a second drive, normally when a computer reports no bootable operating system after a new secondary drive was added. Here the observed facts require nvme ssd not detected after installation instead.
Question 781
During Acorn Foods's end-user troubleshooting, the technician encounters this condition: A technician finds a compacted pocket-lint plug inside a handset charging receptacle. The desired outcome is to isolate a connector obstruction without damaging live charging contacts. A safe non-destructive test must be used before replacing additional parts. What should the technician verify first to establish the problem?
- Inspect the port for lint, bent pins, moisture indicator and cable seating with power disconnected
- Check cellular toggle, SIM or eSIM provisioning, airplane mode and signal state
- Inspect per-app usage, background refresh, radio activity and battery health metrics
- Check resolver settings, DNS request responses and direct-IP reachability
Explanation
Correct Answer
A:
Inspect the port for lint, bent pins, moisture indicator and cable seating with power disconnected. It checks the likely failure boundary before altering working parts or settings. The relevant observation is that a technician finds a compacted pocket-lint plug inside a handset charging receptacle. The support goal is to isolate a connector obstruction without damaging live charging contacts; this diagnose action specifically addresses mobile charging port debris without confusing a different subsystem.
Incorrect Answers
B:
Check cellular toggle, SIM or eSIM provisioning, airplane mode and signal state. That action is appropriate for mobile data failure due to disabled cellular, normally when a smartphone can browse over Wi-Fi but cannot connect to the internet when leaving the office. Here the observed facts require mobile charging port debris instead.
C:
Inspect per-app usage, background refresh, radio activity and battery health metrics. That action is appropriate for background app mobile battery drain, normally when a business phone loses most of its battery overnight despite a healthy battery test. Here the observed facts require mobile charging port debris instead.
D:
Check resolver settings, DNS request responses and direct-IP reachability. This action is appropriate for dns failure with working ip connectivity, normally when a workstation opens a service directly by numeric IP but says its hostname cannot be resolved. Here the observed facts require mobile charging port debris instead.
Question 782
At Summit Media, a technician working in laptop and mobile device repair identifies this issue: A business laptop has a lifted trackpad and a visibly swollen internal lithium-ion battery. The supporting record states that the case is deformed and the manufacturer specifies a model-specific service battery. The desired outcome is to remove the battery hazard safely without puncturing the cells. Only approved service procedures and compatible replacement components may be used. Which controlled service test best evaluates the planned approach?
- On a powered-off service unit, reseat the antenna leads with the correct nonconductive tool
- Test one vendor-approved SODIMM in the serviceable laptop with the battery and power removed
- Have a trained technician isolate power and remove the swollen unit using manufacturer service steps
- Restore a non-sensitive test backup to the new SSD and verify recovery-key retrieval in a controlled service workflow
Explanation
Correct Answer
C:
Have a trained technician isolate power and remove the swollen unit using manufacturer service steps. It tests the proposed solution safely on an approved representative system. The relevant observation is that the case is deformed and the manufacturer specifies a model-specific service battery. The support goal is to remove the battery hazard safely without puncturing the cells; this pilot action specifically addresses swollen laptop battery replacement without confusing a different subsystem.
Incorrect Answers
A:
On a powered-off service unit, reseat the antenna leads with the correct nonconductive tool. This action is appropriate for laptop wi-fi antenna reconnection, normally when after a laptop display assembly replacement, Bluetooth works but Wi-Fi signal is very weak. Here the observed facts require swollen laptop battery replacement instead.
B:
Test one vendor-approved SODIMM in the serviceable laptop with the battery and power removed. This action is appropriate for laptop sodimm compatibility, normally when a field technician wants to add RAM to a serviceable laptop that currently uses DDR4 SODIMMs. Here the observed facts require swollen laptop battery replacement instead.
D:
Restore a non-sensitive test backup to the new SSD and verify recovery-key retrieval in a controlled service workflow. This action is appropriate for laptop ssd replacement and encryption, normally when a laptop SSD is failing SMART health checks and holds company data protected with full-disk encryption. Here the observed facts require swollen laptop battery replacement instead.
Question 783
During Clearwater Telecom's desktop hardware service bench, the technician encounters this condition: An office server needs to stay online when one power supply module fails. The supporting record states that its chassis accepts two redundant hot-swap PSU modules on independent power feeds. The desired outcome is to choose a supported redundant power configuration and test failover safely. Only approved service procedures and compatible replacement components may be used. Which acceptance result best demonstrates the issue is resolved?
- Verify stable component power without damaged devices or hot connectors
- Verify the machine remains stable under expected combined CPU and GPU draw
- Verify the server remains online and generates the expected module failure alert
- Verify memory training succeeds at an approved speed with no diagnostic errors
Explanation
Correct Answer
C:
Verify the server remains online and generates the expected module failure alert. It proves the required function with an observable result instead of assuming the change worked. The relevant observation is that its chassis accepts two redundant hot-swap PSU modules on independent power feeds. The support goal is to choose a supported redundant power configuration and test failover safely; this validate action specifically addresses redundant psu failover without confusing a different subsystem.
Incorrect Answers
A:
Verify stable component power without damaged devices or hot connectors. That action is appropriate for modular psu cable safety, normally when a builder replaces a modular PSU but wants to reuse its old detachable power leads. Here the observed facts require redundant psu failover instead.
B:
Verify the machine remains stable under expected combined CPU and GPU draw. That action is appropriate for psu wattage and 20+4 atx connector, normally when a desktop upgrade adds a high-power GPU and the PC abruptly powers off during intensive graphics workloads. Here the observed facts require redundant psu failover instead.
D:
Verify memory training succeeds at an approved speed with no diagnostic errors. This action is appropriate for ddr generation electrical compatibility, normally when a replacement RAM order has the correct capacity but the wrong DDR generation. Here the observed facts require redundant psu failover instead.
Question 784
During Silverline Travel's hardware and network incident triage, the technician encounters this condition: A tower PC has no LEDs, fans, or POST activity after the user changed power outlets. The supporting record states that the AC cable and switched outlet are unverified and there is no sign the PSU receives input. The desired outcome is to isolate basic external power before replacing the motherboard. User data and business service continuity must be preserved. How should the solution first be tested on an approved spare or pilot system?
- Power the PC from a verified test outlet and known-good cord without opening the energized PSU
- Boot with one known-good compatible DIMM and vary only one module at a time
- Boot a test configuration with supported onboard video after safely removing the add-in GPU
- Repeat a controlled combined load on a test system with a known-good supply
Explanation
Correct Answer
A:
Power the PC from a verified test outlet and known-good cord without opening the energized PSU. It tests the proposed solution safely on an approved representative system. The relevant observation is that the AC cable and switched outlet are unverified and there is no sign the PSU receives input. The support goal is to isolate basic external power before replacing the motherboard; this pilot action specifically addresses completely dead desktop power path without confusing a different subsystem.
Incorrect Answers
B:
Boot with one known-good compatible DIMM and vary only one module at a time. That action is appropriate for desktop memory fault preventing post, normally when a desktop powers on but gives a repeating memory-related beep pattern and no display. Here the observed facts require completely dead desktop power path instead.
C:
Boot a test configuration with supported onboard video after safely removing the add-in GPU. That action is appropriate for post beep code interpretation and expansion-card isolation, normally when a newly upgraded desktop beeps at startup and shows no BIOS screen. Here the observed facts require completely dead desktop power path instead.
D:
Repeat a controlled combined load on a test system with a known-good supply. This action is appropriate for psu instability under peak component load, normally when a machine passes idle checks but reboots when the GPU and CPU draw peak power together. Here the observed facts require completely dead desktop power path instead.
Question 785
A support request at Silverline Travel presents this problem: A branch resolver answers ordinary UDP name queries but large signed responses fail. The supporting record states that the firewall permits UDP 53 while blocking TCP 53 between clients and the resolver. The desired outcome is to recognize that DNS may require both UDP and TCP transport on port 53. Service work must follow power isolation, ESD, and manufacturer instructions when applicable. What should support monitor to catch a recurrence of the same failure?
- Monitor SMB connection failures and excessive port 445 exposure
- Monitor DNS truncation, TCP retries and firewall denial logs
- Monitor lease pool depletion and DHCP relay failures
- Monitor failed SSH logins and unexpected re-enablement of Telnet
Explanation
Correct Answer
B:
Monitor DNS truncation, TCP retries and firewall denial logs. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that the firewall permits UDP 53 while blocking TCP 53 between clients and the resolver. The support goal is to recognize that DNS may require both UDP and TCP transport on port 53; this monitor action specifically addresses dns service transport and port 53 without confusing a different subsystem.
Incorrect Answers
A:
Monitor SMB connection failures and excessive port 445 exposure. This action is appropriate for smb file sharing port versus rdp, normally when a user can ping a shared Windows file server but cannot map a network share. Here the observed facts require dns service transport and port 53 instead.
C:
Monitor lease pool depletion and DHCP relay failures. This action is appropriate for dhcp client and server port roles, normally when a new PC never receives an IPv4 lease on its office VLAN. Here the observed facts require dns service transport and port 53 instead.
D:
Monitor failed SSH logins and unexpected re-enablement of Telnet. This action is appropriate for ssh encrypted administration instead of telnet, normally when an administrator needs secure terminal access to a managed switch over an untrusted support network. Here the observed facts require dns service transport and port 53 instead.
Question 786
On a service ticket for Falcon Transit, the team observes: A desktop stops at a boot-device prompt after an extra blank SSD is installed. The desired outcome is to restore the intended boot entry without formatting healthy storage. Only approved service procedures and compatible replacement components may be used. Which post-repair signal best detects regression or repeat exposure?
- Monitor firmware resets and missing boot entries
- Monitor rebuild progress and additional SMART failures
- Monitor BIOS lane-sharing changes and unsupported replacement drive orders
- Monitor SMART warnings and backup success across endpoints
Explanation
Correct Answer
A:
Monitor firmware resets and missing boot entries. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that a desktop stops at a boot-device prompt after an extra blank SSD is installed. The support goal is to restore the intended boot entry without formatting healthy storage; this monitor action specifically addresses uefi boot order after a second drive without confusing a different subsystem.
Incorrect Answers
B:
Monitor rebuild progress and additional SMART failures. That action is appropriate for degraded raid after a failed member, normally when a mirrored NAS reports one disk failed while files remain available. Here the observed facts require uefi boot order after a second drive instead.
C:
Monitor BIOS lane-sharing changes and unsupported replacement drive orders. That action is appropriate for nvme ssd not detected after installation, normally when a new NVMe SSD is absent from firmware and the storage installer. Here the observed facts require uefi boot order after a second drive instead.
D:
Monitor SMART warnings and backup success across endpoints. This action is appropriate for s.m.a.r.t. warning and imminent drive failure, normally when a desktop disk reports increasing reallocated sectors and read retries. Here the observed facts require uefi boot order after a second drive instead.
Question 787
On a service ticket for Riverlight Retail, the team observes: A help desk wants to troubleshoot crowded 2.4 GHz airspace but only has a wired network tap. The desired outcome is to use an RF analysis tool for interference assessment rather than wired packet capture. The goal is to restore required function without creating a new security or safety problem. What should the technician verify first to establish the problem?
- Inspect channel utilization, RSSI and channel overlap in the affected room
- Inspect cable labels, both jack ends and tester wiremap indications
- Inspect application health checks, backend pool membership and where client requests enter
- Compare effective TCP 445 connectivity, SMB service state and share authorization
Explanation
Correct Answer
A:
Inspect channel utilization, RSSI and channel overlap in the affected room. It checks the likely failure boundary before altering working parts or settings. The relevant observation is that a help desk wants to troubleshoot crowded 2.4 GHz airspace but only has a wired network tap. The support goal is to use an RF analysis tool for interference assessment rather than wired packet capture; this diagnose action specifically addresses wi-fi analyzer versus network tap without confusing a different subsystem.
Incorrect Answers
B:
Inspect cable labels, both jack ends and tester wiremap indications. That action is appropriate for cable tester versus toner and probe, normally when a technician must determine whether a terminated Ethernet run has crossed wires and split pairs. Here the observed facts require wi-fi analyzer versus network tap instead.
C:
Inspect application health checks, backend pool membership and where client requests enter. This action is appropriate for load balancer versus proxy server functions, normally when a web service needs requests distributed across three application servers with failed nodes removed automatically. Here the observed facts require wi-fi analyzer versus network tap instead.
D:
Compare effective TCP 445 connectivity, SMB service state and share authorization. That action is appropriate for smb file sharing port versus rdp, normally when a user can ping a shared Windows file server but cannot map a network share. Here the observed facts require wi-fi analyzer versus network tap instead.
Question 788
At Aster Systems, a technician working in hardware and network incident triage identifies this issue: A monitor intermittently goes black when its display cable is moved. The supporting record states that the computer remains running and a spare certified video cable is available. The desired outcome is to determine whether a physical video link is causing intermittent display loss. The technician must document observations separately from assumptions. Which diagnostic check best distinguishes the relevant fault?
- Check cable damage, connector strain, monitor input selection and GPU outputs
- Review native panel resolution, current OS scaling and cable mode limits
- Confirm selected input, cable path, external display detection and output mode
- Inspect brightness controls, display cable, backlight power and serviceable panel components
Explanation
Correct Answer
A:
Check cable damage, connector strain, monitor input selection and GPU outputs. It checks the likely failure boundary before altering working parts or settings. The relevant observation is that the computer remains running and a spare certified video cable is available. The support goal is to determine whether a physical video link is causing intermittent display loss; this diagnose action specifically addresses intermittent monitor image due to video cable without confusing a different subsystem.
Incorrect Answers
B:
Review native panel resolution, current OS scaling and cable mode limits. This action is appropriate for wrong screen resolution and scaling, normally when a user complains that desktop text is blurry after changing to a nonnative display resolution. Here the observed facts require intermittent monitor image due to video cable instead.
C:
Confirm selected input, cable path, external display detection and output mode. That action is appropriate for projector wrong input versus computer failure, normally when a conference room projector displays a no-signal message while the laptop works locally. Here the observed facts require intermittent monitor image due to video cable instead.
D:
Inspect brightness controls, display cable, backlight power and serviceable panel components. That action is appropriate for backlight failure on laptop lcd, normally when a laptop screen looks black but a flashlight reveals a faint intact desktop image. Here the observed facts require intermittent monitor image due to video cable instead.
Question 789
During Harborworks's end-user troubleshooting, the technician encounters this condition: A tablet becomes hot in a backpack because one application retries a cloud sync every few seconds. The desired outcome is to identify energy consumption from software activity rather than immediately swapping the battery. Only approved service procedures and compatible replacement components may be used. Which verification result supports the intended technical outcome?
- Verify overnight consumption falls without breaking required work synchronization
- Verify the array returns to healthy state and files match known checksums
- Verify mobile data works within coverage while Wi-Fi remains optional
- Verify stable charging without pressure or unusual heat
Explanation
Correct Answer
A:
Verify overnight consumption falls without breaking required work synchronization. It proves the required function with an observable result instead of assuming the change worked. The relevant observation is that a tablet becomes hot in a backpack because one application retries a cloud sync every few seconds. The support goal is to identify energy consumption from software activity rather than immediately swapping the battery; this validate action specifically addresses background app mobile battery drain without confusing a different subsystem.
Incorrect Answers
B:
Verify the array returns to healthy state and files match known checksums. This action is appropriate for degraded raid after a failed member, normally when a mirrored NAS reports one disk failed while files remain available. Here the observed facts require background app mobile battery drain instead.
C:
Verify mobile data works within coverage while Wi-Fi remains optional. That action is appropriate for mobile data failure due to disabled cellular, normally when a smartphone can browse over Wi-Fi but cannot connect to the internet when leaving the office. Here the observed facts require background app mobile battery drain instead.
D:
Verify stable charging without pressure or unusual heat. That action is appropriate for mobile charging port debris, normally when a phone charges intermittently only when its USB-C plug is held at an angle. Here the observed facts require background app mobile battery drain instead.
Question 790
A support request at Westbrook Energy presents this problem: An online storefront sees traffic triple for two hours and then fall back to normal. The supporting record states that the chosen cloud platform supports automatically adding and removing application capacity by demand. The desired outcome is to recognize elasticity as capacity adjustment to changing utilization. Service work must follow power isolation, ESD, and manufacturer instructions when applicable. What should the technician verify first to establish the problem?
- Inspect provider tenancy model, contractual isolation guarantees and application data boundaries
- Identify where services run and whether there is functional integration between deployment models
- Inspect monitoring metrics, scaling policies and resource quotas
- Inspect billing dimensions for storage, requests, ingress and outbound transfer
Explanation
Correct Answer
C:
Inspect monitoring metrics, scaling policies and resource quotas. It checks the likely failure boundary before altering working parts or settings. The relevant observation is that the chosen cloud platform supports automatically adding and removing application capacity by demand. The support goal is to recognize elasticity as capacity adjustment to changing utilization; this diagnose action specifically addresses cloud elasticity versus fixed provisioning without confusing a different subsystem.
Incorrect Answers
A:
Inspect provider tenancy model, contractual isolation guarantees and application data boundaries. This action is appropriate for multitenancy versus dedicated cloud resources, normally when an organization uses a SaaS platform shared with several customer organizations. Here the observed facts require cloud elasticity versus fixed provisioning instead.
B:
Identify where services run and whether there is functional integration between deployment models. This action is appropriate for public versus private versus hybrid cloud, normally when an enterprise must keep one legacy regulatory workload in its own datacenter while scaling an unrelated web front end in a public provider. Here the observed facts require cloud elasticity versus fixed provisioning instead.
D:
Inspect billing dimensions for storage, requests, ingress and outbound transfer. This action is appropriate for metered cloud ingress and egress costs, normally when an organization expects to store modest data in cloud storage but regularly exports terabytes to an on-premises analytics platform. Here the observed facts require cloud elasticity versus fixed provisioning instead.
