CompTIA 220-1201 Practice Test 43
Question 420
On a service ticket for Pioneer Markets, the team observes: A desktop repair requires replacement memory but the spare part comes from a notebook. The supporting record states that the desktop has full-length DIMM sockets and the spare is a short SODIMM. The desired outcome is to recognize memory module form factors and physical socket compatibility. The goal is to restore required function without creating a new security or safety problem. Which post-repair signal best detects regression or repeat exposure?
- Monitor unsupported module combinations and BIOS fallback settings
- Monitor corrected memory events and growing error rates
- Monitor optical attenuation and connector contamination
- Monitor inventory bins for mixed laptop and desktop memory modules
Explanation
Correct Answer
D:
Monitor inventory bins for mixed laptop and desktop memory modules. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that the desktop has full-length DIMM sockets and the spare is a short SODIMM. The support goal is to recognize memory module form factors and physical socket compatibility; this monitor action specifically addresses sodimm versus dimm form factor without confusing a different subsystem.
Incorrect Answers
A:
Monitor unsupported module combinations and BIOS fallback settings. That 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 sodimm versus dimm form factor instead.
B:
Monitor corrected memory events and growing error rates. That action is appropriate for ecc memory error correction compatibility, normally when a workstation used for scientific computation requires supported correction of single-bit RAM errors. Here the observed facts require sodimm versus dimm form factor instead.
C:
Monitor optical attenuation and connector contamination. This action is appropriate for single-mode versus multimode fiber, normally when a campus backbone spans several kilometers between buildings and requires high throughput. Here the observed facts require sodimm versus dimm form factor instead.
Question 421
On a service ticket for Keystone Health, the team observes: A mail migration fails because administrators edit an SPF string instead of the MX record. The desired outcome is to distinguish mail routing records from sender authorization policies. Only approved service procedures and compatible replacement components may be used. What should be tracked after the fix to maintain service reliability?
- Monitor reservation conflicts and device MAC replacement
- Monitor wireless channel utilization and retransmission patterns
- Monitor mail bounce reports and unauthorized TXT or MX record drift
- Monitor VLAN trunk policy and remote VPN session errors as distinct controls
Explanation
Correct Answer
C:
Monitor mail bounce reports and unauthorized TXT or MX record drift. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that a mail migration fails because administrators edit an SPF string instead of the MX record. The support goal is to distinguish mail routing records from sender authorization policies; this monitor action specifically addresses mx and spf dns records distinct purposes without confusing a different subsystem.
Incorrect Answers
A:
Monitor reservation conflicts and device MAC replacement. This action is appropriate for dhcp reservation versus exclusion, normally when a networked printer must keep the same IPv4 address while the rest of the office remains DHCP-managed. Here the observed facts require mx and spf dns records distinct purposes instead.
B:
Monitor wireless channel utilization and retransmission patterns. This action is appropriate for wi-fi analyzer versus network tap, normally when staff complain about busy wireless channels in a meeting room. Here the observed facts require mx and spf dns records distinct purposes instead.
D:
Monitor VLAN trunk policy and remote VPN session errors as distinct controls. This action is appropriate for vlan segmentation versus vpn encrypted tunneling, normally when a small office needs guest Wi-Fi isolated from payroll devices but also needs secure remote employee access. Here the observed facts require mx and spf dns records distinct purposes instead.
Question 422
At Lakeside Analytics, a technician working in end-user troubleshooting identifies this issue: A mobile handheld scanner disappears from Bluetooth when a coworker's phone enters the room. The desired outcome is to differentiate Bluetooth accessory power and pairing from WLAN connection quality. The technician must document observations separately from assumptions. What should be tracked after the fix to maintain service reliability?
- Monitor battery warnings and unexpected device handoffs
- Monitor data caps, roaming restrictions and carrier registration changes
- Monitor SMART warnings and backup success across endpoints
- Monitor repeat cable wear, overheating and loose plug fit
Explanation
Correct Answer
A:
Monitor battery warnings and unexpected device handoffs. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that a mobile handheld scanner disappears from Bluetooth when a coworker's phone enters the room. The support goal is to differentiate Bluetooth accessory power and pairing from WLAN connection quality; this monitor action specifically addresses bluetooth accessory reconnect failure without confusing a different subsystem.
Incorrect Answers
B:
Monitor data caps, roaming restrictions and carrier registration changes. 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 bluetooth accessory reconnect failure instead.
C:
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 bluetooth accessory reconnect failure instead.
D:
Monitor repeat cable wear, overheating and loose plug fit. This 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 bluetooth accessory reconnect failure instead.
Question 423
At Bluefin Logistics, a technician working in cloud and desktop infrastructure review identifies this issue: A datacenter team wants direct server virtualization instead of a developer's hosted VM application. The desired outcome is to choose the hypervisor class appropriate for dedicated host operation. The customer requires a verified fix rather than a guess based on one symptom. Which inspection most directly confirms the likely cause before changing components?
- Identify whether the hypervisor runs directly on hardware or above a host desktop OS
- Check host OS, available RAM, processor virtualization and supported desktop hypervisor
- Compare kernel sharing, image contents and isolation requirements
- Inspect desktop hosting, identity, storage and endpoint access requirements
Explanation
Correct Answer
A:
Identify whether the hypervisor runs directly on hardware or above a host desktop OS. It checks the likely failure boundary before altering working parts or settings. The relevant observation is that a datacenter team wants direct server virtualization instead of a developer's hosted VM application. The support goal is to choose the hypervisor class appropriate for dedicated host operation; this diagnose action specifically addresses type 1 versus type 2 hypervisors without confusing a different subsystem.
Incorrect Answers
B:
Check host OS, available RAM, processor virtualization and supported desktop hypervisor. This action is appropriate for hosted type 2 virtualization for testing, normally when a help desk engineer needs an isolated test operating system on an existing laptop. Here the observed facts require type 1 versus type 2 hypervisors instead.
C:
Compare kernel sharing, image contents and isolation requirements. This action is appropriate for container isolation versus full virtual machine, normally when a team needs to package one web service and its dependencies but not another complete guest kernel. Here the observed facts require type 1 versus type 2 hypervisors instead.
D:
Inspect desktop hosting, identity, storage and endpoint access requirements. This action is appropriate for vdi versus local desktop processing, normally when a company wants centrally managed user desktops accessed from inexpensive endpoints. Here the observed facts require type 1 versus type 2 hypervisors instead.
Question 424
During Orchard Services's hardware and network incident triage, the technician encounters this condition: A desk phone and PC stop reaching their correct services after a switch port change. The supporting record states that the switch now assigns the desk port to the guest VLAN instead of the approved employee and voice VLAN configuration. The desired outcome is to diagnose incorrect VLAN port policy rather than replacing healthy endpoints. Service work must follow power isolation, ESD, and manufacturer instructions when applicable. Which controlled service test best evaluates the planned approach?
- Pilot an alternate AP channel in a safe window while measuring client retry rate
- Compare a known-good cable before and after a controlled authorized port inspection
- Resolve an approved internal hostname from a test client using the corrected DNS server
- Test one authorized phone-and-PC desk port with corrected tagged and untagged VLANs
Explanation
Correct Answer
D:
Test one authorized phone-and-PC desk port with corrected tagged and untagged VLANs. It tests the proposed solution safely on an approved representative system. The relevant observation is that the switch now assigns the desk port to the guest VLAN instead of the approved employee and voice VLAN configuration. The support goal is to diagnose incorrect VLAN port policy rather than replacing healthy endpoints; this pilot action specifically addresses vlan mismatch causing one desk to lose access without confusing a different subsystem.
Incorrect Answers
A:
Pilot an alternate AP channel in a safe window while measuring client retry rate. This action is appropriate for intermittent wi-fi due to channel interference, normally when users near a lunchroom suffer slow 2.4 GHz Wi-Fi at peak periods while wired links stay normal. Here the observed facts require vlan mismatch causing one desk to lose access instead.
B:
Compare a known-good cable before and after a controlled authorized port inspection. This 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 vlan mismatch causing one desk to lose access instead.
C:
Resolve an approved internal hostname from a test client using the corrected DNS server. 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 vlan mismatch causing one desk to lose access instead.
Question 425
During Juniper Tech's branch networking support, the technician encounters this condition: A video production studio needs much higher upstream bandwidth than its ageing DSL circuit provides. The desired outcome is to select an ISP connection type according to real throughput and availability. User data and business service continuity must be preserved. Which controlled service test best evaluates the planned approach?
- Test representative file transfers through a trial fiber connection within provider limits
- Test TCP 445 and open a harmless authorized file on a staging share
- Collect a short approved RF survey before and after changing the test AP channel
- Sketch a hypothetical watch-to-phone, office switch, and remote-site circuit topology
Explanation
Correct Answer
A:
Test representative file transfers through a trial fiber connection within provider limits. It tests the proposed solution safely on an approved representative system. The relevant observation is that a video production studio needs much higher upstream bandwidth than its ageing DSL circuit provides. The support goal is to select an ISP connection type according to real throughput and availability; this pilot action specifically addresses fiber wan versus dsl last-mile capacity without confusing a different subsystem.
Incorrect Answers
B:
Test TCP 445 and open a harmless authorized file on a staging share. 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 fiber wan versus dsl last-mile capacity instead.
C:
Collect a short approved RF survey before and after changing the test AP channel. That action is appropriate for wi-fi analyzer versus network tap, normally when staff complain about busy wireless channels in a meeting room. Here the observed facts require fiber wan versus dsl last-mile capacity instead.
D:
Sketch a hypothetical watch-to-phone, office switch, and remote-site circuit topology. That action is appropriate for pan versus lan versus wan scope, normally when a technician must classify a Bluetooth watch connection, office Ethernet and multi-site leased link. Here the observed facts require fiber wan versus dsl last-mile capacity instead.
Question 426
During Aster Systems's hardware and network incident triage, the technician encounters this condition: 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 configuration or repair action best addresses the stated requirement?
- Set native resolution with suitable display scaling for text size
- Replace the suspect cable and secure connectors without unnecessary GPU replacement
- Repair the supported backlight or panel power assembly after confirming external video health
- Select the correct HDMI input and supported duplicate or extend mode
Explanation
Correct Answer
B:
Replace the suspect cable and secure connectors without unnecessary GPU replacement. It corrects the documented cause using the compatible technology and support constraints. 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 design action specifically addresses intermittent monitor image due to video cable without confusing a different subsystem.
Incorrect Answers
A:
Set native resolution with suitable display scaling for text size. 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:
Repair the supported backlight or panel power assembly after confirming external video health. This 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.
D:
Select the correct HDMI input and supported duplicate or extend mode. This 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.
Question 427
A support request at Clearwater Telecom presents this problem: A phone charges intermittently only when its USB-C plug is held at an angle. The supporting record states that the charger and cable charge another device and debris is visible near the phone port. The desired outcome is to isolate a connector obstruction without damaging live charging contacts. The customer requires a verified fix rather than a guess based on one symptom. Which acceptance result best demonstrates the issue is resolved?
- Verify stable charging without pressure or unusual heat
- Verify scan input stays stable during a full approved shift-length trial
- Verify overnight consumption falls without breaking required work synchronization
- Verify mobile data works within coverage while Wi-Fi remains optional
Explanation
Correct Answer
A:
Verify stable charging without pressure or unusual heat. It proves the required function with an observable result instead of assuming the change worked. The relevant observation is that the charger and cable charge another device and debris is visible near the phone port. The support goal is to isolate a connector obstruction without damaging live charging contacts; this validate action specifically addresses mobile charging port debris without confusing a different subsystem.
Incorrect Answers
B:
Verify scan input stays stable during a full approved shift-length trial. This action is appropriate for bluetooth accessory reconnect failure, normally when a tablet repeatedly loses a wireless barcode scanner despite normal Wi-Fi service. Here the observed facts require mobile charging port debris instead.
C:
Verify overnight consumption falls without breaking required work synchronization. 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:
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 mobile charging port debris instead.
Question 428
At Silverline Travel, a technician working in end-user troubleshooting identifies this issue: A meeting projector shows no image because it is set to VGA while the laptop uses HDMI. The desired outcome is to resolve a display source-selection issue without reinstalling graphics drivers. Service work must follow power isolation, ESD, and manufacturer instructions when applicable. Which configuration or repair action best addresses the stated requirement?
- Replace the failed cooling fan and correct airflow or thermal interface as indicated
- Repair the supported backlight or panel power assembly after confirming external video health
- Select the correct HDMI input and supported duplicate or extend mode
- Replace the suspect cable and secure connectors without unnecessary GPU replacement
Explanation
Correct Answer
C:
Select the correct HDMI input and supported duplicate or extend mode. It corrects the documented cause using the compatible technology and support constraints. The relevant observation is that a meeting projector shows no image because it is set to VGA while the laptop uses HDMI. The support goal is to resolve a display source-selection issue without reinstalling graphics drivers; this design action specifically addresses projector wrong input versus computer failure without confusing a different subsystem.
Incorrect Answers
A:
Replace the failed cooling fan and correct airflow or thermal interface as indicated. This action is appropriate for cpu overheat from failed fan, normally when a desktop shuts off only after several minutes of high CPU utilization. Here the observed facts require projector wrong input versus computer failure instead.
B:
Repair the supported backlight or panel power assembly after confirming external video health. 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 projector wrong input versus computer failure instead.
D:
Replace the suspect cable and secure connectors without unnecessary GPU replacement. That action is appropriate for intermittent monitor image due to video cable, normally when a monitor intermittently goes black when its display cable is moved. Here the observed facts require projector wrong input versus computer failure instead.
Question 429
During Fountain Transport's desktop hardware service bench, the technician encounters this condition: A campus backbone spans several kilometers between buildings and requires high throughput. The supporting record states that the planned multimode optic supports too short a reach for the installed path while suitable single-mode optics exist. The desired outcome is to choose optical media and transceivers matched to distance and wavelength. Only approved service procedures and compatible replacement components may be used. Which verification result supports the intended technical outcome?
- Verify secure latching, firmware recognition and memory diagnostics
- Verify the negotiated link and measured transfer rate match the supported mode
- Confirm the optical receive power and link speed meet both transceiver specifications
- Verify drive detection and intended interface performance without forcing a mismatched module
Explanation
Correct Answer
C:
Confirm the optical receive power and link speed meet both transceiver specifications. It proves the required function with an observable result instead of assuming the change worked. The relevant observation is that the planned multimode optic supports too short a reach for the installed path while suitable single-mode optics exist. The support goal is to choose optical media and transceivers matched to distance and wavelength; this validate action specifically addresses single-mode versus multimode fiber without confusing a different subsystem.
Incorrect Answers
A:
Verify secure latching, firmware recognition and memory diagnostics. This action is appropriate for sodimm versus dimm form factor, normally when a desktop repair requires replacement memory but the spare part comes from a notebook. Here the observed facts require single-mode versus multimode fiber instead.
B:
Verify the negotiated link and measured transfer rate match the supported mode. That action is appropriate for usb-c versus thunderbolt port capability, normally when an external high-bandwidth storage enclosure only negotiates low speed on a laptop USB-C connector. Here the observed facts require single-mode versus multimode fiber instead.
D:
Verify drive detection and intended interface performance without forcing a mismatched module. That action is appropriate for nvme pcie versus sata storage interface, normally when a technician orders an M.2 SSD for a motherboard slot that supports only SATA signaling. Here the observed facts require single-mode versus multimode fiber instead.
Question 430
During Silverline Travel's computer equipment refresh, the technician encounters this condition: A builder swaps in a low-wattage supply that lacks the required eight-pin GPU feed. The desired outcome is to select an adequately rated power supply with correct board and GPU connectors. A safe non-destructive test must be used before replacing additional parts. Which diagnostic check best distinguishes the relevant fault?
- Check manufacturer-approved cable compatibility for both exact PSU models
- Inspect redundancy support, PSU state, power feeds and total load per remaining unit
- Calculate component power demand with headroom and inspect ATX plus GPU auxiliary connectors
- Inspect workload random I/O, storage interface, capacity and endurance
Explanation
Correct Answer
C:
Calculate component power demand with headroom and inspect ATX plus GPU auxiliary connectors. It checks the likely failure boundary before altering working parts or settings. The relevant observation is that a builder swaps in a low-wattage supply that lacks the required eight-pin GPU feed. The support goal is to select an adequately rated power supply with correct board and GPU connectors; this diagnose action specifically addresses psu wattage and 20+4 atx connector without confusing a different subsystem.
Incorrect Answers
A:
Check manufacturer-approved cable compatibility for both exact PSU models. 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 psu wattage and 20+4 atx connector instead.
B:
Inspect redundancy support, PSU state, power feeds and total load per remaining unit. That action is appropriate for redundant psu failover, normally when an office server needs to stay online when one power supply module fails. Here the observed facts require psu wattage and 20+4 atx connector instead.
D:
Inspect workload random I/O, storage interface, capacity and endurance. This action is appropriate for ssd versus hdd latency and interface, normally when a mobile user needs low-latency storage and shock resistance but a procurement request specifies a 5400 RPM hard disk. Here the observed facts require psu wattage and 20+4 atx connector instead.
