CompTIA 220-1201 Practice Test 77
Question 760
On a service ticket for Harborworks, the team observes: A 24-port switch can power each phone alone but fails when most ports power cameras simultaneously. The desired outcome is to select power-delivery capacity based on per-port and overall PoE requirements. The goal is to restore required function without creating a new security or safety problem. What should support monitor to catch a recurrence of the same failure?
- Monitor wireless channel utilization and retransmission patterns
- Monitor default-gateway reachability and route changes
- Monitor PoE overload events and added device power requirements
- Monitor ONT optical alarms and WAN gateway status separately
Explanation
Correct Answer
C:
Monitor PoE overload events and added device power requirements. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that a 24-port switch can power each phone alone but fails when most ports power cameras simultaneously. The support goal is to select power-delivery capacity based on per-port and overall PoE requirements; this monitor action specifically addresses poe switch power budget without confusing a different subsystem.
Incorrect Answers
A:
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 poe switch power budget instead.
B:
Monitor default-gateway reachability and route changes. This action is appropriate for router versus layer 2 switch forwarding, normally when two PCs on separate IPv4 subnets can communicate within their own LANs but not across subnets. Here the observed facts require poe switch power budget instead.
D:
Monitor ONT optical alarms and WAN gateway status separately. This action is appropriate for ont versus cable modem access equipment, normally when a customer receives a fiber-to-the-premises service but attempts to connect the optical fiber directly to a DOCSIS cable modem. Here the observed facts require poe switch power budget instead.
Question 761
During Northland Labs's branch networking support, the technician encounters this condition: A firewall allows remote desktop to a Windows server but staff cannot browse its shared project folder. The desired outcome is to identify the protocol and port needed for Windows file share access. Only approved service procedures and compatible replacement components may be used. Which verification result supports the intended technical outcome?
- Verify improved wireless contention and connection reliability without assuming the wired tap measured radio noise
- Verify the client receives an address, gateway and DNS options from the correct scope
- Verify mapping succeeds for authorized users while unrelated users remain denied
- Confirm the response succeeds over TCP 53 while ordinary UDP resolution continues
Explanation
Correct Answer
C:
Verify mapping succeeds for authorized users while unrelated users remain denied. It proves the required function with an observable result instead of assuming the change worked. The relevant observation is that a firewall allows remote desktop to a Windows server but staff cannot browse its shared project folder. The support goal is to identify the protocol and port needed for Windows file share access; this validate action specifically addresses smb file sharing port versus rdp without confusing a different subsystem.
Incorrect Answers
A:
Verify improved wireless contention and connection reliability without assuming the wired tap measured radio noise. 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 smb file sharing port versus rdp instead.
B:
Verify the client receives an address, gateway and DNS options from the correct scope. 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 smb file sharing port versus rdp instead.
D:
Confirm the response succeeds over TCP 53 while ordinary UDP resolution continues. This action is appropriate for dns service transport and port 53, normally when a branch resolver answers ordinary UDP name queries but large signed responses fail. Here the observed facts require smb file sharing port versus rdp instead.
Question 762
During Granite Capital's computer equipment refresh, the technician encounters this condition: A two-drive NAS needs continued access after one drive fails rather than the combined capacity of RAID 0. The desired outcome is to choose RAID 1 when simple mirroring is the requirement. A safe non-destructive test must be used before replacing additional parts. Which post-repair signal best detects regression or repeat exposure?
- Monitor drive grouping and failed member replacement
- Monitor driver policy changes and media mismatch errors
- Monitor patrol reads, failed drives and rebuild exposure
- Monitor mirror health and successful independent backups
Explanation
Correct Answer
D:
Monitor mirror health and successful independent backups. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that a two-drive NAS needs continued access after one drive fails rather than the combined capacity of RAID 0. The support goal is to choose RAID 1 when simple mirroring is the requirement; this monitor action specifically addresses raid 1 mirror capacity and resilience without confusing a different subsystem.
Incorrect Answers
A:
Monitor drive grouping and failed member replacement. That action is appropriate for raid 10 mirrored striped array, normally when a database server needs fast disk I/O and redundancy with four equal drives. Here the observed facts require raid 1 mirror capacity and resilience instead.
B:
Monitor driver policy changes and media mismatch errors. This action is appropriate for printer duplex and tray settings, normally when a network printer puts letter-size forms on the wrong paper and uses one-sided output. Here the observed facts require raid 1 mirror capacity and resilience instead.
C:
Monitor patrol reads, failed drives and rebuild exposure. That action is appropriate for raid 5 versus raid 6 dual parity, normally when a four-disk production array must remain available during any two simultaneous drive failures. Here the observed facts require raid 1 mirror capacity and resilience instead.
Question 763
During Cedar Education's desktop hardware service bench, the technician encounters this condition: A builder replaces a modular PSU but wants to reuse its old detachable power leads. The supporting record states that modular power supply connectors are not necessarily pinned identically between models. The desired outcome is to avoid unsafe cross-vendor modular PSU cable substitution. 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
- Calculate component power demand with headroom and inspect ATX plus GPU auxiliary connectors
- Check the device's Thunderbolt markings, controller support and cable type
- Inspect redundancy support, PSU state, power feeds and total load per remaining unit
Explanation
Correct Answer
A:
Check manufacturer-approved cable compatibility for both exact PSU models. It checks the likely failure boundary before altering working parts or settings. The relevant observation is that modular power supply connectors are not necessarily pinned identically between models. The support goal is to avoid unsafe cross-vendor modular PSU cable substitution; this diagnose action specifically addresses modular psu cable safety without confusing a different subsystem.
Incorrect Answers
B:
Calculate component power demand with headroom and inspect ATX plus GPU auxiliary connectors. This 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 modular psu cable safety instead.
C:
Check the device's Thunderbolt markings, controller support and cable type. This 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 modular psu cable safety instead.
D:
Inspect redundancy support, PSU state, power feeds and total load per remaining unit. This 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 modular psu cable safety instead.
Question 764
At Keystone Health, a technician working in laptop and mobile device repair identifies this issue: A dispatch app cannot show a user's current position on an otherwise connected smartphone. The supporting record states that location services are disabled for that specific app though GPS hardware is available. The desired outcome is to restore necessary location access without granting unrelated apps broad tracking. The goal is to restore required function without creating a new security or safety problem. Which controlled service test best evaluates the planned approach?
- Activate the eSIM on a spare enrolled phone using an approved carrier test profile
- Test positioning in a permitted location with permission enabled and disabled
- Pilot managed work apps with a consented BYOD phone and an unprotected personal app
- Connect a test laptop, both monitors and the approved dock power supply in a service area
Explanation
Correct Answer
B:
Test positioning in a permitted location with permission enabled and disabled. It tests the proposed solution safely on an approved representative system. The relevant observation is that location services are disabled for that specific app though GPS hardware is available. The support goal is to restore necessary location access without granting unrelated apps broad tracking; this pilot action specifically addresses location permission for navigation without confusing a different subsystem.
Incorrect Answers
A:
Activate the eSIM on a spare enrolled phone using an approved carrier test profile. This action is appropriate for mobile esim carrier activation, normally when a company phone has cellular signal bars but cannot attach to its assigned business data plan. Here the observed facts require location permission for navigation instead.
C:
Pilot managed work apps with a consented BYOD phone and an unprotected personal app. This action is appropriate for byod mobile application management, normally when staff use personally owned phones to read corporate mail but refuse full device enrollment. Here the observed facts require location permission for navigation instead.
D:
Connect a test laptop, both monitors and the approved dock power supply in a service area. This action is appropriate for docking station display and power capability, normally when a small-business employee connects two monitors and power to a laptop through a new USB-C dock. Here the observed facts require location permission for navigation instead.
Question 765
A support request at Stonebridge Research presents this problem: A smartphone can browse over Wi-Fi but cannot connect to the internet when leaving the office. The supporting record states that the SIM is provisioned and cellular data was manually disabled in device settings. The desired outcome is to distinguish cellular configuration from a working Wi-Fi connection. Only approved service procedures and compatible replacement components may be used. Which configuration or repair action best addresses the stated requirement?
- Remove safe debris using manufacturer-recommended nonconductive methods or arrange service
- Correct the runaway synchronization or app update behavior while preserving necessary notifications
- Enable permitted cellular data and confirm the correct subscriber plan
- Replace the suspect cable and secure connectors without unnecessary GPU replacement
Explanation
Correct Answer
C:
Enable permitted cellular data and confirm the correct subscriber plan. It corrects the documented cause using the compatible technology and support constraints. The relevant observation is that the SIM is provisioned and cellular data was manually disabled in device settings. The support goal is to distinguish cellular configuration from a working Wi-Fi connection; this design action specifically addresses mobile data failure due to disabled cellular without confusing a different subsystem.
Incorrect Answers
A:
Remove safe debris using manufacturer-recommended nonconductive methods or arrange service. 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 mobile data failure due to disabled cellular instead.
B:
Correct the runaway synchronization or app update behavior while preserving necessary notifications. 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 data failure due to disabled cellular instead.
D:
Replace the suspect cable and secure connectors without unnecessary GPU replacement. This 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 mobile data failure due to disabled cellular instead.
Question 766
At Lakeside Analytics, a technician working in small-office network service desk identifies this issue: A new 6 GHz SSID is invisible to several laptops even though 5 GHz works. The supporting record states that the older wireless adapters lack 6 GHz support and some clients are configured for incompatible security modes. The desired outcome is to explain why band and client capabilities must agree before joining 6 GHz Wi-Fi. The technician must document observations separately from assumptions. What should be tracked after the fix to maintain service reliability?
- Watch channel occupancy and weak-signal client retransmission rates
- Monitor lease pool depletion and DHCP relay failures
- Monitor client compatibility and regulatory-domain channel settings after firmware changes
- Monitor NFC reader alignment and Bluetooth pairing failures separately
Explanation
Correct Answer
C:
Monitor client compatibility and regulatory-domain channel settings after firmware changes. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that the older wireless adapters lack 6 GHz support and some clients are configured for incompatible security modes. The support goal is to explain why band and client capabilities must agree before joining 6 GHz Wi-Fi; this monitor action specifically addresses 6 ghz wi-fi client compatibility without confusing a different subsystem.
Incorrect Answers
A:
Watch channel occupancy and weak-signal client retransmission rates. That action is appropriate for 2.4 ghz versus 5 ghz wi-fi trade-offs, normally when a warehouse needs coverage through walls at modest data rates while a crowded office needs faster nearby links. Here the observed facts require 6 ghz wi-fi client compatibility instead.
B:
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 6 ghz wi-fi client compatibility instead.
D:
Monitor NFC reader alignment and Bluetooth pairing failures separately. That action is appropriate for nfc short-range tap versus bluetooth pairing, normally when a checkout kiosk must read a contactless badge at a few centimeters, not stream audio across a room. Here the observed facts require 6 ghz wi-fi client compatibility instead.
Question 767
At Falcon Transit, a technician working in laptop and mobile device repair identifies this issue: A designer needs pen pressure and palm rejection on a convertible laptop. The supporting record states that the screen accepts touch but the proposed inexpensive capacitive stylus has no active digitizer protocol. The desired outcome is to select the accessory matching digitizer features rather than the touch surface alone. Only approved service procedures and compatible replacement components may be used. Which safe pilot action gives the most relevant evidence?
- Test one vendor-approved SODIMM in the serviceable laptop with the battery and power removed
- Test pressure sensitivity and palm rejection using a compatible pen in a drawing app
- Connect a known video-capable test host and compare it with the data-only port
- Connect a test laptop, both monitors and the approved dock power supply in a service area
Explanation
Correct Answer
B:
Test pressure sensitivity and palm rejection using a compatible pen in a drawing app. It tests the proposed solution safely on an approved representative system. The relevant observation is that the screen accepts touch but the proposed inexpensive capacitive stylus has no active digitizer protocol. The support goal is to select the accessory matching digitizer features rather than the touch surface alone; this pilot action specifically addresses active stylus digitizer compatibility without confusing a different subsystem.
Incorrect Answers
A:
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 active stylus digitizer compatibility instead.
C:
Connect a known video-capable test host and compare it with the data-only port. That action is appropriate for usb-c connector versus supported protocol, normally when a user assumes every laptop USB-C port can send video to a USB-C monitor. Here the observed facts require active stylus digitizer compatibility instead.
D:
Connect a test laptop, both monitors and the approved dock power supply in a service area. That action is appropriate for docking station display and power capability, normally when a small-business employee connects two monitors and power to a laptop through a new USB-C dock. Here the observed facts require active stylus digitizer compatibility instead.
Question 768
At Aster Systems, a technician working in branch networking support identifies this issue: A documentation team confuses a smartwatch link with the branch WAN because both are wireless. The desired outcome is to identify network categories from distance and administrative scope. The technician must document observations separately from assumptions. Which diagnostic check best distinguishes the relevant fault?
- Map connected endpoints, geography and link boundaries for each example
- Check subnet masks, default gateways and configured inter-subnet routes
- Confirm provider handoff, optical or coaxial medium and customer Ethernet demarcation
- Inspect measured upload and download speeds, latency and local service eligibility
Explanation
Correct Answer
A:
Map connected endpoints, geography and link boundaries for each example. It checks the likely failure boundary before altering working parts or settings. The relevant observation is that a documentation team confuses a smartwatch link with the branch WAN because both are wireless. The support goal is to identify network categories from distance and administrative scope; this diagnose action specifically addresses pan versus lan versus wan scope without confusing a different subsystem.
Incorrect Answers
B:
Check subnet masks, default gateways and configured inter-subnet routes. That action is appropriate for router versus layer 2 switch forwarding, normally when two PCs on separate IPv4 subnets can communicate within their own LANs but not across subnets. Here the observed facts require pan versus lan versus wan scope instead.
C:
Confirm provider handoff, optical or coaxial medium and customer Ethernet demarcation. This action is appropriate for ont versus cable modem access equipment, normally when a customer receives a fiber-to-the-premises service but attempts to connect the optical fiber directly to a DOCSIS cable modem. Here the observed facts require pan versus lan versus wan scope instead.
D:
Inspect measured upload and download speeds, latency and local service eligibility. That action is appropriate for fiber wan versus dsl last-mile capacity, normally when a remote design office regularly transfers multi-gigabyte files and can order either fiber or DSL. Here the observed facts require pan versus lan versus wan scope instead.
Question 769
On a service ticket for Evergreen Manufacturing, the team observes: A PC technician believes moving the internal disk to first boot position is the same as enabling Secure Boot. The desired outcome is to distinguish boot selection priority from cryptographic boot validation. Service work must follow power isolation, ESD, and manufacturer instructions when applicable. Which acceptance result best demonstrates the issue is resolved?
- Verify drive detection and intended interface performance without forcing a mismatched module
- Verify sustained workload temperatures stay within processor limits and throttling ceases
- Verify signed media boot and unsigned test boot is rejected by policy
- Verify CPU identity, temperature and stability under a controlled load
Explanation
Correct Answer
C:
Verify signed media boot and unsigned test boot is rejected by policy. It proves the required function with an observable result instead of assuming the change worked. The relevant observation is that a PC technician believes moving the internal disk to first boot position is the same as enabling Secure Boot. The support goal is to distinguish boot selection priority from cryptographic boot validation; this validate action specifically addresses uefi secure boot versus boot order without confusing a different subsystem.
Incorrect Answers
A:
Verify drive detection and intended interface performance without forcing a mismatched module. This 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 uefi secure boot versus boot order instead.
B:
Verify sustained workload temperatures stay within processor limits and throttling ceases. This action is appropriate for cpu heatsink thermal interface, normally when a workstation reaches a thermal limit seconds after a cooler was replaced. Here the observed facts require uefi secure boot versus boot order instead.
D:
Verify CPU identity, temperature and stability under a controlled load. This action is appropriate for cpu socket matching motherboard, normally when a gaming PC has a motherboard with an AMD processor socket but an Intel CPU was ordered. Here the observed facts require uefi secure boot versus boot order instead.
Question 770
A support request at Granite Capital presents this problem: A laser printer jams on the first page when it tries to feed paper from tray 1. The supporting record states that the pickup roller is glazed and paper is correctly loaded with no stuck sheets. The desired outcome is to distinguish pickup roller wear from depleted toner. A safe non-destructive test must be used before replacing additional parts. Which safe pilot action gives the most relevant evidence?
- Print a known test pattern after substituting a known-good imaging unit
- Test several sheets from tray 1 after a supported roller service
- Send a harmless test print after correcting the queue target
- Feed a short set of labeled test media in the proper orientation
Explanation
Correct Answer
B:
Test several sheets from tray 1 after a supported roller service. It tests the proposed solution safely on an approved representative system. The relevant observation is that the pickup roller is glazed and paper is correctly loaded with no stuck sheets. The support goal is to distinguish pickup roller wear from depleted toner; this pilot action specifically addresses laser printer repeated paper jams at pickup without confusing a different subsystem.
Incorrect Answers
A:
Print a known test pattern after substituting a known-good imaging unit. That action is appropriate for laser repeated streaks from drum defect, normally when printed laser pages have a dark stripe repeated at the same distance down each sheet. Here the observed facts require laser printer repeated paper jams at pickup instead.
C:
Send a harmless test print after correcting the queue target. This action is appropriate for printer offline queue despite network availability, normally when a shared printer is reachable on the network but user jobs accumulate in an offline queue. Here the observed facts require laser printer repeated paper jams at pickup instead.
D:
Feed a short set of labeled test media in the proper orientation. That action is appropriate for thermal printer paper orientation, normally when a shipping label printer feeds paper but produces completely blank labels. Here the observed facts require laser printer repeated paper jams at pickup instead.
