CompTIA 220-1201 Practice Test 78
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.
Question 771
On a service ticket for Bluefin Logistics, the team observes: A new router comes with a legacy wireless security mode that corporate policy prohibits. The desired outcome is to configure wireless authentication matching modern supported clients and documented business exceptions. Only approved service procedures and compatible replacement components may be used. Which inspection most directly confirms the likely cause before changing components?
- Inspect DHCP client settings, network link and offer/relay visibility
- Check client capabilities, AP firmware and current WLAN security settings
- Inspect measured upload and download speeds, latency and local service eligibility
- Review the client's IP, subnet mask, next-hop address and ARP resolution
Explanation
Correct Answer
B:
Check client capabilities, AP firmware and current WLAN security settings. It checks the likely failure boundary before altering working parts or settings. The relevant observation is that a new router comes with a legacy wireless security mode that corporate policy prohibits. The support goal is to configure wireless authentication matching modern supported clients and documented business exceptions; this diagnose action specifically addresses soho wireless wpa security setup without confusing a different subsystem.
Incorrect Answers
A:
Inspect DHCP client settings, network link and offer/relay visibility. That action is appropriate for apipa 169.254.x.x missing dhcp lease, normally when a SOHO laptop automatically assigns itself 169.254.42.19 with a 255.255.0.0 mask. Here the observed facts require soho wireless wpa security setup instead.
C:
Inspect measured upload and download speeds, latency and local service eligibility. This 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 soho wireless wpa security setup instead.
D:
Review the client's IP, subnet mask, next-hop address and ARP resolution. That action is appropriate for ipv4 subnet mask and gateway selection, normally when a small office workstation has 192.168.10.80/24 and a gateway incorrectly set to 192.168.11.1. Here the observed facts require soho wireless wpa security setup instead.
Question 772
At Acorn Foods, a technician working in branch networking support identifies this issue: An office adds a second VLAN but expects an unmanaged switch alone to connect both IP subnets. The desired outcome is to identify routing versus local Ethernet switching responsibilities. Any configuration change must be reversible and validated on a controlled test device. What observation would verify successful service restoration?
- Verify all ports supply stable power at maximum expected simultaneous load
- Verify permitted inter-subnet traffic succeeds and disallowed networks remain isolated
- Verify internet access and signal status follow the approved provider equipment path
- Confirm each device succeeds through its intended radio without conflating protocols
Explanation
Correct Answer
B:
Verify permitted inter-subnet traffic succeeds and disallowed networks remain isolated. It proves the required function with an observable result instead of assuming the change worked. The relevant observation is that an office adds a second VLAN but expects an unmanaged switch alone to connect both IP subnets. The support goal is to identify routing versus local Ethernet switching responsibilities; this validate action specifically addresses router versus layer 2 switch forwarding without confusing a different subsystem.
Incorrect Answers
A:
Verify all ports supply stable power at maximum expected simultaneous load. That action is appropriate for poe switch power budget, normally when new IP cameras power off when all connected access points and phones start at once. Here the observed facts require router versus layer 2 switch forwarding instead.
C:
Verify internet access and signal status follow the approved provider equipment path. That 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 router versus layer 2 switch forwarding instead.
D:
Confirm each device succeeds through its intended radio without conflating protocols. This 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 router versus layer 2 switch forwarding instead.
Question 773
On a service ticket for Cedar Education, the team observes: A small office needs guest Wi-Fi isolated from payroll devices but also needs secure remote employee access. The supporting record states that guest and payroll devices share a local switch while remote users traverse the public internet. The desired outcome is to separate local network segmentation requirements from remote encrypted connectivity. User data and business service continuity must be preserved. Which verification result supports the intended technical outcome?
- Verify incoming mail resolves to the right mail exchanger and SPF evaluates approved senders
- Confirm the same address returns on renewal and is not leased to another client
- Verify guest traffic cannot reach payroll while VPN users reach their approved internal resources
- Confirm each segment is classified by scope rather than the brand of equipment
Explanation
Correct Answer
C:
Verify guest traffic cannot reach payroll while VPN users reach their approved internal resources. It proves the required function with an observable result instead of assuming the change worked. The relevant observation is that guest and payroll devices share a local switch while remote users traverse the public internet. The support goal is to separate local network segmentation requirements from remote encrypted connectivity; this validate action specifically addresses vlan segmentation versus vpn encrypted tunneling without confusing a different subsystem.
Incorrect Answers
A:
Verify incoming mail resolves to the right mail exchanger and SPF evaluates approved senders. This action is appropriate for mx and spf dns records distinct purposes, normally when a domain receives email at the wrong destination after DNS changes. Here the observed facts require vlan segmentation versus vpn encrypted tunneling instead.
B:
Confirm the same address returns on renewal and is not leased to another client. 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 vlan segmentation versus vpn encrypted tunneling instead.
D:
Confirm each segment is classified by scope rather than the brand of equipment. This 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 vlan segmentation versus vpn encrypted tunneling instead.
Question 774
A support request at Evergreen Manufacturing presents this problem: A desk display flickers whenever someone nudges a damaged DisplayPort cable. The desired outcome is to determine whether a physical video link is causing intermittent display loss. Any configuration change must be reversible and validated on a controlled test device. Which safe pilot action gives the most relevant evidence?
- Test a compatible known-good panel with safe power isolation
- Use a safe test presentation and cycle between known connected projector inputs
- Swap only the display cable on a known-good test monitor
- Pilot an alternate AP channel in a safe window while measuring client retry rate
Explanation
Correct Answer
C:
Swap only the display cable on a known-good test monitor. It tests the proposed solution safely on an approved representative system. The relevant observation is that a desk display flickers whenever someone nudges a damaged DisplayPort cable. The support goal is to determine whether a physical video link is causing intermittent display loss; this pilot action specifically addresses intermittent monitor image due to video cable without confusing a different subsystem.
Incorrect Answers
A:
Test a compatible known-good panel with safe power isolation. 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.
B:
Use a safe test presentation and cycle between known connected projector inputs. 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:
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 intermittent monitor image due to video cable instead.
Question 775
A support request at Amberline Finance presents this problem: A desktop's wired NIC repeatedly disconnects when a frayed Ethernet lead moves. The desired outcome is to isolate physical cable or connector failure before changing network services. A safe non-destructive test must be used before replacing additional parts. Which safe pilot action gives the most relevant evidence?
- Resolve an approved internal hostname from a test client using the corrected DNS server
- Pilot an alternate AP channel in a safe window while measuring client retry rate
- Test a compatible known-good panel with safe power isolation
- Use a certified spare patch cable and run a non-destructive cable wiremap test
Explanation
Correct Answer
D:
Use a certified spare patch cable and run a non-destructive cable wiremap test. It tests the proposed solution safely on an approved representative system. The relevant observation is that a desktop's wired NIC repeatedly disconnects when a frayed Ethernet lead moves. The support goal is to isolate physical cable or connector failure before changing network services; this pilot action specifically addresses copper ethernet link flapping without confusing a different subsystem.
Incorrect Answers
A:
Resolve an approved internal hostname from a test client using the corrected DNS server. That 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 copper ethernet link flapping instead.
B:
Pilot an alternate AP channel in a safe window while measuring client retry rate. That 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 copper ethernet link flapping instead.
C:
Test a compatible known-good panel with safe power isolation. 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 copper ethernet link flapping instead.
Question 776
A support request at Bluefin Logistics presents this problem: An older laptop has an empty DDR4 memory socket but procurement ordered desktop DIMMs. The desired outcome is to select physically and electrically compatible mobile memory. The technician must document observations separately from assumptions. Which acceptance result best demonstrates the issue is resolved?
- Verify pressure levels vary correctly and resting the hand does not draw unintended strokes
- Compare Wi-Fi received signal strength and roaming stability before and after reconnection
- Confirm user files and boot integrity are restored and encryption reports protected state
- Verify BIOS reports the expected memory and extended diagnostics pass without errors
Explanation
Correct Answer
D:
Verify BIOS reports the expected memory and extended diagnostics pass without errors. It proves the required function with an observable result instead of assuming the change worked. The relevant observation is that an older laptop has an empty DDR4 memory socket but procurement ordered desktop DIMMs. The support goal is to select physically and electrically compatible mobile memory; this validate action specifically addresses laptop sodimm compatibility without confusing a different subsystem.
Incorrect Answers
A:
Verify pressure levels vary correctly and resting the hand does not draw unintended strokes. This action is appropriate for active stylus digitizer compatibility, normally when a designer needs pen pressure and palm rejection on a convertible laptop. Here the observed facts require laptop sodimm compatibility instead.
B:
Compare Wi-Fi received signal strength and roaming stability before and after reconnection. That 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 laptop sodimm compatibility instead.
C:
Confirm user files and boot integrity are restored and encryption reports protected state. That 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 laptop sodimm compatibility instead.
Question 777
On a service ticket for Pioneer Markets, the team observes: Two same-shaped modular PSU plugs have different wiring assignments even though they latch into place. The desired outcome is to avoid unsafe cross-vendor modular PSU cable substitution. Only approved service procedures and compatible replacement components may be used. Which inspection most directly confirms the likely cause before changing components?
- Check manufacturer-approved cable compatibility for both exact PSU models
- Inspect redundancy support, PSU state, power feeds and total load per remaining unit
- Check touch controller reporting and the glass digitizer surface instead of replacing the inverter
- Calculate component power demand with headroom and inspect ATX plus GPU auxiliary connectors
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 two same-shaped modular PSU plugs have different wiring assignments even though they latch into place. 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:
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 modular psu cable safety instead.
C:
Check touch controller reporting and the glass digitizer surface instead of replacing the inverter. This action is appropriate for digitizer input versus backlight inverter, normally when a convertible LCD image is visible but finger touches no longer register at a specific region. Here the observed facts require modular psu cable safety instead.
D:
Calculate component power demand with headroom and inspect ATX plus GPU auxiliary connectors. 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 modular psu cable safety instead.
Question 778
At Vertex Media, a technician working in laptop and mobile device repair identifies this issue: A user assumes every laptop USB-C port can send video to a USB-C monitor. The supporting record states that the port supports USB data and charging but not DisplayPort Alternate Mode. The desired outcome is to differentiate connector shape from electrical and protocol capabilities. The customer requires a verified fix rather than a guess based on one symptom. What should be tracked after the fix to maintain service reliability?
- Monitor dock firmware updates, disconnected displays and charging warnings
- Monitor reconnection failures and the headset's remembered-device limit
- Track incompatible adapter purchases and port capability labeling
- Monitor sync errors, account duplication and mobile data restrictions
Explanation
Correct Answer
C:
Track incompatible adapter purchases and port capability labeling. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that the port supports USB data and charging but not DisplayPort Alternate Mode. The support goal is to differentiate connector shape from electrical and protocol capabilities; this monitor action specifically addresses usb-c connector versus supported protocol without confusing a different subsystem.
Incorrect Answers
A:
Monitor dock firmware updates, disconnected displays and charging warnings. 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 usb-c connector versus supported protocol instead.
B:
Monitor reconnection failures and the headset's remembered-device limit. That action is appropriate for bluetooth headset pairing, normally when a wireless headset pairs with a tablet but does not appear on a new laptop's device discovery list. Here the observed facts require usb-c connector versus supported protocol instead.
D:
Monitor sync errors, account duplication and mobile data restrictions. This action is appropriate for mobile calendar and contact synchronization, normally when a user's phone receives mail but calendar edits never appear on the company laptop. Here the observed facts require usb-c connector versus supported protocol instead.
Question 779
On a service ticket for Aster Systems, the team observes: A PC shows a hypervisor unavailable error until processor virtualization is enabled in UEFI. The desired outcome is to identify firmware virtualization prerequisites for a supported VM platform. Only approved service procedures and compatible replacement components may be used. What should support monitor to catch a recurrence of the same failure?
- Monitor VDI broker availability, logon time and display latency
- Monitor excessive host memory consumption and stale test VMs
- Monitor BIOS updates that reset virtualization support
- Monitor old snapshots and backup restore-test failures
Explanation
Correct Answer
C:
Monitor BIOS updates that reset virtualization support. It tracks recurrence of the specific failure mechanism over time. The relevant observation is that a PC shows a hypervisor unavailable error until processor virtualization is enabled in UEFI. The support goal is to identify firmware virtualization prerequisites for a supported VM platform; this monitor action specifically addresses virtualization cpu extensions without confusing a different subsystem.
Incorrect Answers
A:
Monitor VDI broker availability, logon time and display latency. That 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 virtualization cpu extensions instead.
B:
Monitor excessive host memory consumption and stale test VMs. That 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 virtualization cpu extensions instead.
D:
Monitor old snapshots and backup restore-test failures. This action is appropriate for vm snapshot versus independent backup, normally when a developer calls a local VM snapshot a complete disaster recovery backup. Here the observed facts require virtualization cpu extensions instead.
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.
