220-1201 Practice Test 27 — 15 Questions

Question 1

A user's 4K monitor is set to 3840x2160 resolution but text and icons appear very small and blurry. The display cable is a standard HDMI cable. What is the most likely cause of the blurriness?

Accepted Answer

The HDMI cable does not support enough bandwidth for 4K resolution. Standard HDMI cables (especially older versions) may not have sufficient bandwidth for 4K at proper refresh rates, leading to chroma subsampling and blurry text. The correct answer identifies bandwidth limitation as the cause, and the solution would be to use a high-speed HDMI or DisplayPort cable.

Answer

The monitor's refresh rate is set too high

Answer

The graphics driver is corrupted

Answer

The monitor's scaling settings are incorrect

Question 2

A user reports that their laptop's built-in display shows distorted colors and horizontal lines, but when they connect an external monitor via VGA, the external display works perfectly. What is the most likely cause?

Accepted Answer

The laptop's LCD panel or its video cable is damaged. The external monitor works perfectly via VGA, which bypasses the laptop's internal LCD panel and its video cable. Distorted colors and horizontal lines on the built-in display, combined with a flawless external display, isolate the fault to the LCD panel assembly or the LVDS/eDP cable connecting the panel to the motherboard. The GPU and driver are shared between both displays, so they cannot be the cause when the external display functions correctly.

Answer

The laptop's GPU is failing

Answer

The VGA cable is defective

Answer

The display driver is corrupt

Question 3

A technician is setting up a new server that must always have the same IP address on a network using DHCP. The network administrator wants to avoid manually configuring the server's IP to prevent misconfiguration. Which method should be used to ensure the server receives the same IP from the DHCP server?

Accepted Answer

Configure a DHCP reservation on the router for the server's MAC address.. A DHCP reservation binds the server's MAC address to a specific IP address on the DHCP server. This ensures the server always receives the same IP from the DHCP pool without requiring manual static configuration, which aligns with the administrator's goal of avoiding misconfiguration.

Answer

Set the server to use a static IP address outside the DHCP scope.

Answer

Set the server's IP address to 169.254.x.x.

Answer

Disable the server's network adapter and re-enable it.

Question 4

A customer brings in an all-in-one PC that has a cracked LCD screen. The touch function still works, but the display shows a large black area with spiderweb cracks. The customer wants the cheapest fix. What should you recommend?

Accepted Answer

Replace the whole all-in-one unit.. A cracked LCD screen requires replacement of the entire display panel, which is often as expensive as the whole unit for all-in-ones. Because the touch layer still works, the damage is to the LCD layer beneath. The most cost-effective solution is usually to replace the entire all-in-one, as screen replacement labor and parts can be prohibitive.

Answer

Replace only the touch digitizer layer.

Answer

Replace the entire LCD panel assembly.

Answer

Use a screen repair kit to fill the cracks.

Question 5

A user reports that their computer cannot connect to a network share. The technician runs ipconfig and sees an IP address of 169.254.1.5. What is the most likely cause?

Accepted Answer

The DHCP server is unavailable or unreachable. The IP address 169.254.1.5 is an Automatic Private IP Addressing (APIPA) address, assigned by Windows when a DHCP discovery fails. This indicates the client could not reach a DHCP server to obtain a valid lease, making the DHCP server unavailable or unreachable the most likely cause.

Answer

The DNS server is not resolving the share name

Answer

The network cable is unplugged or faulty

Answer

The user's account does not have permission to access the share

Question 6

A client wants to set up a network in a single large warehouse where employees use handheld scanners to track inventory. The scanners need to communicate with a central server located in the same building, but no internet access is required. Which network type should be configured?

Accepted Answer

Local Area Network (LAN). A Local Area Network (LAN) is the correct choice because it connects devices within a limited geographic area, such as a single warehouse, using high-speed Ethernet or Wi-Fi. The handheld scanners and central server need to communicate locally without internet access, which is the defining characteristic of a LAN. Technologies like IEEE 802.3 (Ethernet) or IEEE 802.11 (Wi-Fi) provide the necessary low-latency, high-bandwidth connectivity for real-time inventory tracking.

Answer

Wide Area Network (WAN)

Answer

Personal Area Network (PAN)

Answer

Metropolitan Area Network (MAN)

Question 7

A user's smartphone intermittently disconnects from a known Wi-Fi network when they move to a different room. The network uses a single access point. What is the most likely cause?

Accepted Answer

The smartphone is connecting to the 5 GHz band, which has poor wall penetration.. The 5 GHz band offers higher data rates but has significantly poorer wall penetration and range compared to the 2.4 GHz band. When the user moves to a different room, the signal from the single access point attenuates more rapidly at 5 GHz, causing intermittent disconnections. This is the most likely cause because the problem is location-dependent and occurs with a known network.

Answer

The access point is overloaded with too many clients.

Answer

The smartphone's MAC address is being filtered.

Answer

The smartphone's battery saver mode is turning off Wi-Fi.

Question 8

A user reports that their smartphone can connect to Wi-Fi at home but not at the office. Other devices connect fine to the office Wi-Fi. What is the most likely cause?

Accepted Answer

The smartphone has the wrong Wi-Fi password or security type saved.. The smartphone can connect at home but not at the office, while other devices connect fine to the office Wi-Fi. This points to a client-side configuration mismatch, most likely an incorrect password or security type (e.g., WPA2 vs. WPA3) saved on the phone. A damaged antenna or out-of-range router would affect all connections, and a static IP conflict would typically cause intermittent issues, not a complete failure to associate.

Answer

The smartphone's Wi-Fi antenna is damaged.

Answer

The office Wi-Fi router is out of range.

Answer

The smartphone's IP address is static and conflicting.

Question 9

A technician is deploying 50 company-owned Android tablets for field workers. The tablets must only run a single custom business app and prevent users from accessing any other apps or settings. Which configuration method should the technician use?

Accepted Answer

Use a Mobile Device Management (MDM) solution to configure kiosk mode.. A Mobile Device Management (MDM) solution with kiosk mode is the correct approach because it locks the device to a single app, disables access to system settings, and prevents users from launching other applications. MDM enforces this via device policy controllers (DPC) and Android's lock task mode, which cannot be bypassed by the user. This meets the requirement of deploying 50 tablets with a single custom business app and no access to other apps or settings.

Answer

Enable 'Developer options' and set the app as the default launcher.

Answer

Perform a factory reset and install only the custom app.

Answer

Remove the Google Play Store app from the device.

Question 10

A server in a data center has redundant power supplies (1+1 configuration). One PSU's status LED is amber, and the other is green. The server continues to run normally. What action should be taken?

Accepted Answer

Replace the PSU with the amber LED immediately. An amber LED on a redundant PSU indicates a fault or warning, but the server remains operational on the other PSU. The faulty unit should be replaced as soon as possible to restore redundancy. Ignoring it risks downtime if the second PSU fails.

Answer

Do nothing because the server is still running

Answer

Swap the two PSUs to see if the amber LED follows

Answer

Reset the PSU by unplugging and replugging it

Question 11

A technician is configuring a new router for a client who has a fiber-optic internet connection. Which type of interface is most likely used to connect the router to the ISP's ONT (Optical Network Terminal)?

Accepted Answer

Ethernet (RJ45). The correct interface is Ethernet (RJ45) because the ONT typically converts the fiber-optic signal from the ISP into a standard electrical Ethernet signal, which is then delivered to the customer's router via a copper Ethernet cable. Most residential and small business fiber installations use an RJ45 port on the ONT to connect to the router's WAN interface, supporting speeds up to 1 Gbps or higher using 1000BASE-T.

Answer

Coaxial (F-type)

Answer

RJ11 (phone jack)

Answer

Fiber patch cable (LC connector)

Question 12

A technician is configuring a RAID array in a server that requires both high performance and fault tolerance. The server has four identical 2TB SATA HDDs. The RAID controller supports RAID 0, 1, 5, and 10. Which RAID level should the technician choose to meet both requirements?

Accepted Answer

RAID 10. This question tests understanding of RAID levels and their trade-offs. RAID 10 (striping + mirroring) provides both performance (striping) and fault tolerance (mirroring), but requires at least 4 drives. RAID 5 offers fault tolerance with parity but has slower write performance. RAID 0 has no fault tolerance, and RAID 1 only provides fault tolerance with no performance gain.

Answer

RAID 0

Answer

RAID 1

Answer

RAID 5

Question 13

A customer reports that their internet connection drops frequently during rainstorms. They have a DSL line and a standard modem. Which factor most likely causes this issue?

Accepted Answer

Moisture in the copper line causes signal degradation.. DSL operates over copper telephone lines, which are susceptible to moisture ingress during rainstorms. Water in the line increases signal attenuation and introduces impedance mismatches, causing the modem to lose synchronization with the DSLAM. This results in frequent disconnections, as the DSL signal degrades below the threshold required for a stable link.

Answer

The modem's power supply is failing.

Answer

The customer's router is overheating.

Answer

The ISP is throttling the connection during storms.

Question 14

A user reports that their desktop computer's display is very dim, even at maximum brightness settings. The monitor is an older LCD model with a CCFL backlight. What component is most likely failing?

Accepted Answer

The inverter board. The inverter board is responsible for converting DC power from the power supply into the high-voltage AC required to drive the CCFL (cold cathode fluorescent lamp) backlight in older LCD monitors. When the inverter fails, the backlight either dims significantly or fails entirely, even though the LCD panel itself may still be receiving a valid video signal and the brightness controls appear to function. This matches the symptom of a very dim display at maximum brightness settings.

Answer

The LCD panel itself

Answer

The video cable

Answer

The power supply unit

Question 15

A customer reports that their new desktop PC runs for exactly 30 minutes and then shuts down. After the shutdown, the system won't power back on for several minutes. What is the most likely BIOS/UEFI-related cause of this behavior?

Accepted Answer

The BIOS thermal protection feature is triggering due to CPU overheating.. This scenario describes thermal shutdown protection. The BIOS/UEFI monitors CPU temperature via sensors and will shut down the system to prevent damage if temperatures exceed safe thresholds. The delay before restarting allows the CPU to cool down.

Answer

The BIOS has a power-on password enabled.

Answer

The BIOS is set to the wrong CPU multiplier.

Answer

The UEFI boot order is set to network boot first.