220-1201 Practice Test 44 — 15 Questions

Question 1

A small office has intermittent network dropouts. A technician suspects electromagnetic interference (EMI) from nearby fluorescent lights affecting the unshielded twisted-pair (UTP) cables. Which tool can best confirm the presence of EMI on the cable?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Cable certifier. A cable certifier is the correct tool because it can measure crosstalk, return loss, and other electrical characteristics that reveal the presence of EMI on UTP cables. Unlike simple continuity testers, a certifier performs frequency-domain analysis (e.g., up to 500 MHz for Cat6a) to detect noise and interference that cause intermittent dropouts.

Answer

Tone generator

Answer

Ping

Answer

Wi-Fi analyzer

Question 2

A user's laptop screen has a small crack in the corner, and the display shows lines and discoloration in that area. The rest of the screen works. What is the most cost-effective solution?

Accepted Answer

Replace the LCD panel.. The LCD panel contains the glass substrate and liquid crystal layer that physically cracks, causing localized lines and discoloration. Replacing just the LCD panel (the display assembly) is the most cost-effective solution because it restores full functionality without the expense of a new laptop or the inconvenience of a permanent external monitor. The display cable is unlikely to cause a crack or localized discoloration, as cable damage typically affects the entire screen or causes intermittent issues.

Answer

Replace the entire laptop.

Answer

Replace the display cable.

Answer

Use an external monitor permanently.

Question 3

A user reports that their computer connected to a wall jack works fine, but when they move the computer to a different desk and plug into a different wall jack, there is no network connectivity. The switch port shows no link light. What is the most likely cause?

Accepted Answer

The wall jack is terminated incorrectly.. The most likely cause is that the wall jack at the new desk is terminated incorrectly, such as a miswired T568A/T568B standard or a broken punch-down connection. Since the computer works at the original jack and the switch port shows no link light, the issue is isolated to the new cabling path, not the NIC or switch configuration. Incorrect termination can cause a physical layer failure, preventing the switch from detecting a carrier signal.

Answer

The computer's NIC is faulty.

Answer

The patch cable is not a crossover cable.

Answer

The switch port is administratively down.

Question 4

A technician is installing a new network drop in a warehouse where the cable must run near high-voltage machinery. The run is 60 meters. Which type of cable should be used to minimize interference?

Accepted Answer

STP Cat6a cable.. STP Cat6a cable includes a conductive shield that protects against electromagnetic interference (EMI) from nearby high-voltage machinery. The 60-meter run is well within Cat6a's 100-meter maximum segment length, making it the best choice for this environment.

Answer

UTP Cat6 cable.

Answer

Coaxial RG-6 cable.

Answer

Fiber optic cable.

Question 5

A technician is setting up a conference room where a laptop must connect to a large display for presentations. The display supports HDMI, DisplayPort, and USB-C. The laptop only has a USB-C port that supports DisplayPort Alt Mode. Which cable should the technician use to connect the laptop to the display?

Accepted Answer

USB-C to HDMI cable. The laptop's USB-C port supports DisplayPort Alt Mode, which allows it to output a video signal over the USB-C connection. The display supports HDMI, so a USB-C to HDMI cable is the correct choice because it converts the DisplayPort Alt Mode signal from the laptop into an HDMI-compatible signal for the display, without needing any active adapter or additional power.

Answer

USB-C to USB-C cable

Answer

USB-C to DisplayPort cable

Answer

USB-C to VGA cable

Question 6

A technician is troubleshooting a desktop PC that displays a blank screen on boot. The monitor's power LED is on (green), but no image appears. The PC beeps once during startup, and the hard drive activity light flashes. Which component is most likely faulty?

Accepted Answer

The video card. The single beep and hard drive activity indicate that the POST (Power-On Self-Test) has passed for the CPU and RAM, isolating the issue to the video subsystem. Since the monitor's power LED is green (receiving power) but no image appears, the most likely faulty component is the video card, which is responsible for generating the display signal.

Answer

The CPU

Answer

The RAM

Answer

The monitor's power supply

Question 7

A technician is setting up a mobile point-of-sale system for a small retail store. The tablet needs to be mounted on the counter and remain powered throughout the day. Which two accessories are essential for this deployment?

Accepted Answer

A stand and a charging dock.. A stand securely mounts the tablet on the counter at an ergonomic viewing angle, while a charging dock provides continuous power to keep the tablet operational throughout the day without battery depletion. These two accessories directly address the deployment requirements of fixed mounting and uninterrupted power for a stationary point-of-sale system.

Answer

A rugged case and a Bluetooth keyboard.

Answer

A screen protector and a stylus.

Answer

A portable battery pack and a car charger.

Question 8

A technician is replacing a cracked screen on a tablet. After removing the digitizer and LCD assembly, they notice the home button flex cable is torn. The tablet still has a physical home button. What should the technician do to ensure the repair is complete and the home button functions?

Accepted Answer

Replace the home button flex cable with a new one.. A torn flex cable cannot be reliably repaired by soldering or taping due to the fine pitch and multilayer construction of modern tablet flex cables. Replacing the entire home button flex cable assembly is the only method that restores the electrical continuity and mechanical integrity required for the physical home button to function properly.

Answer

Solder the torn ends of the flex cable together.

Answer

Use electrical tape to hold the torn cable together.

Answer

Ignore the tear and reassemble the tablet.

Question 9

A technician is troubleshooting a network drop that was working yesterday but now has no link light at the switch. The cable run is 80 meters and passes through a conduit. Which tool should be used first to isolate the problem?

Accepted Answer

A cable tester.. A cable tester (often a wiremap tester) is the first tool to use when verifying basic connectivity and physical layer issues like broken wires, shorts, or miswiring. Since the link light is absent and the cable was working before, the most likely cause is a physical fault in the 80-meter run, and a cable tester can quickly confirm continuity and pinout without requiring advanced diagnostics.

Answer

A tone generator and probe.

Answer

A multimeter.

Answer

A time-domain reflectometer (TDR).

Question 10

A user complains that text on their new 27-inch 4K monitor appears very small and hard to read. The display is set to its native resolution. What is the most effective way to make text readable without sacrificing image quality?

Accepted Answer

Increase the display scaling percentage in OS settings. At the native 4K resolution (3840x2160), pixels are densely packed, making UI elements physically tiny. Increasing the display scaling percentage (e.g., to 150% or 200%) instructs the OS to render text and icons at a larger logical size while keeping the monitor at its native resolution, preserving full sharpness and detail. This is the standard solution for high-DPI displays.

Answer

Reduce the screen resolution to 1920x1080

Answer

Replace the monitor with a lower-resolution model

Answer

Adjust the monitor's physical sharpness setting

Question 11

A company has a network with multiple VLANs. A user in VLAN 10 cannot access a server in VLAN 20, but other users in VLAN 10 can access the server. The technician checks the switch configuration and finds that the port for the user is set to access mode for VLAN 10. What should be configured to allow this user to reach the server?

Accepted Answer

Enable inter-VLAN routing on the router or Layer 3 switch. The user in VLAN 10 cannot reach the server in VLAN 20 because they are in different subnets. Even though the switch port is correctly configured for VLAN 10, traffic between VLANs requires a Layer 3 device (router or Layer 3 switch) to perform inter-VLAN routing. Enabling this on the router or Layer 3 switch allows the user's packets to be forwarded from VLAN 10 to VLAN 20.

Answer

Change the user's port to trunk mode

Answer

Configure a static route on the user's computer

Answer

Assign the user's port to VLAN 20

Question 12

A customer reports that their desktop computer, which is connected to the network via a wall jack, can access the internet but cannot see other computers on the same local network. The network uses a single switch and a router. What is the most likely misconfiguration causing this issue?

Accepted Answer

The computer's network profile is set to 'Public', disabling Network Discovery.. When a Windows computer's network profile is set to 'Public', the Windows Firewall automatically enables the 'Public' profile rules, which block Network Discovery and file sharing. This prevents the computer from seeing other devices on the local subnet even though internet access (which uses the default gateway) remains functional. The symptom—internet works but LAN visibility fails—is a classic indicator of a network profile misconfiguration.

Answer

The switch is a hub, not a switch.

Answer

The router is blocking multicast traffic.

Answer

The Ethernet cable is a crossover cable.

Question 13

A user reports that their tablet's screen is completely black but the device vibrates when powered on. You have already tried a forced restart and checked for physical damage. What is the most likely hardware cause?

Accepted Answer

The LCD panel or display ribbon cable is faulty.. The device vibrating on power-on indicates the system board, processor, and power management are functioning, but the display subsystem is not. Since a forced restart and physical damage inspection have been ruled out, the most likely hardware cause is a faulty LCD panel or a damaged display ribbon cable connecting the mainboard to the screen. This explains why the device is operational (vibration) yet the screen remains black.

Answer

The battery is completely drained.

Answer

The digitizer is cracked.

Answer

The OS is corrupted.

Question 14

A user reports that their laptop can connect to the internet when using a wired connection at home, but cannot connect to any network resources when using Wi-Fi at the office. The office uses DHCP with a scope of 192.168.10.0/24. The laptop's IP configuration shows an address of 169.254.15.22. What is the most likely cause of this issue?

Accepted Answer

The laptop cannot reach the DHCP server on the office network.. The IP address 169.254.15.22 is an Automatic Private IP Addressing (APIPA) address (169.254.0.0/16), which Windows assigns when a DHCP client fails to receive a lease from a DHCP server. Since the laptop can connect via wired Ethernet at home but not via Wi-Fi at the office, the most likely cause is that the Wi-Fi adapter cannot communicate with the office DHCP server, preventing it from obtaining a valid 192.168.10.0/24 address.

Answer

The laptop's Wi-Fi adapter is disabled in Device Manager.

Answer

The office DHCP server is out of available IP addresses.

Answer

The laptop's DNS settings are misconfigured.

Question 15

During a site survey, a technician finds that a new access point on the 2.4 GHz band is experiencing heavy interference. The access point automatically selected channel 6. Which action should the technician take to minimize interference?

Accepted Answer

Change the channel to 1 or 11.. In the 2.4 GHz band, only channels 1, 6, and 11 are non-overlapping (each occupies 22 MHz with 5 MHz spacing). Since channel 6 is already experiencing heavy interference, moving to channel 1 or 11 avoids co-channel and adjacent-channel interference from other devices on or near channel 6, minimizing contention.

Answer

Enable WPA3 encryption to reduce interference.

Answer

Set the channel width to 40 MHz.

Answer

Disable the 2.4 GHz radio and use only 5 GHz.