220-1201 Practice Test 22 — 15 Questions

Question 1

A user complains that their iOS device's screen brightness automatically dims when using a particular streaming app, but stays normal with other apps. The auto-brightness setting is enabled. What is the most likely reason?

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

Accepted Answer

The app has its own brightness control that is set to dim.. Many streaming apps implement their own brightness control logic, often to optimize video playback or reduce power consumption. When the app's internal brightness setting is configured to dim, it overrides the system's auto-brightness for that specific app, causing the screen to dim only while the app is active. This is a common behavior in apps that manage their own display parameters independently of the iOS system settings.

Answer

The app is using HDR content, which requires lower brightness.

Answer

The device's ambient light sensor is malfunctioning.

Answer

The device is overheating and throttling brightness.

Question 2

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 3

A user reports that their new Thunderbolt 4 external GPU (eGPU) is not recognized by their laptop, which has a Thunderbolt 4 port. The eGPU works on another laptop. Which connector-related issue is most likely?

Accepted Answer

The cable used is a passive USB-C cable, not an active Thunderbolt 4 cable.. Thunderbolt 4 requires an active cable for full functionality, and a passive USB-C cable may not carry the PCIe signal needed for eGPU operation. This tests understanding of Thunderbolt cable requirements and the difference between passive and active cables.

Answer

The laptop's Thunderbolt 4 port is disabled in BIOS.

Answer

The eGPU requires a Thunderbolt 3 port, not Thunderbolt 4.

Answer

The laptop's Thunderbolt 4 port is not providing enough power.

Question 4

A small office uses a network switch with 24 RJ45 ports to connect all workstations. The switch is connected to the router via a single uplink port. Users report intermittent network drops. The technician suspects a faulty cable between the switch and router. Which tool should be used to test the cable?

Accepted Answer

Cable tester. A cable tester verifies continuity, wiring, and signal integrity in Ethernet cables. This is the correct tool to diagnose a faulty physical connection between the switch and router.

Answer

Tone generator and probe

Answer

Loopback plug

Answer

Multimeter

Question 5

A technician is deploying a fleet of tablets for field workers. The tablets need to connect to a cellular network for data, but the company wants to minimize data usage. Which setting should the technician configure on each tablet?

Accepted Answer

Enable data saver mode.. Enabling Data Saver mode restricts background data usage and limits non-essential app activity, directly reducing cellular data consumption. This is the most appropriate setting for field workers who need to stay connected but minimize data costs, as it works at the OS level to restrict background syncs and downloads without disabling connectivity.

Answer

Disable Wi-Fi.

Answer

Enable airplane mode.

Answer

Set the preferred network type to 5G.

Question 6

A technician is deploying a wireless network in a large warehouse with metal shelving. The goal is to provide seamless roaming for handheld scanners. Which technology should the technician implement to ensure clients quickly switch between access points without dropping connections?

Accepted Answer

Enable 802.11r (Fast Roaming) on the access points. 802.11r, also known as Fast BSS Transition or Fast Roaming, enables clients to authenticate and reassociate with a new access point using a cached PMK (Pairwise Master Key) from the initial full authentication, reducing the handshake process from four EAP frames to two. In a warehouse with metal shelving causing signal attenuation, this minimizes the time clients spend scanning and reconnecting, ensuring seamless roaming for handheld scanners without dropping connections.

Answer

Use a wireless mesh topology

Answer

Configure beamforming on each access point

Answer

Deploy MIMO antennas

Question 7

A technician is replacing the battery in a slim laptop where the battery is glued inside the chassis. After removing the bottom cover, the technician sees the battery is firmly attached with adhesive. What is the safest method to remove the battery without damaging the laptop?

Accepted Answer

Apply isopropyl alcohol around the battery edges to weaken the adhesive, then gently pry with a plastic spudger.. Isopropyl alcohol (90% or higher) safely weakens the adhesive bond without damaging the battery or surrounding components. Using a plastic spudger to gently pry after applying alcohol minimizes the risk of puncturing the lithium-ion battery, which could cause a fire or chemical leak. This method is the industry-recommended approach for glued-in batteries in slim laptops.

Answer

Use a flathead screwdriver to pry the battery out forcefully.

Answer

Heat the battery with a heat gun to soften the adhesive.

Answer

Use a suction cup to pull the battery straight up.

Question 8

A technician is troubleshooting a network where a user's computer cannot obtain an IP address via DHCP. The computer is connected to a switch, and other devices on the same switch work fine. The technician checks the switch and sees that the port is up and the link light is green. What should the technician check next?

Accepted Answer

Check if the switch port is configured with Port Security that is blocking the MAC address.. Since the switch port is up and other devices on the same switch obtain IP addresses correctly, the DHCP server and the general network path are functional. The most likely cause is a Layer 2 security feature, such as Port Security, which can be configured to block unknown or specific MAC addresses, preventing the computer from communicating with the DHCP server even though the physical link is active.

Answer

Replace the Ethernet cable.

Answer

Reboot the DHCP server.

Answer

Set a static IP address on the computer.

Question 9

A technician is configuring a conference room where a laptop must wirelessly display its screen to a 4K projector without using any cables. The projector supports Miracast. What must the technician verify on the laptop?

Accepted Answer

The laptop supports Miracast and Wi-Fi is enabled.. Miracast uses Wi-Fi Direct to establish a peer-to-peer wireless link between devices, so the laptop must support Miracast and have Wi-Fi enabled. It does not require a shared Wi-Fi network or Bluetooth, as Miracast creates its own direct connection for screen mirroring.

Answer

The laptop has Bluetooth enabled.

Answer

The laptop is connected to the same Wi-Fi network as the projector.

Answer

The laptop has an HDMI port.

Question 10

A technician is deploying a fleet of tablets that must connect to a corporate network using 802.1X authentication with certificates. After configuring the Wi-Fi profile, some tablets fail to connect. The technician verifies the SSID and security settings are correct. What is the most likely missing configuration?

Accepted Answer

The tablets are missing the root CA certificate in their trusted store.. 802.1X authentication using EAP-TLS requires the client to validate the server's certificate against a trusted root CA. If the root CA certificate is missing from the tablet's trusted store, the client cannot verify the RADIUS server's identity, causing the EAP-TLS handshake to fail. This is the most likely issue since the SSID and security settings are already confirmed correct.

Answer

The tablets have the wrong date and time set.

Answer

The tablets are using WPA2-Personal instead of WPA2-Enterprise.

Answer

The tablets have a static IP configured that conflicts with the DHCP scope.

Question 11

A technician is troubleshooting a smartwatch that will not sync with a smartphone via Bluetooth. The smartwatch pairs but data syncs only intermittently. The smartphone is an Android device with battery optimization enabled for the companion app. What is the most likely cause?

Accepted Answer

The smartphone's battery optimization is preventing the companion app from running in the background.. Battery optimization on Android (Doze mode) restricts background app activity to conserve power. When the companion app is prevented from running in the background, it cannot maintain the persistent Bluetooth connection needed for continuous data sync, even though the initial pairing succeeds. This explains intermittent sync because the app is periodically killed or throttled by the OS.

Answer

The smartwatch firmware is outdated.

Answer

The Bluetooth radio is experiencing interference from other devices.

Answer

The smartwatch's battery is low.

Question 12

During a network upgrade, a technician needs to allow remote desktop connections to Windows workstations from the internal network. Which port must be opened in the firewall?

Accepted Answer

3389. Remote Desktop Protocol (RDP) uses TCP port 3389 by default. To allow remote desktop connections to Windows workstations from the internal network, the firewall must permit inbound traffic on port 3389. This is the standard port for RDP, which provides graphical remote access to Windows systems.

Answer

22

Answer

23

Answer

5900

Question 13

A technician is setting up a new file server and needs to assign it a static IP address. The network uses a subnet of 192.168.1.0/24, and the router's LAN IP is 192.168.1.1. The technician wants to ensure the server is reachable from all devices on the local network. Which of the following IP addresses should the technician assign to the server?

Accepted Answer

192.168.1.50. (192.168.1.50) is correct because it falls within the usable host range of the 192.168.1.0/24 subnet (192.168.1.1 to 192.168.1.254) and is not reserved for the network address or broadcast address. Assigning this static IP ensures the server is reachable from all devices on the local network, as it is on the same subnet as the router's LAN IP (192.168.1.1).

Answer

192.168.1.0

Answer

192.168.1.255

Answer

192.168.2.1

Question 14

A company is deploying a new branch office in a location where no wired internet is available. They need a reliable connection with moderate speed and low latency for VoIP and video conferencing. Which technology should they consider?

Accepted Answer

Fixed wireless (e.g., point-to-point microwave). Fixed wireless (point-to-point microwave) provides a dedicated, low-latency link ideal for real-time applications like VoIP and video conferencing. Unlike satellite, it avoids the high latency (500-800 ms) caused by geostationary orbits, and unlike cellular, it offers consistent bandwidth without contention from other users in the area.

Answer

Satellite internet

Answer

Cellular 4G/5G hotspot

Answer

Dial-up

Question 15

An IT manager is comparing cable broadband and fiber-optic for a new office. They need the lowest possible latency for real-time financial trading applications. Which connection type should they choose, and why?

Accepted Answer

Fiber-optic, because it provides lower latency due to the speed of light in glass and dedicated bandwidth. Fiber-optic connections transmit data as light pulses through glass, which travels at approximately 2/3 the speed of light in a vacuum, significantly faster than electrical signals in copper. Additionally, fiber provides dedicated bandwidth per user, eliminating the contention and latency spikes common in cable broadband's shared coaxial architecture. This combination of propagation speed and consistent low latency makes fiber the optimal choice for real-time financial trading where microseconds matter.

Answer

Cable broadband, because it uses coaxial cable which is faster than fiber

Answer

Fiber-optic, because it uses light signals and is not subject to electromagnetic interference

Answer

Cable broadband, because it has higher download speeds