220-1201 Practice Test 26 — 15 Questions

Question 1

A customer complains that their iOS device's calendar app no longer syncs with their work Exchange account after a recent iOS update. Other email and contacts sync correctly. What is the most likely cause?

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

Accepted Answer

The calendar app needs to be re-authorized for the Exchange account.. This scenario focuses on app-specific sync issues after an OS update. The most common cause is that the app's permissions or account settings were reset during the update, requiring re-authorization or re-configuration of the Exchange account within the calendar app.

Answer

The Exchange server is down.

Answer

The iOS update removed the Exchange account from the device.

Answer

The calendar app is corrupted and must be reinstalled.

Question 2

A technician is upgrading a workstation from a 500 GB HDD to a 1 TB SSD. After installing the SSD, the system boots into the old OS from the HDD instead of the new SSD. The boot order in UEFI shows only the HDD. What is the most likely reason?

Accepted Answer

The SSD is not partitioned with GPT or lacks an EFI system partition. The SSD may not be initialized with a GPT partition table or may lack an EFI system partition, making it invisible to the UEFI boot manager. The technician should check the partition style and ensure the SSD is properly formatted for UEFI boot. This question tests advanced knowledge of UEFI boot requirements.

Answer

The SSD is not connected to the fastest SATA port

Answer

The HDD has a higher priority in the boot order

Answer

The SSD needs a firmware update

Question 3

A user reports that their computer's clock is consistently off by several minutes, causing authentication failures with the domain. The network uses Active Directory. Which service should be checked first?

Accepted Answer

NTP. NTP (Network Time Protocol) is the correct service to check first because the symptom—a clock consistently off by several minutes causing authentication failures with an Active Directory domain—is a classic sign of time synchronization issues. Active Directory uses Kerberos for authentication, which requires the client and domain controller clocks to be within a default skew of 5 minutes (RFC 4120). If the time is off, Kerberos tickets are rejected, leading to authentication failures.

Answer

DHCP

Answer

DNS

Answer

RADIUS

Question 4

A customer reports that their new laptop cannot connect to the internet at a coffee shop, but their smartphone works fine. The technician checks the laptop's network settings and sees the Wi-Fi adapter is enabled and connected to the correct SSID. Which protocol is most likely not configured correctly on the laptop?

Accepted Answer

DHCP. The laptop is connected to the Wi-Fi network (SSID) and the adapter is enabled, but it cannot access the internet. This indicates the laptop likely failed to obtain an IP address and other network configuration parameters from the coffee shop's router. DHCP (Dynamic Host Configuration Protocol) is responsible for automatically assigning an IP address, subnet mask, default gateway, and DNS server addresses. If DHCP is misconfigured or the laptop's DHCP client is disabled or not functioning, the device will not receive a valid IP address and thus cannot route traffic to the internet, even though the Wi-Fi link is established.

Answer

DNS

Answer

HTTP

Answer

ARP

Question 5

A technician is troubleshooting an issue where a user's computer can access the internet but cannot connect to a network printer by its IP address. The printer is on the same subnet and is powered on. Pinging the printer's IP from the computer fails. Which network service is most likely causing the problem?

Accepted Answer

ARP. Since the computer can access the internet but cannot ping the printer on the same subnet, the issue is at Layer 2 (Data Link) rather than Layer 3 (Network). ARP (Address Resolution Protocol) is responsible for resolving a known IP address to a MAC address on the local subnet. If the ARP cache is corrupted, missing, or the printer fails to respond to ARP requests, the computer cannot build the correct Ethernet frame to reach the printer, causing the ping to fail even though the printer is powered on and on the same subnet.

Answer

DNS

Answer

DHCP

Answer

NAT

Question 6

A user reports that their laser printer is producing pages with a faint, ghost-like image of the previous page printed on the back of the current page. The printer has been in use for three years and has never had its maintenance kit replaced. What is the most likely cause of this issue?

Accepted Answer

The fuser unit is worn out and needs replacement.. This describes a ghosting issue where a previous image appears on the next page, often caused by a worn-out fuser that fails to fully bond toner to the paper. The fuser is part of the maintenance kit, which should be replaced periodically. Other components like the toner cartridge or drum would cause different symptoms.

Answer

The toner cartridge is low on toner.

Answer

The paper is too moist and causing toner to smear.

Answer

The printer driver is outdated and needs updating.

Question 7

A technician is deploying a new network in a warehouse and needs to connect two separate switches that are 120 meters apart. The cable run must support 1 Gbps speeds. Which networking hardware component should be used to ensure reliable connectivity?

Accepted Answer

Install a switch at the 60-meter midpoint and use two Cat6 cables.. A single Cat6 cable is limited to 100 meters for 1 Gbps Ethernet (per TIA/EIA-568 standards). By placing a switch at the 60-meter midpoint, you effectively create two separate 60-meter segments, each well within the 100-meter limit, ensuring reliable 1 Gbps connectivity. The switch regenerates the signal, overcoming the distance limitation without violating the standard.

Answer

Use a single 120-meter Cat6 cable.

Answer

Use a fiber optic cable with media converters on both ends.

Answer

Replace one switch with a hub to increase signal strength.

Question 8

A user reports that their Android phone will not install an app from the Google Play Store. The device has plenty of storage space and a strong internet connection. What is the most likely cause of this issue?

Accepted Answer

The device's operating system version is too old for the app.. The most likely cause is that the device's operating system version is too old for the app. Android apps specify a minimum API level (minSdkVersion) in their manifest; if the device runs an older OS version below that threshold, Google Play Store will block the installation and display an incompatibility message. Since the user has plenty of storage and a strong connection, the OS version is the primary remaining constraint.

Answer

The app is not compatible with the device's screen resolution.

Answer

The Google Play Store app needs to be reinstalled.

Answer

The user is not signed into their Google account.

Question 9

A user reports that their fiber-to-the-home (FTTH) internet connection works but is slower than expected. The technician finds that the ONT (Optical Network Terminal) is connected to the router via a 100-meter Cat5e cable. What is the most likely issue?

Accepted Answer

The Ethernet cable is damaged or has a bad termination.. The most likely issue is a damaged or poorly terminated Cat5e cable. A 100-meter Cat5e cable is within the maximum length specification for 1 Gbps (100 meters), so the length alone is not the problem. However, a damaged cable or bad termination can cause excessive packet loss, CRC errors, or auto-negotiation failures, resulting in slower throughput even though the link appears to be up.

Answer

The ONT is malfunctioning.

Answer

The Cat5e cable is too long for 1 Gbps.

Answer

The router is not configured for the correct speed.

Question 10

A user complains that their laptop frequently disconnects from the Wi-Fi when they move to a different room, but other devices in that room work fine. The technician checks the laptop's wireless adapter settings. Which configuration is most likely causing the issue?

Accepted Answer

Power saving mode is enabled on the wireless adapter. Power saving mode on the wireless adapter reduces power consumption by periodically turning off the radio, which can cause intermittent disconnections when the laptop moves between rooms and the signal strength fluctuates. This is a common issue because the adapter may not maintain a stable connection as it transitions between access points or renegotiates power-saving states.

Answer

The SSID is hidden

Answer

The wireless mode is set to 802.11a only

Answer

The channel width is set to 40 MHz

Question 11

A customer wants to connect a Bluetooth keyboard and mouse to their tablet for a presentation. They ask which accessory is needed to ensure both devices work reliably from across the room. What should you recommend?

Accepted Answer

A Bluetooth extender or repeater to boost signal strength.. Bluetooth range is typically limited to about 10 meters (33 feet) under ideal conditions, and obstacles like walls or furniture can reduce this further. A Bluetooth extender or repeater captures the signal from the tablet and retransmits it, effectively boosting the signal strength and extending the reliable operating distance across a room. This ensures both the keyboard and mouse maintain a stable connection without dropouts.

Answer

A USB-C hub with Bluetooth functionality to extend range.

Answer

A Bluetooth adapter plugged into the tablet's charging port.

Answer

A wireless dongle that connects both keyboard and mouse via a single receiver.

Question 12

A user reports that their smartphone's screen is flickering and has vertical lines. The phone has not been dropped or exposed to water. Which of the following is the most likely cause of this issue?

Accepted Answer

The display cable is loose or damaged. Screen flickering and vertical lines are classic symptoms of a failing display or a loose internal display cable. Since there was no physical trauma, a loose connection or a manufacturing defect in the display assembly is the most probable cause.

Answer

A software glitch caused by a recent app update

Answer

The battery is swelling and pressing against the display

Answer

The phone's processor is overheating

Question 13

A client reports that their 5 GHz Wi-Fi connection works fine near the access point but drops out completely when they move to the next room, which has thick concrete walls. The 2.4 GHz band works throughout the house. Which of the following is the BEST solution?

Accepted Answer

Deploy a mesh Wi-Fi system with nodes in each room.. A mesh Wi-Fi system (Option C) is the best solution because it uses multiple nodes that communicate wirelessly to create a unified network, overcoming signal attenuation caused by thick concrete walls. Unlike a single access point or repeater, mesh nodes are placed in each room to ensure strong 5 GHz coverage by relaying traffic through dedicated backhaul channels, mitigating the high-frequency signal loss that occurs through dense materials.

Answer

Replace the access point with a higher-gain antenna.

Answer

Install a wireless repeater in the next room.

Answer

Switch the client to 2.4 GHz only.

Question 14

A technician is configuring a new wireless network for a small business. The owner wants to ensure that only company-issued laptops can connect, and that data is encrypted. The laptops support WPA2-Enterprise. Which authentication method should be used?

Accepted Answer

802.1X with a RADIUS server. WPA2-Enterprise uses 802.1X authentication, which requires a RADIUS server to validate individual user or device credentials. This allows the business to enforce that only company-issued laptops (which have the correct certificates or credentials) can connect, while also providing strong per-session encryption via dynamic WPA2 keys.

Answer

WPA2-PSK with a strong passphrase

Answer

WPA3-SAE (Simultaneous Authentication of Equals)

Answer

MAC address filtering

Question 15

A network engineer is designing a new data center and needs to connect multiple servers to a core switch with redundant paths. To prevent loops while allowing failover, which networking hardware feature should be implemented?

Accepted Answer

Enable Rapid Spanning Tree Protocol (RSTP) on all switches.. Rapid Spanning Tree Protocol (RSTP) is the correct choice because it provides loop prevention in redundant switch topologies while offering faster convergence than classic STP. In a data center with multiple servers connected to a core switch via redundant paths, RSTP (IEEE 802.1w) ensures that only one active path exists at a time, blocking redundant links to prevent broadcast storms and MAC table instability, yet automatically unblocking them if the primary path fails.

Answer

Enable Link Aggregation Control Protocol (LACP) on the server connections.

Answer

Use a hub instead of a switch for the core connection.

Answer

Configure all switch ports as access ports.