220-1201 Practice Test 49 — 15 Questions

Question 1

A technician is setting up a new VoIP phone system. To ensure voice quality, they need to prioritize voice traffic over data traffic on the network. Which QoS configuration method should be implemented?

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

Accepted Answer

Configure DSCP markings on the VoIP traffic. DSCP (Differentiated Services Code Point) markings allow VoIP traffic to be classified and prioritized at Layer 3, ensuring low latency and jitter for voice packets. By marking VoIP packets with a specific DSCP value (e.g., EF for expedited forwarding), routers and switches can apply QoS policies to give voice traffic priority over data traffic. This is the standard method for QoS in VoIP deployments.

Answer

Set the VoIP phones to use a static IP address

Answer

Enable VLAN tagging on the switch ports

Answer

Use a crossover cable between the phone and switch

Question 2

A user reports that when they scan a document using the flatbed scanner on their multifunction printer, the resulting image has a blue tint. The same user says printing works fine. What is the most likely cause?

Accepted Answer

The scanner lamp is failing. This question tests troubleshooting of scanner-specific issues. A blue tint indicates a problem with the scanner's color calibration or sensor, not the printer's output. The print quality is fine, so the issue is isolated to the scanning subsystem.

Answer

The toner cartridge is low on cyan

Answer

The document is placed upside down

Answer

The printer driver is corrupted

Question 3

A user's laptop intermittently loses connection to the wireless network. The technician suspects channel congestion from nearby access points. Which tool should be used to identify the least congested Wi-Fi channel?

Accepted Answer

Wi-Fi analyzer. A Wi-Fi analyzer (option C) is the correct tool because it scans the 2.4 GHz and 5 GHz bands, displaying channel utilization, signal strength, and overlapping access points. This allows the technician to identify the least congested channel by visualizing real-time interference and channel overlap, which is essential for resolving intermittent wireless disconnections caused by channel congestion.

Answer

Ping

Answer

Tracert

Answer

Cable tester

Question 4

A technician is troubleshooting a network where two computers cannot communicate. Computer A has an IP of 192.168.1.10 with subnet mask 255.255.255.0. Computer B has an IP of 192.168.2.20 with subnet mask 255.255.255.0. Both are connected to the same switch. The switch is not configured with VLANs. Why can't the computers communicate?

Accepted Answer

The computers are on different subnets and need a router to communicate.. Computer A (192.168.1.10/24) and Computer B (192.168.2.20/24) are on different subnets because their subnet masks (255.255.255.0) define network IDs of 192.168.1.0 and 192.168.2.0 respectively. A switch operates at Layer 2 and forwards frames based on MAC addresses within the same broadcast domain, but it cannot route traffic between different subnets. For inter-subnet communication, a Layer 3 device such as a router (or a Layer 3 switch) is required to perform routing.

Answer

The switch is blocking the traffic due to MAC address filtering.

Answer

The subnet mask on Computer B is incorrect.

Answer

The default gateway on both computers is not set.

Question 5

You are troubleshooting a network issue where a user cannot access a specific server. You need to verify the path that packets take from the user's computer to the server and identify where delays occur. Which command-line tool should you use?

Accepted Answer

tracert. The tracert (traceroute) command is specifically designed to map the path packets take from a source to a destination by sending ICMP Echo Requests with incrementing Time-To-Live (TTL) values. Each router along the path decrements the TTL and, when it reaches zero, sends back an ICMP Time Exceeded message, allowing tracert to display each hop and the round-trip time (RTT) for that hop. This makes it the correct tool for verifying the packet path and identifying where delays occur.

Answer

ping

Answer

ipconfig

Answer

nslookup

Question 6

During a network upgrade, a technician needs to ensure that all devices on a small office LAN receive IP addresses automatically from a central server. Which protocol must be running on that server?

Accepted Answer

DHCP. The Dynamic Host Configuration Protocol (DHCP) is the correct answer because it is specifically designed to automatically assign IP addresses, subnet masks, default gateways, and other network configuration parameters to devices on a LAN. A DHCP server listens on UDP port 67 and responds to client requests on UDP port 68, enabling zero-touch IP configuration for all devices on the network.

Answer

DNS

Answer

HTTP

Answer

FTP

Question 7

A user reports that after installing a new app on their Android phone, the device has become noticeably slower and the battery drains faster. What is the most likely cause?

Accepted Answer

The app is running background services that consume resources.. The most common cause of performance degradation and increased battery drain after installing a new app is that the app runs background services, such as sync adapters, location listeners, or push notification keep-alives. These services consume CPU cycles, memory, and network activity even when the app is not in the foreground, leading to slower device responsiveness and faster battery depletion.

Answer

The app is a known malware that steals personal data.

Answer

The phone's storage is full from the app installation.

Answer

The app requires a newer version of Android.

Question 8

A user connects a 4K monitor to their laptop using a USB-C port. The monitor is detected, but the resolution is stuck at 1920x1080. The laptop supports 4K output via USB-C. What is the most likely reason?

Accepted Answer

The USB-C cable does not support DisplayPort Alt Mode. The most likely reason is that the USB-C cable does not support DisplayPort Alt Mode. For a USB-C port to output a 4K video signal, the cable must be capable of carrying DisplayPort signals alongside USB data. If the cable is a standard USB 2.0 or 3.x cable without Alt Mode support, the system will fall back to a lower resolution like 1920×1080, even if the laptop and monitor both support 4K.

Answer

The monitor's HDMI port is defective

Answer

The laptop's graphics driver is outdated

Answer

The monitor's refresh rate is set too high

Question 9

A technician is replacing the toner cartridge in a laser printer. After installing the new cartridge, the printer displays an error message that the toner cartridge is not recognized. The technician has verified that the cartridge is compatible with the printer model. What is the most likely cause?

Accepted Answer

The cartridge's chip is not making contact with the printer.. Laser printer cartridges have a chip that communicates with the printer. If the chip is not making contact, the printer cannot recognize the cartridge. This is often due to a protective seal or tape left on the cartridge, or improper seating. A firmware issue is less likely if the cartridge is compatible.

Answer

The printer's firmware is outdated.

Answer

The toner is low in the new cartridge.

Answer

The printer needs to be reset to factory defaults.

Question 10

A user reports that their new high-resolution monitor (2560x1440) connected via DisplayPort shows intermittent black screens for a few seconds. The monitor works fine at lower resolutions. What is the most likely issue?

Accepted Answer

The DisplayPort cable is not certified for the required bandwidth. The most likely issue is that the DisplayPort cable is not certified for the required bandwidth. At 2560x1440 resolution, the monitor requires a high data rate (approximately 7.04 Gbps for 60 Hz), and a non-certified or low-quality cable may not reliably support this bandwidth, causing intermittent signal loss and black screens. Lower resolutions work because they require less bandwidth, allowing the cable to function within its limits.

Answer

The monitor's power saving mode is too aggressive

Answer

The graphics card is overheating

Answer

The monitor's firmware is outdated

Question 11

A user complains that their laptop's Wi-Fi connection drops frequently when a Bluetooth mouse is active. The laptop is a recent model with built-in Wi-Fi and Bluetooth. What is the most likely cause?

Accepted Answer

Interference between Bluetooth and Wi-Fi on the 2.4 GHz band.. The most likely cause is interference between Bluetooth and Wi-Fi on the 2.4 GHz band. Both Bluetooth and Wi-Fi (802.11b/g/n) share the same 2.4 GHz ISM band, and Bluetooth uses adaptive frequency hopping (AFH) to avoid collisions, but when a Bluetooth device is active, it can still cause co-channel interference with Wi-Fi, leading to dropped connections. This is a well-known issue, especially with older or poorly shielded hardware.

Answer

The Bluetooth mouse is out of range.

Answer

The laptop's Wi-Fi driver is outdated.

Answer

The Bluetooth mouse uses a proprietary frequency.

Question 12

A technician is setting up a dual-monitor workstation for a financial analyst. The PC has one HDMI port and one DisplayPort. The monitors have HDMI and DVI inputs, respectively. Which cable combination will provide the most straightforward and reliable connection for both monitors?

Accepted Answer

HDMI to HDMI and DisplayPort to DVI (with adapter). The best choice is to connect each monitor to the port that matches its native input. Using an HDMI-to-HDMI cable for the HDMI monitor and a DisplayPort-to-DVI adapter/cable for the DVI monitor ensures a direct, reliable connection without unnecessary signal conversions. Option A would require an HDMI-to-DVI cable from the HDMI port to the DVI monitor and a DisplayPort-to-HDMI cable from the DisplayPort to the HDMI monitor. While technically functional, this swaps the native connections and may introduce compatibility issues or require additional active adapters, making it less straightforward.

Answer

HDMI to DVI and DisplayPort to HDMI

Answer

Two HDMI cables, using a splitter

Answer

DisplayPort to HDMI and VGA to DVI

Question 13

A company deploys a new web server and wants to ensure that data transmitted between clients and the server is encrypted. The technician configures the server to use a certificate. Which protocol should be enabled on the server?

Accepted Answer

HTTPS. HTTPS (Hypertext Transfer Protocol Secure) encrypts data between clients and a web server using TLS/SSL. The certificate you configured on the server is used to establish a trusted, encrypted session, ensuring confidentiality and integrity of transmitted data.

Answer

HTTP

Answer

FTP

Answer

SSH

Question 14

A user's laptop has a USB-C port that supports Thunderbolt 3. They want to connect two 4K monitors daisy-chained. The monitors have DisplayPort inputs. Which cable configuration is required?

Accepted Answer

Use a USB-C to DisplayPort cable from the laptop to the first monitor, then a DisplayPort cable from the first monitor to the second.. Thunderbolt 3 over USB-C supports DisplayPort daisy-chaining (Multi-Stream Transport, MST). A USB-C to DisplayPort cable from the laptop to the first monitor carries the video signal, and a standard DisplayPort cable from the first monitor's DisplayPort out to the second monitor's DisplayPort in completes the chain. This configuration leverages the MST capability inherent in Thunderbolt 3 and DisplayPort 1.2 or later, allowing two 4K monitors to be driven from a single port.

Answer

Connect both monitors directly to the laptop using two separate USB-C to HDMI cables.

Answer

Use a USB-C hub with two HDMI ports.

Answer

Use a single USB-C to DisplayPort cable that splits into two DisplayPort connectors.

Question 15

A user wants to use a portable SSD with their tablet for video editing. The tablet has a USB-C port that supports USB 3.1 Gen 2. They need to transfer large files quickly and also charge the tablet simultaneously. Which accessory should they use?

Accepted Answer

A USB-C hub with power delivery pass-through. A USB-C hub with power delivery (PD) pass-through is the correct accessory because it allows the tablet to simultaneously charge via the hub's PD input while providing a dedicated USB-C data port for the portable SSD. USB 3.1 Gen 2 supports up to 10 Gbps, which is sufficient for fast video file transfers, and PD pass-through ensures the tablet's battery is replenished during use. Without PD pass-through, a standard hub would split power and data, potentially starving the tablet of charge.

Answer

A USB-C to USB-C cable

Answer

A USB-C to USB-A adapter

Answer

A wireless SSD with Bluetooth 5.0