220-1201 Practice Test 9 — 10 Questions

Question 1

A user reports that their Android tablet's screen flickers when using a specific video streaming app, but the screen is stable in other apps and on the home screen. What hardware component is most likely at fault?

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

Accepted Answer

The video streaming app has a software bug or codec issue.. The screen flickers only within a specific video streaming app, while the home screen and other apps remain stable. This strongly indicates the issue is isolated to software, specifically a bug or codec incompatibility within that app, rather than a hardware failure affecting the entire display or GPU.

Answer

The tablet's display panel is failing.

Answer

The GPU (Graphics Processing Unit) is overheating.

Answer

The tablet's battery is swollen and pressing on the display.

Question 2

A technician is troubleshooting a DSL connection that keeps disconnecting. The modem shows the DSL light blinking. After checking the phone line, they find a filter is missing on a nearby phone handset. How does this cause the issue?

Accepted Answer

The missing filter allows voice frequencies to interfere with DSL frequencies. DSL operates at frequencies above the voice band (typically 25 kHz to 1.1 MHz for ADSL), while analog phone handsets use the 0–4 kHz range. A missing filter (microfilter) allows the phone handset's impedance changes and noise from voice-band signals to reflect onto the DSL line, causing crosstalk and signal-to-noise ratio degradation. This interference triggers frequent retrains and disconnections, visible as a blinking DSL light.

Answer

The phone handset draws too much power from the line

Answer

The filter is needed to amplify the DSL signal

Answer

The phone handset creates a short circuit without the filter

Question 3

A company wants to allow employees to securely access the corporate network from home using their laptops. Which network service should be deployed to provide encrypted remote access?

Accepted Answer

VPN. C is correct because a Virtual Private Network (VPN) creates an encrypted tunnel between the employee's laptop and the corporate network, typically using protocols such as IPsec or TLS. This ensures that all data transmitted over the public internet is confidential and integrity-protected, meeting the requirement for secure remote access.

Answer

DHCP

Answer

DNS

Answer

Port forwarding

Question 4

A user complains that their laptop frequently disconnects from the Wi-Fi when they move to the conference room, which is 50 feet from the access point through two walls. The network uses 5 GHz. What is the MOST likely cause of the disconnects?

Accepted Answer

5 GHz signals have poor penetration through walls.. The 5 GHz band offers higher data rates and less interference than 2.4 GHz, but it has significantly poorer wall penetration due to its shorter wavelength. At 50 feet through two walls, the signal attenuation is severe enough to cause frequent disconnects, especially if the walls contain dense materials like concrete or metal studs.

Answer

The access point is overloaded with too many clients.

Answer

The laptop's power management settings are turning off the Wi-Fi adapter.

Answer

The conference room has a metal door that blocks the signal.

Question 5

A server administrator reports that a critical server is unreachable from the network. The technician can ping the server's IP address from the local subnet but not from a remote subnet. Which command-line tool should be used to identify where packets are being dropped along the path?

Accepted Answer

tracert. B is correct because `tracert` (or `traceroute` on Linux) uses ICMP Time Exceeded messages to map each hop along the path from source to destination. When a server is reachable locally but not from a remote subnet, `tracert` can pinpoint exactly which router is dropping packets, revealing a routing or firewall issue at that hop.

Answer

ping -t

Answer

netstat -r

Answer

pathping

Question 6

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 7

A company deploys a load balancer to distribute traffic across three web servers. Users report that they occasionally see outdated content or are asked to log in repeatedly. Which network service configuration is most likely missing to maintain session persistence?

Accepted Answer

Session persistence (sticky sessions). Session persistence (sticky sessions) ensures that all requests from a given user session are directed to the same backend web server. Without it, the load balancer may distribute requests across different servers, causing the user to see outdated content if one server has stale cached data, or to be asked to log in repeatedly if the session state is stored locally on each server rather than in a shared database.

Answer

DNS round-robin

Answer

DHCP reservation

Answer

Port forwarding

Question 8

A user reports that their VoIP phone works but the PC connected to the phone's passthrough port has no network access. What should the technician check first?

Accepted Answer

The Ethernet cable between the phone and the PC.. This question tests understanding of VoIP passthrough ports. The PC's lack of connectivity is often due to a faulty or unseated Ethernet cable between the phone and PC. The phone itself is working, so the upstream connection is fine.

Answer

The PC's IP configuration.

Answer

The VoIP phone's firmware version.

Answer

The switch port the phone is connected to.

Question 9

A technician is asked to run a new network cable from a patch panel to a cubicle 80 meters away. The cable must support at least 1 Gbps. The technician has Cat6 cable on hand. What is the maximum distance this cable will support for 1 Gbps?

Accepted Answer

100 meters. Cat6 cable is rated to support 1 Gbps Ethernet (1000BASE-T) up to a maximum distance of 100 meters per the TIA/EIA-568 standard. Since the required distance is 80 meters, which is within this limit, the cable will support 1 Gbps. The 100-meter limit includes the combined length of the horizontal cable from the patch panel to the cubicle, plus any patch cords at both ends.

Answer

55 meters

Answer

150 meters

Answer

200 meters

Question 10

A customer reports that their new rural cabin has no cable TV or phone line, but they need a reliable internet connection for remote work. Which connection type would provide the most consistent service without requiring a wired infrastructure?

Accepted Answer

Satellite. Satellite internet is the correct choice because it provides connectivity without any wired infrastructure, relying on a dish communicating with an orbiting satellite. This makes it ideal for remote rural cabins where cable, DSL, or fiber are unavailable, and it offers consistent service independent of terrestrial wiring.

Answer

DSL

Answer

Cable broadband

Answer

Cellular (4G/5G)