Which of the following types of RAM is most likely used in data centers and in high-performance machines?
A. ЕСС
B. Single-channel
C. Unbuffered
D. RDIMM
Show Answer
Correct Answer: D
Explanation: Registered DIMMs (RDIMMs) are the memory modules most commonly used in servers, data centers, and high-performance systems because their register/buffer improves signal integrity and supports higher memory capacities. ECC is an error-correction feature rather than a DIMM type, and while RDIMMs often include ECC, the question asks for the type of RAM most likely used in these environments.
Question 22
A consultant is assessing the wireless configurations for a small office. The existing equipment uses WEP encryption and operates on the default channel. The office is in a crowded urban area with many nearby networks. Which of the following is the best way to improve the wireless network performance?
A. Replacing the access point
B. Disabling SSID broadcasting
C. Enabling MAC address filtering
D. Updating the firmware
Show Answer
Correct Answer: A
Explanation: Among the given options, replacing the access point is the only choice that can directly improve wireless performance in a crowded environment, especially if it enables newer Wi-Fi standards, better radio performance, and improved channel management. Disabling SSID broadcast and enabling MAC filtering are security/administrative measures that do not improve performance, and firmware updates may help stability or fix bugs but are not the best answer for congestion-related performance.
Sources:
https://www.trai.gov.in/sites/default/files/2026-04/CP_27042026.pdf
Question 23
Following a power outage, a laptop will not turn on. Which of the following should a technician replace first to resolve the issue?
A. The AC adapter
B. The RAM
C. The inverter
D. The battery
Show Answer
Correct Answer: A
Explanation: After a power outage, the first component to check and replace among these options is the AC adapter, as power surges or outages can damage the external power supply and prevent the laptop from turning on. RAM would typically cause POST issues rather than complete loss of power, an inverter only applies to older LCD backlights, and a failed battery alone should not prevent startup when a working AC adapter is connected.
Question 24
A user ran out of USB ports on their laptop but would like to plug in more devices. Which of the following technologies is the best for them to use?
A. Near-field communication
B. Bluetooth
C. USB receiver
D. Port replicator
Show Answer
Correct Answer: D
Explanation: A port replicator (or docking station) expands the available ports on a laptop, including additional USB ports, allowing more USB devices to be connected through a single laptop connection. NFC and Bluetooth are wireless communication technologies and do not add USB ports. A USB receiver is a dongle for specific wireless peripherals, not a way to increase the number of USB ports.
Question 25
A user reports that they cannot get their laptop to work with a video projector connected with an HDMI cable. The projector is turned on, the HDMI cable is securely connected on both ends, and the laptop displays properly on its own screen. The display mode is set to "Duplicate" on the laptop. Which of the following is most likely causing the issue?
A. The projector does not support HDMI connections.
B. The laptop display mode should be set to "Extend".
C. An HDMI port on the projector failed.
D. The input source is incorrect on the projector.
Show Answer
Correct Answer: D
Explanation: The most likely cause is that the projector is set to the wrong input source. The cable is connected, the projector is powered on, and the laptop is already configured to duplicate its display. A projector on a different input (such as VGA or another HDMI port) will not show the laptop's output even though the connection is otherwise correct. The other options are less likely based on the information provided.
Question 26
A technician is configuring a laptop that will be used in different locations. Which of the following IP configurations is the most appropriate?
A. DHCP reservation
B. APIPA
C. Static
D. Dynamic
Show Answer
Correct Answer: D
Explanation: A laptop used in different locations should use a dynamic IP configuration via DHCP so it can automatically obtain appropriate network settings on each network it joins. Static addressing is unsuitable for changing networks, APIPA is only a fallback when DHCP is unavailable, and a DHCP reservation is tied to a specific network.
Question 27
A technician is configuring a new office network for a customer. Which of the following subnets should the technician use for the local network?
A. 52.84.52.0/25
B. 85.159.80.0/26
C. 172.31.88.0/24
D. 195.205.143.160/27
Show Answer
Correct Answer: C
Explanation: For a local office network, use an RFC 1918 private IP subnet. The private IPv4 ranges are 10.0.0.0/8, 172.16.0.0/12 (172.16.0.0–172.31.255.255), and 192.168.0.0/16. Among the options, 172.31.88.0/24 falls within the private 172.16.0.0/12 range. The other subnets are public address space.
Question 28
A customer reports that the output from their thermal receipt printer has vertical white lines. Which of the following would most likely resolve this issue?
A. Replacing the ink cartridge
B. Using the correct paper type
C. Installing a maintenance kit
D. Cleaning the heating element
Show Answer
Correct Answer: D
Explanation: Vertical white lines on a thermal receipt printer are commonly caused by contamination or damage on the thermal printhead. Cleaning the heating element (thermal printhead) often restores proper heat transfer and eliminates missing vertical lines. Thermal printers do not use ink cartridges, the paper type is less likely to cause consistent vertical white lines, and a maintenance kit is not the most direct fix for this symptom.
Question 29
While using a laptop and Bluetooth headset for conference calls, a user notices intermittent sound issues. The user frequently walks between office rooms during the calls, leaving the laptop in place. The office wireless network uses fiber for internet access and consists of two wireless APs that are connected. Which of the following is most likely causing the connectivity issue?
A. The number of available APs is inadequate.
B. The user is moving in and out of range.
C. The APs are not in mesh mode.
D. The internet connection is too slow to support conference calls.
Show Answer
Correct Answer: B
Explanation: A Bluetooth headset connects directly to the laptop, not to the Wi-Fi access points. As the user walks away from the stationary laptop, the Bluetooth link can move out of effective range or experience attenuation through walls, causing intermittent audio. The number of APs, mesh mode, and fiber internet speed are not the most likely cause of the Bluetooth audio issue.
Question 30
A human resources manager printed a sensitive employee termination announcement and forgot to retrieve the document from the printer. Which of the following is a way to avoid this situation?
A. Badging
B. Duplex
C. Printer share
D. Wireless encryption
Show Answer
Correct Answer: A
Explanation: Badging (also called secure print or pull printing) requires the user to authenticate at the printer before the document is released, preventing sensitive documents from being left unattended in the output tray. Duplex only controls double-sided printing, printer sharing controls access to a printer, and wireless encryption protects network communication rather than printed output.
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