Free RAM and System Memory practice questions
10 free 220-1201 questions on RAM and System Memory, each with a full explanation — no account needed. This section sits in the Hardware part of the exam. Answer every question to see your score, then read the lessons below for anything you missed.
A technician orders 16 GB of DDR4 memory for a laptop upgrade. The module arrives and matches the advertised speed and capacity, but it is physically too long to fit into the system. Which factor was overlooked when selecting the RAM?
Even when DDR generation and capacity are correct, the RAM must match the physical form factor of the system. Laptops require SODIMM modules, which are shorter than desktop DIMMs and will not physically fit in laptop slots.
A technician attempts to install laptop RAM into a desktop motherboard by pressing harder when it does not fit. What is the primary risk of this action?
RAM is keyed to prevent incorrect installation. Forcing a module that does not align can crack the PCB or damage the memory slot, turning a compatibility issue into hardware failure.
A technician needs to upgrade RAM in an ultra-thin laptop but finds no removable memory slots. What conclusion should be documented?
Many ultra-thin laptops use soldered RAM to save space. When no SODIMM slots are present, the memory cannot be upgraded, and this hardware limitation must be communicated clearly.
A desktop motherboard has four long memory slots with retention clips at both ends. The system currently uses one installed module. Which RAM form factor is required for an upgrade?
Full-length slots with end retention clips indicate standard desktop memory slots. These are designed for DIMMs, not the shorter SODIMM modules used in laptops.
A laptop has 8 GB of soldered memory and one empty SODIMM slot. The vendor lists 16 GB as the maximum total and publishes a list of tested 8 GB modules. A technician installs a 16 GB DDR4 SODIMM of the correct speed; the laptop powers on, the fans spin, but the screen stays black and it beeps repeatedly. Which explanation is MOST likely?
A laptop with soldered RAM has a memory controller validated only for certain module capacities, chip densities, and ranks; a 16 GB module built from higher-density chips than the controller understands is not trained at POST, and the board halts with a memory beep code even though the DDR generation and speed are correct. Soldered memory does not disable the slot (the two normally run together, often in dual-channel), so that option is wrong. SODIMMs are never required in pairs; a single module works in single-channel mode. Every DDR4 SODIMM runs at the standard 1.2 V, so a voltage mismatch with the soldered chips is not possible. The fix is to use a module from the vendor's tested list, typically 8 GB.
A desktop system powers on but displays a black screen after a RAM upgrade. The motherboard manual lists support for the installed DDR generation and capacity. What is the most likely physical cause?
Improperly seated RAM is one of the most common causes of no-boot or black-screen conditions after upgrades. Reseating the DIMM until the retention clips fully engage often resolves the issue.
A small form factor PC uses laptop-style memory modules installed at an angle and locked down with side clips. Which RAM form factor does this system use?
SODIMM modules are designed for laptops and compact systems. They are shorter than DIMMs and typically install at an angle before being pressed flat and secured by side retention clips.
A technician installs new RAM into a desktop, but the system reports only half of the installed memory. Both modules are the same capacity and DDR generation. What is the best next step?
When memory is underreported, the first step is to reseat the modules and test them individually. This isolates seating issues, bad sticks, or faulty slots before assuming a compatibility limitation.
Two RAM modules are both labeled DDR4 and fit physically into a desktop motherboard, but the system becomes unstable after installation. Which factor should be checked next?
Even when form factor and DDR generation match, a motherboard has chipset- and firmware-level limits on supported module density, ranks, speeds, and combinations, so the next check is the vendor's qualified memory list (QVL) and supported memory specifications; instability with otherwise correct modules is a classic unsupported-combination symptom. The CPU socket and cooler mounting have nothing to do with memory training. A graphics driver or GPU firmware cannot destabilize the memory bus. The operating system edition may cap how much RAM is usable, but it would report less memory, not cause instability.
A technician attempts to install DDR4 memory into a motherboard designed for DDR5. The module appears to be the same length and has the same pin count, but it will not seat in the slot. What is the most accurate explanation?
Even though DDR4 and DDR5 desktop DIMMs share the same pin count, they are keyed differently. The notch position and electrical signaling prevent DDR4 from fitting into a DDR5 slot, making them physically incompatible.
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Every lesson that covers RAM and System Memory on the 220-1201 exam.