Back to Storage Devices and Interfaces

Secure Digital (SD) Cards

5 minutes 5 Questions

SD cards are non-volatile flash memory cards that are most commonly used in portable devices like mobile phones, digital cameras, and tablets. These cards store digital data, providing an easy way to expand storage capacity or transfer data between devices. They come in different sizes, including t…

Test mode:
Start practice test
CompTIA A+ - Secure Digital (SD) Cards Example Questions

Test your knowledge of Secure Digital (SD) Cards

Question 1

A user has purchased an Ultra High Speed SD Card (UHS-II). They encounter compatibility issues with their device. What is the probable cause?

Correct Answer: Device does not support UHS-II

The most probable cause of compatibility issues when using a UHS-II SD card is that the device does not support the UHS-II standard. UHS-II is a newer, faster standard compared to the original UHS-I. If the device is designed to only support UHS-I or older standards, it will not be able to take advantage of the increased speed offered by UHS-II cards and may not function properly. The other answers are less likely because: physical damage to the card would likely prevent it from working at all, SDXC compatibility is a separate issue from UHS standards, and the question specifies an SD card rather than a microSD card.

Question 2

A user is experiencing slow transfer speeds on their SD card. What could be causing the issue?

Correct Answer: Low class rating

The most likely cause of slow transfer speeds on an SD card is a low class rating. SD card class ratings indicate the minimum write speed of the card, with higher class ratings supporting faster speeds. For example, a Class 2 card has a minimum write speed of 2 MB/s, while a Class 10 card supports at least 10 MB/s. Using an SD card with a low class rating can result in slow data transfers, especially when writing large files like high-resolution photos or videos. The other factors mentioned, such as excessive power consumption, physical storage capacity damage, or the write protection switch being engaged, would not typically cause slow transfer speeds but rather complete failure to read or write data to the card.

Question 3

A user is asked to transfer photos to a friend's SD card, but they cannot access the card. Which factor may have caused this problem?

Correct Answer: Friend's card has file system incompatibility

The most likely reason the user cannot access the friend's SD card is due to file system incompatibility. Different devices and operating systems may use various file systems like FAT32, exFAT, or NTFS. If the SD card is formatted with a file system that the user's device does not support, it will be inaccessible. The card being full or the photos being too large would not prevent access to the card itself. Physical damage could cause access issues, but file system incompatibility is a more common cause when transferring files between devices.

More Secure Digital (SD) Cards questions
15 questions (total)
Start 15 question test