COMPTIA A+ Practice Exam

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Ace your COMPTIA A+ certification with our practice exam. Engage with a variety of questions including multiple choice and performance-based, complete with hints and detailed explanations. Prepare effectively and boost your confidence for the big day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the sector size commonly used?

4.5 MB/sec
36 MB/sec
512 Bytes
54MB/sec

The correct answer is: 512 Bytes

The common sector size used in storage devices, such as hard drives and SSDs, is 512 bytes. This standard sector size has been used for many years and is fundamental for data storage architecture. In storage, data is organized into sectors, which are the smallest physical storage units that the device can read or write. The use of 512-byte sectors allows for efficient data management and retrieval. While newer technologies may utilize larger sector sizes, such as 4K (4096 bytes), the 512-byte sector remains prevalent and widely recognized across many systems and formats, especially in traditional hard disk drives. The other figures mentioned do not represent typical sector sizes but rather could refer to different performance measures or specifications related to data transfer rates, which are not the same as sector sizes. Thus, the answer correctly identifies the standard sector size in common usage.