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 lane speed of PCIe v2.x x1?

100 MB/s
250 MB/s
500 MB/s
985 MB/s

The correct answer is: 500 MB/s

The lane speed of PCIe v2.x x1 is actually 500 MB/s. PCI Express version 2.0 doubled the speed of its predecessor, with each lane capable of transmitting data at a rate of 5 GT/s (gigatransfers per second). In terms of bandwidth, this translates to an effective throughput of 500 MB/s per lane, which is achieved after accounting for overhead. This means that a single lane in PCIe v2.x is equipped to handle a substantial amount of data transfer, making it appropriate for a variety of devices and applications that require reliable and fast communication. Understanding these specifications is crucial for anyone working with systems that utilize PCIe, whether for upgrading hardware or optimizing performance.