Q.___________ is a network tool used to test the download and upload broadband speed.

Concept: Network diagnostic and performance measurement tools

Internet Service Providers and users need to verify whether the actual bandwidth delivered matches the subscribed plan. A speed test tool measures this by:

1. Connecting to a nearby test server
2. Downloading a sample file to measure download speed (in Mbps)
3. Uploading data to measure upload speed
4. Reporting latency (ping) and sometimes jitter …

Why we need speed testing tools

Your internet service provider advertises a certain bandwidth — say, 100 Mbps download and 20 Mbps upload. But the actual throughput you experience depends on network congestion, routing efficiency, server load, and the quality of your connection. A speed test tool gives you empirical measurements of what your connection can actually deliver right now.

The principle is straightforward: the tool connects to a nearby server, downloads a chunk of data while timing the transfer, then uploads data the same way. From the amount of data and the time taken, it calculates throughput in megabits per second (Mbps).

Common speed test tools

1. Speedtest by Ookla — the most widely recognized tool, available as a web app, mobile app, and command-line utility. It automatically selects a nearby server and reports download speed, upload speed, and ping (latency).

2. Fast.com — Netflix's speed test, designed to measure the speed you'd get when streaming video. It focuses on download speed first, with upload as an optional secondary test.

3. Google speed test — type "speed test" into Google Search and it offers a built-in test powered by Measurement Lab (M-Lab).

4. ISP-provided tools — many internet providers offer their own speed test portals, though these may be optimized to show favorable results.

What the metrics mean