Test connection stability during a backup before an exam

Your backup starts syncing, and suddenly video calls freeze or websites take longer to respond. If you have a remote exam coming up, it helps to know whether the backup is causing a real connection problem or the slowdown is just a coincidence.

Use the Connection Stability test to compare response time, jitter, lost requests, and dropouts with the backup idle and active. It measures how your connection responds to the test, not the exam platform itself, but the comparison can show whether backup traffic is affecting the network.

Compare your connection with and without the backup

1. Open the Connection Stability test while the backup is paused or idle. Run it for a few minutes and note the response time, jitter, lost requests, and any dropouts.
2. Start the backup and wait until it is actively transferring data. A backup that is only scanning files may not be using much network capacity yet.
3. Run the test again while the transfer continues. Keep the computer in the same place and avoid starting unrelated downloads, video streams, or large uploads.
4. Compare the two runs. If the backup pauses or completes, note that too, since network use can change as a backup moves through different stages.

If the backup runs on another device, leave it running and test from the computer you will use for the exam. That shows how the shared network behaves from your exam device. Avoid changing Wi-Fi bands or moving the router between the two runs, because that makes the comparison less useful.

What the results mean

Response time rises while the backup runs

Response time is how long a test request takes to get a reply. A higher result during the backup means the connection is taking longer to respond under that load. A small change may not matter, but a large or repeated increase could make an interactive exam feel sluggish.

Jitter rises or varies more

Jitter is the amount that response time changes from one request to another. A steady connection can have some delay and still feel usable. Unpredictable delay is more noticeable in live audio, video, and remote desktop controls because timing keeps shifting.

Lost requests or dropouts appear during the backup

These indicate that some test requests did not get a timely reply or the connection briefly stopped responding. If they appear only during backup activity and repeat on another run, the load is a likely contributor. A lost test request does not prove that an exam session will disconnect, since the exam uses its own servers and connection methods.

The two runs look similar

The backup may not be causing a meaningful connection change at the time you tested. It could be using little bandwidth, or your network may have enough capacity for both tasks. If the exam problem happens at a particular time, repeat the comparison during the same kind of backup activity and at a similar time of day.

How to reduce backup-related connection problems

1. Schedule the backup outside exam time. If the backup is not urgent, let it finish before the exam or resume afterward. Pause automatic sync only if you know how to restart it and will not lose work.
2. Limit backup traffic if the app allows it. Look for a bandwidth limit, upload limit, or schedule in the backup software. Reduce the transfer rate and repeat the connection test while the backup runs. Some services transfer in both directions, so check whether the limit applies to uploads, downloads, or both.
3. Use a wired connection when possible. Connect the exam computer to the router with Ethernet. If you must use Wi-Fi, sit closer to the router and avoid placing it behind a TV, inside a cabinet, or next to other wireless equipment. On Windows 11, check Settings › Network & internet. On macOS, check System Settings › Network › Wi-Fi.
4. Reduce other network activity. Pause large file transfers, game downloads, video streams, and cloud photo uploads on other devices. Ask other people on the network to avoid heavy uploads during the exam.
5. Restart network equipment if the problem persists. If the connection remains unstable even with backup traffic paused, restart the router and modem using their normal power procedure, then test again. Contact your internet provider if dropouts continue across multiple devices.

What this test can and cannot tell you

Connection Stability checks repeated requests between your browser and the test service over a few minutes. It can reveal a change in response time, jitter, lost requests, or dropouts under load. It cannot measure the exact connection to your exam provider, guarantee that a proctoring app will work, or tell you whether the backup files are complete.

For a fair comparison, use the same computer and network, and run each test long enough to catch recurring changes. A single clean run is useful, but it is not a guarantee that the connection will behave the same way throughout an exam.