Menu

Information

Updated version of the classic Subnetting Practice question generator by Practical Networking.

Feedback? Mention it on my Discord server: pracnet.net/discord.

Instructions:

Each time you click "Next Problem" (or reload the page) a random IP address and CIDR value is generated.

You are then tasked to solve the Network ID, Broadcast IP, First Host IP, Last Host IP, and Next Network addresses for the target IP.

Options:

  • Auto‑fill non‑interesting octets pre-fills the octets that aren’t part of the subnet calculation. For example: with a /24, the first three octets are filled in each answer row.
  • Auto‑check automatically checks a row once all four octets are entered.

Potplayer Show Milliseconds: Exclusive

: Identifying precise cut points before importing footage into an editor.

Find the dropdown menu (usually under "OSD items").

Using the OSD is the most reliable method for constant monitoring of precise timestamps. potplayer show milliseconds

: Right-click anywhere in the PotPlayer window and select Preferences , or simply press F5 .

If you don't want a permanent overlay and only need a quick check of the exact timestamp: : Identifying precise cut points before importing footage

: Click Apply or OK to see the changes on your video screen. Quick Shortcut for Instant Milliseconds

: Sports or technical analysis where every fraction of a second contains vital visual data. : Right-click anywhere in the PotPlayer window and

Select an option like or a format similar to HH:MM:SS.ms .

To show milliseconds in PotPlayer , you can use the built-in settings to overlay a high-precision clock on your video. While many players require external plugins for this, PotPlayer offers a native way to view precise time data down to the millisecond. How to Enable Milliseconds via OSD

: Finding the exact millisecond where a line of dialogue begins to fix timing offsets.