User talk:103.49.206.196

Hello, I'm Zac67. I wanted to let you know that one or more of your recent contributions&#32;to Fiber-optic communication have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks. --Zac67 (talk) 17:11, 12 February 2021 (UTC)

February 2021
Please refrain from making unconstructive edits to Wikipedia, as you did with this edit to Communication. Your edits appear to be vandalism and have been reverted or removed. If you would like to experiment, please use the sandbox. Repeated vandalism can result in the loss of editing privileges. Thank you. Blablubbs | talk 00:26, 15 February 2021 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.