Managing and using network connectivity on a Ubuntu system

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What is an origin and solution for “port 9000: Connection refused” error?

I am stuggeling with port 9000: Connection refused error. I work on Ubuntu 14.04 and faced the problem when trying to run Hadoop in a non-distributed mode, as a single Java process (compare Hadoop ...
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Ethernet Connection randomly disconnects after transmit queue 0 timed out

Description of problem: Ethernet connection gets disconnected at random apparently without any reason. I have tried the following command to restart my ethernet connection, sudo service ...