Hadoop installation

Currently, I am pursuing online Big Data Hadoop training from Intellipaat and I am finding difficulties to perform single node installation on my system. Right now I am using Virtual Box and Linux as the OS. My training institution has provided Hadoop 2.7.3 package.

Hey there, I hope this is the right place to post this. I've been having this problem for about a week now, and it happens daily, but for some reason the internet connection will intermittently disconnect throughout the day. Sometimes it'll be fine for several hours, and sometimes it'll drop...