By Tx/Rx reverse the technician can address this issue.
C. Tx/Rx reverse
Explanation:
Technician has to trouble the laptop, since the laptop is connected and got internet while is the network resources inside the office. But if he connects the same laptop in research lab end user is not connected
Following troubleshooting to made
1. Routing is done properly
2. Any packet dropping by using TRACE command in windows operating system.
Since DHCP is used in office, whereas same type is not used in research lab. End user can try TX/RX reverse cable to connect in the research laptop.