Engineering Clinic

Virtual Programming Laboratory (VPL)  This post tells you how to install VPL Jail Server Installation in Ubuntu 20.04 and how to configure it using Moodle Learning Management System. VPL - Virtual Programming Laboratory  For full installation with complete description, follow the video What is VPL? VPL is Virtual Programming Laboratory which is a tool for programming assignments, evaluation and running of programs. The programming languages supported by VPL is C, C++, Java, Python, Perl, PHP, NodeJS, Verilog, etc. Step 1 - Install  VPN Jail Server Installation  My Server configuration  16GB RAM and 16 Core PRocessor (Intel Xeon)  Virtual Machine  Ubuntu 20.04 (64 bit OS). To download the softwares  https://vpl.dis.ulpgc.es/index.php/home/download  Unzip or untar the above file in the home folder (in my case it is /home/tspradeepkumar/ ) $ cd vpl-jail-system-2.7.2/ $ sudo ./install-vpl-sh VPL Jail Server Installation This will take some tim...

Often we get an error in python in the ssl.c file namely: ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: The reason is your computer didnt have a valid certificate. There are many options in the internet and none of them worked. Here is the solution:  Download https://letsencrypt.org/certs/lets-encrypt-r3.pem  rename file .pem to .cer double click and install and then try to run app your SSL issue will resolved. Cheers !!! Here are the screenshots for the above operations SSL certificate Error SSL certificate Error SSL certificate Error SSL certificate Error SSL certificate Error SSL certificate Error

AODV Protocol Modification In this post, you can learn ·        What is AODV protocol ·        How to measure the energy, node position and node speed during AODV transmission ·        To understand and implement the promiscuous mode in AODV Introduction A mobile Adhoc network is self-configurable multi-hop wireless network that will not depend on pre- existing infrastructure such as access points. A MANET contains several wireless nodes where each node may move randomly, chose to communicate with any node in its range directly. In order to communicate with any node not in its range, intermediate nodes help as routers to forward the packet to the destination. The characteristics of MANETs are energy constrained, multi-hop, dynamic topology, no central authority and device heterogeneity. A node can join any network and can leave the network anytime. Due to this higher mobility, MANETs ex...