Why Function Pointers are Used in C
During program execution, we know that variables are stored in the physical memory (RAM) in the process' address space. One variable can be stored in multiple bytes. The address of…
What is ARP and How does it work?
ARP stands for Address Resolution Protocol. It is used by the Internet Protocol (IP) to map IP network addresses (32 bit Logical Address) to the hardware addresses (48 bit Mac Address) used…
How to Download Album from Facebook
You can download all pictures from a Facebook album in a single go. You need to have the viewing permission of that album. This can be done using chrome browser…
How to install Ping or Ping6 using YUM
yum install iputils Ping is a network administration utility tool to check reachability of network node (computer or router) from a computer where the command runs. It also gives the…
Installing a high availability web server cluster on Ubuntu 12.10 using HAProxy, HeartBeat and Lampp
What is the main objective of this entire topology? Redundancy and Load Sharing! Imagine a scenario where your single web server is receiving millions and millions of HTTP requests per second, the CPU…