QnA Plus

Installing a high availability web server cluster on Ubuntu 12.10 using HAProxy, HeartBeat and Lampp

By Mrinmoy Roy January 28, 2016TechnologyNo Comments

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…

Setting up RAID 1 (Mirroring) using “Two Disks” in Linux

By Mrinmoy Roy January 28, 2016TechnologyNo Comments

RAID Mirroring means an exact clone (or mirror) of the same data writing to two drives. A minimum two number of disks are more required in an array to create…

How does Traceroute Work?

By Srikanta January 27, 2016Technology, NetworkingNo Comments

The network administrators use the tranceroute command very frequently to discover the path between two network nodes. Where the tranceroute command is running is the source node and destination node…

Where to Use Call by Reference in C

By Srikanta January 26, 2016Programming, C, Technology1 Comment

If you compare two parameter passing mechanisms, Call by Value and Call by Reference, in C programming language, Call by Value is much simpler in syntax and easy to understand. Then…

Call by Value vs Call by Reference in C

By Srikanta January 22, 2016Programming, C, Technology1 Comment

Call by Value and Call by Reference are related to the way we pass parameters in time of calling C functions. In Call by Value mechanism, we pass the VALUE…