The Tech Side

• TCP/IP

The term "TCP/IP" is usually used to refer to a suite of protocols which specify how devices communicate over a packet switched network. The term "OSI" is used to refer to a model which specifies a layered model architecture of how devices communicate over a packet switched network. The OSI model was an ideal model proposed by the ISO. OSI is a seven layered model and the seven layers are . Read On...

• Operating Systems

The kernel is the operating system. Period. The kernel is the Unix operating system. It is the kernel which takes care of all the responsibilities of an O.S. i.e. scheduling, resource management, file system operations etc. Shell is basically the interface that unix uses to interact with the users. It is in this sense that the shell is called the command interpreter. Since unix is a multi-user O.S., each user has it's own shell. Since one user's shell never interacts with another user's shell directly, the shells give a user the illusion that (s)he is the only user using the system. Read On..

• Storage Networks

Historically, storage has been an integral part of the computing machine. The primary example of this is the hard-disk which connects to the processor via a SCSI interface. Initially, the growth in the demand of storage mapped directly to growth in the storage capacity of the hard disks or to multiple hard disks connected to a single machine. However, the SCSI connection limits the access speed and the number of hard disks that can be connected to a machine. Read On...

• C++ Notes

Intricacies and gotchas for C++. Read On...

• Security in Wireless Networks

Wireless LANs are broadcasting secrets of enterprises that have spent millions on Internet security. Wireless security has become a serious business requirement today. So much so that some companies have blocked wireless deployment till the networking industry makes the wireless networks as secure as wire-line networks. Read On...