/Information security tutorials point pdf

Information security tutorials point pdf

A system of interconnected computers information security tutorials point pdf computerized peripherals such as printers is called computer network. This interconnection among computers facilitates information sharing among them.

Computers may connect to each other by either wired or wireless media. Classification of Computer Networks Computer networks are classified based on various factors. It may be spanned across your table, among Bluetooth enabled devices,. Ranging not more than few meters. It may be spanned across a whole building, including intermediate devices to connect all floors. It may be spanned across a whole city. It may be spanned across multiple cities or provinces.

It may be one network covering whole world. Inter-Connectivity Components of a network can be connected to each other differently in some fashion. By connectedness we mean either logically , physically , or both ways. Every single device can be connected to every other device on network, making the network mesh.

All devices can be connected to a single medium but geographically disconnected, created bus like structure. Each device is connected to its left and right peers only, creating linear structure. All devices connected together with a single device, creating star like structure. All devices connected arbitrarily using all previous ways to connect each other, resulting in a hybrid structure. Administration From an administrator’s point of view, a network can be private network which belongs a single autonomous system and cannot be accessed outside its physical or logical domain. A network can be public which is accessed by all.

Two systems can be connected Point-to-Point, or in back-to-back fashion. They both reside at the same level and called peers. There can be hybrid network which involves network architecture of both the above types. Network Applications Computer systems and peripherals are connected to form a network. PDF stands for portable document format. It is a format that every operating system on virtually any computer can read. Its become the default standard for transferring and viewing files in an easy way.

The problem is that Visual Basic has no built in VB6 PDF functions. Because of this it has been very hard in the past to create PDF files from VB. Hopefully by the end of this Visual Basic Tutorial, PDF creation will be an easy thing for you to understand and do first hand. PDF is a pretty complex data format.