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So far Open4Tech Team has created 35 blog entries.

OSI Session Layer

The fifth layer of the OSI model is the session layer. It controls the connections between different systems by tracking the dialogs between computers, which are called sessions. A session is a communication channel that gets established between two hosts for the exchange of information for a limited period. It allows the systems to communicate

2019-10-30T22:12:28+02:00By |Categories: Explained Simply|0 Comments

OSI Transport Layer

The fourth layer of the OSI model is the transport layer. Its purpose is to provide secure communication and transparent transmission of the data flow. The data which is received from the session layer is divided into small data units called segments. Each segment contains the sender and receiver port number along with the sequence

2019-10-30T22:19:46+02:00By |Categories: Explained Simply|0 Comments

OSI Network Layer

The third layer of the OSI model is the network layer. It is the first completely independent of the physical environment level, allowing two or more nodes to retransmit data no matter what physical network they are connected to. This permits different networks to be interconnected. The network layer finds out the easiest, shortest, and

2019-10-13T23:15:08+03:00By |Categories: Explained Simply|0 Comments

OSI Model Overview

The Open Systems Interconnection (OSI) model is a conceptual model created by the International Organization for Standardization. It provides interoperability between different communication systems using standard communication protocols. Or in simpler words, it is a logical model/representation of how the network systems are supposed to send data and communicate with each other. The model splits

2019-11-11T17:27:39+02:00By |Categories: Explained Simply|0 Comments

Storing Data in XML Files Using C#

XML files are a powerful tool to contain any structured data required for a .NET application or ASP .NET website to run. These files are based on the main principles of HTML and when you create an XML file, you should follow these few rules: The XML file must start with a declaration instructing how

2019-10-20T12:14:41+03:00By |Categories: C#|2 Comments

Website Lazy Loading

Lazy loading, the practice of loading resources when needed and not before that, is often implemented on websites as faster loading times can be crucial for user experience or Google's rating systems. Since July 2018 Google has increased the importance of page speed in its website grading systems, so faster loading websites have way better

2019-09-15T22:16:58+03:00By |Categories: How To|0 Comments

SQL DELETE Statement

The SQL DELETE statement is used to delete existing records in a table. DELETE FROM table_name WHERE condition; Parameters: DELETE FROM table_name  - The name of the table where records will be deleted.WHERE condition – Specifies which records should be deleted. If you omit it, all records in the table will be deleted. Example: Consider the Products

2019-09-02T22:41:53+03:00By |Categories: Explained Simply|Tags: |0 Comments

Lazy Loading

Applications often need a large amount of resources in order to run completely and without errors. However, different modules, forms, etc. of an application usually need different sets of resources to be loaded and not all of them. While all resources can be loaded at once, it would sometimes cost a lot of time to

2019-09-08T21:33:33+03:00By |Categories: Explained Simply|0 Comments