CS Core

The Presentation Layer , also known as Layer 6 in the OSI (Open Systems Interconnection) model , is responsible for translating data between the application layer and the lower layers of the networ...

Introduction The Domain Name System (DNS) is a decentralised naming system that translates human-readable domain names, such as www.example.com, into IP addresses, such as 192.0.2.1, which are used...

The World Wide Web (WWW) is a system of interlinked hypertext documents accessed via the internet. It enables users to view and interact with multimedia content, including text, images, and videos,...

Introduction HTTP is the foundation of data communication on the World Wide Web. It is an application-layer protocol used for transmitting hypertext via the internet, allowing users to access web p...

Introduction File Transfer Protocol (FTP) is a standard network protocol used for transferring files between a client and a server on a computer network. Operating at the application layer of the I...

Simple Mail Transfer Protocol (SMTP) is a standard communication protocol used for sending and receiving email over the Internet. SMTP facilitates the transmission of electronic mail from a client...

Introduction Dynamic Host Configuration Protocol (DHCP) is a network management protocol used to automate the process of assigning IP addresses and other network configuration parameters to devices...

Network Security Network security encompasses the strategies, policies, and practices designed to protect the integrity, confidentiality, and accessibility of computer networks and their data. It i...

Introduction Cryptography is the practice of securing communication and information exchange through mathematical techniques that convert data into a form that is unreadable to unauthorized users....

Symmetric Encryption Symmetric encryption is a cryptographic method where the same key is used for both encryption and decryption of data. This approach is efficient for processing large amounts of...