DNS (Domain Name System)
DNS (Domain Name System) works to convert a memorable domain name into an IP address that devices use to communicate on the network. When someone types a domain name like “bardimin.com” in a browser, that request is sent to the DNS server to look for the appropriate IP address.
DNS performs cascading lookups to find IP addresses by using a list of registered domain names. If the local DNS server does not find the IP address it is looking for, it will search the higher DNS server until it finds the right entry. This process makes it easy for users to access websites without having to remember IP addresses.
Network Protocols in TCP/IP
UDP (User Datagram Protocol)
UDP is a protocol that works on top of IP in the TCP/IP system. Unlike TCP which ensures that data is sent and sorted, UDP does not provide this guarantee. This makes UDP faster and more efficient for applications that don’t require high reliability, such as video streaming, online gaming, and voice apps. Without the process of setting up a connection, UDP is ideal for real-time communication where speed is more important than accuracy.
PPP (Point-to-Point Protocol)
PPP is a protocol used to connect two points in a network, often used in dial-up and DSL connections. PPP provides a way for authentication, encryption, and data compression. This protocol allows devices to communicate securely and efficiently and supports different types of networks such as Ethernet and serial. With PPP, users can connect to the Internet more securely through the authentication process.
SLIP (Serial Line Internet Protocol)
SLIP is a simpler protocol than PPP and is used to connect computers to the Internet through serial channels. SLIP does not have any authentication or data compression features, making it less secure and efficient than PPP. Although SLIP has been largely replaced by PPP in modern use, some applications still use SLIP for simple connections without additional load.
VoIP (Voice over Internet Protocol)
VoIP is a technology that allows sound to be sent over an IP network. With VoIP, we can make phone calls over the Internet instead of through a regular phone network. This makes communication costs cheaper, especially for long calls. VoIP uses a variety of protocols to manage voice calls, such as SIP (Session Initiation Protocol) and RTP (Real-time Transport Protocol). The advantages of VoIP are the flexibility in using the device and the ability to add other services, such as video conferencing.
FTP (File Transfer Protocol)
FTP is a protocol used to move files between computers in a network. FTP allows users to upload or download files from a server with two channels: one for commands and one for data. This protocol is very useful for sharing large files or performing data backups. FTP also supports user authentication with a username and password, although there are more secure versions such as SFTP (SSH File Transfer Protocol) to improve the security of data transfers.
Internet Service Plan
Factors to Consider When Choosing an Internet Service
1. Price
Price is an important factor in choosing an internet service. Users should consider the budget and compare different plans from the internet service provider (ISP). Some ISPs may offer lower prices for certain speeds, but it’s important to factor in additional costs such as installation or device rental fees.