Un VLAN (Virtual Local Area Network) est un réseau local virtuel qui permet de segmenter un réseau physique en plusieurs sous-réseaux logiques. Il fonctionne au niveau 2 du modèle OSI (couche liaison de données) et permet d’isoler des groupes d’appareils, même s’ils sont connectés à la même infrastructure physique (comme un switch).

Po…Read More

18 Essential Network Ports: A Must-Know Guide for Secure and Efficient IT Operations

FTP (File Transfer Protocol) – TCP/21
Purpose: Used for transferring files between clients and servers.

SSH (Secure Shell) – TCP/22
Purpose: Provides a secure channel for remote login and command execution.

Telnet – TCP/23
Purpose: Offers unenc…Read More

Comparative Analysis of Power Consumption between MQTT and HTTP Protocols in an IoT Platform Designed and Implemented for Remote Real-Time Monitoring of Long-Term Cold Chain Transport Operations DOI: 10.3390/s23104896

Signal-to-Noise Ratio (SNR):
Measure before/after denoising.
Formula:$$
\[
\text{SNR (dB)} = 10 \log_{10} \left( \frac{P_{\text{signal}}}{P_{\text{noise}}} \right)
\]$$

$$ f(t) = \mathcal{F}^{-1}\{F(\omega)\} = \frac{1}{2\pi} \int_{-\infty}^{\infty} F(\omega) e^{i \omega t} \, d\omega $$

$$f(t) = \mathcal{F}^{-1}\{F(\omega)\} = \frac{1}{2\pi} \int_{-\infty}^{\infty} F(\omega) e^{i \omega t} \, d\omega$$

I present to you an account in the Saudi Digital Library, which contains many global and Arab databases such as (Dar Almandumah, IEEE, EBSCO, SPRINGER, PROQUEST, …….), and all SNDL databases provided by this library with a subscription to all new research for the year 2024.
# Account Information:
Username: AAMusa
Password: @Aa1234567
……Read More