Learn what is OSI Model, osi reference model or open system interconnection model or networking model including Application Layer, Presentation Layer, Session Layer, Transport Layer, Network Layer, Data Link Layer and Physical layer. Definition, Function and use of OSI network model. Protocols in computer network layers of OSI model.

Notes : https://techterms.in
Facebook :   / dgtechterms  

The Data Link layer performs two basic functions:
It allows the upper layers to access the media using techniques such as framing.
Controls how data is placed and received from the media using techniques such as media access control and error detection.

Physical Layer converts received binary sequence into signals and transmit over local media. It can be an electrical signal in case of Copper Cable or LAN cable, Light signal in case of Optical Fibre and Radio signal in case of Air as Local Media. #TechTerms

Must learn:

DHCP Protocol :    • DHCP Explained  Dynamic Host Configu...  
ARP Protocol :    • Address Resolution Protocol (ARP)  E...  
DNS Explained :    • DNS (Domain Name System)  Explained ...  
OSI Model :    • OSI Model Explained | OSI Animation |...  
IP Address :    • What is IP address and types of IP ad...  
NIC :    • What is NIC or Network Interface Card...  

Network Protocol :    • What is Network Router, Ping Test and...  
Network Topology:    • Network topology types (Bus, Star, Ri...  
Network Router :    • What is Network Router, Ping Test and...  
Network devices :    • Network Components  Endpoint, NIC, L...  

Firewall :    • Firewall  Software and Hardware Expl...  
Firewall types :    • What is firewall? | Types of firewall...  
Firewall vs :    • Hardware Firewall vs Software Firewal...  
Firewall working :    • How firewalls work | Network firewall...  
Firewall limits :    • Firewall limitations  Software and H...  

Domain name :    • What is Domain Name, URL, Web Page, W...  
LAN cable :    • What is LAN cable or Ethernet cable o...  
Hostname :    • What is Host, Local Host, Host Name, ...