ENGR ASAD KHAN 1
https://www.youtube.com/watch?v=2QGgEk
20RXM&list=PLBbU9-
SUUCwUyqvfypPAHWOaDr7Wz4P6t
Protocols at OSI ,TCP/IP Models Layers:
Network Categories:
Local Area Network (LAN) Wide Area Network (WAN)
Size: usually small in size ,privately Size: No limitation, world wide
owned and link devices in a single
office, building, campus.
Technology: Ethernet, FDDI, Token Technology: X.25, Frame Relay, ATM,
Ring, Wireless LAN PPP, HDLC, PPPOE, MPLS etc
Transmission Medium: Ethernet Transmission Medium: Mix
Cable, Fiber Optic, Wireless Signals
Speed: High 10/100/1000/10000 Mbps Speed: Low
Cost: Less expensive Cost: Very expensive
Internet Service Provider (ISP):
1. Backbone network created and maintained by an
org/company.
2. Provides Internet and Services.
3. Categories:
a. International ISP.
b. Regional ISP.
c. National ISP.
d. Local ISP.
Ethernet:
1. Ethernet is the traditional technology for
connecting local area networks (LANs), enabling
devices to communicate with each other.
2. Created by DIX (Digital Intel Xerox).
3. Standard 802.3 (wired), 802.11 (WiFi)
1. Works on Layer-1 and Layer-2 .
Data Link Layer (Framing)
Physical Layer (bits transmission, medium specification).
2. Duplex: Half Duplex, Full Duplex.
5. Speed:
a) 10 Mbps (Ethernet)
b) 100 Mbps (Fast Ethernet)
c) 1000 Mbps (Gigabit Ethernet)
d) 10,000 Mbps (10 Gigabit Ethernet)
e) 40,000 Mbps (40 Gigabit Ethernet)
f) 100,000 Mbps (100 Gigabit Ethernet)
What are Network Layer Functions?
Thanks
