Networks allow you to:

Collaboration

Effectiveness of collaboration

Computer network

LAN components

switch

Network Interface Card (NIC)

Media Access Control (MAC) address

Unshielded twisted pair (UTP) cable

Optical fiber cable

IEEE 802.3 (Ethernet) Protocol

10/100/1000 Ethernet

WAN components

router

Internet Service Provider (ISP)

-Hypertext transfer protocol (HTTP)

browser

Alternatives for WAN

Point-to-point lines

Public-switched data network (PSDN)

Virtual private network (VPN)

Firewall

Search engine

Web Search Engine Requirments

Web crawlers

Search engine indexing

3-tier architecture of web applications

Network Layers

Layer 1 (Network Access Layer)

Layer 2 (Internet Layer) and Layer 3 (Transport Layer)

Layer 4 (Application Layer)