Lecture+03+-+Networks+_+Information

Lecture+03+-+Networks+_+Information - CS170Lecture3:...

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CS 170 Lecture 3:  Computer Networks  Kristian Stout stouty@rci.rutgers.edu Office:  IN: Livingston Student Center, A lounge near “the rock” and the commuter lounge. Office Hours: TTH 5:30 – 6:30
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Computer Networks computer network  is an interconnection of a  group of computers and related equipment.  Need and Origin Arpanet was the first network as we typically think of  them. Types Area covered ( WAN, LAN, VPN, etc ) Communication media ( Fiber, Ethernet, Wireless, etc ) Administration (Intranet, Extranet, Internet) Protocols and Hardware TCP/IP, Ethernet etc Switches, Routers, NIC Cards etc
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Communication Types Based on when sender and receivers are active Synchronous Two active parties Asynchronous Two parties at different tiems Based on number of receivers Broadcast communication Multicast communication Point-to-point communication
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The Internet “totality of all the wires, fibres, switches, routers,  satellite links and other hardware for transporting  information between addressed computers.”
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The Client/Server Structure Server  is the computer that on request provides  some services Client  is the computer that requests for some  services from the server
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A client is not ALWAYS a client; sometimes it can be a server. Computers continually   shift roles in this relationship.
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IP Addresses and Domain Names IP addresses:
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Lecture+03+-+Networks+_+Information - CS170Lecture3:...

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