Tuesday, May 17, 2016

CCNA(2nd class)

Flavours of network

1.       LAN
è Full form: Local Area Network
è It is the network where workstations(host or node) connected to a single department.
è Typically LAN means Ethernet LAN.
è Other variations of LAN are: Token ring, FDDI(Fibre Distributed Data Interface)

2.       MAN
è Full form: Metropolitan Area Network
è Larger than LAN but smaller than WAN.
è Example: city or college network

3.       WAN
è Full form: Wide Area Network
è It covers wide geographical area
.
4.       SAN
è Full form: Storage Area  Network

5.       VPN
è Full Form: Virtual Private Network


Some Basic Terminologies:
Protocol
è Set of rules and regulations to perform specific task.
è Simply it is a language

Protocol stack
è Two or more protocols working together is called protocol stack.
è Example: TCP/IP stack, TCP/IP suite

IETF
è Internet Engineering Task Force(IETF).
è It is an open community of network designers, operators, vendors and researchers concerned with the architecture and smooth running of the internet.

RFC
è Request For Comment(RFC).
è All technical details related to protocol in deep.

IEEE
è It is a professional organization that defines standards in network communication and other areas.

TIA/EIA
è Telecommunication Industry Association/Electrical Industry Alliance
è It defines standard in telecommunication and cabling.

IANA
è Internet Assigned Number Authority

è Responsible for IP address allocation and DNS record hosting and maintenance.

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