TAILIEUCHUNG - Protocols and Transmission Theory

Tham khảo tài liệu 'protocols and transmission theory', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Protocols Explained • Protocol History • Signalling – Frequency vs. Bit Rate Transmission and Protocol Theory 1 Protocol History • Ethernet conception • StarLAN • Token Ring • Cell vs. Packets – ATM vs. Ethernet • Ethernet comes of age Transmission and Protocol Theory 2 Protocol History • Born from the original Aloha Network in 1972 • Xerox, who pioneered the first PC with a GUI commission Bob Metcalfe to develop networking from their ALTO computers to Arpanet • The breakthrough was a device that could listen before transmitting, which allowed for full utilization of the bandwidth speed () • In 1977 they were issued the patent on CSMA/CD (Carrier-Sense Multiple Access with Collision Detection) Transmission and Protocol Theory 3 Protocol History • The key principle behind Ethernets success was not it’s speed early on or the way it transmitted within a network, but Metcalfe’s vision to have a standardized platform that WAS NOT proprietary • This was pushed further by joint efforts between Intel, DEC and Xerox in the late 70’s through to the early 80’s • Simultaneously the IEEE began working on standardizing protocol developments, starting with Ethernet, as Xerox continued to turn it’s patents over to them in an effort to drive global adoption with a standard platform Transmission and Protocol Theory 4 Protocol History • Metcalfe and others broke off on their own to form 3COM in 1979 • They released their first TCP/IP transceivers for UNIX a full 18 Months before the IEEE standard • The 3C100 Transceivers were being produced for DEC, Intel and Sun Microsystems • Both Apple and IBM were approached in an effort to push networking for the developing PC market • Apple said yes, but IBM said no because of their own Token Ring developments Transmission and Protocol Theory 5 Protocol History • 3COM, without the cooperation of IBM, decided to produce the highly successful ISA EtherLink adaptors for IBM PC’s • This was highly cost effective at the time ($950 USD) and .

TỪ KHÓA LIÊN QUAN
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.