Tổng diện tích mạng P3

Chia sẻ: Tien Van Van | Ngày: | Loại File: PDF | Số trang:21

Thêm vào BST

Báo xấu

70
lượt xem 5
download

Download Vui lòng tải xuống để xem tài liệu đầy đủ

Frame Relay Systems should be as simple as possible but not simpler Albert Einstein Many people are familiar with the ﬁrst widely used service of the datacomms era—X.25. As a mature product of the ‘analogue era’, it is a complex protocol. Much of this complexity arose from the need to protect against errors introduced by noisy analogue transmission circuits and the comparatively long round-trip delay caused by their low transmission speeds. Frame Relay, by contrast, is very much a product of the ‘digital age’, exploiting the much lower error rates and higher transmission speeds of modern digital systems. In particular, Frame Relay...

Chủ đề: