Text

E-book Data Communications and Network Technologies

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Penilaian

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WANs usually cover a geographical area of tens to thousands of kilometers,and are able to connect multiple cities or countries, or span several continents andmeanwhile provide long-distance communication, thus forming an internationalremote network. For example, an enterprise has two LANs in Beijing andShanghai, and when these two LANs are connected, a WAN is created. Gener-ally, WAN requires to lease the line of Internet Service Provider (ISP) and pay acertain fee to ISP for bandwidth every year. The bandwidth is related to the feepaid. In the early days, households used Asymmetric Digital Subscriber Line(ADSL) to dial up to access the Internet, so there were different bandwidthstandards such as 2 Mbit/s bandwidth, 4 Mbit/s bandwidth and 8 Mbit/s band-width, and corresponding charges. The technologies used in WAN include PPP,PPPoE and HDLC. The larger ISPs in China are China Telecom, China Mobileand China Unicom.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

621.382 HUA d

Penerbit

Singapore : Springer Nature., 2023

Deskripsi Fisik

568 hlm

Bahasa

English

ISBN/ISSN

9789811930294

Klasifikasi

621.382

Tipe Isi

text

Tipe Media

computer

Tipe Pembawa

online resource

Edisi

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Subjek

Communication Engineering

Info Detail Spesifik

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Pernyataan Tanggungjawab

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Versi lain/terkait

Lampiran Berkas

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