Kommunikatsioonimudel
Some of the most important AALs
include:
AAL 1: For Constant Bit Rate (CBR) services and circuit emulation.
AAL 2: For Variable Bit Rate (VBR) services.
AAL 5: For data (e.g., IP datagrams)
AAL has two sublayers: the Segmentation And Reassembly (SAR) sublayer and the Convergence
Sublayer (CS). The SAR sits just above the ATM layer; the CS sublayer sits between the user
application and the SAR sublayer.
54. Võrkude turvalisus
Kuna tegu on hea konkreetse küsimusega, millest näiteks Kurosel on terve peatükk, ja siinkirjutaja ei
tea, millest Rein loengus rääkis, kleebin siia mõned mõtted Kurose raamatu 7. peatüki sissejuhatusest
lk 549-552:
Let us introduce Alice and Bob, two people who want to communicate "securely." This being a
networking text, we should remark that Alice and Bob may be two routers that want to securely
exchange routing tables, etc. We can identify the following desirable properties of secure
communication:
• Secrecy
annaabi.ee 
