'Communications link' presentation slideshows

Chapter 3

679 views • 39 slides

Lecture 6 User Authentication ( cont )

Lecture 6 User Authentication ( cont ). modified from slides of Lawrie Brown. Password File Access Control. can block offline guessing attacks by denying access to encrypted passwords. make available only to privileged users. vulnerabilities.

364 views • 26 slides

BASIC TELCOMMUNICATIONS

BASIC TELCOMMUNICATIONS . The public switched telephone network (PSTN) is a combination of many central offices throughout the country and the world connected by copper cables, fiber optics, microwave and cellular links, satellites and undersea telephone cables.

354 views • 22 slides

618 views • 16 slides

S ocial M edia

S ocial M edia. R ecommendations & S trategy. S ocial M edia for Business: A Brief Introduction.

242 views • 8 slides