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| Lecture - 23 X.25 and Frame Relay | Lecture - 25 Medium Access Control - I | Lecture - 27 Medium Access Control - III |
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| Lecture - 28 IEEE 802 LANs | Lecture - 29 High Speed LANs | Lecture - 31 Cellular Telephone Systems |
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| Lecture - 37 Audio and Video Compression | Lecture - 38 Multimedia Services | Lecture - 39 Secured Communication - I |
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| Lecture - 40 Secured Communication - II |
