Počítačové sítě 05 Linková vrstva Rozšířené LAN

New channel Libor Dostalek: title sample judged 'whole' (Systematic, sequential lecture series on computer networks and PKI/digital signatures taught by an expert, with every up); passed a second screen for sellers/exam-prep/re-uploads; 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.