ccna 4 | bits

Network Security

Jul 10, 2011 · 6 min read · ccna 4 security SSH basic cisco commands info

Why is security important ? If the security of the network is compromised there could be seroious consequences such as: loss of privacy theft of information legal liabity As time went on, and attackers' methods and tools improved, attackers no longer required the same level of sophisticated knowledge. Common terms for…

Frame Relay

Jul 4, 2011 · 2 min read · ccna 4 protocols info

Definition Frame relay este un protocol de comunicare de inalta viteza pentru retele WAN. Beneficii: Latime de banda mai mare la un cost mai scazut Surplus de latime de banda pentru o perioada limitata (burst) Mai putin overhead Viteze intre 1,544 Mbps si 44,376 Mbps Functioneaza atat la layer fizic cat si la data lin…

HDLC, PPP

Jun 27, 2011 · 9 min read · protocols ccna 4

Leased Line: HDLC, PPP Comutare circuite: HDLC, PPPComutare pachete X.25, Frame Relay, ATM HDLC High Level Data Link Control Standardizat ISO 13239 Poate encapsula decat trafic IPv4 cHDLC Poate multiplexa mai multe protocale de Layer 3 Structura Frame cHDLC Default pe toate routere-le CISCO (c-if)#encapsulation hdlc(c…