CCNA

All interfaces on a Cisco switch are turned on by default. This means that an attacker could connect his laptop …

When a frame arrives at a switch interface, the switch looks for the destination hardware (MAC) address in its MAC …

As you probably already know, each network card has a unique identifier called Media Access Control (MAC) address. MAC addresses …

Layer 2 switching (also known as the Data Link layer switching) is the process of using devices’ MAC addresses to …

Unlike EIGRP, OSPF doesn’t support automatic summarization. Also, unlike EIGRP, where you can summarize routes on every router in an …

The OSPF MD5 authentication is more secure than the plain text authentication. This method uses the MD5 algorithm to compute …