Showing 10 of 26 Blog Posts
Layer 2 This layer, known as the switching layer, allows end station addressing and attachment. Because architectures up to Layer 2 allow end station connectivity, it is...
Question: What is the difference between a router and hub or switch? Answer: A router is a more sophisticated network device than either a switch or a hub. Like hubs...
STP is enabled by default for all VLANs in a switch. To change the priority to a lower value for root switch elections, use one of the...
Three classes of attack are commonly found in today’s network environment: Access attacks Reconnaissance attacks Denial of service (DoS) attacks Access Attacks An access attack is just...
Internet Control Messaging Protocol (ICMP) is used by ping and traceroute utilities. Packet Internet Groper (ping) allows you to validate that an IP address exists and can...
WAN Interfaces WAN interfaces are used to provide a point of interconnection between Cisco routers and other network devices. Types of WAN interfaces include Basic Rate Interface...
A MAC address is hard-coded (burned in) on the network interface controller (NIC) of the Physical layer device attached to the network. Each MAC address must be...
A broadcast domain is simply the group of end hosts that will receive a broadcast sent out by a given host. For example, if there are ten...
CCNA exam success depends on mastering the fundamentals, and two important fundamentals are knowing exactly what the terms “collision domain” and “broadcast domain” mean. In this free...
