Configure EtherChannel on Cisco switches with LACP: bundle two links into one Port-channel, verify with show etherchannel summary,…
Configure Spanning Tree (Rapid PVST+) on Cisco switches: elect the root bridge, read port roles and states, and…
Configure and read CDP and LLDP on Cisco switches: see what is on each port, run show cdp…
Configure an 802.1Q trunk between Cisco switches: tag VLANs, set the native VLAN, prune the allowed list, and…
By default, a switch puts every port in one big broadcast domain. Sales, Engineering, the printers, and the…
Every CCNA command you actually need, grouped the way you use them, on one page you can keep…
Fail the CCNA and you wait five days before you can retake it. Pass it and you cannot…
You are choosing your first networking certification, and it usually comes down to two: the Cisco CCNA and…
Is the CCNA worth it? For most people aiming at a networking career, yes, but the salary figures…
The CCNA punishes one habit harder than any other: assuming you can come back to a question later.…
The CCNA is a single exam: 200-301, 120 minutes, 300 US dollars. One exam earns the certification, with…
Domain 1, Network Fundamentals, is a 20 percent block of the CCNA 200-301 exam and the foundation the…
