Configuring directly connected serial interfaces seems simple enough, but there are important details you must know to make it work and pass the CCNA exam! Learn these details from Chris Bryant, CCIE #12933.

Configuring standard ACLs is a skill you'll use on all your Cisco exams. Learn the basics from Chris Bryant, CCIE #12933.

CDP seems simple enough, but there are plenty of details to master in order to earn your CCNA! Learn these details from Chris Bryant, CCIE #12933.

Once you earn your CCNA, you have to know how to keep it! Learn the latest recertification requirements from Chris Bryant, CCIE #12933.

When you�re getting ready to pass the CCNA exam, one of the hardest parts is keeping the internal router components straight! Learn the differences between these components from Chris Bryant, CCIE #12933.

Reinforce your VLAN and switching theory knowledge with this case study from Chris Bryant, CCIE #12933.

CCNA candidates know what switching is, but what about the differences between packet, frame, cell, and circuit-switching? Learn how to keep these terms straight and pass the CCNA exam in this article from Chris Bryant, CCIE #12933.

One basic question certification candidates have is whether a CCNA, CCNP, or CCIE is worth pursuing. Learn how valuable these and other computer certifications are from Chris Bryant, CCIE #12933.

After earning your CCNA, your work�s not over! Before choosing the next certification you want to earn, read this important article from Chris Bryant, CCIE #12933.

Chris Bryant, CCIE #12933, tells CCNA candidates why they need to know the OSI model, and that it's not just for the exams!