Each of these CCNA and CCNP tutorials will take you only a few minutes to read and / or watch...
... and when you're busy passing your exam, you'll be really glad you did!
Let's get started!
CCNA 3-Minute Video Boot Camp: VLANs
CCENT And CCNA Training: Hubs, Repeaters, and Broadcasts
CCENT And CCNA Training: Directly Connected Serial Interfaces
CCNA Training: Frame Relay Tips
CCENT And CCNA Training: OSI Model vs. TCP/IP Model
And here's my new CCNP TShoot Exam Tutorials and Videos page!
More CCNP videos later today, including a new CCNP TSHOOT video!
Speaking of videos, here's one I know you'll enjoy...