Cisco Certification: The Cisco Three-Layered Hierarchical Model

by: Cisco has defined a hierarchical model known as the hierarchical internetworking model. This model simplifies the task of building a [...]

Cisco Certification: Selecting Cisco Products

by: You must understand the business requirements of the network before buying a product. Based on the requirements, you can select the [...]

Cisco Certification: Cabling Cisco Devices

by: Unshielded Twisted Pair (UTP) is a cable that has four pairs of wires twisted inside it to eliminate electrical interference. UTP cables [...]

Cisco CCNA Certification: Five Things To Do DURING The Exam

by: Chris Bryant, CCIE #12933 There are plenty of articles out there about how to prepare for the CCNA exam. However, there are also things you can do to [...]

Cisco CCNA Certification: Should You Take The One-Exam or Two-Exam Approach?

by: Chris Bryant, CCIE #12933 One question I’m often asked by CCNA candidates is whether to take the “one big exam”, or take the two separate exams [...]

Cisco CCNA Certfication: Introduction to ISDN, Part I

by: Chris Bryant From the CCNA to the CCIE, ISDN is one of the most important technolgies you'll work with. It's also very common in the field; ISDN is [...]