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             31 March, 2023



 » Certification Tests


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IT Certification (Popularity: )
One of the great things about the world of certification is that the possibilities are endless. New certifications are designed with the need of today's fast and growing markets. There is a finite number of IT certifications that can be obtained in unlimited combinations to give its holders their own unique sets of skills and knowledge in order to compete in the market. There are two kinds of certification paths: horizontal and ...

OSI Overview (Popularity: )
When computers were first linked together into networks, moving information between the different types of computers was a very difficult task. In the early 1980s, the International Standards Organization (ISO) recognized the need for a standard network model. This would help vendors to create interpretable network devices. The Open Systems Interconnection (OSI) reference model, released in 1984, addressed this need. The OSI model describes how information makes its way from ...

Cisco CCNA Certification Exam Tutorial: The OSPF RID (Popularity: )
OSPF is a major topic on your CCNA exam, as well it should be. OSPF is a widely-used WAN protocol, and you need to learn the fundamentals before moving on to more complicated configurations. One such detail is the OSPF Router ID, or RID. The RID is the dotted decimal value by which other OSPF routers will identify a given OSPF router. There are some interesting defaults for this value, and ...

Cisco CCNP Certification / BSCI Exam Tutorial: ISIS Hellos And Adjacencies (Popularity: )
In my last ISIS tutorial, I mentioned that while ISIS and OSPF are both link state protocols, their actual operation differs greatly. To pass the BSCI exam and earn your CCNP, you’ll need to know these differences! Today, we’ll take a look at ISIS Hello types and the adjacency types that form through the use of these Hellos. Hello packets have been mentioned several times with ISIS, and with good reason. ...

Cisco CCNP Certification / BCMSN Exam Tutorial: Uplinkfast (Popularity: )
You remember from your CCNA studies that when a port goes through the transition from blocking to forwarding, you’re looking at a 50-second delay before that port can actually begin forwarding frames. Configuring a port with PortFast is one way to get around that, but again, you can only use it when a single host device is found off the port. What if the device connected to a port is ...