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Join Microsoft SQL Server expert Brian Egler for an hour-long webinar covering the key features and updates in the upcoming release of Microsoft SQL Server 2014! You will get a thorough review, along with demonstrations, of how SQL Server 2014 provides substantial improvements in performance, manageability, and availability that will make your job easier.
Instructor Carol Kavalla talks about the advantages of taking a Cisco Data Center Unified Fabric Implementation class from Global Knowledge.
Your Microsoft SQL Server database often contains the most valuable information in your organization. Get tips for securing it properly and effectively in this free, information-packed webinar with Microsoft SQL Server expert Gidget Pryor. In just an hour, Gidget will demonstrate the layered security approach used by SQL Server. She will step you through the process and best practices of setting up logins, users, roles, schemas, and permissions, and she will review the security model changes that have taken place from SQL Server 2005 through SQL Server 2012. She will also review SQL Server 2012 training and certifications.
Instructor John Harmon explains subnetting using binary numbers and decimal conversions.
Instructor John Harmon continues his explanation of subnetting by showing how subnet masks can be used to sub-divide networks.
Diane Teare, Global Knowledge's Cisco Course Director, discusses the advantages to taking our CCNA Boot Camp.
That depends on their configurations. For example: While it makes very good sense to include redundant physical links in a network, connecting switches in loops, without taking the appropriate measures, will cause havoc on a network. Without the correct measures, a switch floods broadcast frames out all of its ports, causing serious problems for the network devices. The main problem is a broadcast storm where broadcast frames are flooded through every switch until all available bandwidth is used and all network devices have more inbound frames than they can process.
As we discussed previously, Cisco created the Nexus Operating System (NX-OS) to power its next-generation data-center switching platform. While this new OS shares many similarities to the original IOS, there are some definite differences that you need to be aware of as you begin using it.
The most obvious difference is that hubs operate at Layer 1 of the OSI model while bridges and switches work with MAC addresses at Layer 2 of the OSI model. Hubs are really just multi-port repeaters. They ignore the content of an Ethernet frame and simply resend every frame they receive out every interface on the hub. The challenge is that the Ethernet frames will show up at every device attached to a hub instead of just the intended destination (a security gap), and inbound frames often collide with outbound frames (a performance issue).
Anyone who’s managed switches over the years knows that the Spanning-tree protocol (STP) is both the best and worst thing to ever happen to the data center at layer 2 of the OSI model. On the plus side, the Spanning-tree protocol is what first allowed us to create redundant paths within our switching infrastructure, making our data center much more resilient to outages than ever before. Anyone who’s experienced a “broadcast storm” knows the full value of Spanning-tree in the traditional switching environment. We’ve also seen many improvements in Spanning-tree over the years to make it work faster and more efficiently (i.e. Rapid Spanning-tree, Bridge Assurance, and many others).