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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.

Unlike other certifications that focus primarily on one technology (i.e. Hadoop, MySQL, etc.), AWS certifications may cover a couple dozen AWS services.

Learn the commands, settings and products you need to set up a RADIUS server for authentication, authorization and accounting services.

Propel your career with CRISC certification and expand your understanding of the impact of IT risks, and how they relate to your organization. Enroll today!

CISA – Certified Information Systems Auditor designation is a globally recognized certification for IS audit control, assurance and security professionals.

Despite an organization's efforts to prevent downtime and avoid compromises, failures will still happen from time to time. How do you plan for failures?

Learning Hadoop is not a simple task but can be a lot easier if you know the hurdles and pitfalls to watch out for. Join Global Knowledge Instructor Rich Morrow as he shares battle-tested expertise to guide you through learning Hadoop.