Online CCNA Courses

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The Newest Courses

CUCM Basics

Need to know

OSPF link-state data packets

Match update packets used to build and synchronize link-state databases with their definitions. Define different neighbor states that OSPF routers go through.
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Spanning Tree Protocol Explained

Recognize how the spanning-tree algorithm elects a root bridge and root port, elects a designated port.
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Hunt Groups and Line Groups

Identify how the call routing works when it has to reach multiple recipients and what are the distribution algorithms.
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Partitions and Calling Search Spaces

After completing this topic, you should be able to identify the roles of the Partitions and the Calling Search Spaces.
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Network Address Translation

Providing Internet access by configuring network address translation (NAT) in your Internet router. Port address translation (PAT) explained.
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Starting a Switch and Basic Configuration

Describe the startup of a Cisco IOS switch, log into the switch, configure it via the command-line interface.
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Latest security threats

Fri, 17 Feb 2017 22:22:51 CST

Cisco ASA Clientless SSL VPN CIFS Heap Overflow Vulnerability

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Fri, 17 Feb 2017 21:46:43 CST

Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: January and February 2017

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Fri, 17 Feb 2017 21:13:20 CST

Cisco Unified Communications Manager Information Disclosure Vulnerability

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Thu, 16 Feb 2017 17:53:19 CST

Cisco Secure Access Control System XML External Entity Vulnerability

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Wed, 15 Feb 2017 16:00:00 CST

Cisco Secure Access Control System Cross-Site Scripting Vulnerability

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Wed, 15 Feb 2017 16:00:00 CST

Cisco UCS Director Privilege Escalation Vulnerability

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