Online CCNA Courses

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The Newest Courses

ICND2
CUCM Basics

Need to know

Multiarea OSPF Configuration and Verification

After completing this topic, you should be able to describe commands used to configure and verify a multiarea OSPF.
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Introducing OSPF

After completing this topic, you should be able to identify information that must match between routers to form an adjacency.
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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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Understanding Binary Basics

We will described how to convert decimal numbers to binary numbers and binary numbers to decimal numbers, useful for IP address and subnet calculations.
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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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Exploring the Packet Delivery Process

How packets go through devices at layers 1, 2, and 3. Mapping between layer 2 and 3 addresses by using ARP. Common tools to determine the path across the network.
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Latest security threats

Thu, 27 Apr 2017 21:26:43 CDT

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

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Mon, 24 Apr 2017 17:02:54 CDT

Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: September 2016

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Fri, 21 Apr 2017 18:12:27 CDT

Cisco Unified Communications Manager Denial of Service Vulnerability

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Fri, 21 Apr 2017 17:22:50 CDT

Cisco Integrated Management Controller Cross-Site Scripting Vulnerability

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Wed, 19 Apr 2017 16:00:00 CDT

Cisco ASA Software DNS Denial of Service Vulnerability

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Wed, 19 Apr 2017 16:00:00 CDT

Cisco Prime Network Registrar DNS Denial of Service Vulnerability

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