Tag Archive: ccna

Basic CCNA Interview Questions AND Answers

What is Routing? Routing is the process of selecting best paths in a network and forward data from source to destination through it. Routing is usually performed by a dedicated device called a router. What is Protocol? A ‘protocol’ is…
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IP Addressing & Subnetting #

IP Address , IP Addressing :- An IP Address is a numeric identifier assigned to each Computer System. It identifies the location of the device in a network. Its a software address embedded in to a Network Interface Card (…
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Serial Connections and HDLC

Introduction we will discuss serial links and the physical connections we use. We will then explore the default encapsulation on CISCO routers which is HDLC and finally discuss how to troubleshoot a serial connection. How serial communications work When communicating…
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Rapid spanning tree (RSTP)

Rapid spanning tree is not a revolution of the original spanning tree but an evolution from it.Behind the scenes some things have been changed to speed up the process. In original STP we had 4 port-states.They are Blocking Listening Learning Forwarding In…
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CCNP: MST (Multiple Spanning Tree) Notes and configuration

In PVST,we need to have different calculations for each VLAN. This will be fine for less number of VLANS. But if we have 100’s of VLAN this is not easy.For such cases we use MST (Multiple Spanning Tree). In MST,Instead of calculating a spanning tree…
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The Value of Endpoint and Network Protection Together

As I’ve discussed in past blog posts, advanced malware and sophisticated attacks are relentless as they compromise environments using new and stealthy techniques. Modern malware is dynamic and exists in an interconnected ecosystem that is constantly in motion. It will…
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Understanding the Data Network Tutorial Example Network

The data network tutorial is based on an example enterprise data network that consists of a campus site and two remote sites. Figure shows the design of the example data network. Interfaces that do not have QoS applied to them…
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Cisco IT’s User Experience Playbook: Deliver a Consistent, Unified Experience

In my last blog, I introduced Cisco IT’s Playbook for Ensuring a Pervasive User Experience. We consider user experience (UX) a strategic priority that requires cultural change. The playbook is our guide for ensuring that this priority becomes part of…
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Partner with Cisco on Managed Services to quickly achieve new revenue streams

Virtualized Network Function (VNF), Virtualized Managed Services (VMS) and the transition to a software based infrastructure are poised to dramatically alter the way Service Providers build and maintain their networks . End users want value, innovative functionality, and reliability, and Service Providers…
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