How to Improve EIGRP Convergence time

To  improve EIGRP convergence time, you can work and manipulate with Feasible Successors, EIGRP Query process, Load balancing etc. I will go through each of them shortly, just to give you hint what parts of the EIGRP can be touched to improve convergence.

By having Feasible Successors all the time
You can have situations, wehre you don't have Feasible successor Routes. An alternate Route to desired destination may present but EIGRP has simply rejected because its Reported Distance (RD) is greater than Feasible Distance (FD) in order to avoid potential loops.

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What are different Cisco IOS CLI Modes

User EXEC 
Denoted by ">" or Router>

User EXEC commands allow you to connect to remote devices, change terminal settings on a temporary basis, perform basic tests, and list system information. The EXEC commands available at the user level are a subset of those available at the privileged level.

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Difference Between access-group and access-class Commands in ACLs

access-class

access-class command is used to bind Access Control Lists ACLs to the Router/Switches' management Lines, e.g. telnet, SSH, Aux etc. There management lines are connections that terminate on Routers or Switches

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How to view/open Shared Folder in VMWare Guest Host

You have shared the folder in your main operating system  and now want to open/view it from VMWare Guest operating system, here is how you can access it quickly

Just type \\vmware-host in the address bar of folder window and press enter as shown below; The main Vmware Shared window will be opened, and by opening it all the folders that you share in your operating system can be accessed in your guest operating system from here. 

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Types of Layer 2/Switch Security Attacks, and Mitigation steps in Brief

Security Attacks against Switches or at Layer 2 can be grouped in four major Categories as follows:

1. MAC layer attacks
2. VLAN attacks
3. Spoofing attacks
4. Attacks on switch devices

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