A company runs across multiple locations and would like to set up a Virtual Private Network between too many branches. With reference to the statement explain what is a VPN? How can the above scenario be achieved? What are the benefits of such a network being created?What is a VPN concentrator ?

What is grid computing and how do you learn the ropes? How do they connect computers together in order to get grid computing? What is the minimum hardware requirement for building a grid computing system and is there a limit to the number of people who can connect to the grid in order to use the facilities available?

What are data centers and how do they operate?

What expertise goes into managing data centers across the world? Are there particular guidelines for every data centre to follow regardless of which country is hosting the data centre? If I want to build a data center what things must I consider carefully before embarking on such a monumental project?

I need a very comprehensive tutorial on High Performance Computing. Where can I get extensive resource on HPC? Could you please provide some links for me to access these resources? What in your opinion is the best course of action for me to take to improve upon my skills in dealing with problems requiring the use of HPC?

 

I need help to get started with this technology. I want to learn Cisco networking and I need you to point me in the right direction. There are hundreds of tutorials on this subject but no two tutorials are ever the same. Some are more effective than others. Could you please tell me where I need to go to find the most effective and understandable tutorial on Cisco networking? What advice do you have for a new student of Cisco networking?

What is a stub network? What is the objective of configuring a stub network? How does a Stub Network link with the internet? How is it different from a LAN? With reference to a stub network explain what is an OSPF? How does an OSPF decide a network to be stub? What is a stub autonomous system?

What does the acronym DHCP stand for? Describe how the DHCP works? What is the purpose of using DHCP? How does it help to eliminate manual intervention for keeping track of IP address? How does DHCP help to eliminate the issue of an IP conflict caused by a static IP address?

What is Network Address Translation? What purpose is it used for? How does it improve the security of a Network? What is IP Masquerading? How is it used in conjunction with NAT? What is the difference between static Nat and Dynamic NAT? What is Overloading in NAT? How does it work ?

What is a Internet Protocol Version 6 address (IPv6 address)? How is it different from an IPv4 address? What are the benefits of IPv6 addressing? What are the different IPv6 classes? What is their difference in functioning? What is an IPv6 address scope? How are IPv6 addresses denoted? What is Mobile IPv6? What is its need?

I bought Samsung Smart TV a few months back, it was working perfectly fine, but then it does not recognize my home WiFi, it even fails to detect any WiFi connection! Most shocking thing is it is not showing its own WiFi's SSID. What should I do to resolve the issue? Is there any master reset?