What is a Virtual private Server (VPS)? What are its features? How can it help to improve the performance of your webpage? How is similar to a physical server and in what terms is it different? What is a cloud server? Is it the same as a VPS or is it different. If yes, please explain how it differs from a VPS.

We all know the very well known fact that majority of the IT companies prefer Cloud computing initiatives. But all of them are not very sure about the security issues involved in it. A recent survey says that the expenses of the security technologies will hike by 46 percent next year. Are Security, Cloud Computing and Analytics expensive for the IT companies?

A recent survey states that the CIOs and IT managers lack to understand the functionality which is required to manage the performance of their cloud. It also says that the IPM tools will help to improve their performance. Does CIO and IT managers have proper tools to manage cloud performance?

We all know the very well known fact that anyone in today’s business has to maintain most up to date protection with a simple to manage solution. Securing server environments is securing a bank from robbers. It is said that Sophos is coming with managed security service to protect cloud infrastructure. Does Sophos truly understand server security from malware and cyber attacks?

It is found that the Docker engine upto 1.3.1 version (including it) is vulnerable with flaws. It is said that it can lead to extracting files to paths. It is also stated that even remote code execution and privilege escalation can be performed. Is the up gradation is the only way to patch security hole or is there any remediation available for Docker’s older version.

It is said that a cloud infrastructure is being delivered by IBM’s SoftLayer business which includes Citrux Workspace Suite. This will help the global businesses to fine tune their mobile initiatives. This can be easily used by the companies to increase sales, marketing and employee productivity. Is Cloud based mobile analytics service provided by IBM?

What is the transaction processing system? What does a transaction server do? What components does the transaction server consist of? What are the features of a well defined TPS? What is an Online Transaction Processing System? How does an OLTP enhance the data integrity of the data being processed?

I have received a reminder from Apple regarding the payment for iCloud. Apple has asked me to make payment of £7.49 for 20 GB storage plan using my MasterCard. When I already have £96 Apple ID Balance then why is Apple asking me to pay with my MasterCard unnecessarily? Is iCloud billed with iTunes Store credit or MasterCard Credit Card?

What is the Open Systems Interconnection model? What is its relation to a communication Model? Mention the different layers in an OSI model? What is the relation between these layers? Which are the host layers and what do they do? How are they different from the Media Layers? Differentiate between Protocol Data Unit and Service data unit.

We all know that most of the data center giants prefer embracing renewable energy. Several companies like Google, Facebook and AWS build large data centers based on renewable energy. Even many companies invest only in datacenters with renewable energy? Do these datacenter giants prefer using renewable energy for PR or cost reduction?