Sample Answer

a) Secure Data Transmission: VPN secures data at the packet level and therefore provides increased security when you are connected to a network. The data that you will send or receive is kept encrypted so it is not easy to hack.
b) Anonymity: VPN can help the user stay anonymous in the network and works better than hiding your IP addresses and proxy servers.
c) Increased Accessibility: VPN helps you access blocked or restricted information and is very popular in places where internet censorship and policies are used frequently.
d) Integrity Verification: VPN allows integrity where there is concern that someone will manipulate IP addresses. Integrity ensures to check that the packets have not been damaged, changed or recorded by hackers during the path from sender to receiver. Data encryption standard is the most commonly used encryption method in VPN.
e) Anti-Spoofing: VPN allows the developer to find and filter the data packets which are being duplicated and thereby helps prevent spoofing.

VI. Future of VPN technology
Future of VPN technology is appealing to the public due to decreases in the cost of long distance or leased lines, data security and privacy. IPSec VPN happens to be highly accepted and highly secured and is also currently the most popular VPN in use today.
A lot of corporates are debating whether to switch over to a VPN or if their networks are user friendly and if it would be worth the cost and expanding. Furthermore as VPNs are growing they are becoming more sophisticated, which increases the expenses for training new employees. The rising costs for data security will impact VPN technology and may hold back its progress if no new protocols are developed or if the existing protocols are strengthened.
Factorization techniques are getting faster as the processors are becoming much better over time. It is possible that in future the encryption techniques may be cracked much faster as well thereby rendering them useless. VPNs have a lot of importance in this matter.
With the increasing trend of mobile phones, cloud computing and the internet connectivity almost everywhere, with lots of private information shared across these platforms, security is a top priority. Virtual private network is one such security methods with SSL VPNs being the most popular ones at the moment. VPNs are evolving with time and becoming much better and more useful in day-to-day life.
The security needs for mobile phones are different compared to applications used in PC as they both have different architectures. Since the mobile phone applications use internet to download or communicate and since VPN secures the internet this becomes a perfect match for both PCs and mobile phones and there is no need to create additional security software, it just needs to be modified and tuned to work for mobile phones. However the mobile phones currently use VPN but they are old VPN protocols like SSL 2.0 or IPSec that were mainly built for computers. However with the rising reliance on smart phones there are possibilities to see new VPN protocols developed specifically and purely for mobile phones.
A lot of small businesses are opting for cloud services offered by the likes of Amazon and Google in place of VPNs. This is something that VPN companies should look for when catering to other businesses. Smaller businesses moving into cloud services will have a huge effect on VPN companies as VPN currently does not support cloud operating systems. To reverse the trend, some VPN companies are beginning to offer Cloud storage as a part of their VPN plans so that customers can get the best of both worlds. In addition, some VPN providers are also taking advantage of cloud and Peer-To-Peer technologies to offer Cloud and P2P based VPN services.
Cloud based VPNs helps multiple employees to unrestricted access to remote machines and tools and virtually control them from any where as well as check its status. Business owners can also restrict the VPN to only allow employees certain access. It also reduces cost of travelling and the benefits of being able to work from home is endless. Many companies are looking to adapt into cloud based VPN and services because of lower staff, hardware and setup costs. The staff does not need intensive training to be able to use the cloud based technology as its made simple for use.