Cloud Computing
Explanation:
1.Cloud computing allows employees to be more flexible in their work practices. For example, you have the ability to access data from home, on holiday, or via the commute to and from work (providing you have an internet connection).
2.Network capabilities are extended without requiring investment in new infrastructure, personnel, or software. Technology is integrated into every-day appliances allowing them to interconnect with other devices, making them more 'smart' or automated.
3.Cloud computing benefits
- Efficiency / cost reduction. By using cloud infrastructure, you don't have to spend huge amounts of money on purchasing and maintaing equipment.
4.Cloud environments promise several benefits such as reduced expenses and simplicity to ser- vice providers and service requesters [Foster et al. ... 2010], trust management and security are ranked among the top 10 obstacles for adopting cloud computing
Answer: D)It relies on two independent proofs of identity.
Explanation: Two factor authentication is technique which uses two steps/stage for the verification or authentication.It is done for the extra security maintenance.IT is also known as 2FA. It consist of two different authentication component so that it penetrates through double protection layer .
Other options are incorrect because It RSA public key cannot be used for the authentication of private content. It does not use both hand geometry at same time for both the levels and It does not utilize only single sign-on technology. Thus, the correct option is option(D).
Answer:
Deny
Explanation:
Under the New Technology System, the Deny permission is applied when the administrator wants to overrule the permission given to members of a group. The Allow and Deny options help in regulating access to the components of the system. Only authorized groups are granted access to the files.
Most times, the Deny permission is considered before the Allow permission. If the user is denied access to some files and granted access to some, the deny permission is most times considered first.
Answer:

Explanation:
Given
--- starting index
Required
Change the starting index to 
We have:

To change the starting index to k, we simply rewrite as:

<em>In this case; k=1; so, the starting index will be: </em>
<em />
Answer:
phone !!
Explanation:
since it's a mobile app, that would apply to a handheld device !!
i hope this helps !!