MidTerm Exam
Question 1 Cloud computing is open space where you can place all our music and videos at one place. We can listen to the music, play video games and watch videos from anywhere and not necessarily connect to the computer. So, after turning off computer we can listen to music and watch videos through other device.
Question 2
(c)
Maintenance: First of all, you do not have to spend more money on the high ended hardware devices to store and retrieve your data. All the hardware and software would be handled by the cloud providers and you need not worry about setting up new hardware or installing/upgrading software’s. Moreover I have read in an article that the applications installed in the cloud are multitenant in nature which means that the same is shared by all the customers thus the setup and maintenance costs are all distributed among the customers which narrowly cuts down all the maintenance/support costs.
Security:
If we …show more content…
Safety essentially says consensus not violated which means two process does not end up deciding with different values. Where liveness says that process decides a value. Paxos works in round wise. Here each round consist three phases. The first phase is election phase where the leader is elected, the second phase is build phase in which leader proposes a value and other process acknowledges this value and finally third phase is law phase where the leader finalizes the value . For instance process might fail and the majority not include in this case when the process restart it uses log to retrieve the last decided value and continue with the protocol. when leader crashes the other process wait for timeout then other process makes itself as a leader and try to coordinate transaction. Here the problem occur when two leaders proposes different value then paxos assigns orders to the leaders to distinguish current and older
Question 1 Cloud computing is open space where you can place all our music and videos at one place. We can listen to the music, play video games and watch videos from anywhere and not necessarily connect to the computer. So, after turning off computer we can listen to music and watch videos through other device.
Question 2
(c)
Maintenance: First of all, you do not have to spend more money on the high ended hardware devices to store and retrieve your data. All the hardware and software would be handled by the cloud providers and you need not worry about setting up new hardware or installing/upgrading software’s. Moreover I have read in an article that the applications installed in the cloud are multitenant in nature which means that the same is shared by all the customers thus the setup and maintenance costs are all distributed among the customers which narrowly cuts down all the maintenance/support costs.
Security:
If we …show more content…
Safety essentially says consensus not violated which means two process does not end up deciding with different values. Where liveness says that process decides a value. Paxos works in round wise. Here each round consist three phases. The first phase is election phase where the leader is elected, the second phase is build phase in which leader proposes a value and other process acknowledges this value and finally third phase is law phase where the leader finalizes the value . For instance process might fail and the majority not include in this case when the process restart it uses log to retrieve the last decided value and continue with the protocol. when leader crashes the other process wait for timeout then other process makes itself as a leader and try to coordinate transaction. Here the problem occur when two leaders proposes different value then paxos assigns orders to the leaders to distinguish current and older