I am not sure but I think that it is either the First option or the Third option but you would probably need more information.
The answer is a) It improves upon the two-phased commit by requiring that locks be acquired at the start of a transaction.
Reason: The 3PC is an extension or you can say developed from 2PC that avoids blocking of an operation. It just ensures that first n sites have intended to commit a transaction that means it acquires commits or locks before the start of any transaction to avoid any blocking.
Option b) is wrong as it does not allow coordination, it just let all the other sites do their transaction if any other site is blocked, so no coordination is there between sites that they will wait till their coordinator is corrected.
Option c) is wrong as lock operations are shared between other connections as when their coordinator fails, the new coordinator agrees to the old coordinator that they had shared locks before and they can start their transaction.
Option d) is wrong as option a) is correct.
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Mixed Reality expand on Augmented Reality option d: by enabling real-time interaction between real and virtual objects.
<h3>How does mixed reality expand on augmented reality?</h3>
Mixed reality is known to be one that is made up of both augmented reality and that of augmented virtuality.
Note that Mixed reality is one that acts so as to make an environment with interactive kinds of digital objects. Augmented reality needs a screen to be able to experience the augmented experience. Mixed reality is said to be experienced via the a headset.
Hence, Mixed Reality expand on Augmented Reality option d: by enabling real-time interaction between real and virtual objects.
Learn more about Augmented Reality from
brainly.com/question/9054673
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Answer:
1. 321 x 408 print (321 times 408)
Explanation:
It is multiplication, it will create a product. So that is why.
The physical devices that make up a computer system
