I used computers for 3 years now and i think its B
Respiratory system ?. Or esophagus?
Answer: Find out which starter makes your partner most interested in reading your story.
1. Start with action or dialogue.
2. Ask a question or set of questions.
3. Describe the setting so readers can imagine it.
4. Give background information that will interest readers.
5. Introduce yourself to readers in a surprising way.
Explanation:
Simply a glare screen, because it clearly states what it protects one against, I guess.
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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