Complete Question:
Fill in the missing step in the following deadlock situation. Two users from the local board of education are each running a program (P1 and P2), and both programs will eventually need two DVD drives to copy files from one disc to another. Only two DVD-R drives are available and they’re allocated on an “as requested” basis. Soon the following sequence transpires:
1. P1 requests drive 1 and gets it.
2. ____
3. P1 requests drive 2 but is blocked.
4. P2 requests drive 1 but is blocked.
a.P1 requests drive 2.
b.P2 requests drive 2 and gets it.
c.P2 requests drive 1 but is blocked.
d.P1 releases drive 1.
Answer:
Soon the following sequence transpires:
P2 requests drive 2 and gets it.
Explanation:
A deadlock is a condition where two computer programs allocate the same resource essentially prevent access by each other and both programs stop working.
When every process or thread is awaiting for a resource to be released which is managed by another process a number of processes or themes are blocked.
Here is an example of a deadlock scenario. All connections are blocked; everybody hopes to see an incident that never takes place.
You can access various sites on WWW by using hyperlinks or by?
Answer is: A following directions on-screen
It would be D, I feel hurt when you ignore me at meetings.
Answer:
D. keep your hand and forearm in the same plane
Explanation:
The ergonomic principle explains how to maintain a good posture. And if hands and forearms are in the same plane then you will do least work, and hence not loss more energy, which you can lose if your elbows are close together while typing or your hand and forearm is not in the same plane, or your hands are crossed, or your neck is non aligned to your spines. And if you want to work more efficiently in your office, then you should study ergonomic principles certainly.
Um.. Where the Answer Choices