Distributed opererating system mcqs coordination
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What are the characteristics of tightly coupled system? i) Same clock, usually shared memory ii) Communication is via this shared memory iii) Multiprocessors iv) Different clock
i, ii and ii
ii and iii
i, iii and iv
Which are the two complementary deadlock-prevention schemes using timestamps?
The wait-die & wound-wait scheme
The wait-n-watch scheme
The wound-wait scheme
The wait-wound & wound-wait scheme
What are the characteristics of fully distributed approach? i) When responses are received from all processes, then process can enter its Critical Section ii) When process exits its critical section, the process sends reply messages to all its deferred requests. iii) It requires request,reply and release per critical section entry iv) One processor as coordinator which handles all requests
i and ii
ii and iii
iii and iv
What are the characteristics of atomicity?
All operations associated are executed to completion or none are performed
One processor as coordinator which handles all requests
When responses are received from all processes, then the process can enter its Critical Section
Use communication links
What are the disadvantages of majority protocol?
Deadlock cannot occur easily
All of the mentioned
There are 5 questions to complete.