OS Distributed File Systems
Implementation of a stateless file server must not follow?
Idempotency requirement
Encryption of keys
File locking mechanism
Cache consistency
Encryption of keys
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There is no need to establish and terminate a connection through open and close operation in ___________A. stateless file service
B. stateful file service
C. both stateless and stateful file service
D. none of the mentioned
Header are ______ when data packet moves from upper to the lower layers?
A. Modified
B. Removed
C. Added
D. All of the mentioned
According to the ring algorithm, links between processes are ____________
A. bidirectional
B. unidirectional
C. both bidirectional and unidirectional
D. none of the mentioned
What are the disadvantages of majority protocol?
A. Complicated implementation
B. Deadlock cannot occur easily
C. Bottleneck
D. All of the mentioned
Which routing technique is used in a distributed system?
A. fixed routing
B. virtual routing
C. dynamic routing
D. all of the mentioned
What is the coherency of replicated data?
A. All replicas are identical at all times
B. Replicas are perceived as identical only at some points in time
C. Users always read the most recent data in the replicas
D. All of the mentioned
What are the three popular semantic modes?
A. Unix, Coherent & Session semantics
B. Unix, Transaction & Session semantics
C. Coherent, Transaction & Session semantics
D. Session, Coherent semantics
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