What are the characteristics of transaction semantics?

A. Suitable for applications that are concerned about coherence of data
B. The users of this model are interested in the atomicity property for their transaction
C. Easy to implement in a single processor system
D. Write-back enhances access performance

What are the characteristics of Unix semantics?

A. Easy to implement in a single processor system
B. Data cached on a per process basis using write through case control
C. Write-back enhances access performance
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

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 characteristic of NFS protocol?

A. Search for file within directory
B. Read a set of directory entries
C. Manipulate links and directories
D. All of the mentioned

What are the advantages of file replication?

A. Improves availability & performance
B. Decreases performance
C. They are consistent
D. Improves speed

Implementation of a stateless file server must not follow?

A. Idempotency requirement
B. Encryption of keys
C. File locking mechanism
D. Cache consistency

What are the characteristics of the stateless server?

A. Easier to implement
B. They are not fault-tolerant upon client or server failures
C. They store all information file server
D. They are redundant to keep data safe

What is a stateless file server?

A. It keeps tracks of states of different objects
B. It maintains internally no state information at all
C. It maintains some information in them
D. None of the mentioned

What are the characteristics of process migration?

A. Transfer data by entire file or immediate portion required
B. Transfer the computation rather than the data
C. Execute an entire process or parts of it at different sites
D. None of the mentioned