Assmt-2 (Quiz)

What is the primary objective of the Byzantine Agreement problem in distributed systems?

• Ensuring high availability

• Achieving fault tolerance

• Synchronizing system clocks

• Balancing network traffic

In which one of the following does each process has an initial value, and all the correct processes

must agree upon a set of values, with one value for each process

• Byzantine agreement problem

• Consensus problem

• Interactive consistency problem

• None of these

How many round does consensus algorithm for crash failures (synchronous system) have if the maximum number of crash failures tolerated is ' f ' and number of processes is 'n' ?

• 'f ' rounds

• 'f+1' rounds

• 'n' rounds

• 'n-1' rounds

"Client programs should be unaware of the distribution of files.

A single set of operations is provided for local and remote files". Which one of following transparency does this description matches?

• Access transparency

• Location transparency

• Mobility transparency

• Performance transparency

_______ provides a mapping between text names for

files and their UFIDs

• Directory service

• Flat file service

• Client module

• Application program

__________ are used to refer to files in all requests

for flat file service operations

• File names

• i-node number

• Unique file identifiers (UFIDs)

• Sequence number

What is the process called through which a client gains access to a remote NFS directory?

• Sharing

• Linking

• Binding

• Mounting

Which one of the following NFS server operations does not return a file handle?

• lookup( )

• create( )

• read( )

• mkdir( )

______ is used for communication between NFS client and server

• RPC

• RMI

• Shared Memory

• None of these

In Andrew File System _____ implements the flat file service

• Vice

• Venus

• UNIX kernel

• None of these