Operating System MCQs
1K+ questions with answers
Which layer lies between the transport layer and data link layer?
Which of the following is an application layer service?
What are design issues in distributed system structure?
In which OSI layer encryption and decryption happens?
What are the important steps followed when recovery from failure happens?
What are the different ways in which clients and servers are dispersed across machines?
What are not the characteristics of a DFS?
What are characteristic of a DFS?
What are the different ways file accesses take place?
Which is not a major component of a file system?
What are the different ways mounting of the file system?
What is networked virtual memory?
What are the examples of state information?
Which is not an example of state information?
What is a stateless file server?
What are the characteristics of the stateless server?
Implementation of a stateless file server must not follow?
What are the advantages of file replication?
What are characteristic of NFS protocol?
What is the coherency of replicated data?
What are the characteristics of Unix semantics?
What are the characteristics of transaction semantics?
What are non characteristics of session semantics?
The file once created can not be changed is called ___________
______ of the distributed file system are dispersed among various machines of distributed system.
_______ is not possible in distributed file system.
Which one of the following hides the location where in the network the file is stored?
In a distributed file system, when a file’s physical storage location changes ___________
In a distributed file system, _______ is mapping between logical and physical objects.
There is no need to establish and terminate a connection through open and close operation in ___________
In distributed file system, file name does not reveal the file’s ___________
Which one of the following is a distributed file system?
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
What are the characteristics of tightly coupled system? i) Different clock ii) Use communication links iii) Same clock iv) Distributed systems
What are the characteristics of mutual exclusion using centralized approach?
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
What are the advantages of token(with rings) passing approach? i) One processor as coordinator which handles all requests ii) No starvation if the ring is unidirectional iii) There are many messages passed per section entered if few users want to get in section iv) One processor as coordinator which handles all requests v) Only one message/entry if everyone wants to get in
What things are the transaction coordinator is responsible for?
Which of the following advantages follows the single coordinator approach?
Which of the following disadvantages follows the single coordinator approach?
What are the disadvantages of majority protocol?
What are the parts of a global unique identifier?
Which are the two complementary deadlock-prevention schemes using timestamps?
In distributed systems, a logical clock is associated with ______________
If timestamps of two events are same, then the events are ____________
If a process is executing in its critical section ____________
A process can enter into its critical section ____________
For proper synchronization in distributed systems ____________
In the token passing approach of distributed systems, processes are organized in a ring structure ____________
In case of failure, a new transaction coordinator can be elected by ____________