Distributed Computing MCQ

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Question 551 : What is common problem found in distributed system ?

  1. Process Synchronization
  2. Communication synchronization
  3. Deadlock problem
  4. Power failure
  

Question 552 : In distributed file system, _______ is mapping between logical and physical objects.

  1. client interfacing
  2. naming
  3. migration
  4. hetrogeneity
  

Question 553 : When will file system fragmentation occur?

  1. unused space or single file are not contiguous
  2. used space is not contiguous
  3. unused space is non-contiguous
  4. multiple files are non-contiguous
  

Question 554 : What is the advantage of caching in remote file access?

  1. Reduced network traffic by retaining recently accessed disk blocks
  2. Faster network access
  3. Copies of data creates backup automatically
  4. Copies of data resolves inconsistencies
  

Question 555 : What are the advantages of file replication ?

  1. Improves availability &performance
  2. Decreases performance
  3. They are consistent
  4. Improves speed
  

Question 556 : Which one of the following explains the sequential file access method?

  1. random access according to the given byte number
  2. read bytes one at a time, in order
  3. read/write sequentially by record
  4. read/write randomly by record
  

Question 557 : The sections of a program that need exclusive access to shared resources are referred as___________

  1. Critical sections
  2. deadlocks
  3. fairness
  4. starvation
  

Question 558 : Fault tolerance is a ______ requirement that requires a system to continue to operate,even in the presence of faults

  1. Non-functional
  2. Functional
  3. Concurrent
  4. Redundant
  

Question 559 : What are characteristic of Network Operating Systems?

  1. Users are aware of multiplicity of machines
  2. They are transparent
  3. They are coherent
  4. Users are unaware of multiplicity of machines
  

Question 560 : When the process issues an I/O request __________

  1. It is placed in an I/O queue
  2. It is placed in a waiting queue
  3. It is placed in the ready queue
  4. It is placed in the Job queue
  

Question 561 : The NFS client module caches the results of ------------------- operations in order to reduce the number of requests transmitted to servers.

  1. svmlink,rmdir, read and write
  2. rmdir,read,lookup and write
  3. read, write, getattr, lookup and readdir
  4. Lookup, getattr, readdir, and rmdir
  

Question 562 : A bully election algorithm:

  1. picks the first process to respond to an election request.
  2. relies on majority vote to pick the winning process.
  3. assigns the role of coordinator to the processs holding the token at the time of election.
  4. picks the process with the largest ID.
  

Question 563 : The server does not handle the request itself but passes it to a seprate thread is called ____.

  1. iterative server
  2. multi-threaded server
  3. concurrent server
  4. distributed server
  

Question 564 : The local operating system on the server machine passes the incoming packets to the ________.

  1. server stub
  2. client stub
  3. client operating system
  4. client process
  

Question 565 : Message queuing systems is design for __________

  1. transient communication
  2. synchronous communication
  3. tightly coupled communication
  4. loosely coupled communication
  

Question 566 : What are the characteristics of a distributed file system?

  1. Its users, servers and storage devices are dispersed
  2. Service activity is not carried out across the network
  3. They have single centralized data repository
  4. There are multiple dependent storage devices
  

Question 567 : With ................ only one process can execute at a time; meanwhile all other process are waiting for the processer. With .............. more than one process can be running simultaneously each on a different processer.

  1. Multiprocessing, Multiprogramming
  2. Multiprogramming, Uniprocessing
  3. CMultiprogramming, Multiprocessing
  4. Uniprogramming, Multiprocessing
  

Question 568 : MOM stands for?

  1. Message oriented middleware
  2. Mails oriented middleware
  3. Middleware of messages
  4. Main object middleware
  

Question 569 : For proper synchronization in distributed systems _____

  1. prevention from the deadlock is must
  2. prevention from the starvation is must
  3. prevention from the deadlock & starvation is must
  4. none of the mentioned
  

Question 570 : The ability of distributed system to hide the fact is known as?

  1. Openness
  2. Scalability
  3. transparency
  4. Homogeneity
  

Question 571 : Two types of subscriptions present for replication is _____________

  1. push and pull
  2. throw and pull
  3. push and throw
  4. Pull and throw
  

Question 572 : Which among below is not a technique commonly used for scaling in Distributed System

  1. Hiding Communication Latency
  2. Hide Performance
  3. Hide Distribution
  4. Hide Replication
  

Question 573 : A gateway for the server side object.

  1. skeleton
  2. stub
  3. remote
  4. server
  

Question 574 : Which event is concurrent with the vector clock (2, 8, 4)?

  1. (3, 9, 5)
  2. (3, 8, 4)
  3. (1, 7, 3) à
  4. (4, 8, 2)
  

Question 575 : The client stub is called by the __.

  1. server
  2. client
  3. host
  4. client and server
  

Question 576 : The Electronic mail system is a -

  1. Types of message Passing
  2. Types of communication
  3. Types of Internet
  4. Part of RPC
  

Question 577 : In case of good process migration mechanism, _____________ means failure of any node other than the one on which the process is running should not affect the execution of the process.

  1. Robustness
  2. Efficiency
  3. Transparent
  4. Interference
  

Question 578 : Google Distributed System is

  1. arbitrary system
  2. search engine is now a major player in cloud computing.
  3. GNS server
  4. computer networking standards
  

Question 579 : The local operating system on the server machine passes the incoming packets to the ___________

  1. Server stub
  2. Client stub
  3. Client operating system
  4. Client process
  

Question 580 : In HDFS, . ________ is the slave/worker node and holds the user data in the form of Data Blocks.

  1. DataNode
  2. NameNode
  3. Data block
  4. Replication
  

Question 581 : Which of the following is a disadvantage of replication?

  1. Reduced network traffic
  2. If the database fails at one site, a copy can be located at another site.
  3. Each site must have the same storage capacity.
  4. Each transaction may proceed without coordination across the network.
  

Question 582 : In which transmission mode data transfer is subject to maximum and minimum end to end delay

  1. Synchronous transmission mode
  2. Asynchronous transmission mode
  3. Isochronous transmission mode
  4. None of the above
  

Question 583 : Following is not Task Assignment Approach algorithms

  1. Graph Theoretic Deterministic Algorithm
  2. Centrilized Heuristic Algorithm
  3. Raymond's Algorithm
  4. Hierarchical Algorithm
  

Question 584 : Which file system implements the most stringent semantics of file sharing

  1. Unix Semantics
  2. Session Semantics
  3. Transaction Semantics
  4. Network Semantics
  

Question 585 : Which application-level protocol plays a crucial role in carrying out the data definition and manipulation in addition to X-500 features?

  1. TCP
  2. LDAP
  3. FTP
  4. UDP
  

Question 586 : In the Singhal's algorithm, each request is assigned _____ which determines its priority

  1. a globally unique timestamp
  2. an interrupt
  3. a counter
  4. a quartz crystal
  

Question 587 : Pretransfering also known as__

  1. Premigrating
  2. Precopying
  3. Prefiltering
  4. Postcopying
  

Question 588 : In the case of____________ , changes to an open file are only locally visible.

  1. session semantics
  2. immutable files
  3. atomic transactions
  4. Client Interfacing
  

Question 589 : The following is the desirable feature of global scheduling algorithm:

  1. Dynamic in nature
  2. Static by nature
  3. Cannot assure about actual nature
  4. Fix in nature
  

Question 590 : A client's clock reads 3:20:00. The server's clock reads 3:10:00 when they synchronize using Cristian's algorithm. Assume message delays are negligible. What is the time at the client after synchronization?

  1. 03:20:00
  2. 03:05:00
  3. 03:15:00
  4. 03:10:00
  

Question 591 : ____ defines the way in which the components of the system interact with each other & mapped onto an underlying network of component.

  1. Interaction model
  2. Fault model
  3. Architectural model
  4. Security model
  

Question 592 : What will happen in the single level directory?

  1. All files are contained in different directories all at the same level
  2. All files are contained in the same directory
  3. Depends on the operating system
  4. Depends on hardare
  

Question 593 : _________these policies are used in GFS to be highly available

  1. Fast Recovery , Chunk Replication
  2. Fast Recovery , Garbage Collection
  3. Master Replication , Data Integrity
  4. Master Replication , Garbage collection
  

Question 594 : In the case of____________ changes to an open file are only locally visible.

  1. Mutable Files
  2. Immutable Files
  3. Atomic Transactions
  4. Session Semantics
  

Question 595 : What are the different ways in which clients and servers are dispersed across machines ?

  1. Servers may not run on dedicated machines
  2. Servers and clients can be on same machines
  3. Distribution cannot be interposed between a OS and the file system
  4. OS cannot be distributed with the file system a part of that distribution
  

Question 596 : Lamport algorithm requires ____messages per Critical Section invocation and the synchronization delay in the algorithm is ___

  1. 3(N-1), T
  2. 3(N-1), 2T
  3. 3(N), T-1
  4. 3(N), 2(T-1)
  

Question 597 : A distributed database is which of the following?

  1. A single logical database that is spread to multiple locations and is interconnected by a network
  2. A loose collection of file that is spread to multiple locations and is interconnected by a network
  3. A single logical database that is limited to one location.
  4. A loose collection of file that is limited to one location.
  

Question 598 : In wound-wait If a young process wants a resource held by an old process, the young process will _____

  1. Killed
  2. Wait
  3. Preempt
  4. Restarts and wait
  

Question 599 : Internet provides _______ for remote login.

  1. telnet
  2. http
  3. ftp
  4. RPC
  

Question 600 : Which of the following is true about heterogeneous architecture?

  1. There is no mixed architecture style at one abstraction level
  2. Heterogeneous architecture implies increased time efficiency
  3. If the general structure of a system is connected using one architecture style, and each component can use a different one, this is one example of heterogeneous architecture
  4. Heterogeneous architecture implies decreased time efficiency