Distributed Computing MCQ

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Question 101 : Absolute time synchronization can be achieved using

  1. Vector time stamping method
  2. Christian’s method
  3. Lamport’s method
  4. Ricart-Agrawala algorithm
  

Question 102 : Amoeba is belongs to which unit data transfer model used for file accessing in DFS

  1. File Level Transfer Mode
  2. Byte Level Transfer Model
  3. Record Level Transfer Model
  4. Block Level Transfer Model
  

Question 103 : A class of message-oriented middleware services, generally known as -

  1. Message Passing System
  2. Message Binding System
  3. Message Queuing Systems
  4. Call By References System
  

Question 104 : The distributed global directory works through a __________________ and one or more central places that manage many directories.

  1. registration process
  2. saccession process
  3. application process
  4. distribution process
  

Question 105 : Which of the following is not a pipeline stage

  1. Operand fetch
  2. Execute
  3. Pipeline Flush
  4. Memory access
  

Question 106 : ________ consistency is that write operations by the same process are performed in the correct order everywhere.

  1. Weak
  2. Strict
  3. Eventual
  4. FIFO
  

Question 107 : map and reduce are____

  1. libraries
  2. functions
  3. file system
  4. OS
  

Question 108 : What are characteristics of process migration ?

  1. transfer data by entire file or immediate portion required
  2. transfer the computation rather than the data
  3. execute an entire process or parts of it at different sites
  4. Acees is done like local resources
  

Question 109 : Brain of computer is ____________

  1. Control unit
  2. Arithmetic and Logic unit
  3. Central Processing Unit
  4. Memory
  

Question 110 : This is not feature of cooperative algorithm

  1. complex
  2. larger overhead
  3. worst stability
  4. better stability
  

Question 111 : UTC stands for

  1. Unique Cordinated Time
  2. Unique Time Coordination
  3. Universal Total Coordination
  4. Universal Coordinated Time
  

Question 112 : What is the advantage of a vector clock over Lamport's logical clock?

  1. Catch causality
  2. avoid deadlock
  3. avoid linear relationship
  4. set nonlinear relationship
  

Question 113 : In distributed systems, ______ offers services according to standard rules that describe the syntax and semantics of those services.

  1. openness
  2. scalability
  3. Reliability
  4. fault tolerance
  

Question 114 : The transparency that enables multiple instances of resources to be used, is called ____ transparency

  1. Concurrency
  2. Performance
  3. Scaling
  4. Replication
  

Question 115 : To improve performance, many distributed systems

  1. combine check pointing with recovery oriented computing
  2. combine check pointing with message logging
  3. combine check pointing with distributed commit
  4. combine distributed commit with message logging.
  

Question 116 : In _____ distributed system the client and server both should be actively participated in the communication process

  1. Parvasive
  2. Asynchronous
  3. Synchronous
  4. Middleware
  

Question 117 : Increased service load handled by capability of system is known as-

  1. Capacity
  2. Scalability
  3. Tolerance
  4. Expansion
  

Question 118 : The degree of tolerance of update dependancy and state read is defined as________.

  1. Concurrency
  2. Consistency
  3. Availability
  4. Isolation
  

Question 119 : Tasks are scheduled to improve -------in task assignement approach

  1. concurrecy
  2. performance
  3. reliability
  4. replication
  

Question 120 : 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 121 : A classes of failure that can occur in RPC systems, as :

  1. The server crashes after receiving a request And Client Cannot Locate the Server
  2. Client Cannot Locate the Server
  3. The server crashes after receiving a request.
  4. Server crashes
  

Question 122 : to locate and retrieve the contents of the web and pass the content onto the indexing subsystem. Performed by a software called

  1. Googlebot.
  2. Gobot.
  3. bot.
  4. lebot.
  

Question 123 : Serializability is the term, used in ______ characteristic of distributed system

  1. scalability
  2. concurrency
  3. fault tolerance
  4. openness
  

Question 124 : A monitor is a module and monitor which of the following can encapsulates

  1. shared data structures
  2. procedures that operate on shared data structure
  3. synchronization between concurrent procedure invocation
  4. all of the mentioned
  

Question 125 : Transient communication done by_____ layer

  1. Network
  2. Transport
  3. Physical
  4. Session
  

Question 126 : The current directory contains, most of the files that are _____________

  1. of current interest to the user
  2. stored currently in the system
  3. not used in the system
  4. not of current interest to the system
  

Question 127 : Which one is NOT a part of the sets of services underlying the Google Search Engine

  1. Crawling
  2. Testing
  3. Ranking
  4. Indexing
  

Question 128 : When a group can mask any k concurrent member failures,it is saidto be k-fault tolerant.

  1. k is called max limit of fault tolerance.
  2. k is called degree of fault tolerance.
  3. k is called tolerance threshold
  4. k is called fault tolerance constant.
  

Question 129 : A process can enter into its critical section ____________

  1. anytime
  2. when it receives a reply message from its parent process
  3. when it receives a reply message from all other processes in the system
  4. all the time
  

Question 130 : Distributed multimedia system uses which type of transmission mode?

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

Question 131 : RPC is used to _________

  1. establish a server on remote machine that can respond to queries
  2. retrieve information by calling a query
  3. establish a server on remote machine that can respond to queries and retrieve information by calling a query
  4. to secure the client
  

Question 132 : Communication layer is forced to deliver incoming messages from the same process in the same order as they have sent is called as____________.

  1. Unoredered multicast
  2. FIFO ordered multicast
  3. Casually ordered multicast
  4. Totally ordered multicasts
  

Question 133 : ____________ files are read only.

  1. Mutable
  2. Immutable
  3. Setup
  4. Recursive
  

Question 134 : In the distributed system, the goal of the task assignment approach is to assign the tasks of a process to the nodes. Consider there are two nodes n1 and n2 and four tasks {T1, T2, T3, T4,T5,T6}. Tasks T1 are assigned to node n1 and tasks T2,T3,T4, T5, T6 are assigned to node n2.Comunication cost is as given in table below. Considering serial task assignment, the communication incur will be T1, T2, T3, T4,T5,T6 T1-> 0, 6, 4, 0, 0, 12 T2-> 6, 0, 8, 12, 3, 0 T3-> 4, 8, 0, 0, 11, 0 T4=> 0, 12, 0, 0, 5, 0 T5-> 0, 3, 11, 5 , 0, 0 T6=> 12, 0, 0, 0, 0, 0

  1. 38
  2. 22
  3. 39
  4. 50
  

Question 135 : A “glue” between client and server parts of application

  1. Middleware
  2. Firmware
  3. Package
  4. System Software
  

Question 136 : PRAM means _________________________________

  1. Process Random-Access Memory Consistency Model
  2. Pipelined Random-Access Memory Consistency Model
  3. Pipelined Readonly-Access Memory Consistency Model
  4. Pipelined Random-Access Matrix Consistency Model
  

Question 137 : The Bankers algorithm is used ______

  1. to prevent deadlock
  2. to rectify deadlock
  3. to detect deadlock
  4. to solve deadlock
  

Question 138 : NOS stands for

  1. Network Operating System
  2. New Operating System
  3. Netmask operating system
  4. Name server Operating system
  

Question 139 : What will happen when a process terminates?

  1. It is removed from all queues
  2. It is removed from all, but the job queue
  3. Its process control block is de-allocated
  4. Its process control block is never de-allocated
  

Question 140 : Grid computing is type of -

  1. Distributed embedded system
  2. Distributed information system
  3. Distributed Computing system
  4. Cluster computing
  

Question 141 : Which is not the way to organize servers?

  1. Iterative server
  2. Concurrent server
  3. Active server
  4. Multi-threaded serve
  

Question 142 : 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

  1. i
  2. ii and iii
  3. i, ii and iii
  4. i, ii and iv
  

Question 143 : The data consistency models in the descending order of their strictness in consistency are _____.

  1. Linearizability, Sequential, Casual, FIFO
  2. FIFO,Casual,Sequential,Linearizability
  3. Casual,Sequential,Linearizability,FIFO
  4. Sequential,Casual,FIFO,Linearizability
  

Question 144 : A process is already split into pieces, called________________.

  1. Tasks
  2. Program
  3. Processors
  4. Routines
  

Question 145 : Basis for communication in middleware based operating system is________.

  1. Files
  2. Model specific
  3. Messages
  4. Shared memory
  

Question 146 : A process is selected from the ______ queue by the ________ scheduler, to be executed.

  1. blocked, short term
  2. wait, long term
  3. ready, short term
  4. ready, long term
  

Question 147 : ISO OSI Model is invented by

  1. Zimmerman
  2. Dennis Richie
  3. Lamport
  4. Zippy
  

Question 148 : A process can enter into its critical section _______

  1. anytime
  2. when it receives a reply message from its parent process
  3. when it receives a reply message from all other processes in the system
  4. when it receives a reply message from its child process
  

Question 149 : OSI stands for __________

  1. open system interconnection
  2. operating system interface
  3. optical service implementation
  4. open service Internet
  

Question 150 : A remote object is -------- of a class that implements a remote interface.

  1. function
  2. call
  3. method
  4. instance