Computer Distributed Computing (CDC) MCQ's




Question 541 :
A distributed system is defined as a collection of autonomous computers linked by a network with software designed to produce an integrated computing facility.

  1. TRUE
  2. FALSE
  

Question 542 :
Which of the following are the types of Path names?

  1. absolute - relative
  2. local - global
  3. global - relative
  4. relative - local
  

Question 543 :
RPC works between two processes. These processes must be ___________.

  1. Only on the same computer
  2. Only on different computers connected with a network
  3. on the same computer and also on different computers connected with a network
  4. on none of the computers
  

Question 544 :
How can we avoid deadlock

  1. Resource Allocation must be done at once
  2. there must be a fixed number of resources to allocate
  3. all deadlock process must be aborted
  4. inversion technique can be used
  

Question 545 :
Suspending, migrating all resources as well as process and then resuming is known as ______.

  1. Total Freezing
  2. Pre Transferring
  3. On demand Exchange
  4. On demand migration
  

Question 546 :
The portion of the process scheduler in an operating system that dispatches processes is concerned with ____________

  1. assigning ready processes to CPU
  2. assigning ready processes to waiting queue
  3. assigning running processes to blocked queue
  4. assigning new processes to cpu
  

Question 547 :
What are the characteristics of process migr

  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. execute an entire process or parts of it at same site
  

Question 548 :
This model is similar to processor consistency model with an additional restriction of memory coherence.

  1. strict consistency
  2. PRAM consistency
  3. causal consistency
  4. FIFO consistency
  

Question 549 :
_____ implies that the user need not be aware whether the resource is in volatile memory or on the disk.

  1. Relocation Transparency
  2. Location Transparency
  3. Migration Transparency
  4. Persistence Transparency
  

Question 550 :
Which system call returns the process identifier of a terminated child?

  1. wait
  2. exit
  3. fork
  4. get
  

Question 551 :
The remote method invocation [RMI] _______.

  1. allows a process to invoke memory on a remote object
  2. allows a thread to invoke a remote object
  3. allows a thread to invoke memory on a remote object
  4. allows a process to invoke a method on a remote object
  

Question 552 :
Preemptive Shortest Job First scheduling is sometimes called ___

  1. Fast SJF scheduling
  2. EDF scheduling – Earliest Deadline First
  3. HRRN scheduling – Highest Response Ratio Next
  4. SRTN scheduling – Shortest Remaining Time Next
  

Question 553 :
Identify the distributed file system among the options.

  1. Andrew file system
  2. EXT
  3. FAT32
  4. FAT
  

Question 554 :
Which one of the following is not true about NFS?

  1. Server- client Based Architecture
  2. Clientand Server Caching
  3. End users do not interact
  4. No Replication
  

Question 555 :
MOM stands for?

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

Question 556 :
How does the Quorum-based mutual exclusion algorithm reduce the message complexity of invoking mutual exclusion

  1. By having sites broadcast the request to all other sites
  2. By having sites broadcast the request to a central coordinator
  3. By having sites ask permission to a higher priority site
  4. By having sites ask permission from only a subset of sites.
  

Question 557 :
Synchronization tool is?

  1. thread
  2. pipe
  3. semaphore
  4. socket
  

Question 558 :
Message passing provides a mechanism to allow processes to communicate and to synchronize their actions ________

  1. By sharing the same address space
  2. without sharing the same address space
  3. by sharing the same Process Identifier
  4. by sharing the same process number
  

Question 559 :
HDFS works in a __________ fashion.

  1. master-master
  2. master-slave
  3. slave-slave
  4. None of the above
  

Question 560 :
What is the characteristic of Naming and Name resolution?

  1. Name system in the network.
  2. Address messages with the process-id
  3. Virtual Circuit
  4. Message Switching
  

Question 561 :
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 562 :
Which of the following is/are the desirable features of global scheduling algorithm. i) Process tharshing must be prevented ii)Heuristic method used for decision making iii) Prior knowledge about the processes required

  1. i and iii only
  2. ii and iii only
  3. i and ii only
  4. All i, ii and iii
  

Question 563 :
_________is often used for Web caches

  1. Numerical deviation
  2. Staleness deviation
  3. Ordering deviation
  4. Time deviation
  

Question 564 :
Distributed Mutual Exclusion Algorithm does not use

  1. Coordinator process
  2. Token
  3. Logical clock for event ordering
  4. Request and Reply messages
  

Question 565 :
Which is the approach for naming the files i)Files are named with a combination of host and local name.ii)Remote directories are mounted to local directories iii)A single global name structure spans all the files in the system

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

Question 566 :
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 567 :
A server changes from the correct flow of control______.

  1. Crash Failure
  2. Byzantine failure
  3. Response Failure
  4. Timing Failure
  

Question 568 :
The application layer packet is encapsulated in a

  1. TCP or UDP packet
  2. IP packet
  3. Presentation packet
  4. data link layer
  

Question 569 :
which of the service offered by middleware is allows to share - access the resources Concurrently?

  1. Querying service
  2. Persistance service
  3. Concurrency service
  4. Naming service
  

Question 570 :
Berkely’s and Christian’s clock synchronization methods are type of _______.

  1. Logical clock synchronization method
  2. Physical clock Synchronization method
  3. Scalar clock synchronization method
  4. Vector clock synchronization method
  
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