Computer Distributed Computing (CDC) MCQ's




Question 511 :
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 512 :
The type of communication where a message is stored by the communication system only as long as the sending and receiving application are executing.

  1. Transient communication
  2. Persistent communication
  3. Synchronous communication
  4. Asynchronous communication
  

Question 513 :
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 514 :
In RMI, the objects are passed by _____.

  1. Value
  2. Reference
  3. Value and Reference
  4. object
  

Question 515 :
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 516 :
Which one of the following hides the location where in the network the file is stored?

  1. transparent distributed file system
  2. hidden distributed file system
  3. escaped distribution file system
  4. spy distributed file system
  

Question 517 :
The consistency model which do not handle simultaneous updates-

  1. data centric model
  2. Client centric model
  3. server centric model
  4. traffic centric model
  

Question 518 :
NOS stands for

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

Question 519 :
For each critical section (CS) execution, Ricart-Agrawala algorithm requires ___________ messages per CS execution and the Synchronization delay in the algorithm is ____________.

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

Question 520 :
What are the exceptions which have to be handled in a RMI client program?

  1. MalFormedURLException
  2. NotFoundException
  3. ArithmeticException
  4. Class-Not-Found-Excepti on
  

Question 521 :
Which of the following is disadvantage of NFS

  1. Easy to share if files are available on multiple machines
  2. Network slower than local disk
  3. Easier to administer server than client
  4. Access way more data that fits on your local disk
  

Question 522 :
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 523 :
The following is the desirable feature of global scheduling algorithm

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

Question 524 :
Which are the two complementary deadlock-prevention schemes using time stamps ?

  1. The wait-die - wound-wait scheme
  2. The wait-n-watch scheme
  3. The wound-wait scheme
  4. The wait-wound - wound-wait scheme
  

Question 525 :
For which file transfer model, cache management is harder due to the variable-length data for different access requests.

  1. File-level transfer model
  2. Block-level transfer model
  3. Byte-level transfer model
  4. Record-level transfer model
  

Question 526 :
The network Time protocol (NTP) which is widely used for clock synchronization on the Internet uses the ___________ method. The design of NTP invloves a ________ of time servers.

  1. Differential Delay, Binary tree
  2. Offset delay estimation, Hierarchical tree
  3. NTP time stamps, Quorum
  4. Physical clock delay, hierarchical tree
  

Question 527 :
Google is a _______based corporation

  1. Japan
  2. US
  3. Rasia
  4. UK
  

Question 528 :
One process is elected as coordinator, which selects another process to perform the operation.

  1. Hierarchical Group
  2. flat group
  3. IETF group
  4. Collected process Group
  

Question 529 :
Optimistic logging protocols need to keep track of

  1. Independencies
  2. Checking points
  3. Dependencies
  4. Erroneous state
  

Question 530 :
Which among the following is not performed be RPC Runtime

  1. Retransmission
  2. Routing
  3. Marshalling
  4. Encryption
  

Question 531 :
TCP is reliable _______ protocol which supports reliable point to point communication in distributed system.

  1. network
  2. transport
  3. communication
  4. system
  

Question 532 :
With multiprogramming ______ is used productively.

  1. time
  2. space
  3. money
  4. ready
  

Question 533 :
In Suzuki Kasami algorithm, the time required for a requesting site to enter the CS is _____

  1. Infinite
  2. finite
  3. zero
  4. unpredictable
  

Question 534 :
Election message is always sent to the process with _______

  1. Lower numbers
  2. Waiting processes
  3. Higher numbers
  4. Requesting Lower number of resources
  

Question 535 :
Remote service model for file accessing has

  1. Reduced contention for the network
  2. Reduced network traffic
  3. Client’s request is performed at the server’s node
  4. No contention for the file servers
  

Question 536 :
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 537 :
Maekawa's algorithm doesn’t require ____ to handle deadlocks

  1. FAILED message
  2. INQUIRE message
  3. PRIORITY message
  4. YIELD message
  

Question 538 :
The difference between logical and physical clocks ?

  1. Logical clocks measure the time of day and Physical clocks are used to mark relationships among events in a distributed system.
  2. Both are the same
  3. Physical clocks measure the time of day and Logical clocks are used to mark relationships among events in a distributed system.
  4. None of the mentioned
  

Question 539 :
Which of the following algorithm is Token Based Algorithm for Mutual Exclusion

  1. Lamport Algorithm
  2. Bully Algorithm
  3. Ricart–Agrawala‘s Algorithm
  4. Raymond‘s Tree based Algorithm
  

Question 540 :
In distributed file system, _______ is mapping between logical and physical objects.

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