Computer Distributed Computing (CDC) MCQ's




Question 481 :
If Task size is known,then the mapping is called

  1. Static Mapping
  2. Dynamic Mapping
  3. Array Mapping
  4. Processor Mapping
  

Question 482 :
Machine that places the request to access the data is generally called as _________.

  1. Server Machine
  2. Client Machine
  3. Request Machine
  4. Response Machine
  

Question 483 :
The__________ operation looks for a single part of a pathname in a given directory and returns the corresponding file handle and file attributes.

  1. svmlink
  2. rmdir
  3. Readlink
  4. Lookup
  

Question 484 :
What is interprocess communication?

  1. TRUE
  2. communication between two process
  3. communication within the process
  4. communication between two threads of same process
  

Question 485 :
Each process should get fair chance to execute the critical region, defines which property of mutual exclusion?

  1. Safety
  2. Liveness
  3. Fairness
  4. Scheduling
  

Question 486 :
What does MBR stand for?

  1. Main Buffer Register
  2. Memory Buffer Routine
  3. Main Buffer Routine
  4. Memory Buffer Register
  

Question 487 :
All transport-level communication services offer only

  1. Transient communication
  2. Intransient Communication
  3. Protocol
  4. Interfaces
  

Question 488 :
This is not feature of cooperative algorithm

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

Question 489 :
Amazon SQS is an example of _______.

  1. RPC
  2. RMI
  3. Group communication
  4. Message Queuing System
  

Question 490 :
The ______-is the capability to dynamically change the bindings between code fragments and the location where they are executed

  1. code mobility
  2. process mobility
  3. Thread mobility
  4. object mobility
  

Question 491 :
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 492 :
Which set of events is concurrent (all events are concurrent with each other)?

  1. (3, 1, 5, 7), (3, 2, 6, 7), (2, 1, 6, 8)
  2. (2, 1, 3, 4), (2, 2, 3, 3), (3, 3, 2, 5)
  3. (1, 2, 3, 4), (2, 3, 4, 5), (3, 4, 5, 6)
  4. (1, 5, 6, 7), (1, 4, 5, 7), (1, 3, 2, 2)
  

Question 493 :
Which of the following is not commonly used semantics for ordered delivery of multicast messages are:

  1. Absolute Ordering
  2. Consistent Ordering
  3. Casual
  4. Non- Casual
  

Question 494 :
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. Both measures the time of day.
  

Question 495 :
_____ is a process that prevents multiple threads or processes from accessing shared resources at the same time.

  1. Critical section
  2. Deadlock
  3. Message passing
  4. Mutual Exclusion
  

Question 496 :
This is not a Common mode of communication in Distributed system –

  1. RPC
  2. RMI
  3. Message passing
  4. Shared memory
  

Question 497 :
It Places replicas one by one each time exhaustively evaluating all possible locations.

  1. Greedy Approach for replica Management.
  2. Hotspot for replica Management.
  3. Sequential Replica Management
  4. Parallel Replica Management
  

Question 498 :
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. 0.138888889
  2. 0.128472222
  3. 0.135416667
  4. 0.131944444
  

Question 499 :
_________ is an object acting as a gateway for the client side.

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

Question 500 :
File accessing models in DFS mainly depends on i): Method used for accessing remote files ii)Unit of data access

  1. Only i
  2. Only ii
  3. Both i and ii
  4. Both i and ii are incorrect
  

Question 501 :
The characteristics of NFS protocol are i. Search for file within directory ii.Read a set of directory entries iii. Manipulate links and directories From given options, which one is true?

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

Question 502 :
Arbitrary failure may ouccur in form of

  1. duplicate message
  2. protocol
  3. reliable communication
  4. address spacde
  

Question 503 :
Which one of the following is not shared by threads?

  1. program counter
  2. stack register
  3. program counter and stack
  4. register
  

Question 504 :
Why is Lamports algorithm said to be fair?

  1. Time is determined by logical clocks
  2. Time is synchronized
  3. Timestamp ordering is deployed
  4. A request for Critical Section are executed in the order of their timestamps and time is determined by logical clocks.
  

Question 505 :
which Layer is not part of Grid Computing

  1. Fabric Layer
  2. Data link Layer
  3. Collective Layer
  4. Resource Layer
  

Question 506 :
A process that is based on IPC mechanism which executes on different systems and can communicate with other processes using message based communication, is called

  1. Local Procedure Call
  2. Inter Process Communication
  3. Remote procedure call
  4. Remote machine invocation
  

Question 507 :
_____ allows multiple computers with diverse hardware, operating system - network to solve complex problem

  1. Cluster computing
  2. Grid computing
  3. Centralized system
  4. Cluster and gri computing
  

Question 508 :
Single coordinator approach has the following advantages :

  1. Simple implementation
  2. Simple deadlock handling
  3. Bottleneck
  4. All of the mentioned
  

Question 509 :
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 510 :
________ primitive associates a local address with the newly-created socket.

  1. Bind
  2. Listen
  3. Send
  4. close
  
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