Computer Distributed Computing (CDC) MCQ's




Question 901 :
The directory can be viewed as a _________ that translates file names into their directory entries.

  1. symbol table
  2. partition
  3. swap space
  4. cache
  

Question 902 :
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
  

Question 903 :
In Cristian algorithm the time sever is ____

  1. Passive
  2. Active
  3. Some internal passive some interval active
  4. None of the mentioned
  

Question 904 :
A client gets a timestamp of 4:12:30.500 from a time server. The elapsed time between the request and response was 20 msec (0.020 sec). The current time on the client is 4:12:30.510. Using Cristian’s algorithm, what is the time set to on the client?

  1. 0.175347222
  2. 0.175347222
  3. 0.17537037
  4. 0.17537037
  

Question 905 :
An RMI Server is responsible for _______

  1. All mentioned above
  2. Creating an instance of the remote object
  3. Exporting the remote object
  4. Binding the instance of the remote object to the RMI registry
  

Question 906 :
Which policy used in load balancing algorithm

  1. standard policy
  2. variant policy
  3. location policy
  4. random policy
  

Question 907 :
The variable that assures updates to a datastore are propagated to all local copies is ______.

  1. Release
  2. Acquire
  3. Read
  4. Write
  

Question 908 :
A semaphore is a shared integer variable that can not

  1. drop below zero
  2. be more than zero
  3. drop below one
  4. that cannot be more than one
  

Question 909 :
A 'glue' between client and server parts of application

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

Question 910 :
A client's clock reads 3:20:00. The server's clock reads 3:10:00 when they synchronize using the Berkeley algorithm. Assume message delays are negligible. What is the time at the client after synchronization?

  1. 0.135416667
  2. 0.177083333
  3. 0.21875
  4. 0.260416667
  

Question 911 :
RPC stands for

  1. Remote process communication
  2. Remote Procedure Call
  3. Reliable Process communication
  4. Reliable Procedure communication
  

Question 912 :
The Resource Reservation Protocol is __________________ layer protocol designed to reserver resources in Distributed Computing.

  1. Transport Layer
  2. Network Layer
  3. Interface Layer
  4. Internet Layer
  

Question 913 :
Multithreading is also called as ____________

  1. Concurrency
  2. Simultaneity
  3. Crosscurrent
  4. Recurrent
  

Question 914 :
OSI has ___ layers.

  1. 4
  2. 5
  3. 6
  4. 7
  

Question 915 :
DNS stands for?

  1. Domain Network System
  2. Domain name System
  3. Direct Network System
  4. Direct Name System
  

Question 916 :
The response time is short since process migration is not required in ______

  1. Workstation model
  2. Workstation -server model
  3. Processor-pool model
  4. Client-server model
  

Question 917 :
Which mutual exclusion algorithm works when the membership of the group is unknown?

  1. Centralized.
  2. Ricart-Agrawala.
  3. Lamport.
  4. Token Ring.
  

Question 918 :
In __________ critical section requests are executed in the increasing order of timestamps i.e a request with smaller timestamp will be given permission to execute critical section first than a request with larger timestamp.

  1. Cristian’s algorithm
  2. Berkeley algorithm
  3. Lamport algorithm
  4. Election algorithm
  

Question 919 :
In tokens, the primary function of the sequence number is _____

  1. to decide the priority
  2. to decide the sequence of processes
  3. to distinguish between low priority and high priority requests
  4. to distinguish between old and current requests
  

Question 920 :
__________ mounts, is when a file system can be mounted over another file system, that is remotely mounted, not local.

  1. recursive
  2. cascading
  3. trivial
  4. non recursive
  

Question 921 :
Difference in precision between a prefect reference clock and a physical clock is known as________

  1. Clock drift rate
  2. Drift
  3. Skew
  4. Clock synchronization
  

Question 922 :
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 923 :
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 924 :
According to the ring algorithm, links between processes are _____

  1. Bidirectional
  2. Unidirectional
  3. Both bidirectional and unidirectional
  4. omnidirectional
  

Question 925 :
Which is not a characteristic in Distributed Operating System

  1. Enabling Interprocess communication
  2. Uniform process management
  3. Local control management
  4. Different kernel implementation
  

Question 926 :
Message passing system allows processes to __________

  1. communicate with one another without resorting to shared dat
  2. communicate with one another by resorting to shared data
  3. share data
  4. name the recipient or sender of the message
  

Question 927 :
Absolute time ordering of all shared accesses matters in

  1. Sequential Consistency
  2. Casual Consistency
  3. Strict Consistency
  4. Weak Consistency
  

Question 928 :
If a and b are two events within the same process and a occurs before b, then clock of a is always _______then clock of b

  1. lesser
  2. greater
  3. equal
  4. Cant say
  

Question 929 :
Berkeley socket is used for ____

  1. connection-less communication
  2. connection-oriented communication
  3. group communication
  4. Causal communication
  

Question 930 :
File Replication is done to _____

  1. increase complexity
  2. increase cost
  3. increase reliability
  4. increase data
  
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