Question 1

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

Accepted Answer

A) True 
 B)False  True

Question 2

Type of grid computing is

Accepted Answer

A)  collaborative grid
B)  system grid
C)  process grid
D)  channel grid A

Question 3

What is close group in group communication?

Accepted Answer

A)  only members can send messages to the group as a whole
B)  processes that are not members (clients)  can send message to the group.
C)  the idea of groups is to support replicated servers
D)  processes that are not members (clients)  but close to the group can send message to the group. A

Question 4

If processes p and q both receive messages m and m', then p receives m before m' if and only if q receives m before m'.The order delivery is called

Accepted Answer

A)  absolute ordering
B)  consistent ordering
C)  causal ordering
D)  fifo ordering

Question 5

In RMI, the objects are passed by .

Accepted Answer

A)  value
B)  reference
C)  value and reference
D)  object

Question 6

---------------- is an object acting as a gateway for the client side.

Accepted Answer

A)  skeleton
B)  stub
C)  remote
D)  server

Question 7

Transient communication done by layer

Accepted Answer

A)  network
B)  transport
C)  physical
D)  session

Question 8

Distributed pervasive system is also known as

Accepted Answer

A)  ubiquitous computing
B)  user interface design
C)  graphical user interface
D)  peer to peer system

Question 9

Scaling transparency hides

Accepted Answer

A)  system expansion
B)  system collaboration
C)  system failure
D)  system security

Question 10

Which of the following allocates/deallocates buffers

Accepted Answer

A)  rrl
B)  stub/skeleton layer
C)  transport layer
D)  networking layer

Question 11

The hardware of DS has two types

Accepted Answer

A)  multiprocessor system,multicomputer system
B)  multiprocessor system,unicomputer system
C)  uniprocessor system,multicomputer system
D)  uniprocessor system,unicomputer system

Question 12

Type of cluster computing is

Accepted Answer

A)  load sharing cluster
B)  load holding cluster
C)  load replication cluster
D)  load balancing cluster

Question 13

Which address is used to identify a process on a host by the transport layer?

Accepted Answer

A)  physical address
B)  logical address
C)  port address
D)  specific address

Question 14

The local operating system on the server machine passes the incoming packets to the

Accepted Answer

A)  server stub
B)  client stub
C)  client operating system
D)  binding agent

Question 15

A "glue" between client and server parts of application

Accepted Answer

A)  middleware
B)  firmware
C)  package
D)  system software

Question 16

An architecture where clients first communicate the server for data then format and display it to the users, is known as

Accepted Answer

A)  client/server architecture
B)  three-tier architecture
C)  two-tier architecture
D)  peer-to-peer architecture

Question 17

The header usually consists of the following elements in IPC
I. Sequence number
II. Structural information
III. Address
IV. File mode(Read/ Write)

Accepted Answer

A)  i,iii, iv
B)  i,ii, iii
C)  i, ii, iv
D)  i,iv

Question 18

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

Accepted Answer

A)  malformedurlexception
B)  notfoundexception
C)  arithmeticexception
D)  class•not•found•excepti on

Question 19

Message passing provides a mechanism to allow processes to communicate and to synchronize their actions

Accepted Answer

A)  by sharing the same address space
B)  without sharing the same address space
C)  by sharing the same process number and process identifier
D)  by sharing port number

Question 20

---------------------provides programmers a familiar programming model by extending the local procedure call to a distributed environment

Accepted Answer

A)  distributed environment
B)  permanent procedure call
C)  process and file
D)  remote procedure call

Exam 1: Distributed Systems and Communication Protocols