Deck 1: Distributed Systems and Communication Protocols

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.

Answer 1

True

Question 2

A "glue" between client and server parts of application

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

Answer 2

middleware

Question 3

The hardware of DS has two types

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

Answer 3

multiprocessor system,multicomputer system

Question 4

Process Fail - Stop in process omission faults

A)can be detected in synchronous system.
B)can be detected in asynchronous system.
C)can be detected in synchronous and asynchronous system.
D)can be detected in standalone system.

Question 5

Distributed pervasive system is also known as

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

Question 6

Type of cluster computing is

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

Question 7

Type of grid computing is

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

Question 8

Scaling transparency hides

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

Question 9

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

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

Question 10

In RMI, the objects are passed by .

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

Question 11

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

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

Question 12

Transient communication done by layer

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

Question 13

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

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

Question 14

Machine that places the request to access the data is generally called as .

A)server machine
B)client machine
C)request machine
D)database server

Question 15

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

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

Question 16

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

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

Question 17

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

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

Question 18

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

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 19

Which of the following allocates/deallocates buffers

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

Question 20

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

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

Question 21

In all reliable multicast group communication              

A)n\ response expected from the receiver
B)response from any of the receiver required
C)response from \m \(1D)response needed from all the receivers

Question 22

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

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

Question 23

What is close group in group communication?

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.