Distributed Computing University questions 2011

Answer ALL questions.
1. What are the disadvantages of distributed systems?
2. Differentiate between tightly coupled and loosely coupled systems.
3. What is predicate addressing?
4. What do you mean by server crashes and client crashes?
5. What is Synchronization?
6. Explain remote access model.
7. Discuss Fault Tolerance Issues.
8. Write a note on Concurrency Control.
9. What is a query in Distributed DBMS? Explain.
10. What is call by reference? Give an example.
PART B — (4 ? 10 = 40 marks)

KINEMATICS OF MACHINERY

KINEMATICS OF MACHINERY                                                                         3  1  0 4

OBJECTIVE

·          To understand the concept of machines, mechanisms and related terminologies.

·          To analyse a mechanism for displacement, velocity and acceleration at any point in a moving link

·          To understand the theory of gears, gear trains and cams

·          To understand the role of friction in drives and brakes.

UNIT I             BASICS OF MECHANISMS                                                             7(L) Definitions – Link, Kinematic pair, Kinematic chain, Mechanism, and Machine. -Degree of  Freedom  –  Mobility  -  Kutzbach  criterion  (Gruebler’s  equation)  -Grashoff's  law- Kinematic Inversions of four-bar chain and slider crank chain - Mechanical Advantage- Transmission angle.

Description  of  common  Mechanisms  -  Offset  slider  mechanism  as  quick  return mechanisms, Pantograph, Straight line generators (Peaucellier and Watt mechanisms), Steering  gear  for  automobile,  Hooke’s  joint,  Toggle   mechanism,   Ratchets   and escapements - Indexing Mechanisms.

UNIT II            KINEMATIC ANALYSIS                                                            10(L)+5(T)

Analysis  of   simple   mechanisms  (Single   slider  crank   mechanism  and  four  bar mechanism) - Graphical Methods for displacement, velocity and acceleration; Shaping machine mechanism - Coincident points – Coriolis acceleration - Analytical method of analysis of slider crank mechanism and four bar mechanism.   Approximate analytical expression for displacement, velocity and acceleration of piston of reciprocating engine mechanism.

UNIT III           KINEMATICS OF CAMS 

DISTRIBUTED COMPUTING Question paper I

_{16 marks:}

_{1. Write a short note on}

   _{(I) Nested transactions and locks}

   _{(II) Explain concurrency control in Distributed Transactions}

_{2. (I) describe the time stamp ordering technique for transactions.}

   _{(II) Explain the two phases commit protocol for nested transactions.}

_{3. (I) Explain the Distributed dead locks in detail.}

    _{(II) Explain the Optimistic concurrency in Distributed Transactions.}

_{4. Explain any one algorithm for Mutual Exclusions and Election algorithm.}

_{2 Marks:}

_{1.      Define the terms, “Physical clocks and logical clocks”.}

_{2.      List out issues of Multicasting Communication.}

_{3.      What is ACID?}

_{4.      List the functions of a recovery manager for transactions.}

_{5.      Write a note on Time Stamp Ordering with an example.}

_{6.      What is concurrency control?}

DISTRIBUTED COMPUTING Question paper

CONTINIOUS INTERNAL ASSESSMENT TEST – I

VII SEM – B.E. (CSE)

DISTRIBUTED COMPUTING

TIME: 90 MINUTES                                                MAX.MARKS: 50

DATE OF EXAM:                                                    SESSION:   .N.     

PART A (Answer All Questions)                                    07 X 2 = 14

1.      What is distributed systems? Give various examples of Distributed Systems.

2.      Write Short notes about :1.Types of Networks, 2. Internet protocols.

3.      Explain about CORBA

4.      Difference between buffering and caching?

5.      Define data marshalling

6.      Define distributed objects?

7.      Explain about ISP?

PART B (Answer All Questions)                       3 X 12 = 36

8. Write short notes on:

                (I).Resource Sharing                                       (II).DNS

9. Define distributed system. Explain the characteristics of a distributed system.

10. What are the implementations issues of RPC?