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?}