Distributed Systems Mid - I, September - 2014

1.Which one is a client server protocol suitable for applications that operate in the client server mode and do not require real time notification of faults.
  • SNMP(Simple network management protocol)
  • CMIP( common management information protocol)
  • DME (distributed management environment)
  • None of the above
Answer: A
2.Necessary condition for deadlock to occur
  • Mutual inclusion
  • Circular wait
  • Pre-emption
  • All the above
Answer: B
3.In which model file data transfers across the network between a client and a server take place in units of file blocks.
  • File level transfer model
  • Block level transfer model
  • Byte level transfer model
  • Record level transfer model
Answer: B
4.________ is a special type of message that entitles its holder to use the shared medium for transmitting its messages.
  • Token
  • Packet
  • Frame
  • All the above
Answer: A
5.____________employees decentralized control of the shared medium which has equal status in the sense that there is no central controller site.
  • Slotted ring protocol
  • Token ring protocol
  • CSMA/CD protocol
  • None of the above
Answer: C
6._______ is a collection of independent computer linked by network and having distributed Software
  • Distributed System
  • Database System
  • Network System
  • none
Answer: A
7.Which of the following is a Election Algorithm
  • Ring algorithm
  • Centralized algorithm
  • Distributed algorithm
  • None
Answer: A
8.In Cristian’s Algorithm, the time server is
  • Direct
  • Passive
  • Distributed
  • None
Answer: B
9.Design issues of parameters passing in RPC
  • call by value
  • call by reference
  • A & B
  • None
Answer: C
10.To perform effectively peer to peer middle ware must also address the following non-functional Requirements.
  • Load balancing
  • cloud computing
  • Replication scheme
  • interaction between servers
Answer: A
11.____________ is a sub system of an operating system that performs file management activities.
Answer: File System
12.The simplified graph is also known as _____________.
Answer: Wait for graph
13.A shared memory system is said to support the ____________ model if the value returned by a read operation on a memory address is always the same as the value written by the most recent write operation to that address.
Answer: Strict consistency
14.______________ transparency means that a remote procedure call should have exactly the same syntax as a local procedure call.
Answer: Syntactic
15.The use of distributed computing systems by a group of users to work cooperatively is known as _______________.
Answer: Computer supported cooperative working (cscw)
16._____________ is implemented by filtering incoming and outgoing messages.
Answer: Firewall
17._______________ is an application of distributed multimedia technology.
Answer: Webcasting
18.The NTP service is provided by a network of servers located across the _____________.
Answer: Internet
19._______________ is a file service designed to provide an information sharing mechanism to its users.
Answer: Ambrew file system
20.The data stored in X.500 servers is organized in a _____________ structure with named nodes.
Answer: Tree