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Posted Date: 15 Dec 2008 Posted By: Balaji T R Member Level: Gold
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2008 Anna University B.E Electronic Instrumentation and Control Computer networks and distributed control systems Question paper
PART A-(10*2=20 marks)
1. Name the layers of OSI model.
2. Differentiate between a service and a protocol?
3. What are gateways?
4. State the need of an Ethernet in DCS?
5. Name the various hierarchical levels of Distributed control systems?
6. What are the various normal condition displays in DCS?
7. What is a supervisor control system?
8. What are the various types of interfacing techniques in DCS?
9. Where is field bus used?
10. List any four salient features of HART protocol.
PART B-(5*16=80 marks)
11. (a)
(i) Explain in detail various layers of the TCP/IP reference model.
(ii) Compare the OSI and TCP/IP reference models.
(OR)
(b)
(i) Explain any one data link protocol.
(ii) Discuss on command and token passing.
12. (a) Discuss on various internet control protocols.
(OR)
(b)
(i) Discuss on the following:
1. Fragmentation
2. Internet work routing
3. Tunneling
(ii) Discuss on the top 10 principles mandatory for protocol designers.
13. (a)
(i) With a neat sketch explain the architecture of DCS with hierarchical levels.
(ii) Discuss on the communication options in the DCS.
(OR)
(b)
(i) Compare distributed vs centralized control system.
(ii) Explain the functional requirements of distributed control system.
14. (a) Discuss on low level and high operator interfaces in DCS.
(OR)
(b) Discuss on low level and high level operator interfaces in DCS.
15. (a) (i) Discuss on various field bus topologies of field bus.
(ii) Discuss in detail about the benefits of field bus.
(OR)
(b) (i) Explain the HART communication protocol.
(ii) Compare HART and OSI model.
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