Tuesday 20 November 2012

oct/nov-2011


BOARD DIPLOMA EXAMINATION, (C-09)
OCT /NOV-2011
DECE.-VI SEMESTER EXAMINATION
DCCN

TIME: 3 Hours]                                                                     [Total Marks :100]
PART   - A
INSTRUCTION:  (1) ANSWER ALL QUESTION AND EACH QUESTION
                                           CARRIES 4 MARKS
                    (2)  ANSWER SHOULD BE BRIEF AND   STRAIGHT      TO  THE POINT AND SHALL NOT EXEED FIVE SIMPLE SENTENCES

1.     Define data communication?
2.     Differentiate anaog and digital transmission.
3.     State the need for protocols in computer networks
4.     List the OSI 7 layers.
5.     Write the applications of WAP.
6.     Explain the point to point protocol.
7.     What is the role of Gateways?
8.     What is web application
9.     Briefly explain the remote login process.


Instructions :    (1) Answer any five questions and each question carries 12 marks.                  (2) The answers should be comprehensive and the criteria for valuation   is the content but not the length of the answer.


10.   Explain about baud, rate, simplex, half duplex and full duplex communication.
11.   Explain Shannon’s capacity and compare the characteristics of various guided media?
12.   (a) distinguish between circuit switching and packet switching. (b) explain the working of token ring network.
13.   (a)discuss cut through, store and forward and adaptive switch mechanism. (b)explain the Bluetooth technology.
14.   (a) explain about ARPANET and WWW. (b) explain the internal architecture of ISP
15.   (a) what are the various layers of TCP/IP? (b)explain how the TCP connects various systems
16.   (a) explain the purpose of proxy server. (b) explain the FTP in web application in detail
17.   (a) describe the working of web browser. (b) explain the DNS name space






·         MARCH /APRIL-2009
·         OCT/NOV-2011
·         APRIL/MAY-2012
·         OCT/NOV-2012

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signals are continuous in nature.