fifth semester b.e. degree dec.20l4l gomputer networks i …note: answer any fiw full ... explain...

USN Time: 3 hrs. ,l' 10cs55 Max. Marks:100 : ':',,,,, (04 Marks) (06 Marks) (04 Marks) (06 Marks) (10 Marks) (06 Marks) (04 Marks) *"'3'456,0 x ABCC, Fifth Semester B.E. Degree Bxamination, Dec.20l4l Jan.20l5 Gomputer Networks - I Note: Answer any FIW full qaestions, selecting atlesst TWO questionsfrom each part. la. b. c. () o d k a. d Cd CJ d c) ! 9?O ,Y\ - =r) oo ll troo .= 4., ioo sc) '{, q #:: odJ dd -o >r /G G4 o; =d -u g6 trd or! U-J /' .Y aL: !o 6.v >\ (F bo' qb0 o= :cl H,9 =o Y! U< -N o o z aB F o. 2a. b. '.'t'' ,,,' ,,,,, D A DT t .,'..,, ' "" ' ,, ,,, PART - A itl ,i i ,,,,, Whai'Aie the components of data conlmunication system? Explain in brlef (05 Marks) With a neal'$iagram, explain the interaction between layers in ttre OSI model. (10 Marks) What is the'dif:ference between a physical and logical address? Explain with example. :, ,lii. 'l ',,;,,, :: (05 Marks) Distinguish between low pass channel and a band pass channel. (06 Marks) A network with bandwidth of l0Mbps can pass only an average of I 8.000 frarnes per rninute with each frame carrying an average of 10,000 bits, What is the throughput of this network? Compare and contrast between PCM and DM. c. d. Explain polar biphase Manchesbi and'differential Manchester encoding schemes with example. ....' . t,.. .,:' 3 a. Explain following modulation teC'hniques: ,,, ,,i it Amplitudemodulation ii) Frequencymodulation. b. A multiplexer combines f.sui 1O0kbps channels uSingra time slot of 2 bits. Show the output with four arhitrary inputs. What is the frame rate? What is the frame duration? What is the bit rate? What is the'bit duration? (04 Marks) c. With relevant diagrams, explain the data transfer phase in a viitual circuit network. '' t' tt' ExplaindRC error detection method with an example. 4a. b. c. Explain the structure of encoder and decoder for a Hamming code. What is internet checksum? If a sender needs to send four data items 0 0'x 02BC and 0 x EEEE, answer the following: i) Find the checksum at sender site. ii) Find the checksum at receiver's site if there is no error. PART - B 5 a. Explain GO-BACK-N ARQ and selective-repeat-ARQ. List b. Explain the different frame types in HDLC. c. Write a short note on piggybacking. (10 Marks) the differences between them. (10 Marks) (06 Marks) (04 Marks) (10 Marks) (10 Marks) 6 a. With a flow diagram, explain the working of CSMA/CD. b. Explain the following channelizatrontechniques: i) TDMA it CDMA. I of2 www.bookspar.com | VTU NOTES | QUESTION PAPERS | NEWS | VTU RESULTS | FORUM | VTU BOOKSPAR APP www.bookspar.com | VTU NOTES | QUESTION PAPERS | NEWS | VTU RESULTS | FORUM | VTU BOOKSPAR APP

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Page 1: Fifth Semester B.E. Degree Dec.20l4l Gomputer Networks I …Note: Answer any FIW full ... Explain GO-BACK-N ARQ and selective-repeat-ARQ. List b. Explain the different frame types

USN

Time: 3 hrs.

,l'

10cs55

Max. Marks:100:

':',,,,,

(04 Marks)(06 Marks)

(04 Marks)

(06 Marks)

(10 Marks)

(06 Marks)(04 Marks)

*"'3'456,0 x ABCC,

Fifth Semester B.E. Degree Bxamination, Dec.20l4l Jan.20l5Gomputer Networks - I

Note: Answer any FIW full qaestions, selectingatlesst TWO questionsfrom each part.

la.b.

()

odka.d

dc)!

9?O

,Y\ -

=r)oo ll

troo.= 4.,

ioo

sc)

'{, q

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-o>r/GG4

o;=d-ug6trdor!U-J/' .Y

aL:

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2a.b.

'.'t'' ,,,' ,,,,, D A DT t .,'..,, ' ""' ,, ,,, PART - A itl ,i

i ,,,,,

Whai'Aie the components of data conlmunication system? Explain in brlef (05 Marks)With a neal'$iagram, explain the interaction between layers in ttre OSI model. (10 Marks)What is the'dif:ference between a physical and logical address? Explain with example.

:, ,lii. 'l ',,;,,, :: (05 Marks)

Distinguish between low pass channel and a band pass channel. (06 Marks)A network with bandwidth of l0Mbps can pass only an average of I 8.000 frarnes per rninutewith each frame carrying an average of 10,000 bits, What is the throughput of this network?

Compare and contrast between PCM and DM.c.

d. Explain polar biphase Manchesbi and'differential Manchester encoding schemes withexample.

....' . t,.. .,:'

3 a. Explain following modulation teC'hniques: ,,, ,,i

it Amplitudemodulationii) Frequencymodulation.

b. A multiplexer combines f.sui 1O0kbps channels uSingra time slot of 2 bits. Show the outputwith four arhitrary inputs. What is the frame rate? What is the frame duration? What is thebit rate? What is the'bit duration? (04 Marks)

c. With relevant diagrams, explain the data transfer phase in a viitual circuit network.

'' t' tt'

ExplaindRC error detection method with an example.4a.b.c.

Explain the structure of encoder and decoder for a Hamming code.What is internet checksum? If a sender needs to send four data items 0

0'x 02BC and 0 x EEEE, answer the following:i) Find the checksum at sender site.ii) Find the checksum at receiver's site if there is no error.

PART - B

5 a. Explain GO-BACK-N ARQ and selective-repeat-ARQ. List

b. Explain the different frame types in HDLC.c. Write a short note on piggybacking.

(10 Marks)

the differences between them.(10 Marks)(06 Marks)(04 Marks)

(10 Marks)(10 Marks)

6 a. With a flow diagram, explain the working of CSMA/CD.b. Explain the following channelizatrontechniques: i) TDMA it CDMA.