October 25, 2007
Computer Networks
Heya folks...!!!!
this links leads to the download of the file containing the questions for the fifth internal of Computer Networks
have fun and keep blogging!!!
October 23, 2007
Echo !!
"YOUR LIFE IS NOT A COINCIDENCE. IT'S A REFLECTION OF YOU!"
October 22, 2007
Keep Hugging..
--- Vinrginia Satir
Hugging is healthy. It helps the immune system, cures depression, reduces stress and induces sleep. Its invigorating, rejuvenating and has no unpleasant side effects. Hugging is nothing less than a miracle drug.Hugging is all natural.
It is organic, naturally sweet, no artificial ingredients, non-polluting, environmentally friendly and 100 percent wholesome.Hugging is the ideal gift. Great for any occasion, fun to give and receive, shows you care, comes with its own wrapping and, of course, fully returnable.Hugging is practically perfect. No batteries to wear out, inflation-proof, non-fattening, no monthly payments, theft-proof and nontaxable.
Hugging is an underutlized resource with magical powers. When we open our hearts and arms we encourage others to do the same.Think of the people in your life. Are there any words you would like to say? Are there any hugs you want to share? Are you waiting and hoping someone else will ask first?
Please dont wait! Initiate!
October 20, 2007
!!$$**Happy Dussehra**$$!!
The festival of Dussehra, also known as Vijayadashmi, is one of the fascinating festivals of India and is celebrated with joy and enthusiasm. According to the great Hindu scripture, the Ramayana, Lord Rama performed chandi-puja (holy prayer). This was carried out in order to invoke the blessings of Durga Maa for the killing of Ravana, the ten-headed demon king of Sri Lanka who had abducted Seeta, wife of Lord Rama.
Dussehra day is considered a most auspicious day. It is a time-honored belief that if any new venture is started on this day, it is bound to be successful. Hence, all the undertakings be it laying-in of foundation of a new building, opening of a new commercial establishment or even initiating a child into the world of learning- are started on this day. Also on this day implements of agriculture, manufacturer's machines, the intellectuals pens, the household articles, the children's school books are placed before the idol of Durga and worshiped.
October 18, 2007
In the realm of the relative nothing is what it seems
Two traveling angels stopped to spend the night in the home of a wealthy family.The family was rude and refused to let the angels stay in the mansion's guest room.
Instead the angels were given a small space in the cold basement. As they made their bed on the hard floor, the older angel saw a hole in the wall and repaired it. When the younger angel asked why, the older angel replied,"things aren't always what they seem."
The next night the pair came to rest at the house of a very poor, but very hospitable farmer and his wife. After sharing what little food they had the couple let the angels sleep in their bed where they could have a good night's rest. When the sun came up the next morning the angels found the farmer and his wife in tears. Their only cow, whose milk had been their sole income, lay dead in the field. The younger angel was infuriated and asked the older angel how could you have let this happen? The first man had everything, yet you helped him, he accused. The second family had little but was willing to share everything, and you let the cow die! "Things aren't always what they seem," the older angel replied.
"When we stayed in the basement of the mansion, I noticed there was gold stored in that hole in the wall. Since the owner was so obsessed with greed and unwilling to share his good fortune, I sealed the wall so he wouldn't find it. Then last night as we slept in the farmers' bed, the angel of death came for his wife. I gave him the cow instead; things aren't always what they seem."
Sometimes that is exactly what happens when things don't turn out the way you think they should. If you have faith, you just need to trust that every outcome is always to your advantage. You just might not know it until some time later...
October 14, 2007
Optical Communications -- Questions from Course file
2. What is a bit period?
3.Define bit error rate.
4. What are the typical error rates for optical fiber telecommunications systems?
5. What type of noise is produced due to pulse spreading?
6. Give some examples of spontaneous fluctuations.
7. Draw the Schematic diagram of a typical optical receiver.
8. Give the relationship between signal to noise and peak signal to rms noise.
9. Write the formula for probability error function.
10. Define threshold level.
11. Define extinction ratio.
12. What is the unit of thermal noise characteristic of a receiver?
13. Give the formula for thermal noise characteristic of a receiver.
14. Why low – impedance preamplifier are not used at long distance applications?
15. What is the advantage of Low – impedance preamplifier?
16. What are the draw backs of high – impedance preamplifier?
17. Write the thermal noise characteristic for high – impedance preamplifier.
18. What are the advantages of trans impedance amplifier?
19. Classify the preamplifiers used in optical fiber communication receivers?
20. What is the advantage of high – impedance preamplifier?
21. Which devices are used as preamplifiers for giga bits/sec. data rate?
22. How does noise in a high – impedance amplifier can be minimized?
23. What are the basic building blocks of digital receiver?
24. Draw the high – impedance preamplifier using BJT.
25. What is meant by wave length multiplexing?
26. What are the uses of WDM?
27. Draw a neat sketch showing a simplex point to point link.
28. What are the requirements in analyzing link?
29. What is the typical response time of a high speed silicon photodiode?
30. What is inter symbol interference?
31. Define noise margin.
32. Name the four elements which limit system speed.
33. Give the relationship between 3 –dB Bandwidth and full width half maximum rise time.
34. ___________ is used for determining the dispersion limitation of an optical fiber link.
35. The performance of digital receiver is in terms of _____________.
36. The performance of analog receiver is in terms of _____________.
37. In multimode fibers the rise time depends on _________________.
38. _________________ determines the power margin between the optical transmitter output and the minimum receiver sensitivity.
39. The most widely used compound for both pins and avalanche photodiode is________.
40. The cutoff wavelength is about _________ µm for Si and _______ µm for Ge.
41. The dispersion limit depends on ________________ and ____________ dispersion.
October 13, 2007
SATCOM 4th internal questions
· What are mac techniques ???
· What is tdma , cdma , fdma ???
· Define fixed assignment ??
· Define demand assignment ??
· B0o , B0i -> values & definitions , measurements ??
· (c/n)I , (c/n)v , (c/n)d equation ???
· Block diagram of NPR downlink transmitter earth station ??
· NPR values ??
· TDM & TDMA differences ??
· General properties of rx n tx ??
· GP is called as ________ ???
· CDMA application ???
· Technology used for spread spectrum transmission ????
· Explain digital date Tx wrt cdma ???
· SSB ???
· (s/n)d ???
· Cdma -> fixed assignment
· demand assignment- (i) distributed system (ii) centralised system {low cost,easy}
October 12, 2007
The Precious Gift of LOVE...
"Then you must hide this gift on the highest mountain peak on earth," said one of His counselors.
God shook His head, "No, for man is an adventuresome creature and he will soon enough learn to climb the highest mountain peaks."
"Hide it then, My Lord, in the depths of the earth."
"I think not," said God. "for man will one day discover that he can dig into the deepest parts of the earth."
"In the middle of the ocean then, God?"
God shook His head. "I've given man a brain, you see, and one day he'll learn to build ships and cross the mightiest oceans."
"Where then, My Lord?" cried His counselors.
God smiled, "I'll hide it where every man and woman will be able to find it if they look sincerely and deeply enough. I'll hide it in their heart, because that's the place where LOVE resides..."
Keep smiling,
October 10, 2007
Congrats..
CHAITU=1000
October 07, 2007
i dOnt knOw muCh pOEtry tO dEsCriBe ur bdAy....nOr dO i knOw gUd BiG wOrdZ tO tEll u wAt u neEd tO dO iN fuTUre.... i knOw jUs oNe thiNg....thAt is tO wiSh u haPpy liFe n dEn siNg.....
October 06, 2007
PERFECT PEACE
Many artists tried. The King looked at all the pictures, but there were only two he really liked and he had to choose between them.
One picture was of a calm lake. The lake was a perfect mirror for peaceful towering mountains were all around it. Overhead was a blue sky with fluffy white clouds. All who saw this picture thought that it was a perfect picture of peace.
The other picture had mountains too. But these were rugged and bare. Above was an angry sky from which rain fell, and in which lightening played. Down the side of the mountain tumbled a foaming waterfall.
This did not look peaceful at all.
But when the King looked, he saw behind the waterfall a tiny bush growing in a crack in the rock. In the bush a mother bird had built her nest. There, in the midst of the rush of angry water, sat the mother bird on her nest ..... perfect peace.
Which picture do you think won the prize?
The King chose the second picture. Do you know why?
"Because," explained the King, "peace does not mean to be in a place where there is no noise, trouble, or hard work. Peace means to be in the midst of all those things and still be calm in your heart. That is the real meaning of peace".
delight in the joys
That are little
Sometimes unexpected Too
And that bring
in sweet surprises
Delight in the life
That's so beautiful
Sending your way
Warm wishes on Ur Birthday.....
October 04, 2007
Of bridges and bhagwan..
Congrats..
October 03, 2007
October 02, 2007
There a very few men who require no introduction.
There are few days in calender which don't require any description.
n bAnnEdzOnE tEAm is proud to celebrate it's platinum jubilee day on this auspicious occasion.