# Placement Papers - Hughes

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### Hughes Placement Paper (Aptitude)

Posted By : Muthu Selvam Rating : +10, -0

Hughes Paper (Aptitude)

Aptitude Questions

1. Age problem

2. Time and distance

3. Coin

4. direction problem

5. (2n + 2 n-1/2 n+1 ? 2n) what is gives if n = something

6. ( 10n ?1) n>1 when is divisible by 11.no divisible by 8

7. find the missing no. when it is divisible by some no

8. Boat problem

9. Average

Technical Questions

10. Which one is called family tree

12. DHCP protocol

13. order of insertion and Heap sort

14. left recursion

15. find output: for(l=1;a<=l;a++)
cout<<++a; cout <
16. DEBUG trigger (oracle)

17. In unrestricted session which system privilege mode is used (oracle)

18. NEXTVAL and CURRENTVAL in sequence (Oracle)

19. Unix system call ??like Var( )

20. OS 384 support which memory management

21. Complexity to access name from the given double link list

22. Which WAN network is suitable for the 100Km or m. distance network

23. If duplicate segments , file are there in hardisk which is best for management
a) FAT
b) SAT

24. stop n wait protocol is associated with which layer

25. find errors from the c and c++ codes.

26. 3 qns on operating systems. I qn on dijkestra algorithm

27. Using which pin it s possible to address 16 bit addresses even though there re only 8 address bits in 8085? Ans: ALE

28. Voltage gain for an amplifier is 100 while it is operating at 10 volts. What is the O/P voltage wen i/p is 1 volt

29. Quality factor indicates a) Quality of inductor b) quality of capacitor c) both

30. Qns related to bridges, routers and generators, which OSI layer they corresspond to. (Refer to stevens 4th chapter)

31. OPAmp s I/P ciurrent, O/p current and CMRR is given, what is the voltage gain

32. 2-3 qns on scope of static variables in C. Qn to view o/p odf a C static var

33. Qn to print a value of a pointer

34. OPAmp s I/P ciurrent, O/p current and CMRR is given, what is the voltage gain

35. A qn to find the physical address from a given virtual address, virtual to physical address table was provided

36. 6 bit mantissa and 8 bit exponent can present what maximum value?

37. 4 bit window size in sliding window protocol, how many acknowledements can be held?

38. Security functionality is provided by which layer of OSI

39. Frequency spectrums for AM, FM and PM (figure given, u veto tell which Kind of modulation it belongs to)

40. Among AM and FM which is better and why?

41. LASt stage of TTL NAND gate is called: Ans: Totem Pole Amplifie

42. SR to JK flip flop conversion. Ans: S=JQ , R=KQ

43. LSB of a shift register is connected to its MSB, what is formed: Ans: RING Counter

44. 2-3 Qns based on Demorgan s laws (identiies: (A+b) = A b , etc)

45. 2 qns on Logic gates (O/p of logic gates)

46. Diff in IRET and RET statements of 8086

47. How many address bytes are required to address an array of memory chips (4 * 6), each chip having 4 memory bits and 8k registers.

48. Diff. in memory mapped and I/P O/P mapped Input/Output (Refer a book on Microprocessor)

49. Qn on pipeline architecture

50. QN on LAPB protocol