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21. Which of the following is a universal gate?
(a) OR (b) AND (c) XOR (d) NOR
22. The default back end of the VB is
(a) Oracle (b) Sybase (c) Informics
23. What is meant by Superconductivity?
Ans: No reistance 24. Viscosity
25. What is the Lock Based Protocol used for? Ans: Concurrency Control in DBMS.
Directions for question 25 to 32: Convert the decimal numbers on the left to the required form.
25. 9's complement of 28 Ans:71
26. Binary of 58 Ans: 111010.
27. Octal of 359 Ans: 547
28. Hexadecimal of 650 Ans: 28A
29. BCD of 18 Ans: 0001 1000
30. BCD of 34.8 Ans: 0011 0100.1000
31. Excess-3 code of 6 Ans: 1001
32. Excess-3 code of 9 Ans: 1100
33. If Ax + By = 1F16; Cx + Dy = 2510. Find the value of x and y?
34. Semaphore is used for
(a) Synchronization (b) Dead-lock avoidence (c) box (d) none
35. For addressing 1 MB memory, the number of address lines required,
(a) 11 (b) 16 (c) 22 (d) 24
36. Which of the following remains in memory temporarily
(a) Resident portion of COMMAND.COM (b) Transient portion of COMMAND.COM (c) API (d) Disk BIOS
37. Pick the odd man out
(a) IO.SYS (b) MSDOS.SYS (c) ROM-BIOS (d) COMMAND.COM
38. OS/2 is a (a) Single User OS (b) Multi User OS (c) Multi Tasking OS (d) None of these
39. Bootstrap loader program is a program belonging to (a) ROM startup software (b) ROM extension software (c) ROM BIOS software (d) ROM Basic software
40. The entry of starting cluster of a file is present in
(a) Boot Parameters (b) Directory (c) FAT (d) Partition Table and master boot program
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