VOCLET 2013 COMPUTER part answer

VOCLET 2013 question and answer. Examination was held on 5/5/2013 (SUNDAY).

VOCLET 2013 COMPUTER PART ANSWER KEY
1. When computer is turned on, a special type of Loader program is executed and called as: a) Boot Strap Loader b) Booting Loader c) Compile & Go Loader d) Startup Loader Answer : a) Boot Strap Loader	2.Which is a semiconductor memory: a) Dynamic RAM b) Static RAM c) Bubble Memory d) Both a and b Answer : d) Both a and b
3. Which topology is used in Ethernet LAN: a) Star b) Bus c) Ring d) Mesh Answer : a) Star	4. The program which is as permanent as hardware and stored in ROM is known as : a) Hardware b) Software c) Firmware d) Freeware Answer : c) Firmware
5. E2PROM is a _________ memory: a) Volatile b) Flash c) Non-volatile d) Magnetic Answer : b) Flash	6. Which unit is capable to differentiate between data and program (code) : a) Input b) Output c) Memory d) CPU Answer : d) CPU
7. To return the remainder after a number is divided by a divisor in excel we use the function : a) ROUND() b) FACT() c) DIV() d) MOD() Answer : d) MOD()	8. E-mail address separate the user name from the ISP using the symbol : a) & b) @ c) # d) . Answer : b) @
9. 127 can be : a) Decimal Number b) Hexadecimal Number c) OCtal Number d) All of the above Answer : d) All of the above	10. The transmission in address bus is : a) Uni-directional b) Bi-directional c) Buffered d) None of the above Answer : a) Uni-directional
11. No. of address lines in a ROM of dimension 8K x 8 is : a) 8 b) 16 c) 13 d) 6 Answer :b) 16 Explanation: 8K= 8 x 1024 =23 x 210=213. 8K x 8= 213 x 23=216. Number of address lines=16 (the power of 2)	12. 11011 in grey code in equivalent to binary : a) 10010 b) 10110 c) 00100 d) 10001 Answer : a) 10010 Explanation: Binary= 10010. In greay code= 1,(1+0=1),(0+0=0),(0+1=1),(1+0=1), that means 11011 is the gray code of binary 10010
13. What range of decimal values can be represented by a 15 bit binary number : a) 0-511 b) 0-65535 c) 0-32767 d) None of the above Answer : c) 0-32767 Explanation: Upper range of decimal values= 215 - 1=32767	14. The maximum and minimum number in 1 8 bit 2's complement system is : a) 127 and -127 b) 128 and -128 c) 128 and -127 d) 127 and -128 Answer : d) 127 and -128
15. The internal network of an organization is : a) Internet b) LAN c) Extranet d) Intranet Answer :d) Intranet	16. By default there are ______ worksheets in an Excel file (newly open) : a) 2 b) 3 c) 4 d) 5 Answer : b) 3
17. Total number of columns in Excel sheet are : a) 65536 b) 1024 c) 265 d) 256 Answer :d) 256	18. What is shell ? a) It is an hardware component b) It is a part in compiler c) It is a toool in CPU scheduling d) It is command interpreter Answer : d) It is command interpreter
19. In windows operating system, the long horizontal bar at the bottom of the screen, visible almost att the time is a) Side bar b) Icon c) Slide bar d) Task bar Answer : d) Task bar	20. Which of the following is not valid version of MS-office ? a) Office XP b) Office 97 c) Office -Vista d) Office-2007 Answer : c) Office -Vista
21. Which of these is not a Internet Browser ? a) Firefox b) Chrome c) Drupal d) Opera Answer : c) Drupal	22. Which feature enable us to send the same letter to different person ? a) Macros b) Template c) Mail Merge d) None of the above Answer : c) Mail Merge
23. The layer present in between the hardware and the user program is : a) Application softwares b) Programming languages c) Operating system d) None of the above Answer : c) Operating system	24. The job of CD command in MS-DOS is ? a) Remove a directory b) Copy a directory c) Change a directory d) Make a directory Answer : c) Change a directory
25. Which of the following requires a device driver ? a) Register b) Cache c) Main Memory d) Disk drive Answer : d) Disk drive	26. The boolean expression x+x´y equals a) x+y b) x+xy c) y+yx d) x´y+y´x Answer : a) x+y Explanation: x + x´y =x (1+y) + x´y; ( We know, 1+y=1) = x + xy + x´y= x + y (x+x´) = x+y; (We know, x+x´=1)
27. Which one is Universal gate ? a) NOT b) NAND c) XOR d) AND Answer : b) NAND	28. How many NAND gate are required to perform x+y? a) 2 b) 4 c) 1 d) 3 Answer : d) 3 add picture
29. The main task of Cache memory is ? a) to reduce the time of data transfer between CPU and memory b) to reduce the access time of memory c) to increase the data transfer rate d) None of the above Answer : a) to reduce the time of data transfer between CPU and memory	30. What is the decimal equivalent of (1A)16 + (D)16? a) 33 b) 29 c) 35 d) 39 Answer : d) 39 Explanation: 1A= 1 x 161+ 10 x 160=16+10=26 and D=13; So, 1A + D= 26+13=39
31. autoexec.bat is a? a) Programming language b) DOS Command c) Batch file d) MS-Excel command Answer : c) Batch file	32. Which of the following can be used to create a Web page? a) Visual Basic b) Access c) JSP d) None of the above Answer : c) JSP (Jave server page)
33. Higher bandwidth allows? a) Higher download speed b) Higher upload speed c) Either a or b d) Both a and b Answer : d) Both a and b	34. Which of the following is not a font style? a) Bold b) Italics c) Regular d) Superscript Answer : d) Superscript
35. Router in internet connects ? a) Gateways b) Network c) Bridges d) Switches Answer : b) Network	36. Pendrive contains ? a) Flash memory b) Cache memory c) Dynamic memory d) Static memory Answer : a) Flash memory
37. When we delete a file of folder in windows operating system, it goes to ? a) Recycle Bin b) Dust Bin c) Cycle Bin d) None of the above Answer : a) Recycle Bin	38. Slide sorter of Power Point is available on _____ menu ? a) Insert b) File c) View d) Edit Answer : c) View
39. Which of the following file contains internal DOS commands ? a) Command.com b) IO.sys c) Command.sys d) Copy.con Answer : a) Command.com	40. Which feature allows the user to create a simple presentation without spending too much time on it ? a) Auto Content wizard b) Animation c) Automation d) Chart Wizard Answer : d) Chart Wizard
41. Who designed the first electronic computer ENIAC ? a) Von-Neumann b) Joseph M. Jacquard c) Eckert & Mauchly d) None of the above Answer : a) Von-Neumann	42. Directory in MS-DOS in similar to __ in MS-windows ? a) Files b) Folder c) Icons d) a and b Answer : b) Folder
43. Which one is more suitable for LINUX ? a) It is a single user operating system b) It is a single tasking operating system c) It is a multiuser & multitasking operating system d) All of the above Answer : c) It is a multiuser & multitasking operating system	44. Which help us to display current date only in Excel? a) Date() b) Today() c) Now() d) Time() Answer : b) Today()
45. (-10)10 in 2's complement is ? a) 110110 b) 101010 c) 110101 d) 101001 Answer : b) 101010	46. Disk Partitioning can be done the command? a) FORMAT b) FDISK c) SCANDISK d) PARTITION Answer : b) FDISK
47. In LINUX which command is used to view current directory ? a) vd b) md c) cd d) pwd Answer : d) pwd	48. Buffer is a ? a) Processor b) Control Unit c) RAM d) Temporary Storage Answer : d) Temporary Storage
49. Which code is referred as reflected binary code ? a) ASCII b) Grey c) Excess-3 d) 8421 code Answer : b) Grey	50. Marke the appropriate statement ? a) RAND() returns a random number b) RAND() returns a random number ebtween 0 and 10 c) RAND() returns a random number between 0 and 1 d) RAND() returns a random number between -1 and 1 Answer : c) RAND() returns a random number between 0 and 1

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