MULTIVECTOR REVIEW AND TRAINING CENTER COMPUTER FUNDAMENTALS 1. Digital system usually operate in ________ systems. A. binary B. decimal C. octal D. hexadecimal 2. An abbreviation for a binary digit is A. byte B. word C. bit D. bin 3. A group of 8 bits called a A. byte B. word C. bit D. nibble 4. What do you call a set of four bits? A. nibble B. byte C. word D. tribit 5. The largest binary number that can obtained with 16 bits in its decimal equivalent is A. 16166 B. 16 C. 216 D. 56535 6. The number of bytes in 48K memory is A. 50000 B. 49152 C. 48000 D. 46538 7. The highest element that a number system on base 6 can use A. 5 B. 4 C. 3 D. 6 8. Covert the binary number 1110101.11 to decimal A. 117.0 B. 117.75 C. 118.0 D. 117.5 9. Convert (198)12 to decimal A. 198 B. 200 D. 260 C. 10 REE - Apr. 1996 10. The hexadecimal number B6C7 is equal to the decimal number A. 4671 B. 47691 C. 49761 D. 49671 11. Convert the decimal number 41.6875 to binary A. 101001.0 B. 101001.1011 C. 11.101101 D. 101001.0100 12. Convert decimal 225 to its binary, octal and hexadecimal equivalent A. (01110001)2, (341)8, (E)16 C. (10001110)2, (143)8, (1E)16 B. (011100001)2, (341)8, (E)16 D. (100011110)2, (143)8, (E1)16 REE - Apr. 2001 / Apr. 2003 / Sep. 2005 13. For the base 10 number of 30, the equivalent binary number is A. 1110 B. 0111 C. 1111 D. 11110 REE - Apr. 2001 / Apr. 2004 / Apr. 2007 14. What in binary is A base 16? A. 1110 B. 1000 D. 1011 C. 1010 REE - Apr. 2001 15. The number of 17 base 8 is equivalent to binary A. 1110 B. 1111 C. 1110 D. 10000 REE - Sep. 2007 16. 35 base 8 + (1011) base 2 = ______________ base 2 A. 101001 B. 101111 C. 101000 D. 101001 REE - Sep. 2006 17. E base16 times 4 base 8. A. 111111 B. 111000 D. 100111 C. 101111 REE - Sep. 2001 18. What is the octal equivalent of the hexadecimal number EE? A. 378 B. 375 C. 356 D. 376 REE - Sep. 2001 19. Convert octal (3458) to the equivalent binary coded decimal (BCD16). Select the nearest answer A. 1011011001 B. 001101000101 C. 001000101001 D. 11100101 REE - Sep. 2001 20. In digital codes, how do you identify codes running from 1 - 10 or from 0 - 9? A. Decimal C. gray B. standard base 10 D. octal REE - Sep. 2001 21. Determine the decimal value of 23.4 base 8 A. 27.5 B. 17.0 C. 17.5 D. 19.5 REE - Apr. 2002 22. The binary representation 10101 corresponds to which base 10 number? A. 8 B. 16 C. 21 D. 10,10 REE - Apr. 2003 23. When a binary point of a binary number is moved one place to the right, what happen to its value? A. divides by2 C. increased by 10 B. multiplies by 2 D. multiplies by 10 24. Convert binary number 11010111 to its decimal, octal and hexadecimal equivalent. A. (215)10, (320)8, (d7)16 C. (215)10, (320)8, (D6)16 B. (216)10, (327)8, (D7)16 D. (215)10, (327)8, (D7)16 25. Find the sum of 34 and 5 and 23 base 5 A. 112 base 5 B. 134 base 5 C. 222 base 5 REE - Apr. 2001 26. The division of 11000 base 2 and 100 base 2 gives A. 90 B. 108 C. 110 D. 123 base 5 D. 220 REE - Apr. 2001 27. In the digital codes, how do you identify codes running from 0 to 1 or run from 0 - 7? A. Base 10 B. octal C. binary D. gray REE - Sep. 2002 28. What is the binary equivalent with sign bit of -5 in 2's complement? A. 1.0011 B. 1.1011 C. 1.0000 D. 1.0001 REE - Apr. 2003 29. What is the equivalent 4 digit octal code 2 to graycode? A. 1000 B. 1100 C. 0011 D. 1001 30. Determine the value of base x if (211)x = (152)8. A. 7 B. 6 C. 5 D. 4 REE - Oct. 1996 31. Decimal 5436 when converted to radix minus one complement will become A. 4555 B. 4356 C. 4563 D. 4653 REE - Sep. 2006 32. What is the radix minus one complement of (BABE) base 16? A. 5444 B. 4541 C. 4511 D. 4561 REE - Sep. 2006 33. What is the 7's complement of (1234) base 8? A. 6522 B. 6512 C. 6588 D. 6543 34. Determine the 9's complement of 12349876 A. 67894321 B. 87650123 C. 99019765 D. 12349876 35. Find the true complement of 11100 A. 00001 B. 00111 C. 00100 D. 01010 36. Find the 5's complement of 32154 base 6 A. 23401 B. 12321 C. 12323 D. 3521 37. The 10's complement of 123900 A. 876100 B. 001678 C. 900123 D. 987654 38. The 1's complement of 10101110 is A. 01010001 B. 0100101 C. 01110101 D. 00011100 39. The 2's complement of 10000001 is A. 00000011 B. 0100101 C. 1111111 D. 01110001 40. Represent decimal number 8620 in BCD A. 1010110101000000 B. 0000010011010000 C. 10000011000100000 D. 11111110000000000 41. A logic gate is an electronic circuit which A. makes logic decision B. works on binary algebra C. allows electron flow in one direction D. alternates between 0 and 1 42. Boolean algebra is essentially based on A. Symbols B. logic C. truth D. numbers 43. Different values in Boolean algebra can have values of A. 0 or 1 B. high or low C. true or false D. on or off 44. According to absorptive law of Boolean algebra, expression (A+AB) is A. A B. B C. AB D. A' 45. Simplify x'y' + xy + x'y A. x + y' D. x' + y' B. x' + y C. x + y 46. Simplify (x + y)(x + y') A. x + y B. y 47. Simplify x'y + xy' + xy + x'y' A. 1 B. x'y C. x + y' D. x C. x D. y 48. Reduce to minimum number of literals x' + xy + xz' + xy'z' A. x'y' + xz B. x + y C. x D. x' + y + z' 49. Reduce xy + x'y'z' + x'yz' A. x B. xz + x'y' D. y' C. x'z' + xy 50. Reduce F(x,y,z) = Σ (0, 1, 5, 7) to its minimum numbers of literals A. x'y' + xz B. xy + x'z C. y D. x 51. Reduce F(x,y,z) = Σ (1, 2, 3, 6, 7) to its minimum number of literals A. x' + y' B. x'z' + y' C. x'z + y D. y' 52. The NOT symbol at the output of an OR converts it into what? A. AND B. NOR C. NAND D. NOPE 53. A 3 input AND gate followed by a NOT gate has three inputs X = ON, Y = OFF and Z ≠ ON. Its output would be A. ON B. OFF C. don't know D. don't care REE - Sep. 2001 54. In the logic circuit, what is the output of an XOR circuit, when inputs A and B is 0, 1 respectively when f = A (+) B. A. 00 B. 1 C. 11 D. 0 REE - Apr. 2005 55. In a logic circuit with input A & B in an OR gate. If A = 0 and B = 1. What is f? [f = A + B] A. 0 B. 01 C. 1 D. 10 REE - Apr. 2006 56. The binary coding scheme most commonly used in microcomputers is _________. A. Binary code B. EBCDIC C. Baudot code D. ASCII 57. ASCII stands for A. American Standard Code for Information Interchange B. American Standard Code for Installation Information C. American Standard Code for International Industry D. American Standard Code for International Information 58. Find the value of J in the program I=1 J=0 15 J = J^2 + I^2 If (I = 3) GOTO 16 I = I +1 GOTO 15 16 CONTINUE A. 34 B. 9 C. 40 59. What would be the value printed output as a result of the following? 10 DEF FNA (X) = X^2 + I/X 20 PRINT FNA (2) 30 END A. 7.2 B. 4.5 C. 6.5 D. 15 D. 483.14 REE - Sep. 2006 60. A _______ is programmable, multi-use machine that accepts data-raw facts and figures and processes, or manipulates, it into information we can use, such as summaries or totals. A. Cash Registration B. Calculator C. Adding Machine D. Computer REE - Sep. 2005 61. _________ are round pieces of flat plastic that store data and program as magnetized spots. A. Hard disk B. Floppy disk C. Compact disk D. CD ROM REE - Apr. 2005 62. _________ is a secondary storage medium, generally non-removable disk made out of metal and covered with a magnetic recording surface. It holds data in the form of magnetized spots are usually built into the computer system cabinet. A. Hard disk B. Floppy disk C. Compact disk D. CD ROM REE - Sep. 2004 63. On personal computers the data storage device with the largest capacity is most likely to be A. Hard disk C. Random Access Memory B. 3 ½" DD Diskette D. 3 ½" HD Diskette REE - Sep. 2005 64. What does ALU means? A. part of nand B. part of chip C. part of power supply D. part of CPU where data is manipulated REE - Sep. 2004 65. Resides in the main memory while the computer is on and directs after application. A. Files B. DIR C. Supervisor D. Options REE - Sep. 2005 66. What allow to choose command from menu? A. Files B. DIR C. Storage D. Menu Driven Interface REE - Sep. 2005 67. A _______ is a list of instructions that the computer must follow in order to process data into information. A. Program B. Pseudocode C. Flowchart` D. File REE - Sep. 2003 68. A non-impact printer that forms images with little dots to produce high quality image. A. ink-jet printer B. dot-matrix printer C. card printer D. computer printer REE - Apr. 2005 69. _________ is a process of using microcomputer, mouse, scanner, laser printer that combines highly digital text and images to produce a high quality output. A. CAM C. CAD B. Desktop Publishing D. CAE REE - Apr. 2003 / Apr. 2006 70. A software that allows users to have fast and flexible access to large information and documents. A. internet B. e-mail C. hypertext D. hyperlink REE - Sep. 2005 71. Network computers has three roles. Which one of this? A. Hard disk B. Fax Modem C. Peers D. Plotters REE - Oct. 2000 72. A network of networks where the people can retrieve information, communicate, entertain, do remote purchasing from the comfort of a personal computer called. A. Internet B. e-mail C. fax D. home TV shopping REE - Apr. 2004 / Sep. 2005 73. A _______ is one in which all microcomputers and other communication devices are connected to a central hub, such a file server or host computer. A. Star Network B. Ring Network C. Bus Network D. Hybrid Network REE - Sep. 2006 74. A __________ is one in which all microcomputers and other communication devices are connected in continuous loop. A. Star Network B. Ring Network C. Bus Network D. Hybrid Network REE - Sep. 2003 75. A parity bit is also called _______ which is used to check the accuracy. A. check bit B. RAM C. silicon type D. driver REE - Sep. 2003 76. A two-way parallel path which connects the processor and memory containing addresses. A. cache memory B. control bus C. address bus D. buffer