NIMCET Computer Previous Year Papers (2008-2022) PDF

# NIMCET COMPUTER PREVIOUS YEAR (2008-2022) ## ASPIRE STUDY KANPUR This document contains past NIMCET exam papers for Computer awareness, from the years 2008 to 2022. It also includes answer keys for each of these exams. ## USEFUL FOR - NIMCET - CUET - TANCET - JAMIA ## Shivam Gupta Computer...

# NIMCET COMPUTER PREVIOUS YEAR (2008-2022) ## ASPIRE STUDY KANPUR This document contains past NIMCET exam papers for Computer awareness, from the years 2008 to 2022. It also includes answer keys for each of these exams. ## USEFUL FOR - NIMCET - CUET - TANCET - JAMIA ## Shivam Gupta Computer Science: Net Qualified # NIMCET 2021 ## NIMCET Previous Year Computer Awareness **1. The Process when processor fetch or decode another instruction during the execution of current instruction is called** (a) Super Computer (b) Pipelining (c) Cloud Computing (d) Accumulators **2. Which of the following is used by ALU to store the intermediate results?** (a) Stack (b) Heap (c) Registers (d) Accumulators **3. One TeraByte(TB)=____GB and One ExaByte(EB)=_____GB** (a) 2^10GB, 2^16GB (b) 2^10GB, 2^20GB (c) 2^10GB, 2^24GB (d) 2^10GB, 2^30GB **4. The Cache Memory is more effective because of** (a) Memory localization (b) Locality of reference (c) Memory size (d) None of the mentioned **5. Which of the following is the fastest means of memory access for CPU?** (a) Registers (b) Cache (c) Main Memory (d) stack **6. The number (2217)8 is equivalent to** (a) (608)16 (b) (028F)16 (c) (048F)16 (d) (2297)16 **7. To fetch data from secondary memory which one of the following register is used** (a) MAR (b) PC (c) IR (d) MBR **8. The binary multiplication 00*11 will give** (a) 11 (b) 00 (c) 01 (d) 10 **9. Consider a computer system with speed of 10^6 instructions per second. A program P, having 2n^2 steps is run on this system, where n is the input size. If n = 10000, what is the execution time for P?** (a) 1.2 seconds (b) 20 seconds (c) 100 seconds (d) 200 seconds **10. To access the I/O devices the status flags is continuously checked in** (a) Program I/O (b) Memory Mapped I/O (c) I/O Mapped (d) None of the above ## Answer Key 2021 | Question | Answer | |---|---| | 1 | B | | 2 | D | | 3 | D | | 4 | B | | 5 | A | | 6 | C | | 7 | A | | 8 | B | | 9 | D | | 10 | A | # NIMCET 2020 ## NIMCET Previous Year Computer Awareness **1. Assume x' represents negation of x the Boolean function x'y' + xy + x'y is equivalent to?** (a) x' + y (b) x + y (c) x + y' (d) x' + y' **2. The memory unit which directly communicates with the CPU is known as** (a) Primary Memory (b) Secondary Memory (c) Shared Memory (d) Auxiliary Memory **3. Dynamic RAM consumes... Power and ......than Static RAM** (a) More, Faster (b) More, Slower (c) Less, Slower (d) Less, Faster **4. The binary equivalent of (234.125)10?** (a) (11101010.101)2 (b) (10101010.011)2 (c) (11101010.001)2 (d) (10101110.011)2 **5. Determine the octal equivalent of (432267)10?** (a) (432267)8 (b) (346731)8 (c) (2164432)8 (d) None of the above **6. One Exabyte is equal to ...** (a) 10^8 bytes (b) 1 Zetta Bytes divided (/) by one thousands (c) 1 Peta Bytes multiplied (x) by one thousands (d) All of the above **7. Consider the following circuit.** A B D **How many minimum numbers of two input NAND gates are required to design the above circuit?** (a) 6 (b) 4 (c) 5 (d) 3 **8. The time required for fetching and execution of one simple machine instruction is known as** (a) Delay Time (b) CPU Cycle (c) Real Time (d) Seek Time **9. The equivalence of given expression x+x'y with Boolean theorem is....** (a) x (b) x+y (c) x' (d) 0 **10. The logic XOR operation of (4AC0)16 and (B53F)16 results** (a) AACB (b) 0000 (c) FFFF (d) ABCD ## Answer Key 2020 | Question | Answer | |---|---| | 1 | A | | 2 | A | | 3 | C | | 4 | C | | 5 | D | | 6 | D | | 7 | B | | 8 | B | | 9 | B | | 10 | C | # NIMCET 2019 ## NIMCET Previous Year Computer Awareness **1. If we can generate a maximum of 4 Boolean functions using n Boolean variables, what will be minimum value of n?** (a) 65536 (b) 16 (c) 1 (d) 4 **2. In IEEE single precision floating point representation, exponent is represented in** (a) 8 bit Sign-magnitude representation (b) 8 bit 2's complement representation (c) Biased exponent representation with a bias value 127 (d) Biased exponent representation with a bias value 128 **3. With 4-bit 2's complement arithmetic, which of the following addition will result in overflow?** (a) 1111+1101 (b) 0110+0110 (c) 1101+0101 (d) 0101+1011 **4. If the 2's complement representation of a number is (011010)2, what is its equivalent hexadecimal representation?** (a) (110)16 (b) (1A)16 (c) (16)16 (d) (26)16 **5. For the circuit shown below, the complement of the output F is** X DDD (a) 0 (b) X (c) X' (d) 1 **6. If N is a 16-bit signed integer, then 2's complement representation of Nis (F87B)16. The 2's complement representation of 8*N is** (a) (C3D8)16 (b) (187B)16 (c) (F878)16 (d) (987B)16 **7. The base (or radix) of the number system such that the following equation holds 312/20 = 131.1 is** (a) 2 (b) 4 (c) 5 (d) 6 **8. Which of the following represents (D4)16?** **9. How many Boolean expressions can be be formed with 3 Boolean variables?** (a) 16 (b) 1024 (c) 32 (d) 256 **10. In an 8 bit representation of computer system the decimal number 47 has to be subtracted from 38 and the result in binary 2's complement is** (a) 11110111 (b) 10001001 (c) 11111001 (d) 11110001 ## Answer Key 2019 | Question | Answer | |---|---| | 1 | A | | 2 | C | | 3 | B | | 4 | B | | 5 | D | | 6 | A | | 7 | C | | 8 | B | | 9 | D | | 10 | A | # NIMCET 2018 ## NIMCET Previous Year Computer Awareness **1. ** A B C (a) A + B + C (b) A(B + C) (c) B(C + A) (d) C(A + B) **2. Which one of the following expression does NOT represent exclusive NOR of x and y?** (a) xy + xy (b) xӯ (c) xy (d) x⊕y **3. If a signal passing through a gate is initiated by sending low into one of the inputs and the output is high, the gate is** (a) NOR (b) NAND (c) AND (d) OR **4. Given √(224) = (13),, then the value of the radix r is** (a) 10 (b) 8 (c) 5 (d) 6 **5. What type of errors are not detected by assembler?** (a) Syntax Error (b) Run time error (c) Logical Error (d) All of these **6. Consider the equation (43)x = (y3)8 where x and y are unknown. The number of possible solution is** (a) 4 (b) 5 (c) 6 (d) 7 **7. Let the memory access time is 10 milliseconds and cache access time is 10 microseconds. Assume the cache hit ratio of 15%. The effective memory access time is** (a) 2 milliseconds (b) 1.5 milliseconds (c) 1.85 microseconds (d) 1.85 milliseconds **8. What are the values of R1 and R2 respectively in the expression (235)R1 = (565)10 = (1065)R2?** (a) 8, 16 (b) 16, 8 (c) 8, 12 (d) 16, 12 **9. What is the minimal from of Karnaugh map shown below? (Assume that x denotes a don't care term)** **10. In order to store floating numbers in computer using the normalized representation and 32 - bit single precision, the number of bits used for exponent and fraction are respectively.** (a) 11, 21 (b) 16, 15 (c) 16, 16 (d) 8, 23 ## Answer Key 2018 | Question | Answer | |---|---| | 1 | C | | 2 | D | | 3 | B | | 4 | C | | 5 | C | | 6 | B | | 7 | D | | 8 | B | | 9 | B | | 10 | D | # NIMCET 2017 ## NIMCET Previous Year Computer Awareness **1. Which one of the following Boolean algebraic rule is correct** (a) AA' = 1 (b) A + AB = A + B (c) A + A'B = A + B (d) A(A + B) = B **2. The representation of a floating point binary number +1001.11 in 8-bit fraction and 6-bit exponent format is** (a) Fraction : 01001110 exponent: 000100 (b) Fraction: 00001001 exponent: 000011 (c) Fraction: 10010000 exponent: 110000 (d) Fraction: 10010000 exponent: 110000 **3. Which term is redundant is the expression AB+A'C+BC?** (a) BC (b) A'C (c) AB (d) AB + A'C **4. Let the memory access time is 10 milliseconds and cache miss ratio 15%. The effective memory access time is ?** (a) 2 milliseconds (b) 1.5 milliseconds (c) 1.85 microseconds (d) 1.85 milliseconds **5. Which of the following is the representation of decimal number (- 147) in 2's compliment notation on 12-bit machine ?** (a) 111101101100 (b) 110001001101 (c) 111101101101 (d) 000001101101 **6. The first instructor of bootstrap loader program of an operating system is stored in** (a) RAM (b) Hard Disk (c) BIOS (d) None **7. Consider the equation (40)x= (132)y in some bases x and y. Then a possible set of values of x and y are** (a) 8 and 12 (b) 12 and 8 (c) 6 and 12 (d) 12 and 6 **8. The smallest integer that can be represented by an 8- bit number in 2's complement form is** (a) -256 (b) -128 (c) 127 (d) -255 **9. Which of the following is a functionally complete set of gates? (i) NAND (ii) NOR** (a) I but not II (b) II but not I (c) Neither I not II (d) Both I and II **10. The total number of binary function that can be defined using n Boolean variable is** (a) 2^n - 1 (b) 2^n (c) 2^n+1 (d) None of these ## Answer Key 2017 | Question | Answer | |---|---| | 1 | C | | 2 | A | | 3 | D | | 4 | B | | 5 | C | | 6 | C | | 7 | A | | 8 | B | | 9 | D | | 10 | D | # NIMCET 2016 ## NIMCET Previous Year Computer Awareness **1. The 2's complement representation of the number (-100)10 in an 8 bit computer is** (a) 10011011 (b) 01100100 (c) 11100100 (d) 10011100 **2. The number of terms in the product-of-sum canonical form of [(x1 + x2)(X3X4)] is** (a) 7 (b) 8 (c) 9 (d) 10 **3. Find the odd man out:** (a) HTTP (b) FCFS (c) HTML (d) TCP/IP **4. Consider a hard disk with 16 recording surfaces (0-15) having 16384 cylinders (0-16383) and each cylinder contains 64 sectors(0-63). Data storage capacity in each sector is 512 bytes. Data are organized cylinder wise and the addressing format is < cylinder no., surface no., sector no.>. A file of size 42797KB is stored in the disk and the starting disk location of the file is <1200,9,40>. What is cylinder number of the last sector of the file, if it is stored in a contiguous manner?** (a) 1284 (b) 1282 (c) 1286 (d) 1288 **5. Consider the following min term expression for F. F (P, Q, R, S) = ∑ (0, 2, 5, 7, 8, 10, 13, 15). The min-terms 2, 7, 8 and 13 are 'do not care' terms. The minimal sum-of-products form for F is** (a) QS + QS (b) QS + QS (c) QRS + QRS + QRS + QRS (d) PQS + PQS + PQS + PQS **6. Consider the equation (43)x = (y3)8 where x and y are unknown. The number of possible solution is** (a) 4 (b) 6 (c) 5 (d) 7 **7. Subtract (1010)2 from (1101)2 using first complement** (a) (1100)2 (b) (0101)2 (c) (1001)2 (d) (0011)2 **8. A hard disk has a rotational speed 6000 rpm. Its average latency time is** (a) 5 × 10-3 sec (b) 0.05 sec (c) 1 sec (d) 0.5 sec **9. The Boolean expression represented by the following Venn diagram is** (a) a XOR b (b) a'b + ab (c) ab + a'b' (d) (a + b')(a' + b) **10. The range of n-bit signed magnitude representation is** (a) 0 to 2^n - 1 (b) -(2^n-1 – 1) to (2^n−1 − 1) (c) -(2^n - 1) to (2^n − 1) (d) 0 to (2^n-1 – 1) ## Answer Key 2016 | Question | Answer | |---|---| | 1 | D | | 2 | C | | 3 | B | | 4 | A | | 5 | B | | 6 | C | | 7 | D | | 8 | A | | 9 | A | | 10 | B | # NIMCET 2015 ## NIMCET Previous Year Computer Awareness **1. Which optical phenomenon is utilized in the operation of the latest write-once optical storage medium called digital paper?** (a) Polarization (b) Interference (c) Internal reflection (d) Diffraction **2. If N is a 16-bit signed integer, The 2's complement representation of Nis (F87B)16.The 2's complement representation of 8*N is** (a) (C3D8)16 (b) (187B)16 (c) (F878)16 (d) (987B)16 **3. Given f₁, f3 and f in canonical sum of products form (in decimal) for the circuit f₁ = ∑m(4,5,6,7,8), f3 = ∑m(1,6,15) and f = Σ(1,6,8,18), then f2 is** (a) Σ(4,6) (b) Σ(4,8) (c) Σ(6,8) (d) Σ(4,6,8) **4. Which of the following is equivalent to the expression (X + Y + Z) ?** (a) (X + Y)Z (b) (X + Y)Ž (c) (X + Y)Ž (d) (X + Y)Z **5. {p → qvr,q → s, r → s} is logically equivalent to** (a) q→ r (b) r → p (c) p → s (d) s → p **6. The number of MOS transistors required to implement a typical dynamic RAM cell is?** (a) 6 (b) 5 (c) 1 (d) 2 **7. Consider 4-bit gray code representation of numbers. Let h3 h2 h1 ho be the gray code representation of a number n and g1g2g3go be the gray code representation of the number (n + 1) modulo 16. Which one of the following functions is correct?** (a) go(h3 h2 h₁ ho) = ∑(1,2,3,6,10,13,14,15) (b) g₁(h3 h2 h₁ ho) = ∑(4,9,10,11,12,13,14,15) (c) g3(h3 h2 h₁ ho) = ∑(2,4,5,6,7,12,13,15) (d) 94(h3 h2 h₁ ho)∑(0,1,6,7,10,11,12,13) **8. The minimum number of NAND gates required to realize AB + AB'C + AB'C' is** (a) 3 (b) 2 **9. When the value 37H is divided by 17H, the remainder is** (a) COH (b) 03H (c) 07H (d) 09H **10. The number of Boolean functions possible with n binary variables is equal to** (a) 2^2 (b) 2^n (c) 2^(2^n-1) (d) 2^(n-1) ## Answer Key 2015 | Question | Answer | |---|---| | 1 | B | | 2 | A | | 3 | C | | 4 | D | | 5 | C | | 6 | C | | 7 | C | | 8 | D | | 9 | D | | 10 | A | # NIMCET 2014 ## NIMCET Previous Year Computer Awareness **1. The decimal equivalent of the hexadecimal operation A10 + B21 is** (a) 5425 (b) 5246 (c) 2849 (d) 5344 **2. What is the 2's complement of 0011 0101 1001 1100?** (a) 1100 1010 1100 1011 (b) 1100 1010 0110 0011 (c) 1100 1010 0110 0100 (d) 1100 1010 1111 1111 **3. Multiplication of 1112 by 1012 is** (a) 1100112 (b) 1000112 (c) 1111002 (d) 0001012 **4. What is the 8 bit 2's complement representation of the negative integer -93?** (a) 10100011 (b) 10100010 (c) 0XA2 (d) None of these **5. Consider the values A = 2.0 × 10^30, B = -2.0 × 10^30 , C = 1.0. Assume, that the floating-point numbers are represented with 32 bits. What are the values of X and Y, when the following sequence of operations are executed on a computer?** X=A+B Y=A+C X=X+C Y=Y+B (a) X=1.0, Y=1.0 (b) X=1.0, Y=0.0 (c) X=0.0, Y=1.0 (d) X=0.0, Y=0.0 **6. The Boolean expression X (X + Y) is same as** (a) X.(1+Y) (b) X (c) X.1 (d) All of these **7. How many bytes are there in a nibble?** (a) one - fourth (b) half (c) 2 (d) 4 **8. The number of bit strings of length 8, that start with the bit 0 or end with the bits 11 is** (a) 132 (b) 180 (c) 256 (d) 160 **9. The result of multiplication of the numbers (10101)2 and (11101)2 in hexadecimal form is** **10. The binary equivalent of (531.53125)10 is** (a) (10010100111.00001)2 (b) (1000010011.10011)2 (c) (1010010011.11001)2 (d) (1000010011.10001)2 (a) 609 (b) 216 (c) 261 (d) 906 ## Answer Key 2014 | Question | Answer | |---|---| | 1 | A | | 2 | C | | 3 | B | | 4 | A | | 5 | B | | 6 | D | | 7 | B | | 8 | D | | 9 | C | | 10 | A | # NIMCET 2013 ## NIMCET Previous Year Computer Awareness **1. All digital circuits can be realized by using only** (a) Exclusive OR gates (b) Half adders (c) Multiplexers (d) OR gate **2. The Boolean function a + (āb) is equivalent to** (a) a. b (b) a +b (c) a. Б (d) ā + b **3. Which of the following circuit is used as a memory device in computers?** (a) Flip-Flop (b) Rectifier (c) Comparator (d) All of these **4. Convert the Hexadecimal number 4DF to its octal equivalent** (a) 2333 (b) 2337 (c) 2773 (d) 2373 **5. A tautology is a Boolean formula that is always true. Which of the following is a tautology?** (a) x (b) (x + x)y (c) x + y + x (d) (xy) + x **6. Acronym of EEPROM is** (a) Extended Erasable Programmable Memory (b) Electrically Erasable Read Only Memory (c) Electrically Erasable Programmable Read Only Memory (d) Extended Erasable Page-Oriented Memory **7. For reproducing sound, a CD audio player uses a** (a) Quartz crystal (b) Titanium needle (c) Barium ceramic (d) Laser beam **8. When we open an internet site, we see www. What does www stand for** (a) World Wide Word (b) World Wide Web (c) World Wide Webinar (d) Word Widing Works **9. The answer of the operation (10111)2 × (1110)2 in hex equivalent is** (a) 150 (b) 14C (c) 142 (d) 13E **10. The minimum number of bits to represent a character from ASCII code set is** (a) 2 (b) 8 ## Answer Key 2013 | Question | Answer | |---|---| | 1 | B | | 2 | B | | 3 | A | | 4 | B | | 5 | C | | 6 | C | | 7 | D | | 8 | C | | 9 | C | | 10 | D | # NIMCET 2012 ## NIMCET Previous Year Computer Awareness **1. (2FAOC)16 is equivalent to** (a) (195 084)10 (b) (0010 1111 1010 0000 1100)2 (c) (a) and (b) Both (d) None of these **2. The decimal equivalent of octal number 111 010 is** (a) 81 (b) 72 (c) 71 (d) 61 **3. An I/O processor controls the flow of information between :** (a) cache memory and I/O devices. (b) main memory and I/O devices. (c) two I/O devices. (d) cache and main memories **4. Which of following devices will take highest time in taking the backup of the data from a computer?** (a) Magnetic Disk (b) Pen Drive (c) CD (d) Magnetic Tape **5. ROM is a kind of :** (a) primary memory (b) cache memory (c) removable memory (d) secondary memory **6. The errors that can be pointed out by compilers are** (a) Syntax (b) Semantic errors (c) Logical errors (d) Internal errors **7. Let x = 11111010 and y = 00001010 be two 8-bit 2's complement numbers. Their product in 2's complement notation is :** (a) 11000100 (b) 10011100 (c) 10100101 (d) 11010101 **8. The range of numbers that can be stored in 8 bits, if negative numbers are stored in 2's complement form is:** (a) -128 to +128 (b) -128 to +127 (c)-127 to +128 (d) -127 to +127. **9. Primary storage is_as compared to secondary memory:** (a) slow and expensive (b) fast and inexpensive (c) fast and expensive (d) slow and inexpensive **10. Which of the following unit is used to supervise each instruction in the CUP?** (a) Control Unit (b) Accumulator (c) ALU (d) Control Register ## Answer Key 2012 | Question | Answer | |---|---| | 1 | B | | 2 | B | | 3 | B | | 4 | C | | 5 | A | | 6 | A | | 7 | A | | 8 | B | | 9 | C | | 10 | A | # NIMCET 2011 ## NIMCET Previous Year Computer Awareness **1. Which protocol needs to be installed for Internet access on a network?** (a) TCP/IP (b) TELNET (c) IPX/SPX (d) Net BEUI **2. A petabyte represents approximately** (a) 1000 gigabytes (b) 1000 kilobytes (c) 1000 terabytes (d) 1000 yottabytes **3. The ASCII code of 'A' is** (a) 66D (b) 41H (c) 01000010 (d) 01100011 **4. An eight bit byte is capable of representing how many different characters ?** (a) 64 (b) 128 (c) 256 (d) 512 **5. When two binary numbers are added, then an overflow will never occur if** (a) Both numbers of same sign (b) The carry into the sign bit position and out of sign bit position are not equal (c) The carry into the sign bit position and out of sign bit position are equal (d) The carry into the sign bit position is 1 **6. The sum of 11010 + 01111 equals** (a) 101001 (b) 101010 (c) 110101 (d) 101000 **7. Consider x and y be some Boolean variables, "+" denotes the OR operation and “.” denotes the AND operation. What will be the simplified form of the Boolean expression : x . (x + y) ?** (a) y (b) 1 (c) 0 (d) x **8. Which one of the following is not a valid rule of Boolean algebra ?** (a) A +1 =1 (b) A = A' (c) AA = A (d