11CS_EM_OneMarks_2025.pdf

என்றும் மாணவர்கள் நலனில் 11 COMPUTER SCIENCE Book back and Additional One Mark Questions wi...

என்றும் மாணவர்கள் நலனில் 11 COMPUTER SCIENCE Book back and Additional One Mark Questions with Answer 1. INTRODUCTION TO COMPUTERS Choose the correct answer. D) Fifth Generation Computer 1. First generation computers used 13. Expansion of ALU is (a) Vacuum tubes (b) Transistors A) Arithmetic and Literal Unit (c) Integrated circuits (d) Microprocessors B) Automatic and Logistic Unit 2. Name the volatile memory C) Arithmetic and Logarithmic Unit (a) ROM (b) PROM (c) RAM (d) EPROM D) Arithmetic and Logic Unit 3. Identify the output device 14. Expansion of RAM is (a) Keyboard (b) Memory (c) Monitor (d) Mouse A) Radio Access Memory 4. Identify the input device B) Random Access Memory (a) Printer (b) Mouse (c) Plotter (d) Projector C) Random Address Memory 5. ____ Output device is used for printing building plan. D) Random Access Member (a) Thermal printer (b) Plotter 15. Expansion of ROM is (c) Dot matrix (d) inkjet printer A) Read Only Memory 6. Which one of the following is used to in ATM B) Random Open Memory machines C) Response Optional Memory (a) Touch Screen (b) speaker D) Read Optional Memory (c) Monitor (d) Printer 16. Expansion of Q.R. is 7. When a system restart which type of booting is used. A) Question Response B) Question Reader (a) Warm booting (b) Cold booting C) Quick Response D) Quick Reader (c) Touch boot (d) Real boot 17. Expansion of CRT is 8. Expand POST A) Cassette Radio Terminal B) Cathode Ray tube (a) Post on Self Test (b) Power on Software Test C) Cathode Ray Terminal D) Cathode Rays Transfer (c) Power on Self Test (d) Power on Self Text 18. Expansion of LCD is 9. Which one of the following is the main memory? A) Light Crystal Display B) Liquid Cathode Display (a) ROM (b) RAM (c) Flash drive (d) Hard disk C) Liquid Crystal Display D) Least Crystal Display 19. Expansion of LED is 10. Which generation of computer used IC’s? A) Liquid Emitting Diodes B) Least Emitting Diodes (a) First (b) Second (c) Third (d) Fourth C) Laser Emitting Diodes D) Light Emitting Diodes ADDITIONAL QUESTIONS 20. Expansion of VGA is 11. Match. A) Video Graphics Array a) 1st Generation Computer -i) Honeywell 6000 series B) Video Graphics Adapter b) 2nd Generation Computer - ii) 1971-1980 C) Vector Graphics Adapter c) 3rd Generation Computer - iii) Transistors D) Video Graphics Accessor d) 4th Generation Computer - iv) Machine Language 21. The first computer monitor was part of the ________ a) iv, iii, i, ii b) i, iii, iv, ii computer system. c) i, ii, iii, iv d) i, ii, iv, iii A) Xerox Alto B) IBM 1620 12. Which generation of computer used Ultra Large-Scale C) ENIAC1800 D) Pentium I Integration? 22. Expansion of BIOS is A) Second Generation Computer A) Basic Input Output Software B) Third Generation Computer B) Basic Input Output System C) Beginners Input Output Services C) Fourth Generation Computer D) Basic Input Output Strategy..1.. A. PRABHAKAR - 9442979144  2. NUMBER SYSTEMS Choose the correct answer. 5. Expansion of BCD is 1. Which refers to the number of bits processed by a a) Binary Coded Decoder computer’s CPU? b) Basic Coded Decimal A) Byte B) Nibble C) Word length D) Bit c) Binary Coded Decimal 2. How many bytes does 1 Kilo Byte contain? d) Beginners Coded Decimal A) 1000 B) 8 C) 4 D) 1024 6. The ASCII value for blank space is ________ 3. Expansion for ASCII a) 32 b) 42 c) 48 d) 28 A) American School Code for Information Interchange 7. Expansion of EBCDIC is B) American Standard Code for Information a) Extended Binary Coded Decimal Interchange Code Interchange b) Extended Binary Coded Decimal Internet Code C) All Standard Code for Information Interchange c) Example Binary Coded Decimal Interchange Code D) American Society Code for Information Interchange d) Extended Binary Coded Decimal Information Code 4. 2^50 is referred as 8. ISCII stands for A) Kilo B) Tera C) Peta D) Zetta a) International Standard Code for Information 5. How many characters can be handled in Binary Interchange Coded Decimal System? b) Indian Standard Code for Information A) 64 B) 255 C) 256 D) 128 Interchange 6. For 11012 the equivalent Hexadecimal is? c) Indian School Code for Information Interchange A) F B) E C) D D) B d) Indian Society Code for Information Interchange 7. What Is the 1’s complement of 00100110? 9. The ASCII value of zero (0) is ________ A) 00100110 B) 11011001 a) 32 b) 42 c) 48 d) 28 C) 11010001 D) 00101001 10. The range of ASCII values for lower case alphabets is 8. Which amongst this is not an Octal number? from A) 645 B) 234 C) 876 D) 123 a) 97 to 122 b) 87 to 112 c) 65 to 90 d) 85 to 110 ADDITIONAL QUESTIONS 11. The range of ASCII values for the upper-case 1. ‘0’and ‘1’ that the Computer can understand is called alphabets is a) Machine language b) High-level language bit a) 97 to 122 b) 87 to 112 c) 65 to 90 d) 85 to 110 c) Assembly language d) Query structure language 12. MSB is 2. Binary numbers like 0 or 1 are called ________. a) Most Significant Byte b) Most Significant Bit a) Byte b) Bit c) Nible d) Word c) Most simple bit d) Most successful bit 3. Nibble is a collection of ________ bits. 13. LSB is a) 2 b) 4 c) 8 d) 16 a) Least successful bit b) Linear significant bit 4. 1 Kilobyte represents 1024 i.e. _______ bytes. c) Least simple bit d) Least significant bit a) 240 b) 230 c) 220 d) 210 PART - II : BOOLEAN ALGEBRA Choose the correct answer. ADDITIONAL QUESTIONS 1. Which is a basic electronic circuit which operates on 1. who proposed the basic principles of this algebra? one or more signals? a) Boole George b) George Boole (A) Boolean algebra (B) Gate c) Robert Boole d) Boole Robert (C) Fundamental gates (D) Derived gates 2. Logical constants 2. Which gate is called as the logical inverter? a) 0, 1 b) -1, 0 c) -1, 1 d) -1, -2 3. In logical constants, True is represented by (A) AND (B) OR (C) NOT (D) XNOR a) A b) 0 c) 1 d) 𝐴 3. A + A =? 4. In logical constants, False is represented by (A) A (B) O (C ) 1 (D) A a) A b) 0 c) 1 d) 𝐴 4. NOR is a combination of? 5. A + 0 =? (A) NOT(OR) (B)NOT(AND) (C ) NO(OR) (D) NO (NR) a) A b) 0 c) 1 d) 𝐴 5. NAND is called as …… Gates 6. A. 1 =? (A) Fundamental Gate (B) Derived Gate a) A b) 0 c) 1 d) 𝐴 (C ) Logical Gate (D) Universal gate..2.. A. PRABHAKAR - 9442979144 7. A. 𝐴 =? 10. The sign of the OR logical operation is a) A b) 0 c) 1 d) 𝐴 a) (.) dot b) (+) plus c) Over bar d) (-) minus 8. A + 𝐴 =? 11. The sign of the NOT logical operation is a) A c) 0 c) 1 d) 𝐴 a) (.) dot b) (+) plus c) Over bar d) (-) minus 9. The sign of the AND logical operation is a) (.) dot b) (+) plus c) Over bar d) (-) minus 3. COMPUTER ORGANISATION Choose the correct answer. (a) 28 (b) 1024 (c) 256 (d) 8000 1. Which of the following is said to be the brain of a 8. What is the capacity of 12cm diameter DVD with computer? single sided and single layer? (a) Input devices (b) Output devices (a) 4.7 GB (b) 5.5 GB (c) 7.8GB (d) 2.2 GB (c) Memory device (d) Microprocessor 9. What is the smallest size of data represented in a CD 2. Which of the following is not the part of a (a) blocks (b) sectors (c) pits (d) tracks microprocessor unit? 10. Display devices are connected to the computer (a) ALU (b) Control unit through. (c) Cache memory (d) register (a) USB port (b) Ps/2 port (c) SCSI port (d) VGA 3. How many bits constitute a word? connector (a) 8 (b) 16 (c) 32 ADDITIONAL QUESTIONS (d) determined by the processor used 1. The first general purpose microprocessor ________ 4. Which of the following device identifies the location was developed by Intel Inc. when address is placed in the memory address a) 1011 b) 4004 c) 0386 d) 0486 register? 2. RISC stands for (a) Locator (b) encoder a) Reduced Instruction Set Computers b) Reduced Information Set Computers (c) decoder (d) multiplexer c) Random Instruction Set Computers 5. Which of the following is a CISC processor? d) Reduced Informal System Computers (a) Intel P6 (b) AMD K6 3. CISC stands for (c) Pentium III (d) Pentium IV a) Complete Instruction Set Computers 6. Which is the fastest memory? b) Complex Instruction Set Calculators a) Hard disk (b) Main memory c) Complex Instruction Set Computers (c) Cache memory (d) Blue-Ray disc d) Complete Instruction Set Calculators 7. How many memory locations are identified by a 4. Which of the following is not a RISC computer? processor with 8 bits address bus at a time? a) Pentium IV b) Intel P6 c) AMD K6 d) Pentium II 4. THEORETICAL CONCEPTS OF OPERATING SYSTEM Choose the correct answer. 6. File Management manages 1. Operating system is a A) Files B) Folders A)Application Software B) Hardware C) Directory systems D) All the Above C) System Software D) Component 7. Operating System Interactive provides 2. Identify the usage of Operating Systems A) Graphics User Interface (GUI) A) Easy interaction between the human and comput B) Data Distribution B) Controlling input & output Devices C) Security Management D) Real Time Processing C) Managing use of main memory D) All the above 8. An example for single task operating system is 3. Which of the following is not a function of an A) Linux B) Windows C) MS-DOS D) Unix Operating System? 9. The File management system used by Linux is A) Process Management B) Memory Management A) ext2 B) NTFS C) FAT D) NFTS C) Security management D) Complier ADDITIONAL QUESTIONS 4. Environment Which of the following OS is a 1. _________ is a set of instructions used to perform a Commercially licensed Operating system? specific task in a computer. A) Windows B) FEDORA C) UBUNTU D) REDHAT a) Hardware b) Software c) Program d) Statements 5. Which of the following Operating systems support 2. MS Word and VLC Player are Mobile Devices? a) Application software b) System software A) Windows 7 B) Linux C) BOSS D) iOS c) Databases d) Hardware..3.. A. PRABHAKAR - 9442979144 3. It is a type of computer program that is designed to 6. Which operating system is most commonly used in run the computer’s hardware and application mobile devices? programs. a) Windows b) UNIX a) Application software b) System software c) Linux d) Android c) Databases d) Hardware 7. Expansion of GUI 4. A compiler belongs to which of the following a) Graphical User Internet software? b) Graphical Used Interconnection a) Application software b) System software c) Group User Interface c) Databases d) Hardware d) Graphical User Interface 5. It is a system software which serves as an interface between a user and a computer. a) Application software b) Compiler c) Operating system d) Hardware 5. WORKING WITH WINDOWS OPERATING SYSTEM Choose the correct answer. 4. Windows version designed like a server on the 1) From the options given below, choose the network. operations managed by the operating system. a) Windows 95 b) Windows NT (a) Memory (b) Processes c) Windows 98 d) Windows XP (c) Disks and I/O device (d) all of the above 5. In which windows version the Start button, Taskbar, 2) Which is the default folder for many Windows Windows Explorer and Start menu were Applications to save your file? introduced? (a) My Document (b) My Pictures a) Windows 95 b) Windows NT (c) Documents and Settings (d) My Computer c) Windows 98 d) Windows XP 3) Under which of the following OS, the option Shift + 6. Windows XP was introduced in the year Delete will permanently delete a file or folder? a) 1987 b) 1995 c) 2001 d) 2009 (a) Windows 7 (b) MS-DOS 7. The opening screen of Windows is called (c) Linux (d) Android OS a) Work place b) Desktop c) Icon d) Window 4) What is the meaning of “Hibernate” in Windows 8. The horizontal bar below the desktop is called XP/Windows 7? a) Taskbar b) Scroll bar (a) Restart the Computer in safe mode c) Title bar d) Menu bar (b) Restart the Computer in hibernate mode 9. Which consist of volume control, network, date (c) Shutdown the Computer terminating all the and time etc.? running applications a) Scroll bar b) Control Panel (d) Shutdown the Computer without closing the c) System tray d) Settings running applications 10. In Windows XP and Vista versions, the System icon 5) The shortcut key used to rename a file in windows is called as (a) F2 (b) F4 (c) F5 (d) F6 a) My computer b) This PC ADDITIONAL QUESTIONS c) This computer d) My PC 1. Which version of Windows was introduced as a 11. In Windows 8 and Windows 10 versions, the mouse input device? System icon is called as a) Windows 1.x b) Windows 2.x a) My computer b) This PC c) Windows 3.x d) Windows 95 c) This computer d) My PC 2. Which version of Windows was introduced in 12. Match: Control Panel feature? a. 16-bit - (i) Windows 95 a) Windows 1.x b) Windows 2.x b. 32-bit - (ii) Windows XP c. 64-bit - (iii) Windows 8 c) Windows 3.x d) Windows 95 d. Start button was removed - (iv) Windows 1.x 3. Which version of Windows was introduced the a) (i), (ii), (iii), (iv) b) (iv), (iii), (ii), (i) Concepts of Multitasking? c) (iv), (i), (ii), (iii) d) (ii),(iv),(i),(iii) a) Windows 1.x b) Windows 2.x c) Windows 3.x d) Windows 95..4.. A. PRABHAKAR - 9442979144  6. SPECIFICATION AND ABSTRACTION Choose the correct answer. (b) the responsibility of the user and the right of the 1. Which of the following activities is algorithmic in algorithm. nature? (c) the responsibility of the algorithm but not the (a) Assemble a bicycle. (b) Describe a bicycle. right of the user. (c) Label the parts of a bicycle. (d) the responsibility of both the user and the (d) Explain how a bicycle works. algorithm. 2. Which of the following activities is not algorithmic in 6. If i = 5 before the assignment i := i-1 after the nature? assignment, the value of i is (a) Multiply two numbers (b) Walk in the park (a) 5 (b) 4 (c) Draw a kolam (d) Swapping of two numbers (c) 3 (d) 2 3. Omitting details inessential to the task and 7. If 0 < i before the assignment i := i-1 after the representing only the essential features of the task assignment, we can conclude that is known as (a) 0 < i (b) 0 ≤ i (a) specification (b) abstraction (c) i=0 (d) 0>=i (c) composition (d) decomposition ADDITIONAL QUESTIONS 4. Stating the input property and the input-output 1. In our algorithmic notation, we use _________ to relation a problem is known start a comment line. (a) specification (b) statement a) double dashes (--) (c) algorithm (d) definition b) double underscore (__) 5. Ensuring the input-output relation is c) single dash (-) b) single underscore (_) (a) the responsibility of the algorithm and the right of the user. 7. COMPOSITION AND DECOMPOSITION Choose the correct answer. (a) S1 ; S3 (b) S1 ; S2 ; S3 1. Suppose u, v = 10 ,5 before the assignment. What are (c) S1 ; S2 ; S2 ; S3 (d) S1;S2;S2;S2;S3 the values of u and v after the sequence of 5. If C is true, S1 is executed in both the flowcharts, but assignments? S2 is executed in 1 u := v a) u, v = 5 ,5 (b) u, v = 10 ,5 (1) (2) 2 v := u (c) u, v = 5 ,10 (d) u, v =10,10 2. Which of the following properties is true after the assignment at line 3? 1 -- i, j = 0 2 i, j := i+1, j -1 (a) i + j >0 (b) i + j < 0 3 --? (c) i + j = 0 (d) i = j 3. If C1 is false and C2 is true, the compound statement (a) (1) only (b) (2) only 1 if C1 (c) both (1) and (2) (d) neither (1) nor (2) 2 S1 6. How many times the loop is iterated? 3 else i := 0 4 if C2 while I ≠ 5 5 S2 i := i + 1 6 else (a) 4 (b) 5 (c) 6 (d) 0 7 S3 ADDITIONAL QUESTIONS (a) S1 (b) S2 (c) S3 (d) None 1. An algorithm expressed in a programming language 4. If C is false just before the loop, the control flows is called a _______. through 1 S1 2 while C 3 S2 4 S3 a) Program b) Output c) Control d) Statement 1 S1 2. It is a phrase that commands the computer to do an 2 while C action. 3 S2 a) Program b) Output c) Control d) Statement 4 S3..5.. A. PRABHAKAR - 9442979144  8. ITERATION AND RECURSION Choose the correct answer. 4. Which of the following is not an invariant of the 1. A loop invariant need not be true assignment? m, n := m+2, n+3 (a) at the start of the loop. (a) m mod 2 (b) n mod 3 (b) at the start of each iteration (c) 3 X m – 2 X n (d) 2 x m – 3 x n (c) at the end of each iteration 5. If Fibonacci number is defined recursively as (d) at the start of the algorithm 2. We wish to cover a chessboard with dominoes, the number of black squares and the number of white squares covered by dominoes, respectively, placing a to evaluate F(4), how many times F() is applied? domino can be modelled by (a) 3 (b) 4 (c) 8 (d) 9 (a) b := b + 2 (b) w := w + 2 6. Using this recursive definition{ a n= 1 if n = 0 a x an (c) b, w := b+1, w+1 (d) b := w -1 otherwise how many multiplications are needed 3. If m x a + n x b is an invariant for the assignment a, b to calculate a10? : = a + 8, b + 7, the values of m and n are (a) m = 8, n = 7 (b) m = 7, n = -8 (c) m = 7, n = 8 (d) m = 8, n = -7 (a) 11 (b) 10 (c) 9 (d) 8 9. INTRODUCTION TO C++ Choose the correct answer. 6. Which of the following statements is not true? 1. Who developed C++? (a) Keywords are the reserved words which convey (a) Charles Babbage (b) Bjarne Stroustrup specific meaning to the C++ compiler. (c) Billgates (d) Sundar Pichai (b) Reserved words or keywords can be used as 2. What was the original name given to C++? an identifier name. (a) CPP (b) Advanced C (c) An integer constant must have at least one digit (c) C with Classes (d) Class with C without a decimal point. 3. Who coined C++? (d) Exponent form of real constants consist of two (a) Rick Mascitti (b) Rick Bjarne parts (c) Bill Gates (d) Dennis Ritchie 7. Which of the following is a valid string literal? 4. The smallest individual unit in a program is: (a) ‘A’ (b) ‘Welcome’ (c) 1232 (d) “1232” (a) Program (b) Algorithm 8. A program written in high level language is called as (c) Flowchart (d) Tokens (a) Object code (b) Source code 5. Which of the following operator is extraction (c) Executable code (d) All the above operator in C++? 9. Assume a=5, b=6; what will be result of a&b? (a) >> (b) d) ( ) }t; 2. In C++, the array is a ____ data type. Using above declaration which of the following refers a) Basic b) Derived to seconds. c) User defined d) None of these (A) Time.seconds (B) Time::seconds 3. int num[ ] = {10, 20, 30, 4}; (C)seconds (D) t. seconds The size of the array is 8. Which of the following is a properly defined a) 10 b) 4 c) 5 d) 0 4. float price; - How much memory space is allocated structure? for price in this statement? (A) struct {int num;} (B) struct sum {int num;} a) 3 bytes b) 6 bytes c) 12 bytes d) 24 bytes (C) struct sum int sum; (D) struct sum {int num;}; 5. A character array is 9. A structure declaration is given below. a) String b) Array of strings Struct employee { c) Integer array d) None of these int empno; 6. char str={'5','+','A','B'}; - Write the correct char ename; statement. }e; a) char str[]={'5','+','A','B'}; Using above declaration which of the following b) char str={'5','+','A','B'}; statement is correct. c) both (a) and (b) d) None of these (a) cout