Register No. ம ந ல தல ஆ / HIGHER SECONDARY FIRST YEAR PART - III கண ன அற வ ய / COMPUTER SCIENCE. (தம ம ஆ க ல வழ / Tamil & English Version)
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1 Register No. ம ந ல தல ஆ / HIGHER SECONDARY FIRST YEAR PART - III கண ன அற வ ய / COMPUTER SCIENCE (தம ம ஆ க ல வழ / Tamil & English Version) [ நர : 2.30 மண ] [ ம த மத ப க : 70] [Time Allowed: 2.30 Hours] [Maximum Marks: 70] அற ரக : (1) அ ன வ ன க சrய க பத வ க உ ளத எ பத ன சrப க ள. அ பத வ றய ப, அ ற க க ண ப ளrட உடன ய க தrவ க. (2) ந ல ம க மய ன ம ம எ வத, அ க வத பய ப த வ. பட க வ ரவத ப ச பய ப த. Instructions: (1) Check the question paper for fairness of printing. If there is any lack of fairness, inform the Hall Supervisor immediately. (2) Use Blue or Black ink to write and underline and pencil to draw diagrams. ப r I / SECTION I
2 ற : (i) அ ன வ ன க வ டயள க = 15 (ii) க க ப ட ந வ டகள ம க ஏ டய வ டய ன த த, ற ய ட வ டய ன ச எ த. Note: (i) All questions are compulsory. (ii) Choose the most suitable answer from the given four alternative and write the option code and the corresponding answer. 1. இர ட த ல ற கண ப ற ய பய ப த ய க ய எ ன? (அ) வ ற ட ழ (இ)ஒ க ம க (ஆ) ர ச ட (ஈ) சயல Which component is used in the Second generation computers? (a)vacuum tube (b)transistor (c)integrated Circuits (d)microprocessor 2.ப வ எ த ற றய Unicode ஒ க ண க ப ள? (அ)BCD (இ)EBCDIC (ஆ)ASCII (ஈ) ISCII Which one of the following coding system is integrated with Unicode? (a)bcd (b)ascii (c)ebcdic (d)iscii 3. ப க a)cd ROM GB
3 b)dvd GB c)flash ந னவக d)blu ray disc 4. 2 TB MB (அ) 3214 (ஆ)3142 (இ)4123 (ஈ) 1234 Match the following a)cd ROM GB b)dvd GB c)flash memory MB d)blu ray disc 4. 2 TB (a) 3214 (b) 3142 (c) 4123 (d) ப வ வனவ Linux க அ ம எ? (அ)NTFS (இ) நர பக (ஆ)DAT (ஈ) EXT2 Which one of the following is the file system of Linux? (a) NTFS (b)dat (c) Time sharing (d)ext2 5.க ழ க க ப டவ எ Google உ வ க ப ட? (அ)Android TV (இ)Android wear Which of the following was developed by Google. (a)android TV (c)android wear (ஆ)Android Auto (ஈ) இ வ அ ன (b)android Auto (d)all the given 6. Windows 10- எ த பண ற Windows XP ய My Computer ஒ ளத? (அ)PC (இ)Computer (ஆ)My PC (ஈ) This PC
4 Which icon in Windows 10 is same as My Computer in Windows XP? (a) PC (b)my PC (c)computer (d)this PC 7. கண ப ற அ ம ப உ ள வ இய க க ள ப வய ட எ த பண ற ய க ள ச ய வ? (அ)Computer (இ)Drive icon (ஆ)My Computer (ஈ) Device driver Which icon is clicked to see disk drives mounted in the system (a)computer (b)my Computer (c)drive icon (d)device driver 8.Windows- உ ள Ms-Excel ஒ த Ubuntu வ உ ள க ட ந ல பய ப எ? (அ)அ டவ ண சயல (இ)ஓப ஆஃப க (ஆ)ல ர ஆஃப (ஈ) ட ஆஃப க The default application in Ubuntu similar to MS-Excel in Windows is (a)spreadsheet (b)libre Office suite (c)open Office calc (d)star office calc 9.ம த ப த i:=7 என, i:=i*2 எ பத மத ப த ப iய மத எ ன? (அ)2 (ஆ)7 (இ)14 (ஈ) 49 If i:=7 before the assignment, i:=i*2. The value of i after the assignment is (a) 2 (b)7 (c)14 (d) மத ப த பற வr 1 ம 3 ம ற க m ம n- மத க ய வ? 1. m,n:=120,150
5 2. m.n =?,? 3. m,n:= m+3, n m.n =?,? (அ)123 ம 153 (ஆ)123 ம 149 (இ)153 ம 119 (ஈ) 120 ம 150 What are the values of variables m and n after the assignments in line1 and line3 1. m,n:=120, m.n =?,? 3. m,n:= m+3, n m.n =?,? (a)123 and 153 (b)123 and 149 (c)153 and 119 (d) 120 and இலவச ல ற ற ய க ள ம ப ள ற ப (அ) source (இ) Open source (ஆ) Source code (ஈ) Anytime source Which refers to the software in which the source code is available for free (a) source (b)source code (c)open source (d) Anytime source 12.ஒ வ ண ந ர ல அத க வ வர ப ந லக ட வ வr ப (அ)ஒ க ண த (c)அ வம க (ஆ)ப r த (ஈ) ம வ ரய த Expanding each sub-program into more detailed steps is known as (a) Composition (b) Decomposition (c)abstraction (d)refinement 13.ப பட த க ப ட ற ச ன (அ)த ம ன ப (இ)வ ட (b) ச வக (ஈ) ந வ ட A condition in a flowchart is represented by a shape like
6 (a) Diamond (c)circle (b)rectangle (d) Oval 14.U க க ப ட, v:=u+3,v+3, எ ற இத எ ம ற ல? (அ)u-v (இ)u+v (ஆ)uv (ஈ) u/v Given u,v:=u+3,v+3, which of the following is invariant? (a) u-v (b)uv (c)u+v (d) u/v 15.மட ட அத க த ட டய த ற ம சய ற வ வ த ழ ப எ? (அ)மட (இ)ம ழ ச (ஆ)மட ம றம ல (ஈ) ஒ க ண த The algorithm design technique closely related to iteration but more powerful is (a)iteration (b)loop invariant (c) Recursion (d)composition ப r II / SECTION II ஏ த ஆ வ ன க வ டயள க. அவ ற வ ன எ 24 க ப க வ டயள க. Answer any Six questions. Question No. 24 is compulsory. 6 2 = வ rவ க த க (அ) BIOS (ஆ) ENIAC (இ) RAM (ஈ) ALU Expand (a)bios (b)eniac (c)ram (d)alu 17. A ம Z எ ற ற க ASCII ற ய ட த க? Give ASCII codes for the characters A and Z? 18. ற வ ரக-AND வ ய Write note on AND gate.
7 19. GUI எ ற எ ன? What is GUI? 20. Windows XP ய உ ள இர வ கய ன ச ளர க ய வ? What are the two types of windows available in Windows XP? 21. ந ப த ன ம ற ஆக யவ இ ட ய உ ள வ ப ட எ க. Distinguish between a condition and a statement 22. Ubuntu-வ த ட க எ ற எ ன? What is a Launcher in Ubuntu? 23. சய ற ம சய ப வ ப க. Distinguish between an algorithm and a process. 24.மட ம றம ல எ ற எ ன? எ க த க. ம ழ ச ச க த எ ற எ ன? எ க த க. What is a loop invariant? Give example What is recursive problem solving? Give example ப r III / SECTION III ஏ த ஆ வ ன க வ டயள க. அவ ற வ ன எ 33 க ப க வ டயள க. Answer any Six questions. Question No. 33 is compulsory. 6 3 = த ட க சய ப க ன ப ந லக ள எ க. Write the sequence of steps in boot process? 26.இர ந ர ப க டற க (அ) -22 (ஆ) -35 Find 2 s complement of (a)-22(b) ர வ ற வ ரக.
8 Write briefly about Blu-ray disc. 28.Android இய க அ ம ப ற வ ரக. Write a note on Android Operating System. 29. switch user ம log off இ ட ய உ ள வ ப ட எ க. Differentiate between switch user and log off. 30. b:=a+5 ம b=a+5 எ ற க இ ட ய உ ள வ த ய ச எ ன? What is the difference between the statement b:=a+5 and b=a க க ப ட இர எ கள ச ற ய எ ண க டற ய வ ரய ற ம சய ற ய எ க. Write the specification and algorithm to find the minimum of two given numbers. 32. ப வ வனவ (S1,S2,S3,S4 &S5 ஆக ய வ கள ) க ப ப வ எ க a,b 3 S1 4 case a=b 5 S2 6 case a>b 7 S2 8 else 9 S4 10 S5 த ட க த a=200 ம b=30 என க ப ப க ள எ த. Given the following (S1,S2,S3,S4 &S5 are statements) Write the control flow a,b 3 S1 4 case a=b 5 S2 6 case a>b
9 7 S2 8 else 9 S4 10 S5 Initially if a=200 and b=30, Write the statements through which the control flows. 33. ர ஜ வ ரம த தன ட இர ம ய வ க இ தன. ஒ வ ள க வத ள த 19 த லக ள வ ன, ம 13 த ய த லக உ வ. ம ற வ ள ல 7 த லக ள வ ன 22 த ய த லக உ வ. அ ன த லக வ ட ப ட வத ள இற வ. வத ள த 1000 த லக எ ற அ எ ப அழ? ( ற - த லகள எ ண க ற ம 3 எ ப ஒ ம ற ல ய ) த n இய எ க க ன த ல க டற ய மட சய ற ய வ வ ம க. S= n King Vikramaditya has two magic swords. With one, he can cut off 19 heads of a dragon, but after that the dragon grows 13 heads. With the other sword, he can cut off 7 heads, but 22 new heads grow. If all heads are cut off, the dragon dies. If the dragon has originally 1000 heads, can it ever die? (Hint:The number of heads mod 3 is invariant.) Design a iterative algorithm to find sum of first n natural numbers. S= n ப r IV / SECTION IV அ ன வ ன க வ டயள க 5 5 = 25
10 Answer all questions. 34.ஒ கண ன ய க ய ப த க ள வ ரபட ட வ வr. க க டவ ற இ ம எ ண க ம ற ப பத ன ந ல எ ண க ம க (அ) 456 (ஆ) 855 Explain the basic components of a computer with a neat diagram. Convert the following to binary, then convert the binary number to hexadecimal (a)456 (b) Bubbled AND ம Bubbled OR வ ய க ள வ வr. (அ) க க ர வக எ ற எ ன? அ த எ வ அளவ வ? (ஆ) ச அள எ ற எ ன? (இ) MDR எ ற எ ன? Explain Bubbled AND, Bubbled OR gates. (a)what is a clock speed? How it is measured? (b)what is a word size? (c)what is MDR? 36.ந க ய வ க ம க றக ள எ வ நக எ ப? y = 5 ( 3)( 1) எ ற க வய x- மத க க ப ட Y- ய மத ப க. சrய ன சய ற வ ரய ற ய எ. How will you copy files and folders to removable disk? Suppose you want to evaluate y for value of x using the expression y = 5 ( 3)( 1) Write suitable algorithm specification
11 37. Factorial(3) க ன சய றய ஒ வ ப ந ல க ன வள ய ட க டற Factorial(n) inputs: n is an integer, n outputs: F=n! F,i:=1,1 While i<n F,i:=F*i, i+1 a b க டற ய மட ற பய ப த வ ரய ற ம சய ற ய எ க. Trace the step by step execution of the algorithm for Factorial(3) Factorial(n) inputs: n is an integer, n outputs: F=n! F,i:=1,1 While i<n F,i:=F*i, i+1 Write specification and algorithm using iterative statement to find a b. 38. மட ம ற ல ப ற வ வr. அ க ன ப வ ம ம ழ ச றய வ ரய த
12 ம சழ ச சய ற ய இ த வ ரய ப பய ப த எ க. a 10 - கண க ட எ த ன ப க க த வ ப க ற. வ ர பட ட வ ள க. Briefly discuss about loop invariant. Power can be defined recursively as Construct a recursive algorithm using this definition. How many multiplications are needed to calculate a 10? Illustrate by a diagram.
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