SHRI VIDHYABHARATHI MATRIC HR. SEC. SCHOOL

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1 i.ne ww.pai.n i.n i.ne SHRI VIDHYABHARATHI MATRIC HR. SEC. SCHOOL SAKKARAMPALAYAM, AGARAM (PO), ELACHIPALAYAM TIRUCHENGODE (TK), NAMAKKAL(DT) 67 0 CELL: ,94477 XI - STANDARD COMPUTER SCIENCE ( NEW SYLLABUS ) COMMON QUARTERLY EXAMINATION - SEP - 08 SECTION - I Q. NO ANSWER KEY MARKS CHOOSE THE CORRECT ANSWER X5=5 B) B) Finger Print Scanner c) ^40 4 a)a 5 c)universal Gates 6 c)a6 7 c) Pentium III 8 b) M.S word 9 a) Windows XP 0 a) Graphical User Interface c) Pits a) Firebox b) 0<=i 4 a)s;s i.n i.ne i.n i.ne 5 b) m =7,n=-8 SECTION - II 6. High cost unemployment can t think out of box can t feel compassion and sympathy High dependence on machines 7. Reason: NO.Octal number contain only (0 to 7)Numbers. 8. Dynamic RAM (DRAM) Dynamic RAM being a common type needs to be refreshed frequently. Static RAM (SRAM) Static RAM needs to be refreshed less often, which makes it faster. 9. Software is set of instruction that perform specific task. Application Software System Software 0. Click Point to the item on the screen, press and release the left mouse button. Double- click Point to the item on the screen, quickly press twice the left mouse button.. Recycle bin is a special folder to keep the files or folders deleted by the user, which means you still have an opportunity to recover them.. Pseudo code is a mix of programming language- like constructs and plan English. This notation is not formal nor exact. It uses the same building blocks as programs, such as variables and control flow.

2 i.ne ww.pai.n. An expression involving variables, which remains unchanged by an assignment to one of these variables, is called an invariant of the assignment. 4. Multiple applications which can execute simultaneously in windows is known as Multitasking. SECTION - III 5. Finger print Scanner is a fingerprint recognition device used for computer security,fingerprint recognition feature that uses biometric technology. Fingerprint Reader / Scanner is a very safe and convenient device for security instead of using passwords, vulnerable to fraud and is hard to remember. 6. i) BCD Binary Coded Decimal ii) ASCII American Standard Code for Information Interchange iii) DLNN - Deep Learning Neural Networks 7. i) OR - Operator ii) iii) i.n i.ne i.n i.ne i.n i.ne 8. CACHE MEMORY FLASH The cache memory is a very high speed and expensive memory, which is used to speed up the memory retrieval process. Flash memory is an electronic (solidstate) non-volatile computer storage medium that can be electrically erased and reprogrammed. 9. Android is a mobile operating system developed by Google, based on the Linux and designed primarily for touch screen mobile devices such as smart phones and tablets. (i) Oreo (ii) Marshmallow (iii) Nougat (iv) Kitkat (v) lollypop (vi) cupcake 0. Switch user i)switch to another user account on the computer without closing your open programs and Windows processes. Log off ii) Switch to another user account on the computer after closing all your open programs and Windows processes. Restart iii) Reboot the computer.

3 i.ne ww.pai.n. Ubuntu Linux Linux Mint Arch Linux Deepin Fedora Debian CentOS. Advantages Disadvantages Provides the advantage of quick Problem of reliability response Avoids duplication of software. Questions of security and integrity of uses programs and data. Reduces CPU idle time. Problem of data communication. Many application can run the same It consume much resource time. The cpu is not idle constraint on security and integrity of data. (i) Gives reminders based on time, places or people (ii) Track packages, teams, interests and flights. (iii) Send s and texts. (iv) Find facts, files, places and information (v) Open any application on your system SECTION - IV 4. First Generation Vacuum tubes or i.n i.ne i.n i.ne Second Generation Transistor i.n i.ne Third Generation Integrated Circuits (IC) Fifth Generation till date Sixth Generation In future Parallel and Distributed computing Explain each one of them i) Data: Data is defined as an unprocessed collection of raw facts, suitable for communication, interpretation or processing. ii) Hardware: Hardware is the physical component of a computer like motherboard, memory devices, monitor, keyboard etc., iii) Natural Language Processing Natural Language Processing is the ability of a computer program to understand human language. It is a component of artificial intelligence. iv) Types Of Memory: The primary memory is used to temporarily store the programs and data when the instructions are ready to execute.

4 i.ne ww.pai.n Random access Memory(RAM) The secondary memory is used to store the data permanently. The Secondary memory is non volatile, that is, the content is available even after the power supply is switched off. Hard disk, CD-ROM and DVD ROM are examples of secondary memory. v) Bit The most basic unit of information in a digital computer is called a bit. A bit is a binary digit which can be 0, or. 5. AND gates: Not Gates NAND Gates Y = A. B OR gates Y = A + B Y = A NOR Gates or i) ii) 000 iii) iv) v) Read Only Memory (ROM) Programmable Read Only Memory (PROM) Erasable Programmable Read Only Memory (EPROM) Electrically Erasable Programmable Read Only Memory (EEPROM) Explain each one of them or i.n i.ne ADVANTAGES OF OPEN SOURCE SOFTWARE: it is generally free and you don t have to pay for using. ii) Created by skillful and talented people iii) Highly reliable. iv) Help you become more flexible v) Open source software provides great platform for innovations and creativity DISADVANTAGES OF OPEN SOURCE SOFTWARE: i) Vulnerable to malicious users. ii)most interfaces are not so user- friendly and easy to use. iii) Don t come with extensive support. i.n i.ne i.n i.ne 5

5 i.ne ww.pai.n 7 i.n i.ne iv) Open source software is hard to learn. It is not straightforward to use. v) many of the latest hardware that are being produced is incompatible. or quadratic_solve (a, b, c) -- inputs : a,b,c all are the real numbers, a 0 -- outputs: x is a real numbers such that b - 4ac > 0 i.n i.ne i.n i.ne

6 i.ne ww.pai.n 8. (i) or i.n i.ne = (000) = (00) 8 bit format of -8 0 = 00 8 bit format of -5 0 = (ii) =() =(00) 8 bit format of -6 0 = bit format of -4 0 = Windows Linux Unix Explain each one of them i.n i.ne DEPARTMENT OF COMPUTER SCIENCE SHRI VIDHYABHARATHI MATRIC HR. SEC. SCHOOL SAKKARAMPALAYAM, AGARAM (PO), ELACHIPALAYAM TIRUCHENGODE (TK), NAMAKKAL(DT) 67 0 i.n i.ne CELL: , ½ ½