Saturday, 16 January 2021

Facial Recognition Systems



Introduction

Brief History

Techniques Used

LBP to binary conversion
LBP to binary conversion
Image for post
Histogram sample

Finally, we deduce confidence scores for each set of the image in the dataset and match with the best score.

Further Challenges and Improvements

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Dynamic Programming

 Dynamic Programming (DP) is an algorithmic technique for solving an optimization problem by breaking it down into simpler subproblems and utilizing the fact that the optimal solution to the overall problem depends upon the optimal solution to its subproblems.

Let’s take the example of the Fibonacci numbers. As we all know, Fibonacci numbers are a series of numbers in which each number is the sum of the two preceding numbers. The first few Fibonacci numbers are 0, 1, 1, 2, 3, 5, and 8, and they continue on from there.

If we are asked to calculate the nth Fibonacci number, we can do that with the following equation,

Fib(n) = Fib(n-1) + Fib(n-2), for n > 1

As we can clearly see here, to solve the overall problem (i.e. Fib(n)), we broke it down into two smaller subproblems (which are Fib(n-1) and Fib(n-2)). This shows that we can use DP to solve this problem.

1. Overlapping Subproblems 

Subproblems are smaller versions of the original problem. Any problem has overlapping sub-problems if finding its solution involves solving the same subproblem multiple times. Take the example of the Fibonacci numbers; to find the fib(4), we need to break it down into the following sub-problems:

fib(4)fib(3)fib(2)fib(2)fib(1)fib(1)fib(0)fib(0)fib(1)
Recursion tree for calculating Fibonacci numbers


We can clearly see the overlapping subproblem pattern here, fib(2) has been evaluated twice and fib(1) has been evaluated three times.

2. Optimal Substructure Property 

Any problem has optimal substructure property if its overall optimal solution can be constructed from the optimal solutions of its subproblems. For Fibonacci numbers, as we know,

Fib(n) = Fib(n-1) + Fib(n-2)

This clearly shows that a problem of size ‘n’ has been reduced to subproblems of size ‘n-1’ and ‘n-2’. Therefore, Fibonacci numbers have optimal substructure property.

 

Dynamic Programming Methods 

DP offers two methods to solve a problem.

1. Top-down with Memoization 

In this approach, we try to solve the bigger problem by recursively finding the solution to smaller sub-problems. Whenever we solve a sub-problem, we cache its result so that we don’t end up solving it repeatedly if it’s called multiple times. Instead, we can just return the saved result. This technique of storing the results of already solved subproblems is called Memoization.

2. Bottom-up with Tabulation 

Tabulation is the opposite of the top-down approach and avoids recursion. In this approach, we solve the problem “bottom-up” (i.e. by solving all the related sub-problems first). This is typically done by filling up an n-dimensional table. Based on the results in the table, the solution to the top/original problem is then computed.

Tabulation is the opposite of Memoization, as in Memoization we solve the problem and maintain a map of already solved sub-problems. In other words, in memoization, we do it top-down in the sense that we solve the top problem first (which typically recurses down to solve the sub-problems).

Let us now look at some problems solved with Dynamic Programming.

Check out more articles.

 

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Fibonacci Numbers Using Dynamic Programming

 The following code illustrates the implementation of Fibonacci Numbers using the Dynamic Programming concept. Here we have used two basic principles of DP that is optimal substructure and overlapping behaviour to solve the problem. 

The time complexity of problem is O(n2) and space complexity is O(n) as we are using a 1-d Array.

//Fibonacci Series using Dynamic Programming 

#include<stdio.h> 

int fib(int n) 
{
/* Declare an array to store Fibonacci numbers. */

int f[n+2]; // 1 extra to handle case, n = 0 

int i; 



/* 0th and 1st number of the series are 0 and 1*/

f[0] = 0; 

f[1] = 1; 



for (i = 2; i <= n; i++) 

{ 

    /* Add the previous 2 numbers in the series 

        and store it */

    f[i] = f[i-1] + f[i-2]; 

} 



return f[n]; 

} 



int main () 

{ 

int n = 9; 

printf("%d", fib(n)); 

getchar(); 

return 0; 

} 
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Tuesday, 15 December 2020

Internet of things IOT solved MCQs

  1. Is MQTT a Standard?
    • Yes
    • No


  2. IANA stands for:
    • a. Internal Assessment Numerical Access
    • b. Internet Association Numbers Authority
    • c. International Aid for Network Automation
    • d. Internet Assigned Numbers Authority


  3. Standard port number for secure MQTT is:
    • a. 1883
    • b. 8000
    • c. 8883
    • d. 8888


  4. Is CoAP a IETF standard?
    • True
    • False


  5. Bluetooth 5.0 promises:
    • a. 4x Speed, 2x Range, 2x Data
    • b. 6x Speed, 3x Range, 3x Data
    • c. 2x Speed, 4x Range, 8x Data
    • d. 3x Speed, 4x Range, 8x Data
  1. Terms SSL and TLS stand for:
    • a. Secure Socket Layers and Transport Layer Session
    • b. Secure Socket Layers and Transport Layer Security
    • c. Secure Socket Layout and Transport Level Session
    • d. Session Socket Layers and Transport Layer Session


  2. Which one out of these is not a data link layer technology:
    • a. Bluetooth
    • b. UART
    • c. WiFi
    • d. HTTP


  3. Which transport layer protocols is used by DHCP?
    • a. RSVP
    • b. TCP
    • c. DCCP
    • d. UDP


  4. Which layer is called a port layer in OSI model:
    • a. Session
    • b. Application
    • c. Presentation
    • d. Transport


  5. What is a firewall in computer networks:
    • a. A system designed to prevent unauthorized access
    • b. A web browser
    • c. The physical boundary of network
    • d. The Network Operating System


  6. Router operate at ............ layer of OSI reference model?
    • a. Layer 2 (Data Link)
    • b. Layer 3 (Network)
    • c. Layer 1 (Physical)
    • d. Layer 4 (Transport)


  7. Each IP packet must contain:
    • a. Only Destination IP Address
    • b. Only Source IP Address
    • c. None of Above
    • d. Source and destination IP Addresses


  8. Which one of this is not a networking device:
    • a. Router
    • b. Switch
    • c. Bridge
    • d. Traffic Analyzer


  9. What is the standard length of MAC address:
    • a. 16 bits
    • b. 32 bits
    • c. 48 bits
    • d. 64 bits


  10. What is the use of Ping command:
    • a. To know network speed
    • b. None of the above
    • c. To test a host on the network is reachable
    • d. To test storage device


  11. What is Secure Shell (SSH):
    • a. A router
    • b. A firewall
    • c. A network protocol
    • d. Python Shell


  12. What does VNC stand for:
    • a. Various Network computers
    • b. Virtual Network Computing
    • c. None of the above
    • d. Virtual Network Communication


  13. What is the purpose of bin directory in Linux environment:
    • a. Contains essential device files
    • b. Contains essential binary commands
    • c. Containing configuration files
    • d. Contains user home directories


  14. What is Inter Integrated Communication(I2C):
    • a. An application layer protocol
    • b. A networking communication protocol for multi-master support
    • c. An OS for distributed network communication
    • d. A cellular communication protocol


  15. How many wires does SPI protocol use:
    • a. 2
    • b. 3
    • c. 1
    • d. 4


  16. What does LTE stand for:
    • a. Long Term Errors
    • b. Long Term Evolution
    • c. Lengthy Terminal Estimation
    • d. Long Term Estimates


  17. Which one out of these is not LPWAN technologies:
    • a. SigFox
    • b. WiFi
    • c. NB-IoT
    • d. LoRa


  18. Frequency band used by 802.11 ah standard is:
    • a. 60 GHz
    • b. 2.4 GHz
    • c. Sub 1 GHz
    • d. 5 GHz


  19. Fuzzy Logic is a form of:
    • a. Hexa state logic
    • b. Two-valued logic
    • c. Binary set logic
    • d. Many valued logic


  20. _________ involves predicting a response with meaningful magnitude, such as quantity sold, stock price, or return on investment.
    • a. Summarization
    • b. Clustering
    • c. All of the mentioned
    • d. Regression


  21. Which of the following  language is preferred for IoT analytics ?
    • a. Python
    • b. S
    • c. R
    • d. All of the mentioned


  22. Which one is simplest form of analytics
    • a. Predictive
    • b. Descriptive
    • c. All of the mentioned
    • d. Prescriptive


  23. The method by which companies analyze customer data or other types of information in an effort to identify patterns and discover relationships between different data elements is often referred to as:
    • a. Customer data management
    • b. Data mining
    • c. Data digging
    • d. None of the above


  24. A collection of lines that connects several devices is called ..............
    • a. Bus
    • b. Cable
    • c. Power line
    • d. Transmission Line


  25. A start bit in UART communication is always:
    • a. 1
    • b. Neither of these
    • c. 0


  26. Machine learning is
    • a. The selective acquisition of knowledge through the use of manual programs
    • b. The autonomous acquisition of knowledge through the use of manual programs
    • c. The selective acquisition of knowledge through the use of computer programs
    • d. The autonomous acquisition of knowledge through the use of computer programs


  27. HTTP resources are located by
    • a. unique resource locator
    • b. unique resource identifier
    • c. none of the mentioned
    • d. uniform resource identifier


  28. What is the TCP name for a transport service access point
    • a. none of the mentioned
    • b. node
    • c. pipe
    • d. port


  29. A Denial of Service attack is:
    • a. Connection flooding
    • b. Bandwidth flooding
    • c. All of the mentioned
    • d. Vulnerability attack


  30. A packet sniffer is 
    • a. Active receiver
    • b. Both of the mentioned
    • c. Passive receiver
    • d. None of the mentioned


  31. IPSec provides security at:
    • a. Physical Layer
    • b. Network Layer
    • c. Transport Layer
    • d. Session Layer


  32. WPA is a security mechanism in
    • a. WiFi
    • b. Cloud
    • c. Bluetooth
    • d. Ethernet


  33. Network topology with a central hub or switch is
    • a. Mesh
    • b. Token ring
    • c. Star
    • d. Token bus


  34. Internet domain name and hostname are translated into IP address by
    • a. Domain name system
    • b. Domain name database
    • c. Router
    • d. Domain information system


  35. Which protocol allows user at one site to establish connection to another site and pass keystroke from local to remote host:
    • a. Telnet
    • b. FTP
    • c. IP
    • d. HTTP


  36. How many times setup function runs in Arduino IDE:
    • a. None of the above
    • b. 10
    • c. 2
    • d. 1


  37. How many times loop function runs in Arduino IDE:
    • a. 4
    • b. forever
    • c. 1
    • d. 5


  38. What error occurs when you execute?
    x = abc
    • a. NameError
    • b. SyntaxError
    • c. ValueError
    • d. TypeError


  39. PWM stands for:
    • a. None of the above
    • b. Pulse Width Mode
    • c. Pulse With Modulation
    • d. Pulse Width Modulation


  40. Raspbian is:
    • a. Assembler
    • b. Language
    • c. Compiler
    • d. OS


  41. CGI stands for:
    • a. Common Gateway Interest
    • b. Common Gateway Interrupt
    • c. Common Gate Interference
    • d. Common Gateway Interface


  42. MQTT is:
    • a. Based on client-server architecture
    • b. Based on publish-subscribe architecture
    • c. Based on both of the above
    • d. Based on none of the above


  43. What is the access point (AP) in wireless LAN?
    • a. none of the mentioned
    • b. wireless devices itself
    • c. both (a) and (b)
    • d. device that allows wireless devices to connect to a wired network


  44. In wireless ad-hoc network
    • a. none of the mentioned
    • b. access point is not required
    • c. nodes are not required
    • d. access point is must


  45. Which multiple access technique is used by IEEE 802.11 standard for wireless LAN?
    • a. ALOHA
    • b. CSMA/CA
    • c. CDMA
    • d. none of the mentioned


  46. Which is the correct operator for power(x^y)?
    • a. x^y
    • b. x^^y
    • c. x**y
    • d. None of the mentioned


  47. What is WPA?
    • a. wi-fi protected access
    • b. wired process access
    • c. wired protected access
    • d. wi-fi process access


  48. The answer of 2+3L is:
    • a. 5.0
    • b. 5L
    • c. 5
    • d.  Error


  49. An interconnected collection of piconet is called
    • a. micronet
    • b. scatternet
    • c. mininet
    • d. none of the mentioned


  50. In a piconet, there can be up to _____ parked nodes in the net.
    • a. 511
    • b. 63
    • c. 255
    • d. 127


  51. Secure shell (SSH) network protocol is used for
    • a. remote command-line login
    • b. remote command execution
    • c. all of the mentioned
    • d. secure data communication


  52. The network layer concerns with
    • a. bits
    • b. frames
    • c. none of the mentioned
    • d. packets


  53. Ethernet frame consists of
    • a. none of the mentioned
    • b. IP address
    • c. both (a) and (b)
    • d. MAC address


  54. What is internet?
    • a. interconnection of local area networks
    • b. a vast collection of different networks
    • c. a single network
    • d. none of the mentioned


  55. DNS database contains
    • a. hostname aliases
    • b. hostname-to-address records
    • c. all of the mentioned
    • d. name server records
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Declaration is important before initialization in C, Java.

 C is not a loosely typed language, unlike Python or Perl where variables are dynamically-typed.  What does this mean?

 In Python or in Perl, we do not specify the type of data we assign to a variable, so in course of time, we can assign char, int, float, object values to the same variable without any declaration. The interpreter is smart enough to assign values and judge the type of data value.

An example in Python:

x=45;    x="Rama";    x=4.65

The code in Python works fine.

In C or Java, this is not the case. Here we have to tell the compiler beforehand that what data are you going to assign to a variable name. Accordingly, C or Java compiler will create memory space in the heap and let you assign values. 

This happens due to the fact that C or Java is statically-typed, which means that once you declare a variable with a particular data type you cannot in due course of time change the data-type until and unless the state of the variable is destroyed. Again the memory allocation is not dynamic, thus every time you create a variable the compiler will create some storage-space in the heap and you cannot modify it.

Thus declaration is important before initialization in C and Java.

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Tuesday, 14 July 2020

Solved MCQs on Computer Operator



C’ in CPU denotes-----------?
A. Central (Answer)
B. Common
C. Convenient
D. Computer
E. None of these
Which of the following uses a handheld operating system?
A. supercomputer
B. personal computer
C. Laptop
D. PDA (Answer)
To display the contents of a folder in Windows Explorer you should:
A. click on it (Answer)
B. collapse it
C. name it
D. give it a password
E. None of these
The CPU comprises of Control, Memory and---------------units?
A. Microprocessor
B. Arithmetic/Logic (Answer)
C. Output
D. ROM
A(n)---------------appearing on a web page opens another document when clicked.
 
A. anchor
B. URL
C. hyperlink (Answer)
D. reference
-------------is a windows utility program that locates and eliminates unncessary fragments and rearranges filed and
unused disk space to optimize operations?
A. Backup
B. Disk cleanup
C. Disk Defragmenter (Answer)
D. Restore
---------------is the most important/powerful computer in a typical network?
A. Desktop
B. Network client
C. Network server (Answer)
D. Network station
The software that is used to create text-based documents are referred to as-----------------?
A. DBMS
B. Suites
C. Spreadsheets
D. Word processors (Answer)
---------------devices convert human understandable data and programs into a form that the computer can process?
A. Printing
B. Output
C. Solid state
D. Input (Answer)

What feature adjusts the top and bottom margins so that the text is centered vertically on the printed page?
A. Vertical justifying (Answer)
B. Vertical adjusting
C. Dual centering
D. Horizontal centering
Which of these is not a means of personal communication on the internet?
A. Chat
B. Instant messaging
C. Insta notes (Answer)
D. Electronic mail
What is the overall term for creating editing, formatting, storing, retrieving and printing a text document?
A. Word processing (Answer)
B. Spreadsheet design
C. Web design
D. Database management
Fourth generation mobile technology provides enhanced capabilities allowing the transfer of both------------data,
including full-motion video, high-speed internet access, and video conferencing.
A. video data and information
B. voice and non-voice (Answer)
C. music and video
D. video and audio
Which of these is a point and draw device?
A. Mouse (Answer)
B. Scanner
 
C. Printer
D. CD-ROM
A set of rules for telling the computer what operations to perform is called a--------------?
A. procedural language
B. structures
C. natural language
D. programming language (Answer)
A detailed written description of the programming cycle and the program, along with the test results and a printout of
the program is called-----------?
A. documentation (Answer)
B. output
C. reporting
D. spec sheets
Forms that are used to organize business data into rows and coloumns are called-------------?
A. transaction sheets
B. registers
C. business forms
D. spread sheets (Answer)
In power point, the header and footer button can be found on the insert tab in what group?
A. Illustrations group
B. Object group
C. Text group (Answer)
D. Tables group

A(n)-------------is a set of programs designed to manage the resources of a computer, including starting the computer,
managing programs, managing memory and coordinating tasks between input and output devices?
A. application suite
B.compiler
C. input/output system
D. Operating system (Answer)
E. None of these
A(n)-------------program is one that is ready to run and does not need to be altered in any way.
A. Interpreter
B. High level
C. Compiler
D. Executable (Answer)
What is the name given to those applications that combine text, sound, graphics, motion video, and/or animation?
A. Motionware
B. Anigraphics
C. Videoscapes
D. Multimedia (Answer)
E. None of these
A(n)------------language reflects the way people think mathematically.
A. cross-platform programming
B. 3GL business programming
C. event driven programming
D. functional (Answer)
When entering text within a document, the Enter key is normally pressed at the end of every------------?
A. Line
B. Sentence

C. Paragraph (Answer)
D. Word
E. None of these
Which of the following software could assist someone who cannot use their hands for computer input?
A. Video conferencing
B. Speech recognition (Answer)
C. Audio digitizer
D. Synthesizer
Memory unit is one part of------------?
A. Input device
B. Control unit
C. Output device
D. Central Processing Unit (Answer)
Microprocessors can be used to make----------------?
A. Computer
B. Digital systems
C. Calculators
D. All of the above (Answer)
Which statement is valid about computer program?
A. High level languages must be converted into machine language to execute (Answer)
B. High level language programs are more efficient and faster to execute
C. It is more difficult to identify errors in high level language program than in low level programs
D. All of above

By programmable machine we mean-------------?
A. computers (Answer)
B. modern television
C. washing machines
D. anything that can be set to perform different tasks with suitable programs
Which of the following is a secondary memory device?
A. Keyboard
B. Disk (Answer)
C. ALU
D. All of the above
One of the popular mass storage device is CD ROM. What does CD ROM stand for?
A. Compactable Read Only Memory
B. Compact Data Read Only Memory
C. Compactable Disk Read Only Memory
D. Compact Disk Read Only Memory (Answer)
Identify the true statement about computer.
A. Computers are 100% accurate but it can suffer from GIGO (Garbage In Garbage Out)
B. Computers are reliable because they use electronic component which have very low failure rate
C. Computer is never tired and does not suffer from boredom
D. All of above (Answer)
The programs which are as permanent as hardware and stored in ROM is known as-----------?
A. Hardware
B. Software
C. Firmware (Answer)
D. ROM ware

Which of the following memories must be refreshed many times per second?
A. Static RAM
B. Dynamic RAM (Answer)
C. EPROM
D. ROM
What do you call the translator which takes assembly language program as input & produce machine language code as
output?
A. Compiler
B. Interpreter
C. Debugger
D. Assembler (Answer)
Serial access memories are useful in applications where:
A. Data consists of numbers
B. Short access time is required
C. Each stored word is processed differently
D. Data naturally needs to flow in and out in serial form (Answer)
In---------------mode, the communication channel is used in both directions at the same time?
A. Full-duplex (Answer)
B. Simplex
C. Half-duplex
D. None of the above
Who invented Slide Rules?
A. John Napier

B. William Oughtred (Answer)
C. Gottfried Leibnitz
D. Blaise Pascal
The proper definition of a modern digital computer is------------?
A. An electronic automated machine that can solve problems involving words and numbers (Answer)
B. A more sophistic and modified electronic pocket calculator
C. Any machine that can perform mathematical operations
D. A machine that works on binary code
Memory is made up of-------------?
A. Set of wires
B. Set of circuits
C. Large number of cells (Answer)
D. All of these
Which of the following is the most powerful computers?
A. Mainframe Computer
B. Mini Computers
C. Micro Computers
D. Super Computers (Answer)
Which of the printers used in conjunction with computers uses dry ink powder?
A. Daisy wheel printer
B. Line printer
C. Laser printer (Answer)
D. Thermal printer
In which generation Computers vacuum tube were used?

A. First generation (Answer)
B. Second generation
C. Third generation
D. Fourth generation
IC are classified on the basis of-------------?
A. Manufacturing company
B. Type of computer
C. Number of transistors (Answer)
D. None of these
Submitted by: Humaira (Answer)
What computer virus holds the record for being the most widespread computer virus?
A. I Love You (Answer)
B. Nimdad
C. Melissa
D. Christmas
Process of loading and fixing or bypassing errors in computer program code is called-----------?
A. Debugging (Answer)
B. Defusing
C. Defragmenting
D. Defrosting
CSS stands for----------?
A. Central Superior Services
B. Cascading style sheets (Answer)
C. Both
D. None of above
 
TCP/IP invented by-------------?
A. Robert E. Kahn
B. Vint Cerf
C. Alan turing
D. A & B (Answer)
Smallest font size in MS-word is------------?
A. 6
B. 8 (Answer)
C. 10
D. 12
The World Wide Web was invented by------------?
A. Tim Berners-Lee (Answer)
B. Bob Kahn
C. Steve Jobs
D. Bill Gates
Wifi Stands For-------------?
A. Wireless Fidelity (Answer)
B. Wireless functioning
C. Wireless function
D. None of the above
What is the smallest and largest font size available in Font Size tool on formatting toolbar?
A. 6 and 72
B. 6 and 68
C. 8 and 72 (Answer)
D. 7 and 72
Which of the following is true regarding page Orientation of a Document?

A. Page Orientation can be changed at any time (Answer)
B. Page Orientation of document determines by printer
C. Page Orientation must be set before start typing
D. Page Orientation of a document cannot be changed
Vector graphics is composed of-------------?
A. Pixels
B. Paths (Answer)
C. Palette
D. None of above
Shortcut key for Change case is------------?
A. Shift+F3 (Answer)
B. Ctrl+Shift+F3
C. Ctrl+F5
D. Ctrl+Alt
Rearranging data in a new sequence is known as----------?
A. Uploading
B. Updating
C. Sorting (Answer)
D.Summarizing
Which device is used to process data?
A. CPU (Answer)
B. RAM
C. DCU
D. VDU
Pressing F8 key for three time selects------------?
A. A sentence (Answer)

B. A paragraph
C. A word
D. Entire document
What is the maximum font size you can apply for any character in Ms Word?
A. 160
B. 163
C. 1638 (Answer)
D. 16038
Which of the following types of memory improves processing by acting as a temporary high-speed holding area between
the memory and the CPU?
A. RAM
B. ROM
C. EPROM
D. Cache memory (Answer)
E. Flash memory
Windows 10 was launched in which year?
A. 2012
B. 2013
C. 2015 (Answer)
D. 2014
Which one is not a nickname of a version of Andriod?
A. Honeycomb
B. Cupcake
C. Gingerbread
D. Muffin (Answer)
Operating system is like a------?
A. Government (Answer)

B. Police
C. Parliament
D. All of above
Files created with Lotus 1-2-3 have an extension?
A. 123 (Answer)
B. DOC
C. WK1
D. XLS
How many sheets are there in Excel Workbook by default?
A. 2
B. 3 (Answer)
C. 4
D. 5
Who is the founder of IBM Company?
A. Nolan Bushnell
B. Steve Jobs
C. Thomas J. Watson (Answer)
D. Bill Gates
Shortcut key to create a New Folder on Windows PC is -----------?
A. Ctrl+N
B. Ctrl+Alt+N
C. Ctrl+Shit+N (Answer)
D. None.
The ribbon is used in---------?
A. Laser Printer
B. Plotter

C. Ink-jet printer
D. Dot Matrix printer (Answer)
The word Computer used for the first time in------------?
A. 1613 (Answer)
B. 1614
C. 1615
D. 1616
Compiler can check-----------?
A. Syntax Error (Answer)
B. Logical Error
C. Both Logical and Syntax Error
D. None of these
Computers that are used in large organizations such as insurance companies and banks, where many people frequently
need to use same data, are----?
A. mainframe computers (Answer)
B. super computers
C. hybrid computers
D. desktop computers
The first completely 64-bit compatible version of Android was----?
A. Android 4.0 Ice Cream Sandwich
B. Android 5.0 Lollipop (Answer)
C. Android 3.0 Honeycomb
D. Android 2.3 Gingerbread

In 1940, first electronic computer was invented by-------?
A. Clifford Bery
B. George Boole
C. Atanasoff and Berry (Answer)
D. John V.Atanasoff
In computer, ALU has------------?
A. 2units (Answer)
B. 3units
C. 4units
D. 5units
Android was founded in---------?
A. 2005
B. 2003 (Answer)
C. 2004
D. 2006
How many ways you can save a document in Microsoft word?
A. 3 (Answer)
B. 2
C. 1
D. 5
ISP stands for-----------?
A. internet server provider
B. internal server provider
C. internet service provider (Answer)
D. insta service provider
Handheld computer is also called----------?

A. Palmtop computer (Answer)
B. Laptop computer
C. Notebook computer
D. None of these
Types of e-commerce------------?
A. Business-to-Business (B2B)
B. Consumer-to-Consumer (C2C)
C. Business-to-Consumer (B2C)
D. All of above (Answer)
An Email is a combination of-------------?
A. Name and Address
B. Name and Phone no
C. User Name and Domain Name (Answer)
D. User Name and User id
------------is the process of making changes to a document’s existing content.
A. Creating
B. Editing (Answer)
C. Cutting
D. Forming
A--------------is a collection of data organized in a manner that allows access, retrieval and use of that data.
A. File
B. Recordset
C. Database (Answer)
D. document
DBMS stands for------------?
A. Database management system (Answer)
B. Database maintaince system

C. Database maintaince and storage
D. Database management Sound
SQL is a query language and has types---------------?
A. Data definition language
B. Data manipulation language
C. Data control language
D. All of the above (Answer)
Which of the following is non-available memory?
A. RAM
B. Register (Answer)
C. DRAM
D. PROM
MS-Access is program for------------?
A. Presentation
B. Documentation
C. Calculation
D. Data Base (Answer)
A device through which we enter data in a computer known as -----------?
A. Storage Device
B. Internal Device
C. Prcessing Device
D. Input Device (Answer)
Ctrl+B is used to?
A. To underline the selected text
B. To save the text
C. To Bold the selected text (Answer)
D. To itallic the text

The birthplace of the World Wide Web was----------?
A. NASA
B. Pentagon
C. CERN (Answer)
D. Microsoft
Which language is used to create macros in Excel?
A. Visual Basic (Answer)
B. C
C. Visual C++
D. Java
Which of the following state has been declared as India’s first digital state--------?
A. Kerala (Answer)
B. Karnataka
C. Delhi
D. Mumbai
” Sure Victory ” is a Sri Lankan counter-insurgency operations against the Tamil Tigers in------------?
A. 1995
B. 1996
C. 1997 (Answer)
D. 1998
Components of computer system are?
A. Hardware
B. Software
C. Applications
D. Both A and B (Answer)

Which language does MS-Word use to create Macros?
A. Visual C++
B. Visual Java
C. Visual Basic (Answer)
D. None of the above
FTP stand for----------?
A. File Transfer Post
B. File Transfer Protocol (Answer)
C. File Transit Protocol
D. None of these
In 1999, the Melissa virus was a widely publicized:-------------?
A. E-mail virus (Answer)
B. Macro virus
C. Trojan horse
D. Time bomb
Disk and tape drives are commonly used?
A. Hard copy
B. Soft copy
C. Secondary storage devices (Answer)
D. none of the above
In peer-to-peer networking:
A. there is only one server and many clients
B. there is only one client and many servers
C. every computer is capable of playing the role of server
D. every computer is capable of playing the role of client, server or both at the same time (Answer)
UTP stands for

A. Unshielded Transmission Protocol
B. Unshielded Twisted Pair (Answer)
C. Unshielded Transfer Pair
D. Unshielded T-line Protocol
OCR stands for------------?
A. Output Character Recorder
B. Output Character Recognition
C. Optical Character Recorder
D. Optical Character Recognition (Answer)
DVD Stands For:----------?
A. Digital Versatile Disk (Answer)
B. Digital Versatile Drive
C. Digital volume disk
D. Digital Video drive

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