{"id":17713,"date":"2018-06-29T17:53:22","date_gmt":"2018-06-29T12:23:22","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=17713"},"modified":"2018-12-07T15:06:37","modified_gmt":"2018-12-07T09:36:37","slug":"cbse-question-paper-2018-class-12-informatics-practices","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/cbse-question-paper-2018-class-12-informatics-practices\/","title":{"rendered":"CBSE Question Paper 2018 class 12 Informatics Practices"},"content":{"rendered":"

CBSE Question Paper 2018 class 12 Informatics Practices<\/strong>\u00a0conducted by Central Board of Secondary Education, New Delhi in the month of March 2018. CBSE previous year question papers with solution are available in myCBSEguide mobile app and cbse guide website. The Best CBSE App for students and teachers is myCBSEguide which provides complete study material and practice papers to cbse schools in India and abroad.<\/p>\n

CBSE Question Paper 2018 class 12 Informatics Practices<\/strong><\/p>\n

Download as PDF<\/a><\/strong><\/p>\n

Last Year Question Paper Class 12 Informatics Practices 2018<\/h2>\n

Time allowed : 3 hours
\nMaximum Marks: 70<\/strong><\/p>\n

Instructions :<\/strong><\/p>\n

    \n
  1. All questions are compulsory.<\/li>\n
  2. Answer the questions after carefully reading the text.<\/li>\n<\/ol>\n
    \n
      \n
    1. \n
        \n
      1. ABC Company wants to link its computers in Head office in New Delhi to its office in Sydney. Name the type of Network that will be formed. Which communication media should be used to form this Network? (2)
        \nAns.<\/strong>Type of network that will be formed: Wide Area Network(WAN) Transmission media to be used: Satellite<\/li>\n
      2. Which of the following is\/are not communication media? (2)<\/strong>\n
          \n
        1. Microwaves<\/strong><\/li>\n
        2. Optical Fiber cable<\/strong><\/li>\n
        3. Node<\/strong><\/li>\n
        4. Radio waves
          \nIdentify which of the above-mentioned communication media are Wired media and which ones are Wireless media.<\/strong><\/li>\n<\/ol>\n

          Ans<\/strong>. Not communication media: Node
          \nWired media: Optical Fiber cable
          \nWireless media: Microwaves, Radio waves<\/li>\n

        5. Write two examples each of software in the following categories: (2)<\/strong>\n
            \n
          1. Open Source Operating System <\/strong><\/li>\n
          2. Open Source Web Browser<\/strong><\/li>\n<\/ol>\n

            Ans.<\/strong><\/p>\n

              \n
            1. Linux, Android, FreeBSD, OpenBSD, NetBSD, DragonFly BSD, OpenSolaris, illumos, AuroraUX, Darwin, OpenDarwin, MINIX, FreeRTOS, FreeDOS, Haiku, House KolibriOS, MenuetOS, GNU, ReactOS, L4, Fiasco, Pistachio, Plan 9, AROS, Syllable, Inferno, NuttX, eCos, RTEMS, HelenOS, E\/OS, TempleOS, Linux, BOSS, Ubuntu, Kali Linux<\/li>\n
            2. Mozilla Firefox, Google Chrome, Opera, QupZilla, Midori, rekonq, Tor Browser, NetSurf, Pale Moon, GNOME Web<\/li>\n<\/ol>\n<\/li>\n
            3. Expand the following terms : (2)<\/strong>\n
                \n
              1. GSM<\/strong><\/li>\n
              2. IP<\/strong><\/li>\n<\/ol>\n

                Ans.<\/strong><\/p>\n

                  \n
                1. GSM – Global System for Mobile Communications\/ Global System for Mobile\/ Graphics Stimulator Media<\/li>\n
                2. IP – Internet Protocol<\/li>\n<\/ol>\n<\/li>\n
                3. Name the devices: (2)<\/strong>\n
                    \n
                  1. This device constantly looks at all the data entering and exiting your connection. It can block or reject data in response to an established rule.<\/strong><\/li>\n
                  2. This device connects multiple nodes to form a network. It redirects the received information only to the intended node(s).<\/strong><\/li>\n<\/ol>\n

                    Ans.<\/strong><\/p>\n

                      \n
                    1. Firewall<\/li>\n
                    2. Switch<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
                        \n
                      1. Identify the invalid variable names. State the reason if invalid. (1)<\/strong>\n
                          \n
                        1. Marks Unit<\/strong><\/li>\n
                        2. Product_1<\/strong><\/li>\n
                        3. Sales123<\/strong><\/li>\n
                        4. 2Marks<\/strong><\/li>\n<\/ol>\n

                          Ans.<\/strong> Invalid variable names are :<\/p>\n

                            \n
                          1. Marks Unit
                            \nReason: Variable Name should not contain space<\/li>\n
                          2. 2Marks
                            \nReason: Variable Name should not start with digit<\/li>\n<\/ol>\n<\/li>\n
                          3. Write the data type of variables that should be used to store: (1)<\/strong>\n
                              \n
                            1. Marks of students<\/strong><\/li>\n
                            2. Grades of students(Grade can be \u2018A\u2019 or \u2018B\u2019 or \u2018C\u2019)<\/strong><\/li>\n<\/ol>\n

                              Ans.<\/strong><\/p>\n

                                \n
                              1. float\/ double \/int \/ byte \/ short \/ long<\/li>\n
                              2. char<\/li>\n<\/ol>\n<\/li>\n
                              3. Write examples of any two properties and any two methods of jButton component (2)
                                \nAns.<\/strong> Properties of JButton component :<\/strong>
                                \nBackground, font, label, text, name, editable, enabled, horizontal alignment, border
                                \nMethods of JButton component :<\/strong>
                                \nsetText(), getText(), setEnabled(), setVisible(), setEditable(), setVisible(), isSelected(), setSelected()<\/li>\n
                              4. Write the purpose of HTML. Distinguish between <P> and <BR> tag. (2)
                                \nAns.<\/strong> HTML is used to create web page(s).
                                \n<P> tag is used to introduce a paragraph while <BR> tag is used to introduce a line break on a web page.
                                \nNote: <P> as paragraph tag and <BR> as line break tag to be accepted as difference<\/li>\n
                              5. Distinguish between ComboBox and ListBox. When would you prefer using them over Radiobutton and Checkbox? (2)
                                \nAns.<\/strong> A ComboBox allows selection of one item from a set of items.
                                \nwhile ListBox provides a scrollable set of items from which one or more item(s) may be selected.
                                \nWhen the number of items are more Combobox or ListBox would be preferred over Radiobutton and Checkbox.<\/li>\n
                              6. Rewrite the following code using switch statement: (2)
                                \nif ( code == \u2018A\u2019)
                                \nallowance = 3500;
                                \nelse if ( code == \u2018B\u2019)
                                \nallowance = 3200 ;
                                \nelse
                                \nallowance = 2000 ;
                                \nAns<\/strong>. switch(code)
                                \n{
                                \ncase \u2018A\u2019 : allowance = 3500;
                                \nbreak ;
                                \ncase \u2018B\u2019 : allowance = 3200;
                                \nbreak ;
                                \ndefault : allowance = 2000;
                                \n}<\/li>\n<\/ol>\n
                                  \n
                                1. What is MySQL used for? Abhay wants to start learning MySQL. From where can he obtain the MySQL software ? (1)
                                  \nAns.<\/strong><\/p>\n
                                    \n
                                  1. MySQL is an open source RDBMS used for managing databases.<\/li>\n
                                  2. For obtaining MySQL, Abhay has the following options :\n