DOS VS WINDOWS

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What is OSI Model in networking?

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1.  OSI Model  stands for Open System interconnection model. 2.  OSI Model  defines how data is transferred from one computer to another computer. 3. In a very basic scenario two computers connected with a LAN and connectors transfer data using the NIC. This forms a computer network, however if both the system uses different operating systems, for example one system runs on windows and other one runs on MacOS then how can data be transferred between these two different systems, here comes the role of a OSI model which is a seven layered model that defines how a data can be transferred between different systems. 4.  OSI model  was introduced by International Organisation for standardisation (ISO) in 1984. 5. There are  seven layers  in a OSI model Application layer Presentation Layer Session layer Transport layer Network Layer DataLink layer Physical layer Physical Layer We now learned that a transport layer converts the data into segments, network...
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MICROSOFT EXCEL SHORTCUT KEYS

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Microsoft Excel shortcut keys Shortcut Description Tab Move to the next  cell , to the right of the currently selected cell. Ctrl+A Select all  contents of a worksheet. Ctrl+B Bold  all cells in the highlighted section. Ctrl+C Copy  all cells in the highlighted section. Ctrl+D Fill down. Fills the cell beneath with the contents of the selected cell. To fill more than one cell, select the source cell and press  Ctrl+Shift+Down  to select multiple cells. Then press  Ctrl+D  to fill them with the contents of the original cell. Ctrl+F Search  current sheet. Ctrl+G Go to a certain area. Ctrl+H Find and replace. Ctrl+I Puts  italics  on all cells in the highlighted section. Ctrl+K Inserts a  hyperlink . Ctrl+L Opens the  Create Table  dialog box. Ctrl+N Creates a new workbook. Ctrl+O Opens a workbook. Ctrl+P Print the current sheet. Ctrl+R Fill right. Fills the cell to the right with the contents of the...
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MICROSOFT WORD SHORTCUT KEYS

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Microsoft Word shortcut keys Shortcut Description Ctrl+0 Toggles 6 pts of spacing above the  paragraph . Ctrl+A Select all contents of the page. Ctrl+B Bold  highlighted selection. Ctrl+C Copy  selected text. Ctrl+D Open the  font  preferences window. Ctrl+E Aligns the line or selected text to the center of the screen. Ctrl+F Open find box. Ctrl+I Italic  highlighted selection. Ctrl+J Aligns  the selected text or line to justify the screen. Ctrl+K Insert a  hyperlink . Ctrl+L Aligns the line or selected text to the left of the screen. Ctrl+M Indent the paragraph. Ctrl+N Opens new, blank document window. Ctrl+O Opens the dialog box or page for selecting a file to open. Ctrl+P Open the print window. Ctrl+R Aligns the line or selected text to the right of the screen. Ctrl+S Save the open document. Like Shift+F12. Alt+F , A Save the document under a different file name. Alt+X Show the  Unicode  code of a highlighted c...
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