supriya reddy's Profile
Just Born
17
points

Questions
5

Answers
5

  • RE: Architecture of Linux ?
    Just Born Asked on December 25, 2015 in Operating System.


    Figure shows the architecture of Linux operating System , It consist of four layers

    1)      Hardware Layer

    2)      Kernel

    3)      Shell

    4)      Application layer

    Hardware layer – Hardware consists of all peripheral devices (RAM/ HDD / CPU etc) .

    Kernel –  Kernel is a program that acts as task scheduler . It allocates time and Memory to programs and handles the file store and communications in response to system calls, It controls the files who can access the files , for how long users can access the files ,

    Ex – Suppose a user types “ rm my file “ , The shell searches the file store for file containing the program rm , and then request the kernel , through system calls , to execute the program rm on my file

    Shell –   Shell is interface between user and Kernel, Shell is command line interpreter

    shell is a program that takes your commands from the keyboard and gives them to the operating system to perform. In the old days, it was the only user interface available on a Unix computer. Nowadays, we have graphical user interfaces (GUI’s) in addition to command line interfaces (Cl Is) such as the shell

    • 3505 views
    • 1 answers
    • 0 votes
  • RE: How can I validate the form before submitting the form?
    Just Born Asked on December 24, 2015 in HTML5 and CSS3.

    Form

    <form name="empid" id="empid" action="process.php" onsubmit="return formValidation()" method="post">
Name: <input type="text" name="fullname">
<input type="submit" value="Submit">
</form>

    Using Javascript
    For  javascript you can see the attribute onsubmit=”return formValidation()” in the form. The function in this attributes return boolean value , you can see the function definition below. If the boolean value is true form will submit else form will not submit. So you can write any validation in this function, if this function returns true value then only form executes..

    Function definition:

    function formValidation()
{
var y=document.forms["empid"]["fullname"].value;
if (y==null || y=="")
  {
  alert("Full name must be filled out");
  return false;
  }
}
    • 1254 views
    • 1 answers
    • 0 votes
  • RE: What is SCORM?
    Just Born Asked on December 24, 2015 in eLearning World.

    SCORM is a beautiful concept in the elearning world. It is like a package we can use it where ever we want, just like our SIM. We can use SIM in any phones. Similar that if we create the SCORM using authoring tools or custom SCORM Package, We can use it in any famous  LMS.

    Currently LMS eFront, Moodle, BlackBoard e.t.c are utilizing SCORM concept very well and serving elearning world with great re-usability support.

    For more details get in to it mother sites listed below.

    • http://www.adlnet.org/
    • http://scorm.com

    Have any queries on eLearning.. Just comment here..

    • 1444 views
    • 1 answers
    • 0 votes
  • RE: SAMBA Server in Linux
    Just Born Asked on December 24, 2015 in Linux.

    SAMBA is a  File Server to share the files under heterogeneous  environment  . This Service is developed by Andrew Tridgel in 1992 -93 . Samba is also called CIFS(Common Internet File Server/ Sharing).

    Samba uses the SMB protocol to share files and printers across a network connection. Operating systems that support this protocol include Microsoft Windows, OS/2, and Linux

    Samba is useful if you have a network of both Windows and Linux machines. Samba allows files and printers to be shared by all the systems in a network

    With Samba, UNIX files and printers can be shared with Windows clients and vice versa. Samba supports the Session Message Block (SMB) protocol. Nearly all Windows computers include SMB support with their internal network subsystems (NetBIOS in particular).

    Features of SAMBA

    1)       File or directory sharing

    2)      Resource sharing (CDROM / Printers)

    3)      Name resolution

    4)      Browser facility

    5)      User authentication is required

    • 1123 views
    • 1 answers
    • 0 votes
  • RE: Create a working HTML/CSS for the following nested list format?
    Just Born Asked on December 23, 2015 in HTML and CSS.

    HTML Code

    
<!DOCTYPE html>

<html>

<head>

<title>List</title>

<link href="stylesheet.css" rel="stylesheet" type="text/css" />

</head>

<body>

<div class="list">

<ul id="root">

<li>Root</li>

<ul id="child">

<li>Child1</li>

<ul id="subchild">

<li>Child11</li>

</ul>

<li>Child2</li>

<ul id="subchild">

<li>Child21</li>

<li>Child22</li>

</ul>

<li>Child3</li>

<ul id="subchild">

<li>Child31</li>

</ul>

</ul>

</ul>

</div>
</body>

</html>

    CSS Code

    
#root li{

font-weight::bold;

font-family:Arial, Helvetica, sans-serif;

color:red;

text-decoration:underline;

font-size:18px;

}

#child li{

font-weight::bold;

font-family:Arial, Helvetica, sans-serif;

color:red;

text-decoration:none;

font-size:14px;

}

#subchild li{
font-weight::bold;

font-family:Arial, Helvetica, sans-serif;

color:green;

text-decoration:none;

font-size:12px;

}

    • 2024 views
    • 1 answers
    • 0 votes