The first generation of ISDN is called as a narrowband ISDN and it is based on the use of 64 kbps channel as the basic unit of switching and has a circuit switching orientation. The main device in the narrowband ISDN is the frame relay. The second generation of ISDN is referred to as the broadband ISDN (B-ISDN).
Wednesday 24 February 2016
Narrowband ISDN
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Trunk in networking
Trunk
Trunk (Branches between exchanges) in networking is links which enables to connect many clients from a network through sharing a medium or wire frequency we can take example of tree for better understand of trunk.Tree has a root and many branches whose fulfill their requirement from root.
A trunk is a single transmission channel between two points, each point being either the switching center or the node.
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Telephone Local Loop
What is a 'Local Loop'?
The Local Loop in a telephone network (sometimes referred to as the "last mile" of the network) isthe bit that connects your home to your local telephone exchange. It refers literally to the copper
cables that run from your home to the telephone exchange.
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Tuesday 23 February 2016
Dynamic Array in PHP
The array is a collection of similar data types which occupies continuous location in memory. There are two types of array static and dynamic. In dynamic array size can be decreased and increase as requirement which best uses of memory utilization on the other hand static array is fixed in nature you cannot increase and decrease array capacity when require so it’s not popular in PHP. We deal with mostly dynamic array in PHP.
Dynamic Array example code :
<?php
$ar=array("Red","Green","Blue");
for($i=0;$i<count($ar);$i++)
{
echo "<br>" . ($i+1) . "'st element value " . $ar[$i];
}
?>
for ($i = 0; $i <$10; $i++)
{
array_push($ar,$i);
}
for($i=0;$i<count($ar);$i++)
echo "<h2>" . $ar[$i] . "</h2>";
Example 2:
$ar[]="";for ($i = 0; $i <$10; $i++)
{
array_push($ar,$i);
}
for($i=0;$i<count($ar);$i++)
echo "<h2>" . $ar[$i] . "</h2>";
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Monday 22 February 2016
Thrashing
If the number of frames allocated to a low-priority process falls below the minimum number required by the computer architecture, we must suspend that process's execution. We should then page out its remaining pages, freeing all its allocated frames. This provision introduces a swap-in, swap-out level of intermediate CPU scheduling.
In fact, look at any process that does not have "enough" frames. If the process does not have the number of frames it needs to support pages in active use, it will quickly page-fault. At this point, it must replace some page. However, since all its pages are in active use, it must replace a page that will be needed again right away. Consequently, it quickly faults again, and again, and again, replacing pages that it must bring back in immediately.
This high paging activity is called thrashing.A process is thrashing if it is spending more time paging than executing.
Reason of Thrashing
Thrashing results in severe performance problems. Consider the following scenario, which is based on the actual behavior of early paging systems.
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
SHA1 PHP encryption function
SHA1 accept a string as a key and return hash string which
is encrypted. For decryption key is required, which is used in the encryption.
Syntax
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Sunday 21 February 2016
Preemption in OS
In computing, preemption is the act of temporarily interrupting a task being carried out by a computer system, without requiring its cooperation, and with the intention of resuming the task at a later time. Such a change is known as a context switch. It is normally carried out by a privileged task or part of the system known as a preemptive scheduler, which has the power to preempt, or interrupt, and later resume, other tasks in the system.
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Friday 19 February 2016
Tags - Display HTML code in HTML
There are many times when we want to show HTML tags on our web page mainly when we make some HTML tutorial type application. This enables you to show an HTML code example on your webpage. Following code help you
<xmp>
<h1>Test </h1>
</xmp>
< marquee >
<xmp>
<h1>Test </h1>
</xmp>
< marquee >
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Thursday 18 February 2016
PHP Variable Scope
Local Variable
A local variable is accessible only the block where it has defined. When a code block over then the entire local variable inside of block automatically released by the compiler.
<?php
function fun1()
{
$a=10;
echo $a;
}
function fun2()
{
echo
$a+10;
// Error :
Undefined variable: a because it has not defined in fun2 and a is local
variable for fun1
}
?>
<?php
//fun1();
fun2();
?>
Global Variable
The scope of a PHP variable depends on where it has defined I.e. when a variable is declared in top side of the PHP code block, then it becomes global variable for all PHP code block but not inside of a function.
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Saturday 13 February 2016
M4.1-R4 Application of .NET Technology
Previous Year Solved Sample Papers
Notes By Topics
C#
- C# Programming Practical Questions
- C# Console Application
- C# Window Programming
- C# Tutorial and Notes
- DLL in VB 6.0,VB.Net,C#
- Database Operation in Visual C#
- Store Procedure for SQL Server Using C# and VB.Net
- How to make setup in C# and VB.Net
- Make a numeric Text Box In VB.net and C#
VB.Net
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
M3-R4 Programming and Problem Solving through ‘C’ language
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Internet Technology and Web Design
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
IT Tools and Business Systems
Online Test
Download Free IT Tools and Business Systems offline test free software
Syllabus
Topics
- Computer Basic
- Computer Generation
- Central Processing Unit (CPU)
- Disk Operating System (DOS)
- Electronic Commerce
- Power Point Shortcut Key
- Word Shortcut Key
- Which is better between LCD screen and LED Screen
- Data Communication and Networking
- Input Device
- Output Device
- Computer Memory
- Operating System
- Information and communications technology,G2C,G2B,G2G,G2E,e-Governance,e-Government
Fundamental Questions
Microsoft Office MCQ with Answer
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Thursday 11 February 2016
HTML: Special Characters
Punctuation
|
HTML Entity(case sensitive)
|
ISO Latin-1 code
|
name or meaning
|
–
|
–
|
–
|
en dash
|
—
|
—
|
—
|
em dash
|
¡
|
¡
|
¡
|
inverted exclamation
|
¿
|
¿
|
¿
|
inverted question mark
|
"
|
"
|
"
|
quotation mark
|
“
|
“
|
“
|
left double curly quote
|
”
|
”
|
”
|
right double curly quote
|
'
|
'
|
apostrophe (single quote)
| |
‘
|
‘
|
‘
|
left single curly quote
|
’
|
’
|
’
|
right single curly quote
|
«
» |
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Wednesday 10 February 2016
Java Script Then and Now
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
HTML VS CSS
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Tuesday 9 February 2016
HTML Tutorial
What Is HTML?
HTML is a markup language, not a programming language. In
fact, the term HTML is an acronym that stands
for Hypertext Markup Language. You can apply
this markup language to your pages to display text, images, sound and movie
files, and almost any other type of electronic information. You use the
language to format documents and link them together, regardless of the type of
computer with which the file was originally created.
HTML is written as plain text that any Web browser or word
processing software can read. The software does this by identifying specific
elements of a document (such as heading, body, and footer), and then defining
the way those elements should behave. These elements, called tags, are created by the World
Wide Web Consortium (W3C).
simple HTML page
<html>
<head>
<title>My Second Web Page</title>
</head>
<body>
Place Your Code Here
</body>
</html>
Paragraphs
In
HTML, a paragraph is created whenever you insert text between the <p> tags
<p>This is my first XHTML page.</p>
Headings
HTML
enables you to add six different heading tags to your pages by using the tags <h1><h6>. These tags are very simple to
use.
<h1>This
is Heading 1</h1>
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Saturday 6 February 2016
Object Oriented Programming (OOPS)
Class
In object oriented programming basic working unit start with
a class. Class is a template which comprises all the aspect of an object which
is a instance of a class.
In OOP we first create a class to solve any problem. A Class
is divide into two parts first is Data section other is function or method section.
In data section we get data member which are needed to solve a problem and
function section we implement function section functions are defined which
handle data.
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
Monday 1 February 2016
How to make HTML File using PHP
If you are familiar with C filing programming then your
knowledge will be work here.
Just copy and paste the following complete code and implement your logic as you
want
<?php
if($_POST['submit'])
{
$myfile = fopen($_POST['fnm'].".html", "w") or die("Unable to open file!");
;
fwrite($myfile, $_POST['msg']);
fclose($myfile);
}
?>
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
YouTube HTML 5 Embed iframe code from URL with PHP
Hi folks
I was making a website and my client request me to upload
youtube video on his website. For do this take some fact about youtube video
- When upload video. Youtube provide a unique URL for every uploaded video which user can use to share their video to other platform or other youtube user.
- Iframe is used to show youtube video on other website
- An embedded URL need in iframe SRC
A programmer and Founder of Girfa
IT Services, working from 2009.At Starting computer teaching was my full-time job but after 10 years of teaching I chose to programming as a full-time job and teaching become part-time. In real life, I am very lazy and I made it my coding style I always try to make a reusable component that’s my USP for programming which saves my time and extra working both.
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