networking diagram in local area network

this is the networking

server to client access to another client with the only networking lo

Computer Basics

Introduction

• 1: Getting to Know Computers
• 2: Understanding Operating Systems
• 3: Understanding Applications
• 4: Web Apps and the Cloud

All About the Desktop Computer

• 5: Basic Parts of a Desktop Computer
• 6: Buttons, Sockets and Slots on a Desktop Computer
• 7: Inside a Desktop Computer

Laptop Computers and Mobile Devices

• 8: Laptop Computers and Netbooks
• 9: Getting to Know Mobile Devices

Getting Started

• 10: Setting Up a Computer
• 11: Beginning to Use Your Computer
• 12: Getting to Know the OS
• 13: Connecting to the Internet

Doing More with Computers

• 14: Computer Safety and Maintenance
• 15: Basic Troubleshooting Techniques
   
   

  What are the Different Types of Computers?

  Desktop Computers

   

  When most people hear the word "computer" they think of a personal computer such as a desktop or laptop computer. However, computers come in many shapes and sizes, and they perform many different functions in our daily lives. When you withdraw cash from an ATM, scan groceries at the store, or use a calculator, you're using a type of computer.
  

  

  Many people use desktop computers at work, home, school, or the library. They can be small, medium, or large in style, and usually sit on a desk. Once you add a monitor, mouse, and a keyboard, you have what is typically known as a desktop computer.
  
  Most desktop computers are easy to upgrade and expand, or add new parts. Another benefit of desktop computers is the cost. If you compare a desktop and a laptop with the same features, you will most likely find that the desktop computer is priced lower.
  

  Some desktop computers have a built-in monitor to save space. These are often called all-in-one desktop computers.

  
  

  
  

  Laptop Computers

  
  

  The second type of computer that you may be familiar with is a laptop computer, or laptops as they are often referred to. Laptops are battery or AC-powered personal computers that are more portable than desktop computers, allowing you to use them almost anywhere.
  Since a laptop is smaller than a desktop, it's more difficult to access the internal components. That means you may not be able to upgrade them as much as a desktop. However, it's usually possible to add more RAM or a bigger hard drive.
  
  

  A laptop computer is sometimes called a notebook computer because of its size.

  

  Servers

  A server room

  A server is a computer that "serves up" information to other computers on a network. Many businesses have file servers that employees can use to store and share files. A server can look like a regular desktop computer, or it can be much larger.
  Servers also play an important role in making the internet work: they are where web pages are stored. When you use your browser to click a link, a web server delivers the page you requested.
  

  Other Types of Computers

  Today, there lots of everyday devices that are basically specialized computers, even though we don't always think of them as computers. Here are a few common examples:
  

  The iPad, a type of tablet computer

  • Tablet Computers: These use a touch-sensitive screen for typing and navigation. Since they don't require a keyboard or mouse, tablet computers are even more portable than laptops. The iPad is an example of a tablet computer.
  • Mobile Phones: Many mobile phones can do a lot of things a computer can do, such as browsing the internet or playing games. These phones are often called smartphones.
  • Game Consoles: A game console is a specialized kind of computer that is used for playing video games. Although they are not as fully-featured as a desktop computer, many newer consoles, such as the Nintendo Wii, allow you to do non-gaming tasks like browsing the internet.
  • TVs: Many TVs now include applications (or apps) that let you access various types of online content. For example, you can view your Facebook news feed or watch streaming movies on Netflix

  
  

  
   

How To Make Windows XP Genuine

How To Make Windows XP Genuine

Many of my friends were using Windows XP & had a problem called Genuine ..... So try this trick to make your Windows XP genuine ....  Follow My steps .....  

1) start > run > "  regedit  "

2) go to this path in it as shown 

HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\Windows NT\CurrentVersion\WPAEvents\OOBETimer 
.... and doubleclick on it ....  add any words you want at alphanumeric (Eg : abhi ) ... then press ok and exit the Regedit.

3) Now Goto Start > Run > Copy this code in it 
Code : "  %systemroot%\system32\oobe\msoobe.exe /a  " 

4) Now you will get the activation screen & click on register over telephone, then click on CHANGE PRODUCT KEY, enter in this 

Key:  JG28K-H9Q7X-BH6W4-3PDCQ-6XBFJ 

then click update it will return back..this mean it was updated & Restart your PC .... Now Ur Windows XP is Genuine

LAN CABLE COLOUR COADING

CROSS

 STRAIGHT

TESTING TOOLS

Type Of Tool	TEST MANAGEMENT TOOL	TEST EXECUTION TOOLS	PERFORMANCE MEASUREMENT TOOLS	REQUIREMENTS MANAGEMENT TOOLS
Key Features & Functionalities	Management of Tests	Storing an expected result in the form of a screen or GUI object and comparing it with run-time screen or object	Ability to simulate high user load on the application under test	Storing Requirements
	Scheduling of Tests	Executing tests from a stored scripts	Ability to create diverse  load conditions	Identifying undefined , missing or to be defined requirements
	Management  of Testing Activities	Logging test results	Support for majority of protocols	Traceability of Requirements
	Interfaces to other testing tools	Sending test summary to test management tools	Powerful analytical tools to interpret the performance logs generated	Interfacing with Test Management Tools
	Traceability	Access of data files for use as test data		Requirements Coverage
Example	Quality Center	QTP	Loadrunner	Vect

WHAT IS TYPES OF RAMS PERFORMANCE

Top 5 RAM Related Questions

1. What is dynamic RAM?
2. What is the Difference Between RAM and ROM?
3. What is DVD RAM?
4. What is main memory?
5. What is swapping?

 RAM is Random Access Memory. 







ROM is Read Only Memory.
RAM is the memory available for the operating system, programs and processes to use when the computer is running.
ROM is the memory that comes with your computer that is pre-written to hold the instructions for booting-up the computer.
RAM requires a flow of electricity to retain data (e.g. the computer powered on).
ROM will retain data without the flow of electricity (e.g. when computer is powered off).
RAM is a type of volatile memory. Data in RAM is not permanently written. When you power off your computer the data stored in RAM is deleted.
ROM is a type of non- volatile memory. Data in ROM is permanently written and is not erased when you power off your computer.
There are different types of RAM, including DRAM (Dynamic Random Access Memory) and SRAM (Static Random Access Memory).
There are different types of ROM, including PROM (programmable read-only memory) that is manufactured as blank memory (e.g. a CD-ROM) and EPROM (erasable programmable read-only memory).

swap

(1) To replace pages or segments of data in memory. Swapping is a useful technique that enables a computer to execute programs and manipulate data files larger than main memory. The operating system copies as much data as possible into main memory, and leaves the rest on the disk. When the operating system needs data from the disk, it exchanges a portion of data (called a page or segment ) in main memory with a portion of data on the disk.
DOS does not perform swapping, but most other operating systems, including OS/2, Windows, and UNIX, do.
Swapping is often called paging.
(2) In UNIX systems, swapping refers to moving entire processes in and out of main memory.
(3) When spelled SWAP, an acronym for Shared Wireless Access Protocol.

Types of Topolgis