CCNA Part-1

What is Network?

When we start networking we all are know CCNA is a basic course of Networking then first question comes out what is Network.कोई भी घर या Mobile Users,Computers या आजकल जितनीभी Companies है वह एक Network से जुडी है। अगर आपने दो Computers भी आपस में जोड़ रखे है तो वह भी एक Network है,और अगर आप पूरी दुनिया को भी देखते है एक दूसरे से कनेक्टेड है जैसे हमारा कोई दोस्त है जो अमेरिका में बैठा है और हमसे Facebook पर Chat कर रहा है आपस में तो हम दोनों भी एक Network में हैं। 

Network as small as two computers or the Network as largest the whole world is connected to each others.It means network is two type a small network and a large network.But as a definition of network any devices which is connected to each others that is called network.

What is Networking?

When connected devices in a network share data or resources with each other that is called networking.

For examples we are sending files to someone or say hi to our friends on Facebook & show message other side then this process sharing.

The process of sharing the data between the network is known as networking.

Softwares

Softwares

Games PUBG

Games

Smartphone Tips & Tricks

Downloads

Downloads

Firewalls

Firewall

CCNA

CCNA 

1 -Introduction of Cisco Certified Network Administrator

Blog Goal - To provide knowledge and skill necessary to install,configure and operate small to medium-sized networks.

1. Networking Basics - अगर आपको CCNA करना  है तो आपको Basic Computer का नॉलेज होना चाहिए और आप थोड़ा इंटरनेट का प्रयोग करते हो और थोड़ा IP Address के बारे में पता हो। 

1.Basic Computer literacy
2.Basic PC Operating Skills
3.Basic Internet usages skills
4.Basic IP Addressing knowledge

Expand your knowledge with Professional Options and advance your career goal.

First level in Cisco certification is Entry level that means Cisco certified entry network technician that is one exam Interconnecting Cisco networking device part 1.
Second level in Cisco certification is Associate level which is two paper ICND Part 1 & ICND Part 2  which we know that CCNA(Cisco Certified Network Associate).
We have clear two exam  ICND 1 & ICND 2 for CCNA but in India  mostly student can doing their CCNA with one exam and give their both paper in one exam.Then our first level is Associate level which is mixer of ICND 1 & ICND 2.
Then we have next the  level is CCNP this is a pre request course for other tracks like CCNA security,CCNA Wireless ,CCNA Routing & Switching.In internet there is a website www.cisco.com where you can learn basics about networkings cisco equipment & applications.

Cisco Icons and Symbols

Router

Router is a device which is connect city to city or connect different countries with each others. Later we learn more about.

Switch

Switch is device which connect computers with each others in schools,offices or labs.

Multi layer Switch                                                             

Multi layer switch works` as routing and switching.

Above such types of symbols wireless connectivity, Line: serial & Line: Ethernet cables.
एक तरह से केबल्स है जो कनेक्ट करती है।

Security

Security -

Printer Peripherals

Printer Peripherals

Software

Software

Hardware

Computer Hardware inside a computer tangible parts which we can see touch such as Cabinet,CPU,Monitor,keyboard,Mouse,Motherboard,Lan card,Graphic card,SMPS & Sound card etc.

Linux Tutorial

Linux Tutorial

Microsoft Windows

Windows

Block Diagram of a computer/What is Hardware & Software of Computer

Block Diagram of a computer.

Block Diagram of a computer

Figure shows the block diagram of a typical computer.The major parts are the central processing unit or CPU,primary and secondary memory and input / output devices.

Central Processing Unit

The CPU or Microprocessor is the heart of the computer,which control the basic operations inside computer.It fetches the binary-coded instructions from the memory,decodes the instructions into a series of simple actions, and carries out these actions. The CPU includes an arithmetic logic unit (ALU), which can perform arithmetic and logical operations on binary words when instructed to do so.CPU contains registers for temporary storage.CPU also contains an address counter which is used to hold the addresses of the next instructions.General purpose resister (GPU) which are used for temporary storage of data.

Memory

The purpose of memory is to store the binary instructions to be executed by the computer. It also store binary data which the computer process. The size of the memory determines the amount of memory we can use for programs and data. There are two types of memory -RAM and ROM.

Random Access Memory(RAM)

This is a volatile type of memory, meaning that the content of memory is lost when power is not present.This is made of Dynamic RAM technology and is installed as modules to the memory slots present in the motherboard.

Read Only Memory (ROM) 

This is a non volatile type of memory.That means the content of the memory is not lost when if power is not present.This is generally used of firmware IC. Firmware is the term given to Programs stored in the ROMs or in other devices, which keeps their stored information when the power is tuned off.

Secondary Memory 

Secondary memory is used to represent other data storage devices of the computer system like Hard disk drive,floppy drive, CD drive etc.

Difference between main memory and secondary memory.

• The main memory is often volatile whereas the secondary memory is permanent memory.
• The capacity of main memory is often less than the secondary memory.
• The speed of main memory is very high compared to secondary memory.

Main memory is made of semiconductor technology whereas the secondary storage device work based on magnetic (eg in HDD,FDD or magnetic tape drives) or optical principal (like CD ROM or DVD Drives)

When power on the computer Operating system stored in hard disk drive is copied to main memory.This process is called booting.

Computer /Computer full form

Computer -An Overview

Computer = A computer is a device that can be instructed to carry out sequence of arithmetic or logical  operations automatically via computer programming.

Full Form of COMPUTER, which is said to be Common Operating Machine Particularly Used for Trade, Education, and Research. Computer is essentially derived from the word 'compute', which basically means 'calculate'.

Computer -An Overview

In a computer there are two part Hardware and Software.

Hardware                                             Software         

Server                                                  System Software 
PC/Client                                            Application Software  

Hardware - All the physical components that you can see,touch or feel ,inside a computer or related  peripheral,can be classified as Hardware.
Ex - MBD ,Processor , Ram etc.

Software -  A Set of programs is called as software.Software is kind of two types.

 System Software - The set of programs that controls the function of the Hardware (the system) is    called as system software. They are commonly known as operating systems.Such software allows a user to load and execute programs. It controls the peripheral devices and allocates resources to users in case of a multi-user environment.
Ex. -MS-Dos,Microsoft windows 10,Linux,Unix

Application Software -The set of  programs that are written for the purpose of performing a specific application like Billing,Payroll management etc are called as application software.
Ex.- MS Word ,Adobe Acrobat Reader ,Adobe Photoshop.

In this Blog post we describe about Computer basics concept like types of computer & their application.                                             

Networking in computer

What is the Networking or Network.

You all know aware about network or networking but both are different term in definition.Let,s start some basic idea about our computer network or computer networking.

Networking 

Networking is the process of connecting,securing,maintaining ..etc the network.

Networking Diagram

Network 

Computer network is a digital telecommunications network which allows nodes to share resources.

Diagram of a Network

A Network is a group of computers connected with each other to share the resources such as data and files sharing,device sharing.
Example -If we connect one printer on computer in network and share that printer with other computers on network.Such type of example we can see in our real life Banks,ATM Machine,Railway Ticket booking counter,cyber cafe.

Advantage of Network

• Data Sharing - Hardware Sharing such as cdrom/dvd and Printer Sharing on network for accessing cd/dvd data from one computer to another computer & Share printer for another PC,s via network.
• Internet Access Sharing -We can see our corporate offices use some public IP,s from ISP but provide entire network users internet using NAT process.
• Application Sharing - Such asE-mail and Banks software.
• Time Saving - Time saving is another example of network because maximum our daily work we can do online like bill payment,ATM cash withdraw & Ticket booking no need to go bank or ticket counter. 
• Cost Saving - As we don,t need to buy more printer we can use one printer and share that printer to other users of network.Other examples CD/DVD.