strive to success

STRIVE TO SUCCESS

All of us want to success in our future life.Definiton of success may be different from different people.Some may say it is a rich, powerful and also be happy in future life.This is our dream from child until now.But it is easy to plan but difficult to achieve.We can conclude that if you fail to plan so you will plan to fail.So here I am to share a little bit tips for you to achieve a successful in your life.

First WORK FOR IT 

If you wish for something then do something about it.Chase it until you can get it.For example,if you wish to get a good university,then study hard to make you are choosen to enter that university.

Second  DON'T BE FEAR TO FAIL ONCE

Sometime fail will guide you to a better position.You will learn from that failure to success.Once you fail doesn't mean you will fail forever.There is always another chance for you to fix it.

Third ALWAYS BELIEVE WITH YOURSELF

Always believe that you can do it.Who else can believe you as much as yourself. Set a positive mind set in your head that you can do it and you are near to a successful.Don't hear on what people judge and say about you. Only you know what the best for you.Do it to show to the people that dislike you.Prove that you can do it.

Fourth DO NOT GIVE UP

Please do not ever give up on what you wishes.Work until you worth for it.A failure is always give up on what they want.For sure we don't want to be a failure.So work for it although it is very difficult to achieve. There is nothing that we can get easier without an effort in this world.

So for a few final word I wish you a good luck in your life.Remember don't give up until you achieve it.I would like to share my favourite qoutes from JOHN D ROCKEFFER :

         "if you want to success,you should strike out on a new paths,rather than travel the worn                                                        path of accepted success".

                                                

overview of internet

SUMMARY 

   

network topology

network topology 

   Network topology is refers to the layout of the computers and devices in a communication network .~Shelly Cashman~

It refers to both physical and logical layout on network 
    Physical Topology: physical layout of nodes, workstation and cables in network 

     Logical Toplogy: path that data travels between computer on a network 


Type of network topology 

Bus Network Topology 

bus network drawing

🌼The bus is the physical cable that connects the computer and other devices(nodes)

🌼Bus in a bus network transmit data, instruction and information as a series of signal

🌼Those signal are sent as electrical pulses that travel along the length of cable in all direction.

Advantages 

❀Inexpensive and easy to install 

❀Computers and other nodes can be attached and detached at any point on the bus without disturbing rest of the network.

Disadvantages

❀a break in cable will prevent all systems from accessing network because all sysytrem connect to a single cable or backbone.

❀difficult to identify problem if entire network shut down

Star network topology 

star network drawing

🌼 All computers and devices on network connect to a central device thus forming a star.
🌼Two types pf communication devices that provide common central connection point to all nodes on the network are hub and switch
   HUB :is the central point of connection for a cable segments in a physical star topology 
   SWITCH: connection devices similar to a hub but more sophisticated including functionally that allows it to control and manage data transmissions.

Advantages
❀if one node fails,only that node is affected
❀easy to troubleshoot and isolate problem.
Disadvantage
❀if hub or switch fail, the entire network will be inoperable 
❀more expensive because of the cost of hub/switch.

Ring Network Topology 

ring network topology

🌼 on a ring network, a cable forms a closed loop with all computers and devices arranged along the ring.

🌼data transfer in ring network from one to one node in one direction(clockwise or counterclockwise)

 Advantages 

❀cable faults are easily located making troubleshoot easier.

❀transsmision of data is relatively simple as packets travel in one direction.

Disadvantages

❀failure in any cable or nodes breaks the loop and can take down entire network.

❀more difficult to install than bus network,.

network

NETWORK

First chapter in semester 2..We learn about network..Network is a collection of computers and devices connected together via communications devices and transmission media..

The application of network:

-RESOURCE SHARING

*hardware

*software

-INFORMATION SHARING

*easy accessibility from anywhere

*search capability 

-COMMUNICATION

*email

*message broadcast