Sunday, 22 March 2015
Saturday, 21 March 2015
Javascript: array
Array dapat dipandang sebagai rak buku; dalam hal ini rak nilai.
Merujuk array adalah dengan nama dan indexnya.
Pada JS array adalah sebuah object. Objek array punya beberapa metod joining, reversing, and sorting. Objek array mempunyai properti seperti panjang (length).
Merujuk array adalah dengan nama dan indexnya.
Pada JS array adalah sebuah object. Objek array punya beberapa metod joining, reversing, and sorting. Objek array mempunyai properti seperti panjang (length).
Listrik / Electricity
Electricity adalah bagaimana membuat elektron (muatan negatif) berpindah dari satu tempat ke tampat yang lainnya secara terus menerus (secara looping).
Electricity adalah bagaimana membuat elektron (muatan negatif) bergerak dari satu tempat ke tampat yang lainnya secara terus menerus (secara looping) sampai tenaga baterai habis.
Ukuran electricity adalah jumlah elektron yang melintasi suatu tempat setiap satu detik. Jadi kalau kamu mengamati perpindahan elektron selama 10 detik dan setelah dihitung-hitung jumlah elektron yang mengalir 100 elektron, maka dalam 1 detik ada 10 elektron rata-rata.
Yang pertama dilakukan adalah
Electricity adalah bagaimana membuat elektron (muatan negatif) bergerak dari satu tempat ke tampat yang lainnya secara terus menerus (secara looping) sampai tenaga baterai habis.
Ukuran electricity adalah jumlah elektron yang melintasi suatu tempat setiap satu detik. Jadi kalau kamu mengamati perpindahan elektron selama 10 detik dan setelah dihitung-hitung jumlah elektron yang mengalir 100 elektron, maka dalam 1 detik ada 10 elektron rata-rata.
Yang pertama dilakukan adalah
This may seem like a very simplistic question that does not need answering when, in fact, it is a question that many people do not know the true answer to. Computers have existed a lot longer than the transistor in mechanical and theoretical form. The actual definition of a computer was thought up by a very intelligent individual by the name of Alan Turing. He described a machine that was termed the Turing Machine. Every computer that we use today, from the computer or cell phone that you are reading this on to supercomputers all can be classified as a Turing Machine at their most simplistic level.
What is a Turing Machine? A Turing Machine consists of 4 parts: the tape, head, table and state register. To visualize the operation of such a machine you first have to imagine a film strip spanning infinitely in each direction. Now imagine that each cell of this film strip can contain only one of a defined set of symbols (like an alphabet). For this example let us imagine that each cell can only contain either a "0" or a"1". These cells can be rewritten an infinite amount of time but retain their information indefinitely until they are changed again. The part of the Turing Machine known as the head can write symbols to the cells as well as either increment or decrement its position on the film strip by a given integer (whole number) of cells. The next part is the table which holds a given set of instructions for the head to execute such as "move right 4 cells" and "set cell to 1". The fourth and final part of a Turing Machine is its state register whose purpose is to hold the current state of the machine. The state includes the instruction as well as the current data on the tape.
That is how simple the operation of a computer is. When your computer operates, it is actually operating as a turing machine. It processes data held on your computer by a given set of instructions and algorithms. The computer described in this Instructable is a very simplistic model of a computer, but it still operates as one that you can program with a set of instructions that it will follow and execute.
What is a Turing Machine? A Turing Machine consists of 4 parts: the tape, head, table and state register. To visualize the operation of such a machine you first have to imagine a film strip spanning infinitely in each direction. Now imagine that each cell of this film strip can contain only one of a defined set of symbols (like an alphabet). For this example let us imagine that each cell can only contain either a "0" or a"1". These cells can be rewritten an infinite amount of time but retain their information indefinitely until they are changed again. The part of the Turing Machine known as the head can write symbols to the cells as well as either increment or decrement its position on the film strip by a given integer (whole number) of cells. The next part is the table which holds a given set of instructions for the head to execute such as "move right 4 cells" and "set cell to 1". The fourth and final part of a Turing Machine is its state register whose purpose is to hold the current state of the machine. The state includes the instruction as well as the current data on the tape.
That is how simple the operation of a computer is. When your computer operates, it is actually operating as a turing machine. It processes data held on your computer by a given set of instructions and algorithms. The computer described in this Instructable is a very simplistic model of a computer, but it still operates as one that you can program with a set of instructions that it will follow and execute.
Friday, 20 March 2015
NAT
To translate address.
Firewall
To burn infectious packet.
Access-list
To disable a host to access another host.
SNMP
To send devices log to another device that standby to capture.
Dynamic routing
To tell other router when one router is changing their network that he serve.
QoS
To better serve one packet type than another packet type.
To translate address.
Firewall
To burn infectious packet.
Access-list
To disable a host to access another host.
SNMP
To send devices log to another device that standby to capture.
Dynamic routing
To tell other router when one router is changing their network that he serve.
QoS
To better serve one packet type than another packet type.
The IDEA is before you able to develop bigger network you may try to use small device.
Here at home, I have 2 wireless router that have capabilites such dynamic routing, nat, firewall, and bandwidth.
1 router is connected to the internet, other not directly connected to the internet;
Warning: TP-Link only support 1 network address per cable and wireless.
So we only have chance to build 2 network address on our network.
Task you need to do to accomplish are:
0. Setup wireless setting
1. Bridging 2 wireless SSID
2. Configure and use dynamic routing of both routing so host can communicate
3.
To configure dynamic routing, you need data:
1.
2.
2. Bridging 2 wireless SSID
To configure bridging, you need data:
3. Access restriction
To restrict an access you need:
1.
2.
3.
4. To limit the bandwidth
- Out of router 2 router 1, you need data:
5. To NAT certain address you need a data:
1. What address
6. To setting Firewall you need data:
- Are you use SPI
Here at home, I have 2 wireless router that have capabilites such dynamic routing, nat, firewall, and bandwidth.
1 router is connected to the internet, other not directly connected to the internet;
Warning: TP-Link only support 1 network address per cable and wireless.
So we only have chance to build 2 network address on our network.
Task you need to do to accomplish are:
0. Setup wireless setting
1. Bridging 2 wireless SSID
2. Configure and use dynamic routing of both routing so host can communicate
3.
To configure dynamic routing, you need data:
1.
2.
2. Bridging 2 wireless SSID
To configure bridging, you need data:
3. Access restriction
To restrict an access you need:
1.
2.
3.
4. To limit the bandwidth
- Out of router 2 router 1, you need data:
5. To NAT certain address you need a data:
1. What address
6. To setting Firewall you need data:
- Are you use SPI
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