ANUNG KURNIAWAN Question

1. what is the meaning about cable STP?

answer :
STP cable is one type of cable used in computer networks. STP cable is more resistant to interference caused the position of the bent wire.

2. transmission medium in a computer network consisting of quided and unguided. explain the difference of the two?

answer :  

• guided is end to end when is provides a direct connection between two devices and share the same media. 

• unguided is a medium that provides a means to transmit electromagnetic wawes .

wide area network (WAN)

wide area network (WAN) is a telecommunication network that covers a broad area (i.e., any network that links across metropolitan, regional, or national boundaries). Business and government entities utilize WANs to relay data among employees, clients, buyers, and suppliers from various geographical locations. In essence this mode of telecommunication allows a business to effectively carry out its daily function regardless of location.

This is in contrast with personal area networks (PANs), local area networks (LANs), campus area networks (CANs), or metropolitan area networks (MANs) which are usually limited to a room, building, campus or specific metropolitan area (e.g., a city) respectively.

LAN (local area network)

Local area network is a computer network whose network covers only a small area, such as campus computer networks, buildings, offices, in homes, schools or smaller. Today, most LAN technology based on IEEE 802.3 Ethernet switch using the device, which has a data transfer speed 10, 100, or 1000 Mbit / s. In addition to Ethernet technology, the current 802.11b technology (or so-called Wi-Fi) is also often used to form the LAN. Places that provide LAN connectivity with Wi-Fi technology called hotspots.

On a LAN, each node or computer has its own computing power, in contrast to the concept of terminal dump. Each computer can also access resources on the LAN in accordance with the perm

Network address translation (NAT)

Network address translation is a method to connect more than one computer to the Internet network by using a single IP address. Much use of this method due to the limited availability of IP addresses, the need for safety (security), and the ease and flexibility in network administration.

IP addresses

Currently, the widely used IP protocol is IP version 4 (IPv4). With a length of 4-byte address means that there are 2 to the power 32 = 4,294,967,296 available IP addresses. This amount is theoretically the number of computers that can directly connect to the internet. Because of this limitation of most ISPs (Internet Service Provider) will only allocate one address for one user and this address is dynamic, in the sense of a given IP address will be different each time a user to connect to the internet. This will make it difficult for businesses to lower middle class. On the one hand they need more computers are connected to the internet, but on the other hand only one available IP address, which means there is only one computer that can connect to the internet. This can be overcome with the NAT method. With a NAT gateway that runs on one computer, one IP address can be divided into several other computers and they can connect to the internet simultaneously