Question 1: What is the function of the splitter? Splitter-splitter is used to separate the composite signal transmitted by telephone line into analog signal and digital signal. You will use it when you use broadband network and telephone. Only use broadband network, and when you don't answer bluff, you don't need a splitter. If you still want to use the phone, you must use a splitter to separate the two signals, and the phone must be connected to the phone output of the splitter, not in front of the splitter, otherwise the broadband will be broken as soon as you answer the phone.

Question 2: How to use the splitter? First, the principle of the splitter

In the 10/ 100M Ethernet we use, the transmission boundary is five types of twisted pair. It consists of four pairs of ***8 cores. We only use 4 (2 pairs) of them for data transmission, leaving 4 (2 pairs) lines. So, we can use the remaining four wires as data transmission. Such a network cable can be used by two users to surf the Internet at the same time. We don't usually use it like this.

Knowing the principle of the splitter, you should understand that the splitter made by the network center still allows users to enjoy the line alone. It divides eight lines in the network lines into two groups to transmit data, so it will not affect the speed and bandwidth of users surfing the Internet. This is essentially different from the transmission of tap connectors bought outside. Therefore, it will not prevent users connected to the same pair of splitters from accessing each other.

Second, the composition of the splitter

Separators are used in pairs. A pair of splitters consists of two splitters.

The splitter consists of two crystal heads and a module, and the two crystal heads are connected with the module through twisted pair. One of the crystal heads is arranged with four lines of blue, blue-white, brown-white and brown in the 1, 2, 3 and 6 slots of the crystal head respectively. Another arrangement method of the crystal head is that the four rows of green, white, green, orange, white and orange are located in the 1, 2, 3 and 6 slots of the crystal head respectively. The other pair of separators do the same thing.

Third, the use of splitters.

The client (dormitory) and the switch each need a splitter. If both ends of the network cable are crystal heads, connect the crystal heads on both sides to the modules of the two splitters respectively. Usually, the longer splitter is placed on the user side and the shorter splitter is placed on the switch side. The two crystal heads of the computer room distributor are inserted into the two ports of the switch respectively, and the two crystal heads of the user distributor are connected to two users respectively.

Four. Matters needing attention and judgment of good or bad when using divider

1, use the splitter only if there is no problem with the twisted pair (8 cores are not disconnected).

2. A pair of splitters is equivalent to turning a twisted pair into two straight lines. So the blue, blue-white, brown-white and brown-lined lenses correspond to the blue, blue-white, brown-white and brown-lined lenses at the other end. Pay attention to this problem when using and testing the separator.

3. The detection method of splitter is the same as that of ordinary twisted pair.

Prices range from a few yuan to dozens of yuan!

Question 3: How to use the splitter? It is impossible to divide the network cable into two lines. You can buy a 4-port PBX, which is not expensive.

Question 4: What is a u *** splitter? It just takes up a u *** interface on your computer, and then splits several u *** interfaces through it. In other words, even if your computer only has a u *** interface, you can plug in four USB flash drives at a time (I mean a quarter).

Question 5: What is the use of the hub splitter? 30 minutes HUB, Chinese name hub. Now two people use it, and the switch is so cheap. Hub belongs to the data link layer in OSI model. Cheap price is its biggest advantage, but because hub is a * * * device, the efficiency becomes very low in heavy networks, so we can't see hub in medium and large networks. At present, full-duplex mode is widely used in hubs, and the common hub transmission rate in the market is generally 100Mbps. Next, let's take a look at several concepts of the hub: * * enjoyment.

The biggest feature of hub is that it adopts * * * sharing mode, that is, when one port is sending data to another port, other ports are in a "waiting" state. Why wait? For example, in fact, A sends a data packet to B in a unit time, and A sends it to three ports B, C and D (this phenomenon is the IP broadcast introduced next), but only B receives it, and other ports will not receive the data sent by A after judging that it is not the data they need in the first unit time. Until A sends IP broadcast again, C and D are idle or can transfer data between CDs in the unit time before A sends IP broadcast again. As shown in figure 1, we can understand that there is only one channel inside the hub (that is, the common channel), and then all ports are connected below the common channel.

Question 6: What is the difference between a router and a splitter, and what is the function of a hub?

1.Hub (here only refers to non-switched single-segment and multi-segment types) belongs to the first layer physical layer equipment of OSI in OSI architecture. Hub only plays the role of synchronization, amplification and shaping of data transmission, and can't effectively deal with short frames and fragments in data transmission, and can't guarantee the integrity and correctness of data transmission, which is similar to a large bus LAN.

2. From the working mode, the hub is a broadcast mode, that is to say, when one port of the hub works, all other ports can receive information, which is prone to broadcast storm, and only one port sends data at a time. In addition, the security is poor, all network cards can receive the sent data, but the non-destination network card discards the data packet.

3. In terms of bandwidth, no matter how many ports there are in the hub, all ports share a bandwidth, only two ports can transmit data at the same time, other ports can only wait, and the hub can only work in half-duplex mode;

4.hub works in the physical layer to transmit data by broadcasting. When the traffic is small, the performance will not decrease obviously, so it is not suitable for local area network with bus structure.

Router:

Routers work at the third layer of the OSI model, namely the network layer. Routers use the network address (IP address) on the "logic" defined by the network layer to distinguish different networks, realize network interconnection and isolation, and maintain the independence of each network. Routers do not forward broadcast messages, but limit broadcast messages to their own networks. Data sent to other networks should be sent to the router first, and then forwarded by the router.

IP routers only forward IP packets, and the rest remain in the network (including broadcasting), thus maintaining the relative independence of each network and forming a large network with many interconnected networks (subnets). Because it is interconnected at the network layer, routers can easily connect different types of networks. As long as the network layer is running IP protocol, it can be interconnected through routers.

Devices in the network communicate with each other with their network addresses (IP addresses in TCP/IP networks). The IP address is a "logical" address, which has nothing to do with the hardware address. Routers only forward data based on IP addresses. The structure of IP address has two parts, one part defines the network number, and the other part defines the host number in the network. At present, in Internet network, subnet mask is used to determine the network address and host address in IP address. The subnet mask, like the IP address, is 32 bits, and they are in one-to-one correspondence. Specify that the part of IP address corresponding to the number "1" in the subnet mask is the network number, and the part corresponding to the number "0" is the main telephone number. The network number and the host number are combined to form a complete IP address. The IP addresses of hosts in the same network must have the same network number. This network is called an IP subnet.

Only IP addresses with the same network number can communicate. To communicate with hosts in other IP subnets, you must go through a router or gateway in the same network. IP addresses of different network numbers cannot communicate directly, even if they are connected together.

A router has multiple ports for connecting multiple IP subnets. It is required that the network number of the IP address of each port is the same as the network number of the connected IP subnet. Different ports have different network numbers and correspond to different IP subnets, so that the hosts in each subnet can send the required IP packets to the router through the IP address of their own subnet.

2. Routing principles

When a host in an IP subnet sends an IP packet to another host in the same IP subnet, it will directly send the IP packet to the network, and the other party will receive it. When sending IP packets to hosts with different IP addresses on the network, it should select a router that can reach the destination subnet and send the IP packets to the router responsible for sending the IP packets to the destination. If such a router cannot be found, the host will send IP packets to the router called the "default gateway". The "default gateway" is a configuration parameter on each host, which is the IP address of the router port connected to the same network.

When a router forwards an IP packet, it only selects an appropriate port according to the network number part of the destination IP address of the IP packet and sends the IP packet out. Like the host, the router should determine whether the port is connected to the destination subnet. If so, it will send the data packet to the network directly through the port, otherwise ..... >; & gt

Question 7: What does 7:u * * * splitter do? The u *** splitter is a u *** hub, also known as a u *** hub. When the u *** interface of your computer is not enough, you can use the u *** splitter to connect the computer, and then 500G of other devices are connected to the u *** splitter, which can be used normally on the computer. If you want to buy a u-shaped separator,

Question 8: What is the best dealer brand? Get help from ...

Question 9: How to use the router as a distributor to plug the network cable directly into the LAN port, and the WAN port does not need to be connected. If there is a router in the LAN, change the IP of this router into a switch, otherwise sometimes the gateway will find this IP and will not be able to access the network.

Question10: What's the difference between a USB hub and a splitter? USB hub is a kind of USB splitter, which divides a USB interface of a computer into multiple USB interfaces. You can connect more USB devices.