Question 2: How do I know what specifications of network cables are used now? I can't see any specifications of this crystal head. There are several types of network cables, and most of them are commonly used in 5 categories. When the network cable is a few meters long, it will not affect the network speed, unless it is a very thin aluminum network cable.
Question 3: What kind of network cable is best for ordinary families to buy at home?
Generally, all the network cables used in the market are over 7 unshielded and easily disturbed by nearby wires.
It is best to buy over 7 shielded crossover cables. You can burn the skin with a lighter, and it will catch fire.
Question 4: What are the specifications of the network cable? There are many specifications of the network cable, such as the over-five shielded network cable. Unshielded network cable, category 6 unshielded network cable, shielded network cable, etc., as well as over category 7 network cable, which network cable to use depends on your needs. Generally, over category 5 network cable is enough for home decoration. I used Enri-Link smart brand network cable before, and the price and performance are good. I hope my answer can help you
Question 5: What do you mean by category 5 network cable and over category 5 network cable, and which one is good? Twisted-pair cables are commonly found in Category 3, Category 5, Category 5, Category 6 and the latest Category 7. The former has a thin line diameter and the latter has a thick line diameter, and the models are as follows:
Type I line: mainly used for voice transmission (type I standard is mainly used for telephone cables before the early 198s), which is different from data transmission.
Class II line: The transmission frequency is 1MHZ, which is used for voice transmission and data transmission with the highest transmission rate of 4Mbps. It is common in the old token network using the 4MBPS standard token passing protocol.
Class III cable: the cable specified in ANSI and EIA/TIA568 standards. The transmission frequency of this cable is 16MHz, and it is mainly used for voice transmission and data transmission with the highest transmission rate of 1Mbps.
Class IV cable: the transmission frequency of this cable is 2MHz, and it is used for voice transmission and data transmission with the highest transmission rate of 16Mbps, mainly used for token-based LAN and 1base-t/1base-t.. 5)
Category 5 cable: This type of cable has increased winding density, and is covered with a high-quality insulating material with a transmission rate of 1MHz, which is used for voice transmission and data transmission with the highest transmission rate of 1Mbps, mainly used in 1BASE-T and 1BASE-T networks. This is the most commonly used Ethernet cable.
ultra-category 5 line: ultra-category 5 has the advantages of small attenuation and less crosstalk, higher ratio of attenuation to crosstalk (ACR) and StructuralReturn Loss, smaller time delay, and greatly improved performance. Super Category 5 cable is mainly used for Gigabit Ethernet (1Mbps).
category 6 cable: the transmission frequency of this kind of cable is 1 MHz ~ 25 MHz, and the comprehensive attenuation crosstalk ratio (PS-ACR) of category 6 wiring system should have a large margin at 2MHz, which provides 2 times the bandwidth of category 5. The transmission performance of Category 6 cabling is much higher than that of Category 5 standard, and it is most suitable for applications with transmission rate higher than 1Gbps. An important difference between Category 6 and Category 5 is that it improves the performance of crosstalk and return loss, which is very important for the new generation of full-duplex high-speed network applications. The basic link model is cancelled in the six standards, and the wiring standard adopts a star topology structure. The required wiring distance is: the length of the permanent link cannot exceed 9m, and the length of the channel cannot exceed 1m m.
Super Category 6 cable: Super Category 6 cable is an improved version of Category 6 cable, which is also an unshielded twisted-pair cable specified in ANSI/EIA/TIA-568B.2 and ISO Class 6 /E standards, and is mainly used in gigabit networks. In terms of transmission frequency, it is 2～25 MHz, and the maximum transmission speed can reach 1 Mbps, but it has been greatly improved in crosstalk, attenuation and signal-to-noise ratio.
Class VII cable: This cable is the latest twisted pair in ISO Class 7/Class F standard, which is mainly to adapt to the application and development of 1 Gigabit Ethernet technology. However, it is no longer an unshielded twisted pair, but a shielded twisted pair, so its transmission frequency can reach at least 5 MHz, which is more than twice that of Category 6 and Super Category 6 cables, and its transmission rate can reach 1 Gbps. Twisted pair can be divided into unshielded twisted pair (UTP=UNSHIELDED TWISTED PAIR) and shielded twisted pair (STP=SHIELDED TWISTEDPAIR). The outer layer of shielded twisted-pair cable is wrapped with aluminum platinum to reduce radiation, but it cannot completely eliminate radiation. Shielded twisted-pair cable is relatively expensive and more difficult to install than unshielded twisted-pair cable. Unshielded twisted pair cable has the following advantages: no shielded jacket, small diameter, saving occupied space; Light weight, easy bending and easy installation; Minimize or eliminate near-end crosstalk; It is flame retardant; With independence and flexibility, it is suitable for structured integrated wiring.
If you are connected to the backbone network, Super Category 5 is definitely better than Category 5, and the bandwidth is higher, but the corresponding cost is also higher than Category 5. If you are short-distance and have a large network traffic, you can consider using Super Category 5. If it is only for general household use, Category 5 is enough.
Question 6: How many kinds of network cables are there? Which one is better? According to the transmission rate, there are 5 types and 6 types of cables, which transmit 1M and Gigabit respectively;
According to the type of media, there are both copper wire and aluminum wire. You should buy copper type 5 cable. Generally, only 3 meters is enough, and the price is less than 1 yuan.
Question 7: Which cable is good depends on what you do.
if you walk long lines in a room or a dark trough, you need to have a shielding layer of super five or six.
if the bandwidth is only about ten megabytes, and it doesn't take long, the cheapest network cable of four copper and four iron can also be used. Hundreds of megabytes or more, it must be eight copper wires. Exceeding five is a hundred megabytes, and gigabit is six categories. Moreover, the head of the network cable is different. It is best to let people do it well and do it themselves. Six categories are often made into super five.
for your own use, it is best to buy a ready-made network cable. Don't listen to anything. My Amp is only five yuan each. One hundred percent is fake.
to see the wire, it must be copper. The thicker the wire diameter, the better. A good wire can easily prick your finger, and a bad wire is much softer to the touch. If you are really not sure, go to the supermarket. The difference is almost, but personal use is enough.
don't be greedy for cheap, buy one or two yuan a meter of network cable, which is easy to lose packets when playing games. Of course, if you only need one meter, he can use it as long as he sells it for 5 cents.
question 8: what brand of network cable is good? 1. ampu (a brand of American TE Connectivity company, the world's leading supplier of structured wiring system for commercial buildings, a large group, Tyco Electronics (Shanghai) Co., Ltd.)
2. CommScope (in the United States in 1976, it was the world leader in communication network infrastructure solutions and the largest manufacturer of coaxial cables for broadband cable TV networks. Commscope, USA)
3. Legrand -TCL (started in 186 in France, the leading brand in the electrical industry, the top ten data line brands, TCL- Legrand International Electrician (Huizhou) Co., Ltd.)
4. Putian (information product and service provider specializing in the communication industry, national innovative high-tech backbone enterprise, large group, China Putian Information Industry Co., Ltd.)
5. Yizhou SHIP (key high-tech enterprise, China well-known trademark, Zhejiang famous trademark, influential integrated wiring brand, Zhejiang Yizhou Electronic Technology Co., Ltd.)
6. Fanda Panduit (in 1955, a world-class developer and supplier of network and electrical solutions, a pioneer in designing and implementing e-commerce in the electrical industry, American Pantech Company)
7. Datang Telecom (listed joint-stock high-tech enterprise, focusing on the development of microelectronics/software/communication access/communication terminal/communication application, Datang Telecom Technology Co., Ltd.)
8. Changfei (in 1988, focusing on optical fiber and cable and comprehensive solutions, national high-tech industrialization demonstration engineering unit, top ten data cable brands, Changfei Optical Fiber and Cable Co., Ltd.)
9. Zhaolong (a high-tech enterprise specializing in R&D and manufacturing photoelectric information/new energy transmission cables and configuration systems, data cable standard drafting unit, Zhejiang Zhaolong Cable Co., Ltd.)
1. Hui Yuan HuiY (focusing on R&D and production of transmission cables and network wiring supporting products, with a large-scale professional manufacturer of data cables, Beijing Hui Yuan Wire & Cable Co., Ltd.)
Question 9: What brand of network cable is the best? OWIRE/ Orwell brand network cable is OK, and it has been shortlisted as one of the top ten brands in China. It is the designated supplier of radio and television, and the preferred brand for engineering projects.
Question 1: What kind of network cable is used for home use? It has no influence on the network speed. The cable over Category 5 is 15Mb/s, which is the transmission speed of local area network, and Category 6 is Gigabit, which is shielded. At present, the highest is 1G. General household 1-megabit line
for adoption.