The key difference between hub and bridge is that hub works on the physical layer, but bridge runs on the data link layer of OSI model. Hubs and bridges have different uses. Hubs send data to each device connected to them, and it broadcasts data. On the other hand, the bridge is more intelligent, checking and filtering data before forwarding data. This mechanism can significantly reduce network traffic and improve security. Hubs can connect two LAN segments, while bridges can connect two different LANs. Differences between Hubs and Bridges BASIS FOR COMPARISON HUB BRIDGE Basics Used to connect a number of devices. Facilitates in the segmentation of the larger network. Types Active and Passive Transparent, translational and source route. Data filteration Not performed Conducted Uses Multiple ports Single incoming and outgoing port Links Segments of LAN Two different LAN employing same protocol. What is the hub? Hub is a basic network device because it provides a very simple function of establishing connections between several devices. In addition, the device can also be used as a connector for different LAN segments. These devices are connected to the hub by twisted pair cables. The main purpose of hubs is to transmit data packets to each device connected to them. It does not perform any filtering, which means that each block of data is transmitted to all connected terminal devices, even if it is not the target device. That's why it's considered a non-intelligent device. Hubs work in a single conflict area, which means that transmission lines should run at the same speed.…

DDR2 and DDR3 are DDR RAM memory versions, among which DDR3 is a more advanced version with higher functions, such as high data transmission speed, low power consumption, memory reset options, more memory, etc. But the main difference is that DDR3 provides data rates twice as fast as DDR2. As technology advances, faster memory versions, such as DDR (double data rate) memory, have also been developed. The main concept behind DDR memory is to simultaneously access a large number of bits in the chip by applying row addresses to the chip. There are several technologies that can improve bit transfer speed from pin to chip. In order to effectively utilize clock speed, data is transmitted externally to the rising and falling edges of the clock, which is why these memories are called double data rate memory. BASIS FOR COMPARISON DDR2 DDR3 Clock frequency (theoretical) 400 - 800 Mhz 800 - 1600 Mhz Transfer data rate 400 - 800 Mbps 800 - 1600 Mbps Supply voltage 1.8 volts 1.5 volts Prefetch bit width 4 bit 8 bit Memory reset option No provision of reset options Provided Power consumption High Low Speed Slower comparatively Faster Latency 2 - 5 7 - 11 Performance Better than DDR3 Average Cost Less More Definition of DDR2 DDR2 is the second version of DDR (double data rate) memory. These versions of RAM were developed to achieve high data rates for block transmission. It can transmit data at a clock rate of 400 to 106 Mhz. DDR version 2 is a follow-up version of DDR, which mainly…

First of all, I think there is still a certain problem in this problem. If I lose weight in a month, what will happen after that month? Studies have shown that only 5% of those who lose weight in the short term can maintain their weight after losing weight for a long time, that is to say, 95% of those who lose weight regain their previous weight after losing weight, or are heavier. And losing weight is not just a matter of perseverance. Many times we want to eat, maybe not hungry, just want to eat, or eat unconsciously, or just feel bad or in a good mood. Perseverance is not a way to lose weight. Many people think that they can't keep on losing weight because of the problem of perseverance and self-control. Those who succeed in losing weight must have strong self-discipline, but this is not the case. We are all ordinary people, who succeed in losing weight and can keep it going. Most of them are ordinary people like you and me. Their secret is to live a life. Instead of biting your teeth, you change your habits and stick to the life of the ascetic day after day. Do you know Oprah? This is the most famous weight loser in the world. I think a lot of people may have heard of her weight loss and inspirational stories. As a black, she was the most influential TV talk show host in America in the 20th century, but you may not know the "Oprah Paradox" in the…

It is reported that there are dozens of "ghost ships" in the coastal areas of Japan every year. These boats usually do not have anyone, or just carry corpses or even bones. The number of "ghost boats" drifting to Japan's coast this year has reached 95, up to 33 in November alone, and some of them carry dead bodies that have become white bones. What's wrong with a large number of ghost ships in Japan? As many as 95 dilapidated vessels have drifted to Japan's coast this year, at this rate it is highly likely to exceed the record 104 in 2017. At present, 12 bodies have been found on these "ghost ships". Details of Japan's massive ghost ships According to the statistics of Japan's Maritime Security Agency, 33 ships have been found in November alone, much more than in October, which is also related to the strong sea storms in autumn and winter. Most of them were wooden fishing boats. In addition to corpses, some boats also left small pots, spoons, fishing gear and other items. Since autumn, these "ghost boats" have mostly appeared near Hokkaido, and the authorities have also strengthened their vigilance. In recent years, there have been successive "ghost boat" landings in Japan. The number of "ghost boat" incidents reached 104 in 2017, which is the largest year since the statistics began in 2013. The previous record was in 2013, when 80 related vessels were discovered. Let's see what a ghost ship looks like. Phantom boats are inexplicable ghostly vessels. They are usually missing or sunk…

It is difficult for a woman to lose weight after she is 40 years old. I am not an expert. I only look at this problem from a woman who is 40 years old. metabolic slowdown First of all, metabolic slowdown, while living habits have not changed, relevant data show that the human body from the age of 20, metabolism began to slow down. Imagine, 20 years ago, how big your meals were, I think most people would say, 20-year-old girl, afraid of fat, eat only a little, anyway, I remember, at that time I only eat a small half bowl of rice, I was most impressed by the first few years, the neighborhood girl was 18 years old, a meal a dumpling, a dumpling, what concept If we are now, a dumpling, when cooking dumplings, fishing out a taste, you will have a feeling? I did not. One family eats dumplings. There are 3 or 5 left on the table. Do you feel it when you throw your mouth? Do you feel full? Some may feel it, but think about it, these dumplings have to be put alone, the next meal is not good, stomach bar. It's just a meal. You've put in a few more dumplings. I'm sure it's never done once a day. So you eat a lot and you consume less. Can you stop being fat? Over and over, who are fat if you are not fat? Too little exercise Some people will say that too little exercise is also the cause of obesity, in fact, my…

Often eat peanuts, can enhance memory, prevent disease, but 5 kinds of people should not eat. Peanuts are no longer a rare food. They are sold everywhere in the market. It taste good and can be made into many kinds of food. They are also very nutritious. The most common is that peanuts are made into snacks, or as a seasoning added to other snacks, fried peanuts can also be used as food and wine, the most common household cooking oil is also peanut oil, the Chinese people most like to eat peanuts. Today's article gives you a brief account of its nutritional value, and who else can't eat more. Nutritional value of peanuts It has made a good contribution in preventing heart disease, hypertension and arteriosclerosis. Peanuts contain large amounts of fatty acids, which effectively control the body's cholesterol levels. And it contains a lot of active substances, which can prevent tumors from growing inside the body. Peanuts can prevent cancer and reduce platelet aggregation. Peanuts can reduce the risk of intestinal disease, especially cancer, remove toxic substances accumulated in the body, or eliminate toxic substances on the body's damage. It contain zinc and vitamin E, which help the brain enhance memory and resist brain aging. People with blood clots can eat more peanuts because peanuts are rich in vitamin K and stop bleeding. Patients suffering from hemorrhagic diseases can eat food by eating peanuts. Diabetic Peanuts can be made into peanut oil, peanuts are high in energy, fat is also high, patients usually need to control energy and fat intake,…

I stay away and let her do what she needs to do with her life, Father Lockwood told me one evening during a visit to the rectory in Kansas City. I stay away from games of chance. How to use I stay away I am not God obedient daughter, because I stay away from him. If I stay away from him? She gets to fretting if I stay away form home too long. But other than that I stay away from work over the weekend and spend time with my family, friends, a good book or movie or I do some other fun activity. Now, I stay away from age extremes, and in those rare moments I meet someone extremely younger or older that I'm into, I look for common interests before committing to a date. At the meantime their families were wait at home with great worries. She gets to fretting if I stay away form home too long. I stay away and let her do what she needs to do with her life, Father Lockwood told me one evening during a visit to the rectory in Kansas City. I'd stay away from that part of town, if I were you. He says I should stay away from you. Why would I ever stay away from you? Tony: As long as I can stay away from TV and my stereo. Or maybe I should stay away from all men. I should stay away from married women. I can stay away from guesthouses and hotels and just sleep at train stations…

Owning a luxury car is not only a man's dream, but also a woman's dream. Now women are more and more fond of sports cars. This list is a series of cars that suit women's taste. Explore the ten most attractive cars for women. BMW M6 Cabrio BMW has always been great, representing wealth and social status. The BMW M6 Cabrio is an excellent car. It is one of the most sporty products in the series. Because of its sexy and charming appearance, women like it very much. It can be your safe and amazing driving choice. Dodge Viper Dodge Viper is another excellent car equipped with V10 engine. It has aerodynamics, fashionable fuselage and excellent color. It's beautifully made, made in Detroit, Michigan, where some of our greatest cars are located. This is a confident car for men and women. Are you one of them? Cadillac Eldorado Cadillac Eldorado embody class and wealth. This is a luxury car, fashionable and unique. It must be included in the top gadgets of your home. The optional audio system has the right to bragging, making cars look great. Ferrari GTO There are several versions of Ferrari's GTO. In fact, some old models are expensive. Ferrari GTO's new car sells for about USD200,000. It attracts women and men to love this car because it has attractive appearance and great specifications. Jeep Wrangler Jeep Wrangler is a good choice for sexy driving. It allows girls to be wrapped up by powerful vehicles with their loved ones. This car is absolutely attractive and famous for…

What 'TFW' means and why people love to use it online? If you have just discovered a social media post, a commentary or an article. They start with TFW and follow a sentence behind them. What does this mean? TFW: That Feel When Although this is not grammatically correct, it is a popular saying in social media. When you want to express your feeling of doing something, you can use TFW. You may be sad or happy. People can know how you feel after the sentences behind TFW. The origin of TFW It is not yet clear when the initials should begin. But it is probably related to the meme of "I Know That Feel Bro". It is characterized by a simple rendering of roles, embracing another character, as if he sympathized with him. It appeared on the Internet some time in 2010. TFW generally means accompanied by some descriptive sentence. It can be paired with photos or even GIF to express the emotions behind the information intuitively. Sometimes, nothing can convey it better than image. How to use TFW Generally speaking, acronyms are used at the beginning of a sentence, followed by ordinary daily activities that most people have done before. The following two examples should let you know how TFW is used. TFW you finally get a text back after eight and a half hours. TFW you realize you almost just poured coffee in your cereal instead of milk. This acronym is popular on Twitter because it's perfect for describing strange, funny, and embarrassing situations. People are using text, bad grammar and…