Answer: d Clarification: To make it easier for recognition the devices are given 7 bit addresses.
6. USB is a parallel mode of transmission of data and this enables for the fast speeds of data transfers. a) True b) False
1. The transfer rate, when the USB is operating in low-speed of operation is _____ a) 5 Mb/s b) 12 Mb/s c) 2.5 Mb/s d) 1.5 Mb/s
11. The USB address space can be shared by the user’s memory space. a) True b) False
Answer: b Clarification: It allows only the host to communicate with the devices and not between themselves.
Since the announcement of the new MacBook, many questions invade the forums and our e-mail boxes, especially vis-à-vis this new connector called Apple “USB C” and incorporating some of the features of the lightning port.
I propose a little FAQ on this new connection, which, I hope, answer most of your questions.Will USB C replace the Thunderbolt? If Apple has abandoned the Thunderbolt on the MacBook, it is not expected a priori that the connector disappears on the rest of the range. The firms engineers have made a strategic and well-targeted choice here: the users of this machine are looking for the best compromise between weight and performance, and this connector responds to a large number of uses, limiting trade-offs. Clearly, there is no point in putting a Porsche engine on a Twigo chassis if its for driving only in town.What are its advantages over the Thunderbolt? USB has always had an undeniable advantage over the FireWire or Thunderbolt: it is much simpler and much cheaper to integrate than its more efficient cousins. As a result, it is likely that compatible devices will democratize very quickly (as for the transition from ADB / SCSI to USB1) and that most of your mice, disks and other external cards take into account. charge this connection in 1 or 2 years. Another advantage, USB C can provide enough power to dispense with a dedicated power cord. It will not be enough for a big office machine, like a Mac Pro, but plenty of it for a laptop, even a MacBook Pro Retina that never consumes more than 100 Watts (the limit of USB C). Finally, it is reversible (both ends are identical) and has no key on the connector, you can connect without worrying about the meaning.
But then … whats left of the Thunderbolt? The Thunderbolt has been designed to encapsulate everything that goes through the PCI bus, which is directly connected to the CPU. It is actually more modular and allows to transit virtually all protocols: Ethernet, FireWire, USB, DisplayPort … The Thunderbolt is a direct line with the processor and the possibility, ultimately, to use only one cable for all devices. Another advantage, and not least: its flow. It currently caps at 20Gbps, twice that of USB C (USB3.1 Gen 2). At the end of the year, with the release of the future Intel Skylake microarchitecture7, Apple is expected to integrate the third version of the standard, which will double the transfer rates up to 40 Gbit / s. It will be possible to connect a 5k screen, for example, something impossible on the USB. The Thunderbolt 3 will also pass a current of 100 Watts, like USB C! Finally, the Thunderbolt can also use optical cables, which allows long line lengths and potentially higher speeds.What bitrate does the USB C port offer? The USB C actually takes the characteristics of USB 3.1, a theoretical maximum rate of 10 Gbit / s. On its pages devoted to the new MacBook, Apple however only evokes 5Gbps on this single port, which surprised some readers. Apple uses the first generation of the specification, which does not exceed the bit rates of USB 3.0. Why this choice? Hard to say. The first generation has the advantage of being able to allow the use of 2m passive cables. It is also possible that Apple did not have access to the latest generation controllers (Gen 2) on time or in sufficient quantity.Can it pass video? Thanks to the “Alternate Mode” present in the USB 3.1 specifications, it is also possible to transmit on 4 pins, a DisplayPort 2.1 signal limited to 3840 x 2160 pixels, or two FullHD screens (which only do not mention Apple). However, it will be necessary to have the machine in the hands to check exactly what it is, especially since the converter USBC -> DisplayPort is not yet available or even announced by Apple!
If you want to connect more varied devices with your MAC C port, buy one at our store https://iple.com.
You can get a job based on these usb intewrview questions that were created based on the research and survey of the company. The first question in our mind is How to crack usb interview processed. These usb interview questions will provide better support to crack an interview. It provides the right direction to crack an interview in less time, as most of the companies have asked related questions, which is based on their previous interviews and their business operations. Moreover, it will be better to increase your knowledge about the background and current position of the company. In addition to that usb interview questions are required to set our mind that will increase your confidence level as well. You must read these interview questions to get success in your interview. It will provide better chances to shortlist in an interview. You can find the best answers to all the interview questions from experts and professionals who have faced such types of interviews in the past. Moreover, usb interview questions and answers are provided for experienced and fresher’s candidates as well. Besides, you can easily set your mind to crack an interview based on your knowledge and preparation. We provide a high level of content to get a shortlist in your interview and get your dream job. Moreover, most of the companies have repeated their interview questions. Thus, you should read those questions and answers as well because you should give a proper answer to those questions to make you shortlisted in the interview. Moreover, there are many good impacts of these usb interview questions and answer on your upcoming interview as well as future interviews. So, you should go through all these usb interview questions and answers once. You should know your level for that interview based on these usb interview questions as well. These usb interview questions and answers were designed for cracking an interview. Surely, you will get success in your interview or job. usb placement papers are useful for improving knowledge and personal development that will use in another interview as well.
Active multiplexers such as the TUSB542 and TUSB1042I should be used in your standard Type-C designs. USB Type-C also facilitates the transmission of additional types of high-speed data such as DisplayPort, High-Definition Multimedia Interface, UART, and other video or custom interfaces over the same connector. The TUSB1146 and TUSB1064 are essential for systems to enable their Alternate Mode capabilities.
To help you understand whether the USB protocol is a good fit for your system and meets your high-speed interface needs, here are six key questions designers should consider.
2: How do you transmit data over a long distance when your interface’s data link reliability is lacking?
While you may see external USB ports everywhere in consumer products, USB connections do not have to be external. If your chosen MCU or CPU has USB capability, you can also consider USB for embedded connections to other MCUs or CPUs in your system. USB has built-in data encoding to help reduce electromagnetic interference and link power management for power efficiency. USB also adds flexibility for customer software where many low-level drivers already exist today.
For technical details on the USB protocol and USB implementations, check out the resources below, or post on the TI E2ETM Interface forum if you have a technical question about USB and need help picking the correct product for your system.
FAQ
What is the principle of USB?
What are the applications of USB?
