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Consider the following statements for public circuit-switching network: 1. Private branch exchange (PBX) is an application of circuit switching. 2. A switching centre that directly supports subscribers in known as digital PBX. 3. The link between the subscriber and the network, is also referred to as the local loop. Which of the above statements are correct?
When device A has a cable that plugs into device B, and device B has a cable that plugs into device C and device C plugs into a port on the computer, this arrangement is called a _________
Which of the following are true? A. Desktop computer is a general-purpose computer made up of a separate monitor, keyboard, mouse and processor unit B. Laptop is where monitor, keyboard, pointing device, processor unit are combined in a single device C. Tablet is a device with a touch screen; which has a virtual keyboard which uses touch screen technology D. Smart Watch is a device that uses CRT technology so that the screen can bend around the wrist E. Mainframe computer runs small application where small data need to be processed Choose the correct answer from the options given below:
We describe a protocol of input device communication below: i) Each device has a distinct address. ii) The BUS controller scans each device in a sequence of increasing address value to determine if the entity wishes to communicate iii) The device ready to communicate leaves its data in the I/O register iv) The data is picked up and the controller moves to the step a Identify the form of communication best describes the I/O mode amongst the following.
Prashant bought a device from an online store for Rs. 22000, but it was faulty so he returned it, the company accepts a return after deducting 10%. He saw the same device at a discounted price of Rs. 19000, he again ordered the same device, again it was found faulty, he makes a return, the company takes the return after deducting 12%. The amount of money he lost in this whole transaction is what percent of the cost of the device he bought initially?
Consider the following statements about CMOS: 1. CMOS logic inverter has a maximum signal swing of 0 V to VDD. 2. The output signal swing is independent of the exact value of aspect ratio and other device parameters. 3. It is a fast switching device with wide noise margins. 4. It has zero input resistance and infinite output resistance. Which of these statements are correct?
Waking a device simply means that switching that device’s operation from a low power mode to an active mode.
Which of the following are the advantages of packet switching? 1. Greater link efficiency than circuit switching 2. Connections are not blocked when traffic congestion occurs 3. Direct channel established between transmitter and receiver 4. No time is taken to establish the connection Select the correct answer using the code given below.
Which of the following regarding cellular system. with small cells are correct? 1. Higher capacity and robustness 2. Needle transmission power and have to deal with local interference only 3. Frequency planning and infrastructure needed 4. That requires both circuit switching and packet switching Select the correct answer using the code given below. 
Which among the following is the fastest switching logic family?