Chapter 7, Problem 4RP

Can you explain the difference between synchronous and isochronous connections and provide an example of each kind of connection?

What do you think the future of screencasts is in relation to technical writing? If you think this has potential use in IT, please describe how.

what is the difference between synchronous and asynchronous communication ? Provide the examples for each communication type. ..

1. A color image uses 18 bits to represent a pixel. Compute the maximum number of different colors that can be represented?                                                      2.  For n devices in a network, determine the number of cable links required for a mesh, ring, bus, and star topologies?                                                                3. Color pictures are to be downloaded at the rate of 900 pictures per minute. Compute the required bit rate of the channel. Assume each picture consists of 768 (height) x 1280 (width) color pixels. Each color pixel value is specified by 24 bits.                    4. The loss in a cable is usually defined in decibels per kilometer (dB/km). If the signal at the beginning of a cable with - 0.5 dB/km has a power of 24 mW, determine the power of the signal at 18 km?

An image is 1600 × 1200 pixels with 3 bytes/pixel. Assume the image is uncompressed. How long does it take to transmit it  Over a 56-kbps modem channel?  Over a 1-Mbps cable modem?  Over a 10-Mbps Ethernet?  Over 100-Mbps Ethernet?  Over gigabit Ethernet?

Discuss the challenges and solutions involved in extending the length of a USB cable beyond its standard limit without sacrificing signal integrity or data transfer speed.

In the context of technical writing, what potential use do you see for screencasts? Please explain how you believe this may be useful in the field of information technology.