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Chris and Pat Aquino own a successful ISP (Internet Service Provider) and want to expand their business to host an Internet auction site.
Compare and contrast two of the following email clients: Outlook, Outlook Express, Hotmail, Eudora, Mozilla Thunderbird, Opera Mail, Pine, and Lotus Notes.
Description of the path a packet takes across the Internet from destination A to destination B. What types of network devices
We have discussed security protocols from IP layer (e.g., IPSec) to application layer (e.g. XML and S/MIME).
Draw a Data Flow Chart and then develop an application that allows a user to enter a stock transaction and determine the stockbroker's commission.
Design and describe an application-level protocol to be used between an automatic teller machine and a bank's centralized computer
A group of N stations share a 56-kbps pure ALOHA channel. Each station outputs a 1000-bit frame on an average of once every 100 secs
Consider a selective-reject ARQ system with a window size of 3.
Why does the Internet need HTTP, TCP, IP and DNS? Why isn't the Internet Protocol (IP) enough to do the job? Please reply to these specific points of confusion.
Use a communication line to transmit data serially at a rate of 14,400 bits per second. If a burst of interference lasts .01 second, how many data bits
A site survey enables you to do it right the first time. Without a site survey, trial and error is the only way to place access points in locations
Use the Library, the Internet, and other resources to explain ARQs (automatic repeat requests). Discuss the purpose and the different mechanisms
Today ISDN cost $40 per month for BRI service which includes 1 D Channel and 2 B Channels. Each channel is capable of transmitting 64kbps of voice
ISDNs are sometimes used in locations that do not support DSL or cable modem connections. Your choices may be analog modems or an ISDN connection
Two data centers used for retail credit authorization are located in two different major population centers, which are separated from each other by a large zone
A signal starts at point x. As it travels to point y it loses 8 db. At point y the signal is boosted by 10 db. As the signal travels to point z it loses 7 db
As much as you may have a preference for a type of network (i.e. broadband, wireless) each technology has both disadvantages and advantages
Messages arrive at random to be sent across a communications link with a data rate of 9600 bps. The link is 70% utilized, and the average message length is 1000
How big is a physical PDU (protocol data unit)?Then response to this question determines the number of simultaneous transmissions for many network architectures
Consider a communications satellite in geosynchronous orbit. It sits approximately 35,786 km above the Earth's equator. What is the transmission delay in second
You want to send a 200 bytes long message from your machine to a friend's machine via 4 intermediate nodes. You are required to use a header size of 5 bytes
Consider an organization, which has a rented communications channel between two buildings, A and B.
Can the speed in which information is transmitted have an adverse affect on fundamental business decisions?Yes, speed that is traveling at high rates of speed
Commonly, medical digital radiology ultrasound studies consist of about 25 images that are extracted from a full-motion ultrasound examination
Why are computer networks so difficult to secure?