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Your cousin Cathy runs a part-time business out of her apartment. She buys and sells collectibles such as antique prints, baseball cards, and cartoon cells and has recently discovered the Web with its many auction sites. She has begun buying and selling on the Web by bidding on collectibles at lesser-known sites and selling them at a pro?t at more well-known sites. She downloads and uploads lots of graphics (pictures of the items she's buying and selling). She is getting frustrated with the slow Internet access she has with her 56-Kbps dial-up modem and asks you for advice. DSL is available at a cost of $60 per month for 1.5 Mbps down and 384 Kbps up. Cable modem service is available for a cost of $50 per month for 1.5 Mbps down and 640 Kbps up. Wireless DSL is available in her apartment building for $45 per month for 1.5 Mbps down and 256 Kbps up. Explain the differences in these services and make a recommendation.
Assume that N Ethernet stations, all trying to send at same time, need N/2 slot times to sort out who transmits next. Describe available bandwidth as function of N.
It is essential to encrypt it, by using solutions like PGP (Pretty Good Privacy), S/MIME (Secure Multi-Purpose Internet Message Exchange), and steganography. Research these different mechanisms.
How would the maturation of the industry worldwide impact your business strategy?
Consider the following method for congestion control in a error-free virtual circuit subnet.
You are requested to upgrade bus topology LAN at a friend's house to a star topology LAN. your friend wishes to connect three computers.
Explain best option for VPN access for employees to remotely access the Ocper, Inc. network and describe your reasoning.
Explain in scholarly detail role of telecommunications operations functions in Telecommunications Asset Life Cycle Model concept?
After choosing unused address from the range given in d for the IP address for a device on the LAN, what would the IP subnet mask and gateway be set to? Explain why these settings would be used.
Assume that we are working on a workstation with an instruction rate of 500 MIPS. How many instructions can the processor execute between the receipt of each individual bit of the message?
A crypto device encrypts each message into 20 bits of ciphertext.What is the entropy of the plaintext message? What is the entropy of the ciphertext message?
How is networking beneficial to a professional in any career field?
Assume that no packet or acknowledgement are dropped. Assume that A sends a packet to C and waits for its acknowledgement to come back from C. How long does it take until A gets that acknowledgement?
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