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Consider a simple telephone network consisting of two end offices and one intermediate switch with a 1-MHz full-duplex trunk between each end office and the intermediate switch. Assume a 4-kHz channel for each voice call. The average telephone is used to make four calls per 8-hour workday, with a mean call duration of six minutes. Ten percent of the calls are long distance. What is the maximum number of telephones an end office can support?
Suppose computers on your home network are connected to a single hub (a), but now you need to expand the network.
What is the social effect of online social networks? 200 words Describe an experience in facebook. at least 100 words.
Let N users participating in audio/video conference using IP multicasting. Each user is equipped with microphone, a camera, and speakers. How many distinct canonical names are required?
List some of the basic requirements for the data communications and networking required to support the business information needs? Discuss in scholarly detail. Your answer should be of 300 words.
There is an alphabet soup of protocols in TCP/IP - HTTP,FTP,SMTP,POP3,TCP,UDP,IP,ARP,ICMP, and others. What are the characteristics of these protocols? What are they used for?
You have been asked to design a LAN for very successful CPA firm with 5 departments in one building and total of 500 employees.
Suppose users share a 1Mbps link. Also suppose each user requires 100Kbps when transmitting, but each user transmits only 20% of the time. When circuit switching is used, how many users can be supported?
Suppose a BGPv4 router receives update for prefix P which indicates AS1 is next hop.
What kind of network would you install and how would the pieces and components of this network relate to each other? Define each component.
Should Iris have placed CD back at coffee station and forgotten entire thing? Describe why that action would have been ethical or unethical.
Provide subnet assignment which gives contiguous address space to each department. (b) Do same in (a) but with department B having 70 hosts.
You are hired to design, program and implement the PCS system which management calls the Sales and Inventory Management System.
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