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While browsing the Web, you click on a link that identifies an Internet host named www.cslab.scholarly.edu. Your browser asks your Domain Name System (DNS) name server, M, to find an Internet address for this domain name. Under what conditions is each of the following statements true of the name resolution process?
A. To answer your query, M must contact one of the root name servers.
B. If M answered a query for www.cslab.scholarly.edu in the past, then it can answer your query without asking any other name server.
C. M must contact one of the name servers for cslab.scholarly.edu to resolve the domain name.
D. If M has the current Internet address of a working name server for scholarly.edu cached, then that name server will be able to directly provide an answer.
E. If M has the current Internet address of a working name server for cslab.scholarly.edu cached, then that name server will be able to directly provide an answer.
Suppose a subnet with prefix 128.119.40.128/26. Provide an example of one IP address (of the form xxx.xxx.xxx.xxx) which can be allocated to this network.
Most homeowners select to install a DSL for Internet connection what kind of networking hardware would you suggest?
By using a laptop computer along with a wireless connection into company’s local area network, you download a Web page from Internet. State all several network connections involved within this operation.
Assuming that switches user store-and-forward packet switching, what is the total end-to-end delay to send a packet of length L? (Ignore queuing, propagation delay, and processing delay.)
Let's figure out what kind of networking equipment an organization would need to buy. You can make assumptions on size and budget. What do we need to purchase?
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.
Determine the Internet bandwidth needs of the medical group and determine the possible providers and expected cost or range of costs for such service.
A quality control manager has used algorithm C4.5 to come up with rules that classify items based on several input factors. The output has two classes -- Accept and Reject. An item classified as Reject is actually good?
Derive a general expression for the width of a bit in terms of the propagation speed s, the transmission rate R, and the length of the link m.
Other building a mainframe computer. What is the best way to connect the workstations to the mainframe computer? Explain your reasoning and all the possible solutions you considered.
You are allocated to work on project to create controller for new satellite. To save money, manager evaluates you could reuse about 90% of the software.
you are asked to investigate and write a report on using Internet phone and the company's existing LAN to replace the company's PBX.
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