Explain why DNS (Domain Name System) employs a caching mechanism of queries and discuss whether you would recommend using DNS for fast moving mobile users.
Explain why DNS (Domain Name System) employs a caching mechanism of queries and discuss whether you...
2 DNS: Domain Name System (a) Root DNS server (b)TLD DNS server d Local DNS server dns.poly.edu (c) Authoritative DNS server dns.umass.edu Requesting host cis.poly.edu gaia.cs.umass.edu A) Explain the four classes of DNS servers (a, b, c and d) using the above topology B) Explain the procedure of a host to resolve a DNS query using an Iterative query C) Explain the procedure of a host to resolve DNS query using a Recursive Query D) Compare both queries (Iterative and...
The Domain Name System (DNS) is a TCP/IP name resolution system that resolves hostnames to IP addresses. How do you think this relates to the WEB pages we browse?
please give me clear picture Section 1: DNS nslookup The Domain Name System (DNS) translates hostnames to IP addresses, fulfilling a critical role in the Internet infrastructure. In this lab, we’ll take a closer look at the client side of DNS. Recall that the client’s role in the DNS is relatively simple – a client sends a query to its local DNS server, and receives a response back. Much can go on “under the covers,” invisible to the DNS clients,...
Discuss how you would configure your Linux distribution to perform name resolution using DNS. Compare and contrast the following programs which are helpful in debugging TCP/IP networks: nslookup, host, dig, whois. Ensure you provide terminal output in your discussion.
1.DNS can not work if the hostnames are not hierarchal? Explain? 2. Give two scenarios where DNS protocols (from two hosts) gets two different IP address for the same hostname. 3. If you have a 100% reliable network layer, should you use TCP or UDP at the Transport layer? Explain your answer? 4.Is it is possible for an application on top of UDP to have a reliable data transfer? Explain? 5.Suppose that a Web server runs in Host C on...
discuss whether newer strands resemble series circuits or parallel circuits and explain why. What are some pros and cons of using series vs. parallel circuits, not only in Christmas lights but in other household applications? Identify an everyday household use where series circuits would be more useful and explain why. Identify an everyday household use where parallel circuits would be more useful and explain why. Are there situations where it would be useful to use a combination of series and...
Draw the product of each reaction with the mechanism and explain why would you choose one over the other? H DMso
discuss whether or not cloud characteristics are like cloud mechanisms and cloud architectures. Make sure, you explain why. Please provide your response in atleast 500 words.
Explain why the system cannot be solved by matrix inverse methods. Discuss methods that could be used and then solve the system. X_1 + 4x_2 + 5x_3 = 1 2x_1 - x_2 + 6x_3 = -12 X_1 - 5x_2 + x_3 = -13 Why can the system not be solved using matrix inverse methods? The coefficient matrix is singular. The number of variables is not the same as the number of equations. The system can be solved using matrix inverse...
1. You wish to substitute the bromine in the following molecules with a nucleophile. Explain whether the given molecule would react by the Sn1 and Sn2 mechanism and explain why. 1-methyl-1-bromo-cyclohexane, 1-bromopropane, 2-bromohexane. 1.Why does benzyl bromide react under both Sn1 conditions and Sn2 conditions? 2.Why is bromobenzene nonreactive under both Sn1 and Sn2 conditions? 5. If bromocyclohexane reacts faster than chlorocyclohexane in an Sn2 reaction, what could be the reason? 11. Account for the rapid rate of ethanolysis of...