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Use Wireshark tool to capture packets when you download Lecture 1 from the COIT20229 Course Webpage. Before you undertake this task, you should have Wireshark installed in your home computer/notebook and connected to the Internet. It is advisable that you have attempted the packet capture exercises using Wireshark that are scheduled for Weeks 7-9. This task cannot be completed in any CQUniversity lab.
a) Submit the captured pcap file. You should filter the file so that only TCP traffic is included.
b) What is the server IP address?
c) What is the application layer protocol involved?
d) What is the client port number for data download?
e) What is the server port number for data download?
f) How many data bytes have been downloaded?
g) What is the size of the downloaded Lecture 1 file?
h) Discuss the difference in your answers to parts f) and g). You need to consider the packets formats in your discussion.
Sketch a PPP frame and fill in the fields with bits. The information field contains a link layer control message containing two octets which are all ones. The FCS is 01011001 10100111. Make your sketch in a vertical format that is 32 bits wide.
Describe the effects of spyware and adware. How has spyware and adware influenced public's confidence in security of the Internet?
You have asked to create a report which evaluates possible client/server solutions to handle the new customer application system for all branch offices.
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Suppose a future where security countermeasures against DoS attacks are much more widely implemented than at present.
Host A can send application data into link at 100Mbps but Host B can read out of its TCP receive buffer at maximum rate of 50Mbps. Explain the effect of TCP flow control.
Compare the time for a query and response for a complete DNS query and response (to all required nameservers) if M=1, M=2, and M=3.
Would you recommend security for this network, and if so, what type of security? Discuss the options and justify your choice and design a simple layout of omni directional antennas to cover the entire warehouse.
Make a list describing different common types of server applications. Show which of these applications you would combine together on a single server.
Now that you know more about ConnectSpree's network, you begin drawing a map of its devices and connections, starting with its internal LAN.
Are LANs a stable technology or are they changing just as quickly as other forms of communication technologies? Should software licenses be dropped completely?
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