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Message forwarding
A computer in the Computing Department has just been turned on. The user starts up their web browser and requests to see the Macquarie University home page. The home page www.mq.edu.au resides on a server on the administration subnet.!
Describe what happens in getting this request message to the server and how the server gets the response message back to the client.!You should assume (for now, because the MQ network is a bit more complex as will be explained in later lectures) there is one router that connects the Computing network to the Administration network. Each of these networks is a switched LAN.!
You should tell the story of the messages, starting from how the browser formats the request, how it progresses through the stack layers. What happens when we get to the Internet layer (since this machine has not contacted the network before)? What happens in the Data Link layer? What does the switch do? What does the router do? What layers are involved at the switch and the router. How does the server stack deliver the packet to the HTTP server software?!
What possible IEEE 802.11 amendments could be used for the new system? What are the pros and cons of each amendment? Choose an amendment to implement and explain your choice.
A company is interested in upgrading its current core infrastructure, which comprises 2 100mbps switches which connect to a utility room that houses 8 100mbps switches wired with Ethernet Category 5 that run to each client machines.
CIO has asked you to describe why you suggest it is so significant to secure your Windows and Unix/Linux servers from known shortcomings/vulnerabilities.
Investigate the methods by which users could gain access to the network. Pay particular attention to: The problems of having open access for all users.
Distinguish between packet switching and circuit switching: Give three advantages and three disadvantages of each one and discuss four advantages of layering as seen in the TCP/IP architecture.
technical design of network services - You are a consultant being brought in by XUMUC to assist with its merger with another company
New token is put into bucket every 5 μsec. Each token is good for one cell, which comprises 48 bytes of data. Determine the maximum sustainable data rate?
Find out the number of routers the university will require to connect all its buildings to internet (including the main router of the university). Sketch small diagram describing configuration you are suggesting.
If both C1 and C2 at time t0 have congestion window of 10 segments, determine their congestion window sizes after 2200 msec?
Choose all the necessary and suitable MAC address, IP address for interfaces and port addresses implied by the above description. State clearly in your submission the choices you have made for these addresses.
Now that you know more about ConnectSpree's network, you begin drawing a map of its devices and connections, starting with its internal LAN.
The destination network has a maximum packet size of 1240 bits. How many bits,including headers,are delivered to the network-layer ptotocol at the destination?
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