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If you have class B network and want to divide it into subnets, each with 126 hosts, which subnet mask must you use? How many networks will be available? Write down the four addresses (broadcast and network number) for network starting at 131.204.18? Subnet mask is 255.255.255.128 or FFFFFF80 or /25 (all equivalent). There will be 512 networks available. Networks: 131.204.18.0, 131.204.18.128 Broadcast: 131.204.18.127, 131.204.18.255 10. Assume you have 300 hosts and wish to have no more than 50 hosts per subnet. Determine size of address block must you request from ISP? How many class C equal addresses would you require? How many subnets would you have left over from allocation?
An entrepreneur is interested in establishing her own world-wide satellite radio infrastructure and has requested your help. Describe and justify the infrastructure that you would develop.
Write down the main components of good security policy? Write down some of the most common attacks, and how can the network be protected against these attacks?
What is the social effect of online social networks? 200 words Describe an experience in facebook. at least 100 words.
Was Charlie exaggerating when he gave Peter an estimate for the time that would be required to crack the encryption key using a brute force attack?
What kinds of wireless WAN services are available today? What standards are involved with wireless WAN services? What kinds of issues might you encounter?
Suppose you could multiplex these signals directly onto SONET STS-1 channel how many MP3 songs could be trasmitted simultaneously?
Describe the network you would recommend and how it would be con?gured with the goal of building a new network that will support the company's needs for the next 3 years with few additional investments.
Assume that routers were subjected to conditions which might cause them to fail fairly often. Would this argue in favor of a VC or datagram architecture? Explain why?
An example of when a failure may occur is if the clinet's MAC address is explicitly excluded in the AP/router configuration. What are the benefits of this authentication scheme?
Determine the expected time to find all users' passwords using dictionary attack? suppose that eight more characters were added to password and that DES algorithm was changed so as to use all 16 password characters.
Explain some of the most significant means for assessing health of existing network. Which do you believe is most significant, and explain why?
Find out whether it's configured to transfer data at 10 Mbps rather than 100 Mbps, as it should be. How could you find this information and change it, if necessary?
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