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You are the Information Security Officer at a medium-sized company (1,500 employees). The CIO has asked you to explain why you recommend it is so important to secure your Windows and Unix/Linux servers from known shortcomings/vulnerabilities, explain to your CIO what you can do to make sure your network infrastructure is more secured.
Write your response in 2-3 Pages
Explore ways to secure a wireless network and present your findings in a brief report(1 page is fine, more is ok). Talk about your own experiences with using a wireless network, including the things you do to keep the network secure.
Illustrate how many protocols and protocol implementations are required to permit all nodes to communicate?
Briefly explain the following three methods of connecting to Internet: Cable Internet service, digital subscriber line, and dial-up Internet service.
List three reasons you might still want to prevent an outsider obtaining free network access by intruding into your wireless network.
Create 3 subnets for this organisation with the first subblock of 250 addresses, the second subblock of 60 addresses and the third subblock of 12 addresses.
Describe Quality of Service (QoS) and explain the motivation behind QoS Referring to the diagram below, configure Routers 1, 2, and 4 with Internet Protocol (IP) addresses, and ping between them to test connectivity. Write down complete commands..
In Lamport'so mutual exclusion protocol, if process i is implementing critical section, Is this still true when there are no messages in transit?
Is the IP address 192.168.12.254 a valid address for use by a computer connected directly to the Internet? Explain your answer. c) Is it possible to divide a class C network into 14 subnets with 15 computers connected to each sub network? Explain..
For the client-server application over TCP why must the server program be executed before the client program? why may the client program be executed before the server program.
You have been asked in order to produce a list of the MAC addresses and the corresponding IP addresses and computer names within your network. Suggest at least two methods in order to complete this task.
Terminal A is sending data to terminal B using a sliding window protocol with the window size equal to 5 and the maximum sequence number equal to 6.
1. Find x and y such that 401x + 34y = 1. Show all calculation 2. Find all primes p for which (4 1 5 5) is not invertible mod p. (this is supposed to be a matrix).
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