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Your friend has a small design shop with Windows NT 4.0, Windows 2000, and Windows XP workstations. He has one older Windows NT computer acting as a file server and a Linux computer running as a firewall on the DSL line. Previous to the current network setup, your friend's shop used what he assumed was the default Windows scheme- NetBIOS over NetBEUI. Now a new client wants your friend's shop to log on to its WINS server so they can share resources more directly. With security in mind, what do you tell your friend to do? Why? What are his (and his client's) alternatives?
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Write down the advantages of some of the current technologies including VoIP, Unified Communications, Virtual Private Networks.
We need to create three types of design decisions according to: i) Choose an appropriate frame size based on constraints. ii) Partition jobs into slices.
Assume it wishes to create four subnets from this block, with each block having same number of IP addresses. Determine the prefixes (of form a.b.c.d/x) for four subnets?
Suppose there is a 10 Mbps microwave link between a geostationary satellite and its base station on earth. What is the propagation delay of the link?
What would be needed along with precautionary measures, and an overview of how the Internet works for the organization's office administration.
Synchronous time division multiplexing is used, along with the standard analog-to-digital sampling rate, and each sample is converted into an 8-bit value?
After reading about attacks on servers like to ones used in one of company's departments, the CIO has asked you to come up with a report as to what.
Prepare a three-column table (one column for each technology) in which you list the advantages and disadvantages of each connection method.
Assume two hosts, A and B, are separated by 10,000 kilometers and are connected by direct link of R =1 Mbps. Assume propagation speed over link is 2.5?108 meters/sec .How long does it take to send file, suppose it is sent continuously?
Consider yourself as the network security technician. Your internetwork connects six buildings through fiber links. You have experienced the numerous attacks on your corporate Web server.
Assume that sender sends silence suppressed RTP stream of G.711 audio to receiver. During talk spurt 20 msecs chunks of quantized audio samples are encapsulated. Determine number of samples are included in each packet?
Assume the material is to be transmitted over T-1 facility (1.544 Mbps). How long will it take, exclusive of overhead, to transmit volume?
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