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Revision_Computer Systems and Information Security.docx
Task1.
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the main purpose |
advantage |
disadvantages |
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Nodes |
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Routers |
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Switches |
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Task2. Complete table
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Device |
Characteristic |
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(device for modulating and demodulating a signal) is used to connect computers to the network; |
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sends data only on one channel, determining the route on which you want to send data; |
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a remote computer that, when your machine is connected to it, becomes an intermediary for the subscriber to access the Internet; |
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sends the data received via one of the communication channels to each of the attached channels; |
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connects several networks to one, sends data from one network to another; |
Practical tasks
Task1
Four pieces of paper were found at the scene. The investigation found that they recorded fragments of one IP address. Criminologists have identified these pieces with the letters A, B, C and D.
Restore the IP address.
In the answer, specify the sequence of letters denoting the fragments in the order corresponding to the IP address.
Task2
Conduct the following practical task. Start by opening the command prompt tool and type the following commands. nslookup is used to query the DNS server on Windows computers. Discuss the result in class
Examle:
Task3. Ask the students in the pair to discuss and explain the following scheme
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