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a) Calculate the CRC for the frame below:
Frame: 1101011011
Generator: 10011
Message after appending 4 zero bits: 11010110110000
b) OSI refers to a system in which any number of standards or protocols may be used to address one or more of the functions with any of the layers of the model.
i. State the three responsibilities of the data link layer.
ii. Layer 4, the transport layer provides an additional connection beneath the session layer. What are the 4 considerations that the transport layer ensures?
iii. Explain briefly the role of the physical layer.
c) In the context of IP addressing:
i. What does the message which has only 1's in the address imply?
ii. Which IP address is used by hosts when they are being booted and not used afterwards?
iii. Specify the range of host addresses in a Class D network.
iv. Give the Class E IP address format.
(a) Mention the five main security services. (b) What is a passive attack? Give an example of passive attack? (c) What four types of active attacks and mention their respecti
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I am ryan, i am looking for data security and network assignment help, Do you have experts in data security?
Question 1 (a) Explain briefly the following terms as used in network security: (i) Denial of service (DoS) attack (ii) Birthday attack (iii) DeMilitarized Zone
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