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Question:
(a) Draw the waveform for an asynchronous transmission with the following specifications:
Character "H", one even parity bit, one start bit, one stop bit, and a baud rate of 4800. Assuming the transmission begins at time t = 0, label the starting/ending time for each bit in the transmission.
Note: ASCII value of "H" is 72
(b) Identify the usage of each of the fields of an IEEE 802.3 data frame.
(c) (i) Give 4 main techniques that a firewall would use to filter incoming and outgoing network traffic.
(ii) Discuss both cut-through and store-N-forward switches. Explain their differences and incorporate the advantages and disadvantages of each.
(d) Explain the purpose of the ident and offset fields in an IPv4 packet header.
how to encryt the data in plaintext cipher
a. PKI and PGP are two methods for generating and managing public keys for use in protocols such as secure email. Compare and contrast the trust models for public keys used in PKI
What is the use of it
Data Classification and Management Corporate and military organizations use a several of classification schemes. Information owners are responsible for classifying information a
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Who are the individuals who cause these security problems? Many unauthorized people who cause network security problems for obtaining information about the other users and causi
(a) Describe briefly the difference between flow control and congestion control in relation to a connection-oriented protocol such as TCP. (b) What is the initial rate of data
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