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Question:
a) There are two basic approaches to dealing with errors in the presence of pipelining. One way is Go-Back-N and the other strategy is Selective Repeat.
i. Explain briefly how Go-Back-N operates.
ii. Demonstrate your understanding on selective repeat.
b) Design the frame format for bit-oriented protocols. Label it appropriately. Show how many bits each part occupies.
c) Different protocols are used on the multiple access channels: polling, ALOHA, amongst others.
i. Explain with respect to performance how CSMA is an improvement over ALOHA?
ii. How is a slotted ALOHA type of satellite packet broadcasting network an improvement over pure ALOHA?
d) 10Base5 cabling is commonly known as thick Ethernet.
i. Demonstrate your understanding on 10Base5 cabling
ii. What is the maximum segment of 10Base5 cabling?
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Vulnerability Identification Specific avenues threat agents can exploit to attack an information asset are known as vulnerabilities. Examine how each threat can be generated and
Question : (a) How does a 2-key rollover differ from the N-key rollover? (b) Why is isolation so important in interfacing? (c) Explain what is software debouncing.
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What do you understand by the term encryption? Also describe the public key cryptography Encryption: Encryption is a method of converting plain text into cipher text. Using thi
Hybrid Cryptography Systems This makes use of different cryptography systems. Except digital certificates, pure asymmetric key encryption is not used extensively. Asymmetric enc
Question: a) Name a method to allow a person to send a confidential email to another person, without risks of a third-party reading the email. Describe briefly the operations
(a) Which PKI (Public Key Infrastructure) model is typically favored by business organization? (b) Give one possible use of the "extensions" field of an X.509 certificate
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