Human Resource Information Management;
What is the difference between synchronous and asynchronous
training format?
What are the key benefits of Web technology in managing the
content of knowledge management systems?
What service can personalization of knowledge management systems
provide?
What features of web-based collaboration give it advantages over
teleconferencing or videoconferencing?
What are the advantages of web-based training/knowledge
management?
(a) What is the difference between synchronous and asynchronous
stream ciphers.
(b) Who was Horst Feistel?
(c) What is the main weakness of affine ciphers?
(d) What is the Kerckhoffs’ principle?
(e) Suppose a block cipher uses m-to-m bits S-boxes. How many
bits are required to store the look-up table of k different such
m-to-m bits S-boxes? Give a formula in terms of k and m. Hint: A
look-up table for one DES S-box requires 256 bits of storage.
In a communication system, the transmission rate is 1Mbps, the
two ways propagation delay is 1ms, and the processing delay is
negligible. Given the frame length of nf=1250 bytes, ACK frame and
frame overhead of 25 bytes, please find the Stop&Wait ARQ
protocol efficiency with channel bit error rate of 10^-5 .
What is processing delay? What is queuing
delay? What is transmission delay? What ispropagation delay? Explain why a network system should be
designed to have a traffic intensity of no greater than
1.