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Explain the different asymmetric algorithms?
Q Illustrate Return to Zero encoding? - In NRZ-I long strings of 0s may still be a problem - May comprise synchronization as part of the signal for both 1s and 0s - How?
Problem: (a) Application Layer protocols can be classified as connection-oriented or connectionless-oriented. i. What do you understand by the term protocol? ii. Give an e
In communication weakening or loss of signal energy, typically caused by distance
State about data and data files - Information The third and major component of the system liable to be attacked is the data and data files used by the company. It is the most s
The Data link layer performs the following: Responsible for physically passing data from single node to another. Translates messages from the upper layers into data frames and adds
What is the purpose of cables being shielded and having twisted pairs? The main purpose of this is to stop crosstalk. Crosstalks are electromagnetic interferences or noise that
NETWORK MANAGEMENT & SECURITY 1. Describe a basic communication model. 2. State the following terms: a. Configuration Management b. Fault Management c. Security Management
Question: (a) With the help of a diagram, describe a typical DNS system. (b) Using signal sequence or state transition diagrams, illustrate the following scenarios: i.
Define GRE in PPTP?
Electronic Cheques Another mechanism for Internet payment is electronic cheques. With electronic cheques, the payer (either an individual consumer or a business) instructs his
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