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Define Retransmission? Retransmission is a process in which the receiver detects the occurrence of an error and asks the sender to resend the message. Resending is repeated unt
Describe the advantages of Intranet to the organisation The most obvious advantage is that everyone with access to a computer terminal connected to the Intranet can obtain the
State the term - NetBIOS and IMAP NetBIOS: Network Basic Input Output System is an API (applications programming interface) used with other programs to transmit messages betwee
Triggers are special user defined actions usually in the form of stored procedures, that are automatically requested by the server based on data related events. It can perform diff
Error detection and correction The digital traffic stream of second generation systems also lends itself to the use of error detection and correction methods. The result can be
Switching via memory Traditional computers with switching between input and output being doen under direct control of the CPU input and output ports functioned as tr
Originally Linux/UNIX systems had one all-powerful user called root that managed systems. Discuss the risks of having a single root user and how more limited management abilities c
What are the two types of Transmission technologies, basis on which computer networks can be categorized? Broadly there are two types of transmission technology: 1. Broadc
What are firewalls? Firewalls serve to protect an internal network from external attacks. These external threats can be hackers who need to steal data or computer viruses that
Operating system for Server Since 1994, when the original pair of web servers - NCSA HTTPd and CERN HTTPd , were proposed, dozens of commercial and shareware programs have
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