The most basic definition of a computer virus is an errant software programme that is difficult to detect and that spreads quickly across computer systems, destroying data or interfering with the operation of processor and memory systems. Discuss the many types of software that are associated with computer viruses. Control and security on the Internet and other networks may be achieved via the use of firewall machines and software, which are also known as firewalls. Describe the features and functions of firewalls

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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The most basic definition of a computer virus is an errant software programme that is difficult to detect and that spreads quickly across computer systems, destroying data or interfering with the operation of processor and memory systems.
Discuss the many types of software that are associated with computer viruses.
Control and security on the Internet and other networks may be achieved via the use of firewall machines and software, which are also known as firewalls. Describe the features and functions of firewalls.

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