One, computer viruses, executive summary: the concept of computer viruses, the characteristics of computer viruses, the classification of computer viruses, the control of computer viruses, wow! One, what's a computer virus? Tell me about your knowledge of the virus! My computer must have a virus! Computers have a kind of harmful program that can cause "diseases," which we call computer viruses. In addition, this procedure is referred to as “virus” because it is as replicative as a biological virus. Before being recognized, computer viruses usually show abnormal images on the screen, and data in hard drives are lost or the length of files is changed in directories. The virus
Two, major symptoms, reduced operational efficiency of microcomputers, increased size of enforceable files, increased number of broken discs, unproven information and images on the screen, frequent unprovoked lights on the drive, increased unusual movements, mysterious loss of programs and data, unrecognized filenames, and, first, what is a computer virus? One, what's a computer virus? A computer program prepared by some people. Where did the computer virus come from? Question: computers are often hard to find when they're infected with a virus, so how does a virus program hide inside a computer? One, what's a computer virus? First, what's a computer virus? The concept of computer viruses: definition: computer programs that are damaging to computer systems. Perpetrators; reprisals and vandalism; punitive measures taken against illegal copies. Composition: initial
3. The characteristics of a computer virus, indicating that the virus is parasitic and contagious! Micro-machine viruses are based on disks. , parasitic, computer viruses can be classified from different angles (transmission, destruction). From the hazard of the virus, the virus can be classified as a “good” virus: it does not generally destroy the operating system or the program file and displays words or graphics on the screen only when the conditions are met, such as small ball viruses, peace viruses, christmas viruses
4. Malignant virus: often directly disrupts system or programme documents. (i) the virus is stored in the system when guided by the operating system and the system's interruption vector is modified. For example: the cannabis virus, the pakistani virus; (2) the virus is born on the head or tail of an enforceable document and once it is operated with a toxic document, the virus enters the memory. For example: jewish virus, amiga virus. Three, three, three, if the virus is infected by the virus, the virus can be divided into: the guided area virus, the documentary virus, the hybrid virus, the macrovirus, the internet virus, and the fourth, computer virus. Four, computer virus control, path to virus transmission: four, computer virus control, poison-killing software: kabaski kill, northon personal firewall
5. The anti-virus programme, which works on a continuous basis as soon as it is operational, monitors computer work in real time and gives immediate warning when suspicious phenomena are detected. Fourth, computer virus control, real-time monitoring: building firewalls, if one room fires, the firewalls will prevent it from spreading to the other room, as well as the virus firewalls, and if you have a virus firewall in your calculations, it will automatically perform poison detection and poisoning. For example, you received an e-mail with a virus that the firewall would kill it at the moment of its invasion, and you wouldn't even feel that a virus had struck you. Iv. Control of computer viruses, firewalls: 1, if there is no virus in the system, internal operation of the system will not be infected with the virus, e. G. By implementing internal orders of dos, win, e. G., under dos, by carrying out orders of dir, which will not affect disk infecting the virus. 2. The document is infected with the virus in read-only mode. The virus
6. Change the document to written form. 3. The disk will not be infected with the virus in writing. Because the virus is a program, it is not possible to change the writing protection switch on the disk. Some of the instructions (additional) for common viral infections, 4 or word, are also infected! The word document may contain a program, although it is not an executable. Data files and graphic files like pcx, jpeg, tif are not usually infected with the virus! Viruses are programs, data files generally do not contain programs, and graphic files such as pcx, jpeg, tif do not contain programs, so they are generally not infected with viruses! But some destructive viruses can infect and destroy documents. Back-up files are important. 6 the virus removed from the document does not necessarily restore the document as it is. One, what's a computer virus? Computer virus is a manufactured, parasitic, sexual, sexual
7, sexual and hidden; it destroys computer work programs and data and is not working properly. Special programs, applications or systems, man-made, latent, contagious, destructive, self-suggested: 2, computer virus control: the transmission of computer viruses can take place through , , , . Floppy disks: external diskettes, important diskettes ; cd-roms: use cd-rom software; web: hard disks: , diskettes, hard disks, network, cd-roms, poisons, poisons, backups, originals, real-time monitoring, virus firewalls, 3, the following description, which is correct. A) anti-virus software usually lags behind the emergence of new computer viruses b) anti-virus software is always ahead of the emergence of viruses, which can detect, kill any type of virus c) computers infected with the computer virus have immunity from the virus d) computer viruses can endanger the health of computer users 4 and cause computer disease
The most widespread medium for the spread of poison is a) hard disk b) disk c) internal memory of the internet, a, d 5, and 4 below, which do not feature computer viruses. (a) volatile b) activability c) communicable d) immunity 6, which is possible if a diskette is found to be infected with the virus. (a) to replace the diskette b) with a computer and then use the file on the disk c) to copy the document on the diskette to another disk d) to remove the virus on the diskette or to format the disk on a computer that has confirmed that it is non-virus, d, d, 7, the reason why the virus was created ( ) a) user program error (b) computer hardware failure (c) computer system software error (d) man-made 8 the hazard caused by computer viruses is (). (a) decoding disks (b) destroying computer systems (c) damage to computer memory chips (d) deactivated computer systems (d), d, b, operations: 1, what are the routes of transmission of computer viruses? 2. How to prevent computer viruses? I don't know,
