Macro Virus: These type of virus infects word, excel, PowerPoint, access and other data files. Once infected repairing of these files is very much difficult.
Master boot record files: MBR viruses are memory-resident viruses and copy itself to the first sector of a storage device which is used for partition tables or OS loading programs .A MBR virus will infect this particular area of Storage device instead of normal files. The easiest way to remove a MBR virus is to clean the MBR area,
Boot sector virus: Boot sector virus infects the boot sector of a HDD or FDD. These are also memory resident in nature. As soon as the computer starts it gets infected from the boot sector. Cleaning this type of virus is very difficult.
Multipartite virus: A hybrid of Boot and Program/file viruses. They infect program files and when the infected program is executed, these viruses infect the boot record. When you boot the computer next time the virus from the boot record loads in memory and then start infecting other program files on disk
Polymorphic viruses: A virus that can encrypt its code in different ways so that it appears differently in each infection. These viruses are more difficult to detect.
Stealth viruses: These types of viruses use different kind of techniques to avoid detection. They either redirect the disk head to read another sector instead of the one in which they reside or they may alter the reading of the infected file’s size shown in the directory listing. For example, the Whale virus adds 9216 bytes to an infected file; then the virus subtracts the same number of bytes (9216) from the size given in the directory.
This preview shows page 1 - 3 out of 3 pages.
1. Which of the following are objectives of Malware?A. Provide remote control for an attacker to use an infected machine.B. Investigate the infected user’s local network.C. Steal sensitive data.D. All of the aboveAns : D
2. Malware is short form of ?
Get answer to your question and much more
3. Which of the following is a programs that copy themselves throughout acomputer or network?
Get answer to your question and much more
4. Which is true about Worms ?
Get answer to your question and much more
Get answer to your question and much more
5. Which of the following malware do not replicate or reproduce throughinfection?A. WormsB. Trojans
End of preview. Want to read all 3 pages?
Upload your study docs or become a
Course Hero member to access this document
Tags
Computer virus, Computer worm, a Provide, following malware
A/An ____________ is a computer program that spreads by inserting copies of itself into other executable codes or documents.
- Operating System
- Computer Virus
- Firewall
- Anti-virus
Answer (Detailed Solution Below)
Option 2 : Computer Virus
Free
Teaching Aptitude Mock Test
10 Questions 20 Marks 12 Mins
Malware is short for ‘malicious software’. Malware' is a general term used to refer to a variety of intrusive software. Malware includes various viruses, spy-wares, adware, Trojan horses, worms etc.
Virus: The term ‘Virus’ stands for “Vital Information Resources under Siege”. A computer virus is a self-replicating program containing code that explicitly copies itself into other executable codes or programs.
Types of Viruses | ||
Virus Type | What it does | Example |
Boot Sector Virus | It infects boot sectors on hard /floppy Disks and other bootable devices. | Disk Killer, Stone Virus |
Program or File Virus | It infects executable files such as EXE, BIN, COM, etc. | Sunday and Cascade |
Multipartite Virus | This is hybrid of a program and boot sector virus as they infect both boot sectors and executable files. | Invader and Tequila |
Macro Virus | It infects a Microsoft Word or similar application and causes a sequence of actions to be performed automatically when the application is started. | Word and Nuclear |
Email Virus | This type of viruses is activated and spread in systems when an email attachment is opened. | ILOVEYOU, Melissa |
NOTE:
- An operating system (OS) is a collection of programs that acts as an interface between a user of a computer and the computer hardware. The purpose of an operating system is to provide an environment in which a user may execute the programs.
- A Firewall is a system security framework that screens and controls approaching and active system traffic dependent on certain security rules.
- Antivirus software is a set of programs designed to prevent, detect and remove malwares on computing devices as well as protect against a wide variety of other threats.
Hence, it is clear that a virus is a computer program that spreads by inserting copies of itself into other executable codes or documents.
Last updated on Sep 21, 2022
The UGC (University Grants Commission) has released the UGC NET Admit Card. The admit card has been released for the exam which is scheduled to be held on 30th September 2022. The admit card for the exam scheduled for 1st October 2022 will be released soon. Candidates can download their admit cards through the official portal. The UGC NET CBT exam will consist of two papers - Paper I and Paper II. Paper I will be conducted of 50 questions and Paper II will be held for 100 questions.