Program and system threats are malicious software programs designed to harm your computer and compromise your sensitive information. These threats can range from harmless pop-ups to severe ransomware attacks that can lock you out of your system until you pay a fee. It’s essential to understand the different types of program and system threats and how they can impact your computer to protect yourself and your data.

Understanding Program and System Threats

Malware

Malware, short for “malicious software,” is a type of program or code designed to damage, disrupt, or gain unauthorized access to a computer system or network. There are several types of malware, including:

Virus

A virus is a self-replicating program that attaches itself to a legitimate program and infects other files on your computer. It can cause significant damage to your system, such as deleting files or rendering your computer unusable.

Trojan

A Trojan is a type of malware disguised as a legitimate program. It can give hackers unauthorized access to your computer system, steal your personal information, and damage your files.

Worms

Worms are standalone malware programs that replicate themselves and spread through computer networks. They can cause significant damage to networks and computers, including slowing down internet speeds and disrupting business operations.

Ransomware

Ransomware is a type of malware that encrypts your files and demands payment in exchange for restoring access to your computer system. It’s a severe threat that can result in significant financial loss and the compromise of sensitive data.

Spyware

Spyware is a type of program that secretly collects your personal information and sends it to a third-party without your consent. It can track your internet browsing history, capture your keystrokes, and monitor your online activity.

Adware

Adware is a type of program that displays unwanted ads on your computer system. It can slow down your system and compromise your privacy.

Rootkits

Rootkits are stealthy programs designed to hide the existence of malware on your computer system. They can give hackers unauthorized access to your computer, steal your personal information, and damage your files.

How Program and System Threats Can Impact Your Computer

Program and system threats can have severe consequences for your computer system and personal information. Malware can damage or delete files, slow down your computer, and even render it unusable. Ransomware can lock you out of your computer and demand payment in exchange for restoring access. Spyware and adware can compromise your privacy and display unwanted ads, while rootkits can hide malware and give hackers unauthorized access to your computer.

In addition to compromising your personal information, program and system threats can also impact your business operations. They can slow down network speeds, disrupt workflow, and compromise sensitive business data. This can result in significant financial loss and damage to your business reputation.

Best Practices for Protecting Against Program and System Threats

Fortunately, there are steps you can take to protect yourself and your computer system from program and system threats. Here are some best practices to follow:

Install Antivirus and Anti-Malware Software

Antivirus and anti-malware software can detect and remove threats before they cause significant damage to your computer system. It’s essential to keep your software up to date and perform regular system scans to ensure your computer is free of malware.

Keep Your Software Up to Date

Software updates often include security patches and bug fixes that can protect your computer system from program and system threats. It’s essential to keep your software up to date to ensure you’re protected against the latest threats.

Be Careful with Emails and Downloads

Program and system threats can be spread through email attachments and downloads. It’s essential to be careful when opening emails from unknown sources and downloading files from untrusted websites. Be cautious and only download from trusted sources.

Use Strong Passwords and Two-Factor Authentication

Using strong passwords and two-factor authentication can help protect your personal information and prevent unauthorized access to your computer system. It’s essential to use unique passwords for each account and enable two-factor authentication whenever possible.

Backup Your Data Regularly

Regularly backing up your data can help protect you from data loss caused by program and system threats. It’s essential to backup your data regularly and store it in a secure location.


OS-2022

Q-1.

(a) Write are the functions of operating systems? write a note on multi programmed operating systems ?

(b) Distinguish between client server and peer to peer model of distributed systems .

Q-2.

(a) With a Neat Sketch, Describe the services that an Operating System provides to users, processes and other systems.

(b) What is meant by Storage Structure? Discuss Storage Hierarchy.

(c) Write the Advantages and Disadvantages of using the same system call interface for manipulating both Files and Devices.

Q-3.

(a) What are the criteria for evaluating the CPU scheduling algorithms? Why do we need it?

(b) Define process. Explain various steps involved in change of a process state with process state neat transition diagram.

Q-4.

(a) What is synchronization? Explain how semaphores can be used to deal with n-process critical problem.

(b) Define a thread. Give the benefits of multithreading. What resources are used when a thread is created?

Q-5.

(a) How dose deadlock avoidance differ from deadlock prevention? Write about deadlock avoidance algorithm in detail.

(b) Different between external fragmentation and internal fragmentation. How to solve the fragmentation using paging?

Q-6.

(a) What is the purpose of paging the page table? Consider the following page reference string 1,2,3,4,5,1,2,3,4,5 for a memory with three frames. How many page faults would LRU and FIFO replacement algorithm?

(b) What are the disadvantages of single contiguous memory allocation? Explain.

Q-7.

(a) Briefly explain about single-level, two-level and three Structured directories.

(b) What is disk scheduling? Explain the C-SCAN scheduling by giving an example.

Q-8.

(a) Interrupt and spooling.

(b) UNIX file system.

(c) Program and system threats.