Showing posts with label technology. Show all posts
Showing posts with label technology. Show all posts

Friday

Cyber Security Concept

 

Photo by <a href=”https://unsplash.com/@fantasyflip?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Philipp Katzenberger</a>

Question 1:

Why would a hacker use a proxy server?

Answer: To hide malicious activity on the network.

Proxy servers are often used by hackers to hide their IP addresses and make it more difficult to trace their activities. They can also be used to bypass firewalls and other security measures.

Question 2:

Which of the following is not a factor in securing the environment against an attack on security?

Answer: The education of the attacker.

The education of the attacker is not a factor in securing the environment against an attack. The attacker is always going to be trying to find new ways to exploit vulnerabilities, so it is important to focus on securing the environment from the attacker’s perspective.

Question 3:

What type of attack uses a fraudulent server with a relay address?

Answer: MITM (Man-in-the-Middle).

A MITM attack is an attack where the attacker inserts themselves in the middle of a communication between two parties. The attacker can then intercept and modify the communication as they see fit.

Question 4:

To hide information inside a picture, what technology is used?

Answer: Steganography.

Steganography is the practice of hiding information within another piece of data. This can be done by embedding the information in the least significant bits of the data, or by using some other method of obfuscation.

Question 5:

Which phase of hacking performs actual attacks on a network or system?

Answer: Gaining Access.

The gaining access phase is the phase of hacking where the attacker actually gains access to the network or system. This can be done through a variety of methods, such as exploiting vulnerabilities, social engineering, or phishing.

Question 6:

Attempting to gain access to a network using an employee’s credentials is called in which mode of ethical hacking?

Answer: Social engineering.

Social engineering is a technique used by hackers to trick people into giving up their personal information or clicking on malicious links. This information can then be used to gain access to a network or system.

Question 7:

Which of the following is not a typical characteristic of an ethical hacker?

Answer: Has the highest level of security for the organization.

Ethical hackers are not responsible for the security of an organization. Their job is to find and report vulnerabilities in a system. The organization is responsible for fixing the vulnerabilities and improving the security of the system.

Question 8:

What type of rootkit will patch, hook, or replace the version of system call in order to hide information?

Answer: Kernel level rootkits.

Kernel level rootkits are the most dangerous type of rootkit. They are able to patch, hook, or replace the version of system calls in order to hide information. This makes them very difficult to detect and remove.

Question 9:

What is the purpose of a Denial of Service attack?

Answer: To overload a system so it is no longer operational.

A Denial of Service attack is an attack where the attacker floods a system with so much traffic that it becomes overloaded and unable to function. This can prevent legitimate users from accessing the system.

Question 10:

What are some of the most common vulnerabilities that exist in a network or system?

Answer:

  • Weak passwords: Weak passwords are one of the most common vulnerabilities in a network or system. Hackers can easily crack weak passwords using a variety of methods.
  • Outdated software: Outdated software often contains vulnerabilities that can be exploited by hackers. It is important to keep software up to date to protect against these vulnerabilities.
  • Misconfiguration: Misconfiguration of network devices and systems can create vulnerabilities that can be exploited by hackers. It is important to properly configure network devices and systems to protect against these vulnerabilities.
  • Social engineering: Social engineering is a technique used by hackers to trick people into giving up their personal information or clicking on malicious links. This information can then be used to gain access to a network or system.

Don’t Buy Upgrade Your System

 

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After using few years our system seems lowering its grade compare to current models. Then we go for buy a new one. It is easy however cost effective and many time not require as well. Besides it is not sustainable for environment if it was actually not require to change that laptop or system.

So why not try to upgrade to continue use few more years happily. Let see few option we can do ourselves at our home only.

To upgrade your laptop by yourself, you can follow these general steps:

1. Determine the upgrade options: Identify the components that can be upgraded in your laptop. Common upgradable components include RAM, storage (hard drive or SSD), and sometimes the Wi-Fi card.

2. Research compatible upgrades: Check the specifications and requirements of your laptop model to ensure compatibility with the desired upgrades. Look for compatible RAM modules, storage drives, or other components based on your laptop’s specifications.

3. Prepare necessary tools: Gather the tools you’ll need for the upgrade, such as screwdrivers, anti-static wristbands, and any other specialized tools mentioned in the laptop’s documentation or online resources.

4. Back up your data: Before performing any upgrades, it’s essential to back up your important data to prevent any potential loss or corruption.

5. Follow manufacturer guidelines: Refer to the manufacturer’s documentation or online resources for specific instructions on upgrading your laptop. They may provide detailed guides or videos for the process.

6. Power off and disconnect: Turn off your laptop and unplug it from the power source. For safety, remove the battery if it’s removable.

7. Access the components: Depending on the laptop model, you may need to remove a panel or the keyboard to access the internals. Follow the manufacturer’s instructions to gain access to the component you want to upgrade.

8. Install the new component: Carefully install the upgraded component, such as inserting additional RAM modules or replacing the storage drive. Ensure proper alignment and connections as per the manufacturer’s instructions.

9. Reassemble and test: Put the laptop back together, following the reverse steps of disassembly. Double-check that all connections are secure. Once reassembled, power on the laptop and test the upgraded component to ensure it’s working correctly.

10. Install necessary drivers or software: In some cases, you may need to install specific drivers or software for the new component to function optimally. Check the manufacturer’s website for any required downloads.

Remember, each laptop model may have unique upgrade processes, so it’s crucial to consult the manufacturer’s documentation or seek online resources specific to your laptop model. If you’re unsure about any step or feel uncomfortable performing the upgrade, it’s recommended to seek professional assistance.

To upgrade the RAM (Random Access Memory) in a laptop, you can follow these general steps:

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1. Determine the compatibility: Check the type and specifications of the RAM modules supported by your laptop. Look for information regarding the maximum capacity, speed, and type (e.g., DDR3, DDR4) that your laptop can accommodate.

2. Purchase the new RAM: Based on the compatibility information, purchase the appropriate RAM module(s) for your laptop. Make sure to buy from a reputable source.

3. Prepare necessary tools: Gather the tools you’ll need for the upgrade, such as a screwdriver and an anti-static wristband to prevent electrostatic discharge.

4. Power off and disconnect: Turn off your laptop and unplug it from the power source. For safety, remove the battery if it’s removable.

5. Access the RAM slots: Locate the RAM slots on your laptop. They are usually accessible by removing a panel on the bottom of the laptop. Refer to your laptop’s documentation for the exact location and removal process.

6. Remove the old RAM: Gently release the retaining clips on the sides of the RAM module to free it from the slot. Carefully remove the module from the slot by pulling it straight out.

7. Install the new RAM: Take the new RAM module and align it with the slot, ensuring the notch on the module matches the key in the slot. Insert the module at a slight angle and press it firmly but gently into place. The retaining clips should automatically secure the module.

8. Reassemble and test: Put back any panels or covers you removed earlier. Once reassembled, reconnect the power source and turn on your laptop. It should recognize the new RAM automatically. To confirm the upgrade, check your system properties or use diagnostic software to verify the increased RAM capacity.

It’s important to note that these steps may vary slightly depending on your specific laptop model. Always refer to your laptop’s documentation or manufacturer’s website for detailed instructions tailored to your device. If you encounter any difficulties or feel unsure about the process, consider seeking professional assistance.

To upgrade the battery in a laptop, you can follow these general steps:

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1. Determine the battery type: Identify the specific battery model and type compatible with your laptop. Check your laptop’s documentation or the manufacturer’s website for this information.

2. Purchase a new battery: Purchase a replacement battery from a reputable source. Ensure that the battery you choose is compatible with your laptop model.

3. Power off and disconnect: Turn off your laptop and unplug it from the power source. For safety, remove any connected peripherals and accessories.

4. Locate the battery compartment: The battery compartment is typically located on the bottom of the laptop. Refer to your laptop’s documentation for the exact location and removal process.

5. Remove the old battery: In most cases, the battery will be held in place by latches, screws, or sliding mechanisms. Follow the instructions provided in your laptop’s documentation to safely remove the old battery.

6. Install the new battery: Take the new battery and align it with the battery compartment. Make sure the connectors on the battery align with the corresponding ports in the compartment. Insert the battery carefully and secure it according to the instructions provided.

7. Reconnect and power on: Reconnect any peripherals and accessories you removed earlier. Plug your laptop back into the power source. Turn on your laptop and allow it to boot up.

8. Calibrate the new battery (optional): It is recommended to calibrate the new battery to ensure accurate power readings. This typically involves fully charging the battery and then discharging it completely. Refer to your laptop’s documentation for specific instructions on calibrating the battery.

It’s important to note that these steps may vary slightly depending on your laptop model and manufacturer. Always refer to the documentation provided by your laptop manufacturer for detailed instructions tailored to your device. If you encounter any difficulties or feel unsure about the process, consider seeking professional assistance.

You can find more informaton in internet including youtube. eg. https://www.wikihow.com/Upgrade-a-Laptop

Or if you have an easy to upgradable laptop then super easy to do the upgrade anytime. eg. framework

Thank you any suggestion will be valuable addition.

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