Which layer of the OSI model is primarily concerned with end-to-end communication and network security?
- Layer 2 - Data Link
- Layer 3 - Network
- Layer 5 - Session
- Layer 7 - Application
Layer 3, the Network layer, is primarily concerned with end-to-end communication, routing, and network security by controlling data packet routing.
An organization's new software automatically adjusts user permissions based on their job role and revokes access to certain files when an employee changes departments. This approach to managing user rights is an example of what?
- Attribute-Based Access Control (ABAC)
- Discretionary Access Control (DAC)
- Mandatory Access Control (MAC)
- Role-Based Access Control (RBAC)
This approach to managing user rights is an example of "Role-Based Access Control (RBAC)." RBAC assigns permissions based on a user's role or job function, simplifying permission management and reducing the risk of unauthorized access.
Policies that dictate the criteria for granting access to specific information or systems are called _______ policies.
- Access Control
- Authentication
- Authorization
- Encryption
"Authorization" policies specify who can access what in a system, setting the criteria for granting access to specific resources.
Regularly updating and patching network devices is a key _______ in network security.
- Password
- Principle
- Protocol
- Vulnerability
One of the key principles in network security is regularly updating and patching network devices to fix vulnerabilities and security issues.
To prevent unauthorized access to a wireless network, administrators can implement MAC address _______.
- Broadcasting
- Encryption
- Filtering
- Hiding
MAC address filtering allows or denies access to a network based on the unique hardware address of a device, enhancing security by controlling device access.
A financial institution wants to ensure that even if their data is intercepted during transmission, the intruder wouldn't be able to understand it. They decide to transform this data into a code to prevent unauthorized access. What process are they using?
- Compression
- Decryption
- Encryption
- Hashing
The financial institution is using encryption. Encryption is the process of transforming data into a code to prevent unauthorized access during transmission. It ensures that even if data is intercepted, it remains unintelligible to unauthorized individuals or intruders.
The U.S. federal law that requires financial institutions to explain how they share and protect their customers' private information is known as the _______.
- Computer Fraud and Abuse Act
- Gramm-Leach-Bliley Act
- Patriot Act
- Sarbanes-Oxley Act
The correct answer is the "Gramm-Leach-Bliley Act." This law mandates financial institutions to disclose their information-sharing practices and safeguard customers' private data.
In the context of CSP, what does the 'nonce' attribute help with?
- Controlling content caching
- Enforcing secure data transmission
- Handling session management
- Preventing Cross-Site Scripting (XSS) attacks
In the context of Content Security Policy (CSP), the 'nonce' attribute is used to prevent Cross-Site Scripting (XSS) attacks. It allows a server to generate a unique cryptographic nonce for each page load. The nonce is included in the CSP header, and the browser only executes scripts with a matching nonce, effectively blocking any unauthorized scripts from running on the page.
A _______ is a piece of code that attaches itself to a legitimate program and propagates to other programs and systems.
- Firewall
- Router
- Switch
- Worm
A worm is a self-replicating piece of malicious code that can attach itself to legitimate programs and propagate to other systems without any user intervention. Unlike viruses, worms do not require a host program to attach to.
Zero-day exploits target vulnerabilities that are known to the software vendor but:
- The vendor can't reproduce the issue
- The vendor has not yet released a patch
- The vendor is actively working on a fix
- The vendor refuses to acknowledge the vulnerability
Zero-day exploits target vulnerabilities that are known to the software vendor but do not yet have an official patch or fix available. Hackers exploit these vulnerabilities before the vendor can respond with a patch, potentially causing significant damage or security breaches.