Free ECCouncil 712-50 Practice Exam with Questions & Answers | Set: 9

 Encrypting Confidential Emails:

Public-key cryptography ensures confidentiality by allowing the sender to encrypt a message using the recipient’s public key. Only the recipient can decrypt it using their private key.

 Key Functionality:

Recipient's Public Key: Encrypts data securely.

Recipient's Private Key: Used exclusively to decrypt the message.

 Why Not Other Options:

A. Your public key: Encrypts messages meant for you, not for others.

B. The recipient's private key: Private keys should never be shared or used for encryption.

D. Certificate authority key: Used for signing certificates, not encrypting messages.

 EC-Council Emphasis:

The correct use of cryptographic keys ensures confidentiality and aligns with secure communication protocols.

Tuning an Intrusion Detection System (IDS) is a critical task that ensures optimal detection of malicious activities while minimizing false positives and false negatives. The most important factor during this process is distinguishing between trusted and untrusted networks because IDS relies heavily on understanding traffic sources and destinations to differentiate legitimate traffic from potential threats.

Identification of Network Zones:

Trusted networks usually include internal enterprise systems with known, monitored activity.

Untrusted networks refer to external sources such as the internet or third-party services that may harbor threats.

Baseline Definition:

By clearly defining what constitutes normal behavior for trusted and untrusted zones, an IDS can be configured to flag anomalies effectively.

Ruleset Customization:

Trusted zones require minimal scrutiny for legitimate internal communications, while untrusted zones often need stricter monitoring.

Reduction of False Positives:

Misclassification between trusted and untrusted zones can lead to excessive alerts or overlooked threats. Proper tuning reduces these errors.

Threat Intelligence Integration:

Ensuring proper network classifications allows seamless integration of threat intelligence feeds, providing accurate detection in untrusted zones while maintaining efficiency in trusted zones.

Detection and Response: EC-Council emphasizes that understanding network boundaries and applying them to security mechanisms, such as IDS, is crucial for effective threat detection.

Network Security Architecture: In EC-Council’s methodologies, classification of trusted/untrusted networks forms the foundation for creating robust security policies.

Strategic Risk Management: Identifying zones also aids in aligning IDS tuning with broader organizational risk management strategies.

EC-Council CISO References:By focusing on trusted and untrusted network delineation during IDS tuning, organizations ensure that their detection systems are both effective and efficient. This process aligns with EC-Council’s principles of maintaining a balance between proactive detection and operational manageability.

 Encapsulating Security Payload (ESP):

ESP is a protocol within the IPSec suite that provides confidentiality, integrity, and authentication for network traffic by encrypting packet payloads.

 Key Features of ESP:

Operates at the network layer.

Ensures data confidentiality and protects against tampering.

 Why Not Other Options:

B. Text-based communication protocol: ESP is not text-based; it deals with encrypted data.

C. Uses TCP port 22: ESP does not operate at the application layer.

D. Uses UDP port 22: Incorrect; ESP typically uses protocol number 50.

 EC-Council Emphasis:

ESP’s role in securing IP communications highlights its importance in modern security architectures.

The process of identifying and classifying assets is integral to Business Impact Analysis (BIA) because it determines which assets are critical to the organization and how their loss would impact business operations. This classification informs risk assessments, disaster recovery plans, and security prioritizations.

Identification of Assets:

Assets include hardware, software, data, and personnel. These are cataloged as part of the BIA to understand their role in business processes.

Classification:

Assets are classified based on criticality and sensitivity, considering how their compromise would affect confidentiality, integrity, or availability.

Mapping Dependencies:

BIA also involves mapping dependencies between assets and business processes to identify cascading impacts.

Determining Impact:

The financial, operational, legal, and reputational impact of asset loss or compromise is assessed.

Foundation for Risk Mitigation:

Asset classification through BIA forms the basis for prioritizing protective measures in disaster recovery and risk management.

Risk and Business Impact: EC-Council emphasizes BIA as a cornerstone in identifying and safeguarding critical business functions and assets.

Asset Management Framework: Proper classification under BIA supports alignment with cybersecurity frameworks like ISO 27001.

EC-Council CISO References:

 Preventing Unauthorized Database Access:

Input sanitization ensures that web applications validate and cleanse user inputs to prevent malicious payloads, such as SQL injection, from being executed.

 Why Input Sanitization Works:

Blocks injection attacks by filtering out harmful characters and queries.

Enforces strict input formats, reducing risks from malicious user input.

 Why Not Other Options:

A. Session encryption: Protects data in transit, not database access.

B. Removing stored procedures: Disrupts functionality without addressing input risks.

D. Library control: Reduces vulnerabilities in dependencies but does not address input directly.

 EC-Council Guidance:

Input validation is a cornerstone of secure coding practices for safeguarding databases from unauthorized access.

 Explanation:

Maintaining power ensures volatile memory (RAM) data is preserved, which can contain critical forensic evidence such as running processes and network connections.

Securing the area prevents tampering or unauthorized access, preserving the integrity of evidence.

 Why Other Options Are Incorrect:

A. Shut-down the computer: Shutting down can result in loss of volatile data critical to the investigation.

C. Place components in anti-static bags: Prematurely removing hardware disrupts the state of the machine and can lead to loss of evidence.

D. Secure the area: While important, it does not address the need to preserve volatile memory.

 EC-Council CISO Reference:

The first-responder guidelines stress the importance of preserving evidence integrity and avoiding actions that could destroy critical forensic data.

 Understanding SQL Injection Attacks:

SQL injection exploits vulnerabilities in an application’s interaction with a database by injecting malicious SQL code to manipulate queries.

 About the Text ' or 1=1 --:

The input ' or 1=1 -- always evaluates to true (1=1) and the -- comments out the rest of the SQL statement.

This allows attackers to bypass authentication or extract unauthorized data.

 Why Not Other Options:

B. /../../../../: Represents a directory traversal attack, not SQL injection.

C. "DROP TABLE USERNAME": A destructive SQL command but not indicative of basic injection techniques.

D. NOPS: Refers to no-operation instructions used in buffer overflow attacks, not SQL injection.

 EC-Council Guidance:

Recognizing and mitigating SQL injection is critical to securing database-driven applications, as emphasized in secure coding practices.

A cold site is a backup facility that provides minimal infrastructure and requires significant time to become operational after a disaster. It typically includes only basic physical space, utilities, and possibly some hardware.

Definition of Backup Sites:

Cold Site: Minimal or no IT infrastructure; requires setting up systems, installing software, and restoring data, leading to the longest recovery time.

Hot Site: Fully equipped with operational IT infrastructure; minimal setup time required for recovery.

Warm Site: Partially equipped with essential systems but requires additional setup and restoration before becoming fully operational.

Mobile Backup Site: Portable and flexible backup sites with quicker setup times but still slower than hot sites.

Recovery Time Comparison:

Cold sites are cost-effective but slowest for recovery.

They are suitable for organizations with lower criticality needs or budget constraints.

Use Cases:

Best for non-critical applications or organizations willing to tolerate extended downtime.

Disaster Recovery Planning: EC-Council outlines the use of backup sites as part of a comprehensive disaster recovery plan, emphasizing the trade-offs between cost and recovery time.

Risk Management Framework: The importance of selecting backup sites based on organizational risk tolerance and business continuity needs is stressed.

EC-Council CISO References: