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Q1.

Which of the following access control models refers to assigning permissions to a user role based on the rules defined for each user role by the administrator?

Answer: D


See the explanation below.

Role-based access control (RBAC) is a type of access control model that refers to assigning permissions to a user role based on the rules defined for each user role by the administrator. In RBAC, the administrator creates different roles and assigns them the appropriate access rights to the resources. The administrator then assigns users to those roles based on their job functions. This way, the administrator can manage the access of users to the resources without having to deal with each user individually. RBAC can simplify the administration, enhance the security, and improve the scalability of the access control system12. Reference: Network Defense Essentials - EC-Council Learning, Role-Based Access Control (RBAC) and Role-Based Security


Q2.

Sarah was accessing confidential office files from a remote location via her personal computer connected to the public Internet. Accidentally, a malicious file was downloaded onto Sarah's computer without her knowledge. This download might be due to the free Internet access and the absence of network defense solutions.

Identify the Internet access policy demonstrated in the above scenario.

Answer: A


See the explanation below.

A permissive policy is a type of Internet access policy that allows users to access the Internet from any device and any location, without any restrictions or security measures. A permissive policy provides convenience and flexibility for the users, but also exposes them to various risks, such as malware infection, data leakage, or cyberattacks. In the scenario, Sarah was accessing confidential office files from a remote location via her personal computer connected to the public Internet, and accidentally downloaded a malicious file onto her computer. This indicates that the organization had a permissive policy for Internet access12. Reference: Network Defense Essentials - EC-Council Learning, Internet Access Policy: Definition and Best Practices


Q3.

Jacob, a network defender in an organization, was instructed to improve the physical security measures to prevent unauthorized intrusion attempts. In this process, Jacob implemented certain physical security controls by using warning messages and signs that notify legal consequences to discourage hackers from making intrusion attempts.

Which of the following type of physical security controls has Jacob implemented in the above scenario?

Answer: D


See the explanation below.

Deterrent controls are a type of physical security controls that use warning messages and signs to notify legal consequences and discourage hackers from making intrusion attempts. Deterrent controls aim to reduce the likelihood of an attack by creating a perception of risk or fear in the potential attackers. Deterrent controls can include fences, locks, alarms, cameras, guards, or security policies12. Reference: Network Defense Essentials - EC-Council Learning, Understanding the Various Types of Physical Security Controls


Q4.

Peter, a security professional, was hired by an organization and was instructed to secure the application and its content from unauthorized access. In this process, Peter implemented a public-key cryptosystem that uses modular arithmetic and elementary number theory for Internet encryption and user authentication.

Which of the following algorithms was employed by Peter in the above scenario?

Answer: A


See the explanation below.

RSA is a public-key cryptosystem that uses modular arithmetic and elementary number theory for Internet encryption and user authentication. RSA stands for Rivest-Shamir-Adleman, the names of the inventors of the algorithm. RSA allows users to generate a pair of keys, one public and one private, that are mathematically related. The public key can be used to encrypt messages or verify digital signatures, while the private key can be used to decrypt messages or create digital signatures. RSA is based on the difficulty of factoring large numbers, which makes it secure and widely used12. Reference: What is Public-Key Cryptosystem in Information Security?, Network Defense Essentials (NDE) | Coursera


Q5.

Which of the following tools is designed to identify and prevent malicious Trojans or malware from infecting computer systems or electronic devices?

Answer: B


See the explanation below.

HitmanPro is a tool that is designed to identify and prevent malicious Trojans or malware from infecting computer systems or electronic devices. HitmanPro is a cloud-based malware scanner that can detect and remove various types of malware, such as viruses, ransomware, spyware, rootkits, etc. HitmanPro can also work alongside other antivirus programs and provide a second opinion on the security status of the system12. Reference: Network Defense Essentials - EC-Council Learning, HitmanPro - Malware Removal Tool | Sophos


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