Free Practice Questions for CompTIA CS0-002 Exam

Static analysis of the code is a technique that scans the source code or the compiled code of an application without executing it, to identify potential vulnerabilities, errors, or bugs. Static analysis can help uncover all the software vulnerabilities, safeguard the interest of the software’s end users, reduce the likelihood that a defective program will enter production, and preserve the interests of the software producer by improving the quality and security of the code before it is deployed or run1

The human resources department should be involved in incident response, to ensure that the incident response process captures evidence needed in case of disciplinary actions against any employees who may have caused or contributed to the incident, either intentionally or unintentionally. The human resources department can also help with enforcing policies and procedures, communicating with employees, and providing legal or ethical guidance.

 UEFI, or Unified Extensible Firmware Interface, is a specification that defines the software interface between an operating system and platform firmware. UEFI replaces the legacy BIOS (Basic Input/Output System) interface that was used to boot and configure computers. UEFI provides several advantages over BIOS, such as faster boot times, better security features, larger disk support, graphical user interface, etc. One of the security features that UEFI supports is Secure Boot, which is a mechanism that ensures that only authorized software can run during the boot process. Secure Boot prevents unauthorized or malicious code from loading or executing before the operating system starts. Secure Boot works by verifying the digital signature of each piece of boot software against a database of trusted keys stored in UEFI firmware. If the signature is valid, the software is allowed to run; otherwise, it is blocked or rejected.

The security analyst observed that 192.168.12.21 made a TCP connection to 209.132.177.50. This can be inferred from the packet capture output, which shows the following sequence of packets:

Packet 1: A SYN packet from 192.168.12.21 to 209.132.177.50 on port 80 (HTTP). This is the first step of the TCP three-way handshake, where the source initiates a connection request to the destination.

Packet 2: A SYN-ACK packet from 209.132.177.50 to 192.168.12.21 on port 80 (HTTP). This is the second step of the TCP three-way handshake, where the destination acknowledges and accepts the connection request from the source.

Packet 3: An ACK packet from 192.168.12.21 to 209.132.177.50 on port 80 (HTTP). This is the third and final step of the TCP three-way handshake, where the source confirms and completes the connection establishment with the destination.

These packets indicate that a TCP connection was successfully established between 192.168.12.21 and 209.132.177.50 on port 80.

Documenting the respective chain of custody and performing a memory dump of the mobile device for analysis would help during the forensic analysis of the mobile device. The chain of custody is a record of who handled the evidence, when, where, how, and why. The chain of custody helps to preserve the integrity and admissibility of the evidence by preventing tampering, alteration, or loss1. A memory dump is a process of capturing and storing the contents of the device’s memory (RAM) for analysis. A memory dump can help to recover volatile data that may be lost when the device is powered off or rebooted, such as running processes, network connections, encryption keys, or malware traces2.

An incident response plan should cover the most important and likely scenarios that could compromise the security and operations of an organization. According to various sources of best practices123, an incident response plan should start by conducting a risk assessment to identify potential threats and vulnerabilities, and prioritize the critical systems that need to be protected and restored in case of an incident. Focusing on incidents that affect critical systems ensures that the incident response plan covers the most severe and impactful situations that could harm the organization’s mission, reputation, or legal obligations.

Prowler is a tool that can scan AWS environments for security issues and compliance violations. The Prowler report shows that there are two access keys for CloudDev user: access key 1 and access key 2. Access key 1 has not been used in more than 90 days, which violates the AWS CIS benchmark 1.4 (Ensure access keys are rotated every 90 days or less). Therefore, the best recommendation is to delete access key 1 and use access key 2 instead. Deleting CloudDev access key 1, deleting BusinessUsr access key 1, or deleting access key 2 are not appropriate recommendations based on the Prowler report. Reference: https://github.com/toniblyx/prowler

A business impact analysis (BIA) should be completed first before risk calculation and prioritization. A BIA is a process that identifies and evaluates the potential effects of disruptions to critical business functions or processes. A BIA helps to determine the recovery priorities, objectives, and strategies for the organization’s assets and resources1. A BIA is a prerequisite for risk calculation and prioritization because it provides the basis for estimating the impact and likelihood of various threats and vulnerabilities on the organization’s operations, reputation, and finances2.

"Technical controls enforce confidentiality, integrity, and availability in the digital space. Examples of technical security controls include firewall rules, access control lists, intrusion prevention systems, and encryption."

A technical control is a type of control that uses technology or software to protect data and systems from unauthorized access or misuse3. A technical control can include encryption, authentication, firewalls, antivirus software, and other mechanisms that rely on hardware or software. Placing an ACL (access control list) on a file folder is an example of a technical control. An ACL is a list of permissions that specifies who can access or modify a file or folder4. An ACL can help to enforce confidentiality, integrity, and availability of data by restricting access to authorized users only.

The correct answer is A. Enable secure boot in the hardware and reload the operating system. Secure boot is a feature of UEFI that ensures that only trusted and authorized code can execute during the boot process. Secure boot can prevent boot malware, such as rootkits or bootkits, from compromising the system before the operating system loads1. To enable secure boot, the hardware must support UEFI and have a firmware that implements the secure boot protocol. The operating system must also support UEFI and have a digital signature that matches the keys stored in the firmware. If the operating system was installed in legacy mode or does not have a valid signature, it may not boot with secure boot enabled. Therefore, it may be necessary to reload the operating system after enabling secure boot in the hardware2.

B. Reconfigure the system’s MBR and enable NTFS is not correct. MBR stands for Master Boot Record, and it is a legacy partitioning scheme that stores information about the partitions and the boot loader on a disk. NTFS stands for New Technology File System, and it is a file system that supports features such as encryption, compression, and access control. Reconfiguring the system’s MBR and enabling NTFS would not enable secure boot UEFI features, as they are not related to UEFI or secure boot. Moreover, MBR is incompatible with UEFI, as UEFI requires a different partitioning scheme called GPT (GUID Partition Table)3.

C. Set UEFI to legacy mode and enable security features is not correct. Legacy mode is a compatibility mode that allows UEFI systems to boot using legacy BIOS methods. Legacy mode disables some of the features and benefits of UEFI, such as secure boot, faster boot time, or larger disk support. Setting UEFI to legacy mode would not enable secure boot UEFI features, but rather disable them.

D. Convert the legacy partition table to UEFI and repair the operating system is not correct. Converting the legacy partition table to UEFI means changing the partitioning scheme from MBR to GPT, which is required for UEFI systems to boot. However, this alone would not enable secure boot UEFI features, as it also depends on the firmware settings and the operating system support. Repairing the operating system may or may not fix any issues caused by converting the partition table, but it would not necessarily enable secure boot either.

1: What Is Secure Boot? 2: How to Enable Secure Boot 3: MBR vs GPT: Which One Is Better for You? : [UEFI vs Legacy BIOS – The Ultimate Comparison Guide]