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A company that requires full administrative control at the OS level is considering the use of public cloud services. Which of the following service models would BEST fit the company's requirements?
laaS (Infrastructure as a Service) is a public cloud service model that provides access to fundamental compute, network, and storage resources on demand over the public Internet or through dedicated connections. Customers can provision and configure these resources according to their needs, and they have full administrative control at the OS level. This means that customers can install, update, and manage any software or applications they want on the cloud servers, as well as apply their own security and compliance policies. laaS is suitable for companies that require high flexibility and customization of their cloud infrastructure, as well as scalability and cost-efficiency.
A systems administrator is securing a new email system for a large corporation. The administrator wants to ensure private corporate information is not emailed to external users. Which of the following would be MOST useful to accomplish this task?
The most useful tool to prevent private corporate information from being emailed to external users is data loss prevention (DLP). DLP is a type of security solution that monitors and controls the flow of data in and out of a system or network. It can detect and prevent unauthorized access, transmission, or leakage of sensitive data, such as personal information, financial records, or intellectual property. DLP can also enforce encryption, masking, or deletion of sensitive data to protect its confidentiality. Reference:CompTIA Cloud+ Certification Exam Objectives, Domain 2.0 Security, Objective 2.5 Given a scenario, apply data security techniques in the cloud.
A cloud engineer is troubleshooting RSA key-based authentication from a local computer to a cloud-based server, which is running SSH service on a default port. The following file
permissions are set on the authorized keys file:
-rw-rw-rw-1 ubuntu ubuntu 391 Mar S 01:36 authorized _ keys
Which Of the following security practices are the required actions the engineer Should take to gain access to the server? (Select TWO).
The correct answer is C and D.
C . Fix the file permissions with read-only access to the owner of the file.
D . Open port 22 access for the computer's public IP address.
The authorized_keys file on the server should have read-only access for the owner of the file, and no access for anyone else. This ensures that only the owner can read the public keys that are authorized to log in, and no one can modify or delete them. The file permissions can be fixed with the command chmod 400 ~/.ssh/authorized_keys on the server. This is a recommended security practice for SSH key-based authentication123.
The computer that wants to log in to the server using SSH key-based authentication needs to have access to port 22 on the server, which is the default port for SSH service. This can be done by opening port 22 access for the computer's public IP address on the server's firewall or security group settings. This allows the computer to initiate an SSH connection to the server and authenticate with its private key. Opening port 21, which is used for FTP service, is not relevant or secure for SSH key-based authentication1.
A systems administrator is using a configuration management tool to perform maintenance tasks in a system. The tool is leveraging the target system's API to perform these maintenance tasks After a number of features and security updates are applied to the target system, the configuration management tool no longer works as expected. Which of the following is the MOST likely cause of the issue?
The target system's API (Application Programming Interface) functionality has been deprecated is what will most likely cause the issue of configuration management tool no longer working as expected after using it to perform maintenance tasks in a system using its API, and applying features and security updates to it. An API is a set of rules or specifications that defines how different software components or systems can communicate and interact with each other. An API functionality is a feature or function that an API provides or supports, such as methods, parameters, responses, etc. An API functionality can be deprecated when it is no longer maintained or supported by the API provider or developer, and is replaced or removed by a newer or better functionality. The target system's API functionality has been deprecated can cause the issue by making the configuration management tool unable to use or access the API functionality that it relies on to perform maintenance tasks in the system, which may result in errors or failures.
Topic 3, Exam Pool C
An organization will be deploying a web application in a public cloud with two web servers, two database servers, and a load balancer that is accessible over a single public IP.
Taking into account the gateway for this subnet and the potential to add two more web servers, which of the following will meet the minimum IP requirement?
A /28 subnet is a subnet that has a network prefix of 28 bits and a host prefix of 4 bits. A /28 subnet can support up to 16 hosts (14 usable hosts) and has a subnet mask of 255.255.255.240. Using a /28 subnet can meet the minimum IP requirement for deploying a web application in a public cloud with two web servers, two database servers, and a load balancer that is accessible over a single public IP, taking into account the gateway for this subnet and the potential to add two more web servers. Using a /28 subnet can provide enough host addresses for the current and future web servers, database servers, load balancer, and gateway, as well as allow for some growth or redundancy. Reference:CompTIA Cloud+ Certification Exam Objectives, page 15, section 2.8
