N10-008 CompTIA Network+ Certification Exam Answers and Explanation.

N10-008 CompTIA Network+ Certification Exam Answers and Explanation. QUESTION NO: 1 Which of the following is the MOST effective security control to keep a company's physical perimeter protected against intrusions lev ...

N10-008 CompTIA Network+ Certification Exam Answers and Explanation. QUESTION NO: 1 Which of the following is the MOST effective security control to keep a company's physical perimeter protected against intrusions leveraged by social-engineering techniques? A. Employee training B. Biometric lockers C. Access control vestibule D. Motion detection Answer: A Explanation: The most effective security control to keep a company's physical perimeter protected against intrusions leveraged by social-engineering techniques is employee training. Employee training is a process of educating and raising awareness among staff members about security policies, procedures, and best practices. Employee training can help prevent socialengineering attacks, which are attempts to manipulate or deceive people into revealing sensitive information or granting unauthorized access to resources. Social-engineering techniques can include phishing, impersonation, tailgating, dumpster diving, or baiting. Reference: CompTIA Network+ N10-008 Certification Study Guide, page 343; The Official CompTIA Network+ Student Guide (Exam N10-008), page 13-8. QUESTION NO: 2 An online gaming company needs a cloud solution that will allow for more virtual resources to be deployed when tournaments are held. The number of users who access the service increases during tournaments. The company also needs the resources to return to baseline levels once the resources are not needed in order to reduce cost. Which of the following cloud concepts would provide the best solution? A. Scalability B. Hybrid C. Multitenancy D. Elasticity Answer: D Explanation: Elasticity is the ability of a cloud service to automatically adjust the amount of resources allocated to meet the changing demand of the users. Elasticity enables a cloud service to scale up or down resources quickly and efficiently, without requiring manual intervention or planning. Elasticity is ideal for scenarios where the demand is unpredictable, dynamic, or seasonal, such as online gaming tournaments. By using elasticity, the online gaming company can ensure optimal performance and user experience during peak times, while also saving costs and avoiding overprovisioning during off-peak times. The other options are not correct because they do not address the specific needs of the online gaming company. They are: * Scalability is the ability of a cloud service to handle an increase or decrease in the demand of the users by adding or removing resources. Scalability is similar to elasticity, but it is more manual, planned, and predictive, while elasticity is automatic, prompt, and reactive. Scalability is suitable for scenarios where the demand is steady, predictable, or gradual, such IT Certification Guaranteed, The Easy Way! 2 as a growing business or a long-term project. * Hybrid is a type of cloud model that combines two or more clouds, such as on-premises private, hosted private, or public, that can be centrally managed to enable interoperability for various use cases. Hybrid cloud can offer benefits such as flexibility, security, and costefficiency, but it does not directly address the need for dynamic resource allocation for the online gaming company. * Multitenancy is a feature of cloud services that allows multiple users or customers to share the same physical or virtual resources, such as servers, databases, or applications, while maintaining isolation and privacy. Multitenancy can offer benefits such as efficiency, scalability, and cost-effectiveness, but it does not directly address the need for dynamic resource allocation for the online gaming company. Reference 1: Understand cloud concepts | Microsoft Press Store 2: What Is Hybrid Cloud? - Cisco 3: Difference between Elasticity and Scalability in Cloud Computing 4: Scalability and Elasticity in Cloud Computing - GeeksforGeeks QUESTION NO: 3 A network administrator is configuring a firewall to allow for a new cloud-based email server. The company standard is to use SMTP to route email traffic. Which of the following ports, by default, should be reserved for this purpose? A. 23 B. 25 C. 53 D. 110 Answer: B Explanation: Port 25, by default, should be reserved for SMTP traffic to allow for a new cloud-based email server. SMTP stands for Simple Mail Transfer Protocol, which is a network protocol that enables email communication between mail servers and clients. SMTP uses port 25 as its default port for sending and receiving email messages over TCP/IP networks. A cloud-based email server is an email server that is hosted on a cloud service provider's infrastructure, rather than on-premise or in-house. A cloud-based email server can offer advantages such as scalability, reliability, security, and cost-effectiveness. To allow for a new cloud-based email server, a firewall should be configured to open port 25 for SMTP traffic. Reference: [CompTIA Network+ Certification Exam Objectives], What Is SMTP? | Mailtrap Blog, Cloud Email Server: What Is It & How Does It Work? | Zoho Mail QUESTION NO: 4 A technician is connecting DSL for a new customer. After installing and connecting the onpremises equipment, the technician verifies DSL synchronization. When connecting to a workstation, however, the link LEDs on the workstation and modem do not light up. Which of the following should the technician perform during troubleshooting? A. Identify the switching loops between the modem and the workstation. B. Check for asymmetrical routing on the modem. IT Certification Guaranteed, The Easy Way! 3 C. Look for a rogue DHCP server on the network. D. Replace the cable connecting the modem and the workstation. Answer: D Explanation: If the link LEDs on the workstation and modem do not light up when connecting to a workstation, it could indicate a problem with the cable connecting them. The cable could be damaged, defective, or incompatible with the devices. A technician should replace the cable with a known good one and check if the link LEDs light up. If not, the problem could be with the network interface cards (NICs) on the workstation or modem. Reference: https://www.comptia.org/blog/what-is-link-light QUESTION NO: 5 A non-employee was able to enter a server room. Which of the following could have prevented this from happening? A. A security camera B. A biometric reader C. OTP key fob D. Employee training Answer: B Explanation: A biometric reader is a device that scans a person's physical characteristics, such as fingerprints, iris, or face, and compares them to a database of authorized users. A biometric reader can be used to restrict access to a server room and prevent unauthorized entry. A biometric reader provides a high level of security and cannot be easily bypassed or duplicated.