N10-009 Exam Dumps - CompTIA Network+ Questions and Answers

Private VLANs (PVLANs)are used tosegment devices on the same subnetand switch so they cannot communicate with each other, while still accessing a shared resource like a router or gateway. This is often used in shared hosting or DMZ environments.

A. ACLs (Access Control Lists)control traffic between networks, not within the same VLAN.

B. Trunkingcarries multiple VLANs between switches but does not isolate devices.

C. Port securitylimits MAC addresses per port but doesn’t isolate communication between ports.

????Reference:

CompTIA Network+ N10-009 Official Objectives: 3.4 – Compare and contrast access control methods.

Confidentiality with Data at Rest: Confidentiality is a core principle of data security, ensuring that data stored (at rest) is only accessible to authorized individuals. This protection is achieved through mechanisms such as encryption, access controls, and permissions.

Privileged Access: The statement "Data can be accessed after privileged access is granted" aligns with the confidentiality principle, as it restricts data access to users who have beengranted specific permissions or roles. Only those with the appropriate credentials or permissions can access the data.

Incorrect Options:

A. "Data can be accessed by anyone on the administrative network." This violates the principle of confidentiality by allowing unrestricted access.

B. "Data can be accessed remotely with proper training." This focuses on remote access rather than restricting access based on privileges.

D. "Data can be accessed after verifying the hash." This option relates more to data integrity rather than confidentiality.

CompTIA Network+ materials on data security principles, particularly sections on confidentiality and access control mechanisms​​.

Comprehensive and Detailed Explanation:

Ajump boxis ahardened, isolated systemthat providessecure accesstocritical infrastructure deviceslike routers and firewalls.

RTO stands forRecovery Time Objective, which defines the maximum acceptable amount of time that a system, application, or function can be down after a failure or disaster. It helps prioritizewhich systems need to be recovered firstbased on their importance to business operations.

SLA (Service Level Agreement)refers to an agreement between a service provider and a customer regarding expected performance and availability, but it does not dictate recovery order.

MTBF (Mean Time Between Failures)is a measure of reliability and time between hardware or system failures.

SIEM (Security Information and Event Management)is a centralized tool for logging and alerting but not relevant to DR recovery prioritization.

????Reference:

CompTIA Network+ N10-009 Official Objectives: 4.4 – Summarize business continuity and disaster recovery concepts.

===========

ADDoS (Distributed Denial of Service) attackis often launched frombotnets— networks of compromised systems (bots or zombies) under the control of an attacker. These devices flood the target with traffic to disrupt services.

A. Evil twin attackis a wireless spoofing method.

C. XML injectiontargets web applications.

D. Brute-force attacksrepeatedly guess passwords but don't involve a botnet by default.

????Reference:

CompTIA Network+ N10-009 Official Objectives: 4.2 – Identify common security threats and vulnerabilities.

Definition of ESP (Encapsulating Security Payload):

ESP is a part of the IPsec protocol suite used to provide confidentiality, integrity, and authenticity of data. ESP encrypts the payload and optional ESP trailer, providing data confidentiality.

ESP Functionality:

ESP can encrypt the entire IP packet, ensuring that the data within the packet is secure from interception or eavesdropping. It also provides options for data integrity and authentication.

ESP operates in two modes: transport mode (encrypts only the payload of the IP packet) and tunnel mode (encrypts the entire IP packet).

Comparison with Other Protocols:

AH (Authentication Header): Provides data integrity and authentication but does not encrypt the payload.

GRE (Generic Routing Encapsulation): A tunneling protocol that does not provide encryption.

UDP (User Datagram Protocol) and TCP (Transmission Control Protocol): These are transport layer protocols that do not inherently provide encryption. Encryption must be provided by additional protocols like TLS/SSL.

Use Cases:

ESP is widely used in VPNs (Virtual Private Networks) to ensure secure communication over untrusted networks like the internet.

Comprehensive and Detailed Explanation:

AContent Delivery Network (CDN)cacheswebsite contentacross multiplegeographically distributed serverstoreduce latency and improve load timesfor users worldwide.

Breakdown of Options:

A. VPN– Encrypts network connections,does not distribute website content.

B. CDN–✅Correct answer.Anetwork of caching serversthat delivers web content faster.

C. SAN–Storage Area Network,not related to web content distribution.

D. SDN–Software-defined networking, which controls network flows butdoes not stage website content.

A full-tunnel VPN routes all of a user's network traffic through the corporate network. This means that the organization can inspect all network traffic for security and compliance purposes, as all data is tunneled through the VPN, allowing for comprehensive monitoring and inspection.References: CompTIA Network+ study materials.

On the first exhibit, the layout should be as follows

Exhibit 2 as follows

Access Point Name AP2

Exhibit 3 as follows

Access Point Name AP3

Comprehensive and Detailed Explanation:

TheCompTIA Troubleshooting Methodologystates thatafter testing the theory, the next step is toestablish a plan of actiontoresolve the issue.

Troubleshooting Steps:

Identify the problem.

Establish a theory of probable cause.

Test the theory to determine the cause.

Establish a plan of action and implement the solution.✅(Correct step)

Verify full system functionality.

Document findings, actions, and outcomes.

Breakdown of Options:

A. Verify full system functionality– Happensafterimplementing the solution.

B. Document the findings and outcomes–Final step, happensafterresolving the issue.

C. Establish a plan of action–✅Correct answer.Comesimmediately afterconfirming the cause.

D. Identify the problem–First step, already completed.