N10-009 Exam Dumps - CompTIA Network+ Certification Exam

Comprehensive and Detailed Explanation:

VLANs (Virtual Local Area Networks)segment network trafficby department, allowingACLs (Access Control Lists)to be appliedbased on VLAN membership, improving security and resource isolation.

Breakdown of Options:

A. VLAN–Correct answer.VLANs enablelogical network segmentation, allowingACLs per department.

B. DHCP– Assigns IP addresses butdoes not control access.

C. VPN– Providesremote access,not segmentation within a network.

D. STP– Preventsswitching loops,not related to ACL implementation.

Comprehensive and Detailed Explanation:

Acontent filterblocks access to specificwebsitesbased oncategory, URL, or keywords. This is the best solution torestrict gambling websites.

Breakdown of Options:

A. ACLs– Controlnetwork access,not specific web content.

B. Content filter–✅Correct answer.Used toblock access to unwanted websites.

C. Port security– Preventsunauthorized device connections,not web traffic filtering.

D. Screened subnet– ADMZisolates public-facing servers,not user restrictions.

Definition of ESP (Encapsulating Security Payload):

ESP is a part of the IPsec protocol suite designed to provide confidentiality, integrity, and authenticity of data by encrypting the payload and optional ESP trailer.

Ensuring Confidentiality:

Encryption: ESP encrypts the payload, ensuring that the data remains confidential during transmission. Only authorized parties with the correct decryption keys can access the data.

Modes of Operation: ESP can operate in transport mode (encrypts only the payload) or tunnel mode (encrypts the entire IP packet), both providing strong encryption to secure data between sites.

Comparison with Other Protocols:

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

IKE (Internet Key Exchange): A protocol used to set up a secure, authenticated communications channel, but it does not encrypt the data itself.

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

Implementation:

Use ESP as part of an IPsec VPN configuration to encrypt and secure communication between two sites. This involves setting up IPsec policies and ensuring both endpoints are configured to use ESP for data encryption.

Comprehensive and Detailed Explanation:

Malwarerefers toany malicious softwarethat canexfiltrate confidential data, includingspyware, trojans, and rootkits. This fits the scenario whereunauthorized data transferis occurring.

Breakdown of Options:

A. Adware– Displaysads, doesnot typically steal data.

B. Ransomware– Encrypts filesbut does not exfiltrate data.

C. Darkware–Not a real cybersecurity term.

D. Malware–Correct answer.Malicious software is responsible for unauthorized data exfiltration.

TLS (Transport Layer Security)is the protocol that providesencryption in transit for HTTPS. It ensures data is encrypted between the client (browser) and the web server, protecting it from interception or tampering.

A. SSHis used for secure terminal access, not HTTPS.

C. SCADArefers to control systems, not encryption protocols.

D. RADIUSis an authentication protocol, not for encrypting HTTPS traffic.

📘Reference:

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

CompTIA Network+ N10-009 Official Objectives: 4.6 – Explain authentication and access controls.

Comprehensive and Detailed Explanation:

VXLAN (Virtual Extensible LAN)encapsulates Ethernet frames inside UDP packets, increasing packet size. This can lead tofragmentation and performance degradationunlessJumbo Framesare enabled.

Breakdown of Options:

A. 802.1Q tagging– VLAN tagging enables segmentation but doesnot address fragmentation issues.

B. Spanning tree– STP prevents loops but doesnot improve performancefor VXLAN traffic.

C. Link aggregation– LACP combines links forhigher bandwidthbut doesnot prevent fragmentation.

D. Jumbo frames–Correct answer.EnablingJumbo Framesallows larger packet sizes,reducing fragmentationandimproving VXLAN performance.

In a mesh topology, every node is directly connected to every other node. This provides high redundancy and reliability, as there are multiple paths for data to travel between nodes. This topology is often used in networks where high availability is crucial.References: CompTIA Network+ study materials.