CompTIA Updated N10-009 Exam Questions and Answers by kylian

The correct answer is C. Address pool exhaustion. The client has an address in the 169.254.x.x range, which is an APIPA address automatically assigned when a system cannot get a valid IP lease from DHCP. The absence of both a default gateway and a DHCP server entry confirms that the laptop did not receive proper network settings from the DHCP service.

Among the choices, the most likely cause is that the DHCP server has no addresses left in its scope. When the address pool is exhausted, new or renewing clients cannot obtain a lease and must self-assign an APIPA address instead. A client with that kind of address cannot normally reach internal resources such as an intranet site because it lacks the correct network configuration.

The other options do not align with the evidence shown. A short DHCP lease duration could create frequent renewals, but it does not directly explain this output. An IIS malfunction would affect the web server, not the client’s IP assignment. An IDS misconfiguration would not normally cause a host to self-assign a 169.254 address.

This is a DHCP-related problem, and from the available answers, address pool exhaustion is the best explanation.

EIGRP (Enhanced Interior Gateway Routing Protocol) is a Cisco proprietary advanced distance-vector routing protocol. While it operates within an Autonomous System (AS), it requires the AS number to be configured for routers to recognize each other as EIGRP neighbors.

OSPF (Open Shortest Path First) uses areas and routers must be in the same area to form adjacencies, but it doesn ' t require AS numbers in the same way.

FHRP (First Hop Redundancy Protocol) is not a routing protocol but a group of protocols (e.g., HSRP, VRRP) to ensure high availability at the default gateway level.

RIP (Routing Information Protocol) does not use autonomous system numbers.

???? Reference:

CompTIA Network+ N10-009 Official Objectives: 3.1 – Compare and contrast various routing technologies.

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For a web server that requires all connections to be encrypted, port 80 (HTTP) should be disabled. Port 80 is used for unencrypted web traffic, whereas port 443 is used for HTTPS, which provides encrypted communication.

Port 80 (HTTP): This port is used for unsecured web traffic. Disabling this port ensures that all web traffic must use HTTPS, which encrypts the data in transit.

Port 443 (HTTPS): This port is used for secure web traffic via SSL/TLS encryption. Keeping this port open ensures that secure connections can be made to the web server.

Other Ports:

Port 22: Used for SSH, providing secure remote access and file transfers.

Port 587: Used for secure email submission (SMTP) with encryption.

Network References:

CompTIA Network+ N10-007 Official Certification Guide: Discusses the roles and security implications of various ports and protocols.

Cisco Networking Academy: Provides training on secure web server configuration and port management.

Network+ Certification All-in-One Exam Guide: Covers port security and best practices for securing web servers.

Multitenancy is a cloud computing architecture where a single instance of software serves multiple customers or tenants. Each tenant ' s data is isolated and remains invisible to other tenants. Hosting a company application in the cloud to be available for both internal and third-party users fits this concept, as it allows shared resources and infrastructure while maintaining data separation and security. References: CompTIA Network+ Exam Objectives and official study guides.