CompTIA N10-009 Actual Questions

Comprehensive and Detailed Explanation:

The issue is thatmore students have arrived on campus, meaningthe available IP addresses are exhausted. To fix this, the administrator shouldincrease the DHCP scope sizeto allow more devices to obtain IP addresses.

Breakdown of Options:

A. Enable IP helper– IP helper is used to forward DHCP requests across different subnets. However, the problem here is thatthe DHCP scope is full, not that requests are not reaching the server.

B. Change the subnet mask– The subnet mask determines the number of available hosts, butchanging it without increasing the IP pool does not help.

C. Increase the scope size–Correct answer.Expanding the DHCP scope provides more IP addresses for assignment.

D. Add address exclusions– ExclusionsreserveIP addresses, which would further reduce available addresses instead of solving the issue.

Understanding Link Aggregation:

Definition: Link aggregation combines multiple network connections into a single logical link to increase bandwidth and provide redundancy.

Usage in High-Bandwidth Scenarios:

Combining Links: By aggregating multiple 1Gbps connections, the facility can utilize the full 2.5Gbps bandwidth provided by the ISP.

Benefits: Enhanced throughput, load balancing, and redundancy, ensuring better utilization of available bandwidth.

Comparison with Other Options:

802.1Q Tagging: Used for VLAN tagging, which does not affect the physical bandwidth utilization.

Network Address Translation (NAT): Used for IP address translation, not related to link speed or bandwidth aggregation.

Port Duplex: Refers to the mode of communication (full or half duplex) on a port, not the aggregation of bandwidth.

Implementation:

Configure link aggregation (often referred to as LACP - Link Aggregation Control Protocol) on network devices to combine multiple physical links into one logical link.