New Release N10-008 CompTIA Network+ Questions

Out-of-band management is a method of accessing network devices and IT assets through a dedicated channel that is separate from the normal data traffic. This provides a secure and alternate way to administer the network infrastructure, especially in case of failures or emergencies. Remote desktop gateway is a service that allows remote access to desktops and applications on a network. Authentication and authorization controls are mechanisms that verify the identity and permissions of users and devices on a network. Secure Shell is a protocol that encrypts the communication between a client and a server on a network.

 Flow data is a summary of network traffic that can be used to monitor and analyze network performance, utilization, and security. Flow data can provide information such as source and destination IP addresses, ports, protocols, bytes, packets, and timestamps. Flow data can be collected using protocols such as NetFlow, sFlow, or IPFIX. Flow data can help identify the source of network saturation without requiring a full packet capture, which would be impractical on a 40Gb connection with a 10Gb server.

References:

• CompTIA Network+ N10-008 Certification Exam Objectives, page 51
• CompTIA Network+ N10-008 Cert Guide, Chapter 11: Switching Technologies2

 The issue described is related to network congestion and IP address allocation. When a tenant with a large attendance ends its session, the DHCP lease time of 24 hours means that the IP addresses used by that tenant’s attendees are not released back into the pool for a full day. This can lead to an exhaustion of available IP addresses for subsequent tenants.

• D. Change the DHCP scope end to 10.1.10.250: Increasing the DHCP scope end will provide more available IP addresses for allocation, reducing the likelihood of running out of addresses when there are many users.
• G. Reduce the DHCP lease time to four hours: Reducing the DHCP lease time means that IP addresses are released back into the pool more quickly after being allocated, making them available for other users sooner and reducing issues with address exhaustion.

These changes would most likely alleviate issues with users being unable to connect after sessions with large attendances.

References:

• Best practices in managing DHCP include adjusting scope and lease times according to user patterns and network demand.
• Professormesser
• CompTIA Network+ Study Guide

The 802.11n standard is the most suitable option for this scenario. It operates in both the 2.4GHz and 5GHz frequency bands, providing better performance and higher data rates compared to older standards like 802.11b and 802.11g.

• 802.11n (also known as Wi-Fi 4): This standard supports multiple-input and multiple-output (MIMO) technology, which allows for better coverage, increased throughput, and improved reliability. It operates in both the 2.4GHz and 5GHz frequency bands, making it compatible with a wide range of devices. The 5GHz band provides less interference and higher data rates, making it suitable for modern networks.
• 802.11b: This older standard operates only in the 2.4GHz band and has a maximum data rate of 11 Mbps. It is not recommended for high-performance networks.
• 802.11g: This standard also operates in the 2.4GHz band and offers a maximum data rate of 54 Mbps. While it is faster than 802.11b, it is still not as efficient as 802.11n.

References:

• Professor Messer’s Network+ Study Guide
• CompTIA Network+ N10-008 Study Guide