N10-009 Free Practice Test

- (Topic 3)
A network technician 13 troubleshooting a specific port on a switch. Which of the following commands should the technician use to see the port configuration?

1. A. show route
2. B. show Interface
3. C. show arp
4. D. show port

Correct Answer: B
To see the configuration of a specific port on a switch, the network technician should use the "show interface" command. This command provides detailed information about the interface, including the current configuration, status, and statistics for the interface.

- (Topic 3)
Following the implementation of a BYOO policy. some users in a high-density environment report slowness over the wireless connection. Some wireless controller reports indicate high latency and airtime contention. Which of the following is the most probable root cause?

1. A. The AP is configured with 2.4GHz frequency, which the new personal devices do not support.
2. B. The AP is configured with 2.4GHz frequency without band-steering capabilities.
3. C. The AP is configured with 5Ghz frequency with band-steering capabiäties.
4. D. The AP is configured with 5Ghz frequenc
5. E. which the new personal devices do not support

Correct Answer: B
Band-steering is a feature that allows an AP to steer dual-band capable clients to the less congested 5GHz frequency, leaving the 2.4GHz frequency for legacy clients. Without band- steering, the AP may have more clients competing for the same channel on the 2.4GHz frequency, resulting in high latency and airtime contention.
References:
✑ According to the CompTIA Network+ Certification Exam Objectives, one of the topics covered in the exam is “Given a scenario, use appropriate wireless technologies and configurations”. One of the subtopics is “Band steering” 1.
✑ According to the PoliFi: Airtime Policy Enforcement for WiFi paper, “Band steering allows the access point to disable the 2.4 GHz band from probing the client device, so it responds only to the 5 GHz band, reducing the congestion on the 2.4 GHz band while taking advantage of the faster 5GHz band to improve user’s network experience.” 2.
✑ According to the Aruba Air Slice Tech Brief, “Air Slice minimizes airtime contention and efficiently groups Wi-Fi 6 and non-Wi-Fi 6 client devices to guarantee bit rate, and provide bounded latency and jitter simultaneously.” 3.

- (Topic 1)
A network administrator is configuring a load balancer for two systems. Which of the following must the administrator configure to ensure connectivity during a failover?

1. A. VIP
2. B. NAT
3. C. APIPA
4. D. IPv6 tunneling
5. E. Broadcast IP

Correct Answer: A
A virtual IP (VIP) address must be configured to ensure connectivity during a failover. A VIP address is a single IP address that is assigned to a group of servers or network devices. When one device fails, traffic is automatically rerouted to the remaining devices, and the VIP address is reassigned to the backup device, allowing clients to continue to access the service without interruption.
References:
✑ CompTIA Network+ Certification Study Guide, Exam N10-007, Fourth Edition, Chapter 6: Network Servers, p. 300

- (Topic 3)
The following DHCP scope was configured for a new VLAN dedicated to a large deployment of 325 loT sensors:

The first 244 loT sensors were able to connect to the TFTP server, download the configuration file, and register to an loT management system. The other sensors are being shown as offline. Which of the following should be performed to determine the MOST likely cause of the partial deployment of the sensors?

1. A. Check the gateway connectivity to the TFTP server.
2. B. Check the DHCP network scope.
3. C. Check whether the NTP server is online.
4. D. Check the loT devices for a hardware failure.

Correct Answer: B

- (Topic 3)
Which of the following must be functioning properly in order for a network administrator to create an accurate timeline during a troubleshooting process?

1. A. NTP
2. B. IP helper
3. C. Syslog
4. D. MySQL

Correct Answer: C