- (Topic 3)
An application team is deploying a new application. The application team would like the network team to monitor network performance and create alerts if fluctuations in the round- trip time occur for that traffic. Which of the following should the network team monitor to meet this requirement?
Correct Answer:
B
Latency, also known as round-trip time (RTT), is the time it takes for a data packet to travel from a source to its destination and back again. It is a key indicator of network performance and can be used to identify fluctuations that may impact the user experience of an application.
Bandwidth, loss, and cyclic redundancy check (CRC) are other important network performance metrics, but they are not directly related to the application team's requirement to monitor for fluctuations in RTT.
References:
✑ CompTIA Network+ N10-008 Exam Objectives, Objective 1.6: Network Performance Monitoring
✑ CompTIA Network+ N10-008 Study Guide, Chapter 10: Network Performance Monitoring and Troubleshooting
Additional Notes:
✑ The network team can use a variety of tools and techniques to monitor RTT, such as ping, traceroute, and network monitoring software.
✑ When setting up alerts, the network team should consider the acceptable range of RTT for the application. They should also configure alerts to trigger at different levels of severity, so that they can take prompt action to resolve any issues.
- (Topic 3)
A network manager wants to view network traffic for devices connected to a switch. A network engineer connects an appliance to a free port on the switch and needs to configure the switch port connected to the appliance. Which of the following is the best option for the engineer to enable?
Correct Answer:
B
Port mirroring is a feature that allows a switch to copy the traffic from one or more ports to another port, where a network analyzer or a monitoring device can capture and analyze the traffic. Port mirroring is useful for troubleshooting and security purposes, as it allows the network engineer to see the traffic that is passing through the switch without affecting the normal operation of the network.
References
✑ 1: Port Mirroring - CompTIA Network+ Certification (N10-008): The Total Course [Video]
✑ 2: CompTIA Network+ Certification Exam Objectives, page 5
✑ 3: CompTIA Network+ N10-005: 2.1 – Port Mirroring - Professor Messer IT Certification Training Courses
✑ 4: CompTIA Network+ N10-005: 1.4 – Port Mirroring
- (Topic 3)
A medical building offers patients Wi-Fi in the waiting room. Which of the following security
features would be the BEST solution to provide secure connections and keep the medical data protected?
Correct Answer:
A
- (Topic 3)
An organization recently connected a new computer to the LAN. The user is unable to ping the default gateway. Which of the following is the most likely cause?
Correct Answer:
A
The DHCP server is not available is the most likely cause of the issue where a new computer is unable to ping the default gateway. DHCP stands for Dynamic Host Configuration Protocol, which is a network protocol that automatically assigns IP addresses and other configuration parameters to clients on a network. The default gateway is the IP address of the router or device that connects a local network to other networks, such as the internet. Pinging is a network utility that tests the connectivity and reachability between two devices by sending and receiving echo packets. If the DHCP server is not available, the new computer will not be able to obtain an IP address or other configuration parameters, such as the default gateway, from the DHCP server. This will prevent the new computer from communicating with other devices on the network or the internet, resulting in ping failure. References: [CompTIA Network+ Certification Exam Objectives], What Is DHCP? | How DHCP Works | SolarWinds MSP
- (Topic 3)
A business purchased redundant internet connectivity from two separate ISPs. Which of the following is the business MOST likely implementing?
Correct Answer:
C
Multipathing is a technique that allows a device to use more than one path to communicate with another device. This provides redundancy, load balancing, and fault tolerance for network connections. A business that purchased redundant internet connectivity from two separate ISPs is most likely implementing multipathing to ensure continuous access to the internet in case one ISP fails or becomes
congested. References: CompTIA Network+ N10-008 Certification Study Guide, page 437; The Official CompTIA Network+ Student Guide (Exam N10-008), page 16-8.
