- (Topic 3)
A company wants to mitigate unauthorized physical connectivity after implementing a hybrid work schedule. Which of the following will the company most likely configure?
Correct Answer:
D
Port security is a feature that allows network administrators to limit the number of devices that can connect to a switch port, based on the MAC address of the device. This can prevent unauthorized physical connectivity by blocking any device that is not on the allowed list or exceeding the maximum number of devices per port. Port security can also trigger an action, such as shutting down the port or sending an alert, when a violation
occurs. References: CompTIA Network+ N10-008 Cert Guide - O’Reilly Media, Chapter 14: Securing a Basic Network, page 512
- (Topic 3)
A network administrator is in the process of installing 35 PoE security cameras. After the administrator installed and tested the new cables, the administrator installed the cameras. However, a small number of the cameras do not work. Which of the following is the most likely reason?
Correct Answer:
B
The power budget is the total amount of power that a PoE switch or injector can provide to the connected PoE devices. If the power budget is exceeded, some of the PoE devices may not receive enough power to function properly. To troubleshoot this issue, the network administrator should check the power consumption of each PoE device and the power capacity of the PoE switch or injector.
References:
✑ PoE Troubleshooting: The Common PoE Errors and Solutions1
✑ Security Camera Won’t Work - Top 10 Solutions to Fix2
✑ CompTIA Network+ N10-008 Exam Objectives https://www.comptia.org/certifications/network#examdetails
- (Topic 3)
A network technician is implementing a solution that will allow end users to gain access to multiple applications after logging on. Which of the following authentication methods would allow this type of access?
Correct Answer:
A
- (Topic 3)
A network administrator Is looking at switch features and is unsure whether to purchase a model with PoE Which of the following devices that commonly utilize PoE should the administrator consider? (Select TWO)
Correct Answer:
AB
Power over Ethernet (PoE) is a technology that allows network-connected devices to receive power over the same Ethernet cables that are used for data transfer. PoE is commonly used to power devices such as VoIP phones and cameras, making it an ideal choice for network administrators looking for a cost-effective solution. PoE is not typically used for other devices such as printers, cable modems, laptops, and UPSs.
- (Topic 3)
An IT intern moved the location of a WAP from one conference room to another. The WAP was unable to boot following the move. Which of the following should be used to fix the issue?
Correct Answer:
D
A PoE injector is a device that provides power over Ethernet (PoE) to a WAP or other network device that does not have a built-in power supply. A PoE injector connects to a power outlet and an Ethernet cable, and sends both power and data to the WAP. If the WAP was moved to a location where there is no power outlet or PoE switch, it would need
a PoE injector to boot up. References:
✑ Part 3 of the current page talks about PoE and PoE injectors as a way to power WAPs.
✑ [This article] explains how PoE injectors work and how to use them.
