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NEW QUESTION # 499
A wireless technician wants to implement a technology that will allow user devices to automatically navigate to the best available frequency standard. Which of the following technologies should the technician use?
Answer: A
Explanation:
Band Steering: This technology enables wireless devices to connect to the most optimal frequency band (2.4 GHz or 5 GHz) by encouraging capable devices to switch to the less congested 5 GHz band. This improves overall network performance and prevents overcrowding on the 2.4 GHz band.
Wireless LAN controller (B): This manages multiple access points in a network but does not handle frequency optimization.
Directional antenna (C): This focuses the signal in a specific direction but does not affect frequency selection.
Autonomous access point (D): This operates independently but lacks advanced features like band steering.
Reference: CompTIA Network+ Official Study Guide, Domain 1.6 (Wireless Standards and Technologies).
NEW QUESTION # 500
A new backup system takes too long to copy files to the new SAN each night. A network administrator makes a simple change to the network and the devices to decrease backup times.
Which of the following does the network administrator change?
Answer: B
Explanation:
MTU (Maximum Transmission Unit) defines the largest packet size that can be sent over the network without fragmentation. Increasing the MTU allows larger packets (e.g., jumbo frames), which can reduce overhead and improve throughput, especially for large file transfers like backups.
QoS prioritizes traffic types but doesn't improve file transfer speed directly. SDN (Software- Defined Networking) is an architectural approach, not a simple change. VXLAN is used for network virtualization, not backup performance. TTL (Time To Live) limits packet lifespan but doesn't affect transfer speed.
Changing the MTU can significantly decrease backup times by enabling more efficient data transmission.
NEW QUESTION # 501
A few employees report issues with sessions disconnecting frequently, buffering repeatedly, and performing poorly. Given the following information:
* Employees are in a multitenant office building.
* The Wi-Fi uses 2.4GHz.
* Wireless signals from users range between -50 to -65dBm.
* WPA2 is used.
Which of the following is the most likely cause of the issues?
Answer: D
Explanation:
The correct answer is A. Channel overlap . The signal strength numbers given, -50 to -65 dBm , are generally strong enough for normal client connectivity, so this does not point to weak coverage. The bigger clue is that the environment is a multitenant office building and the wireless network is using 2.4 GHz .
That band is well known for congestion and overlapping channels, especially where many nearby businesses or tenants have their own access points.
In the 2.4 GHz range, there are only a few non-overlapping channels commonly used. When many APs operate close together on overlapping channels, clients can experience interference, retransmissions, poor throughput, buffering, and connection instability. Those symptoms fit the scenario very well.
The other options are less convincing. Insufficient wireless coverage does not line up with the reported signal levels. AP antenna type could matter in some designs, but there is nothing in the question pointing to a directional or placement issue. WPA2 is not the cause of the performance symptoms here; while it is older than WPA3, it does not normally create repeated buffering and disconnections in this way.
This is really a wireless interference question, and in a crowded 2.4 GHz building, channel overlap is the most likely reason.
NEW QUESTION # 502
SIMULATION
A network administrator receives a ticket stating there is a connectivity issue between the server and the storage devices. The administrator needs to identify any issues and implement the appropriate solutions.
INSTRUCTIONS
Click on each access and core switch. Enter commands into the terminal to identify any problems and select the appropriate resolutions. Type help in each terminal to view a list of available commands.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Answer:
Explanation:
Access Switch 1
Commands entered:
show interface GigabitEthernet0/2 status
show interface GigabitEthernet0/2
show interface GigabitEthernet0/2 switchport
Problem discovered: Err-disabled interface
Solution: Disable BPDU Guard
Core Switch 1
Commands entered:
show interface GigabitEthernet0/1 status
show interface GigabitEthernet0/2 status
Problem discovered: No problem found
Solution: None required
Access Switch 2
Commands entered:
show interface GigabitEthernet0/4 status
show interface GigabitEthernet0/4
show interface GigabitEthernet0/4 switchport
Problem: Giants and input errors
Solution: Enable jumbo frames
NEW QUESTION # 503
A network administrator installs wireless access points (APs) inside an industrial warehouse. A wireless survey shows a large amount of electromagnetic interference. Which of the following cable types should the administrator use to connect the APs to the switch?
Answer: B
Explanation:
The correct answer is STP (Shielded Twisted Pair). According to the CompTIA Network+ N10-009 objectives, environments with high levels of electromagnetic interference (EMI)-such as industrial warehouses with heavy machinery, motors, and electrical equipment-require additional protection at the physical layer to maintain signal integrity.
STP cabling includes shielding around the twisted copper pairs that helps block external electromagnetic signals from interfering with data transmission. This shielding significantly reduces crosstalk and EMI, making STP far more suitable than UTP (Unshielded Twisted Pair) in electrically noisy environments. UTP lacks this shielding and is more prone to signal degradation under such conditions.
While fiber-optic cabling (multimode or single-mode) is completely immune to EMI, it is typically not used to directly connect wireless APs in most enterprise deployments. Wireless access points commonly rely on copper Ethernet connections to support Power over Ethernet (PoE), which supplies both data and electrical power over the same cable. Fiber does not natively support PoE, making it impractical for directly powering APs without additional equipment.
The Network+ objectives emphasize selecting appropriate cabling based on environmental factors and operational requirements. In this scenario, STP provides the optimal balance of EMI resistance, Ethernet compatibility, and PoE support, making it the best choice for connecting APs in an industrial warehouse.
NEW QUESTION # 504
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