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質問 # 313
A support agent receives a report that a remote user's wired devices are constantly disconnecting and have slow speeds. Upon inspection, the support agent sees that the user's coaxial modern has a signal power of -97dB.
正解：C
解説：
A signal power of -97dB indicates a very weak signal, which can cause connectivity issues and slow speeds. Splitters on a coaxial line can degrade the signal quality further, so removing them can help improve the signal strength and overall connection quality.
Signal Quality: Splitters can reduce the signal strength by dividing the signal among multiple lines, which can be detrimental when the signal is already weak.
Direct Connection: Ensuring a direct connection from the modem to the incoming line can maximize signal quality and reduce potential points of failure.
Network Reference:
CompTIA Network+ N10-007 Official Certification Guide: Discusses troubleshooting connectivity issues and the impact of signal strength on network performance.
Cisco Networking Academy: Provides insights on maintaining optimal signal quality in network setups.
Network+ Certification All-in-One Exam Guide: Covers common network issues, including those related to signal degradation and ways to mitigate them.
質問 # 314
A newtwork administrator needs to create an SVI on a Layer 3-capable device to separate voice and data traffic. Which of the following best explains this use case?
正解：B
解説：
An SVI (Switched Virtual Interface) is a logical interface on a Layer 3-capable switch used to route traffic between VLANs. This is particularly useful in environments where voice and data traffic need to be separated, as each type of traffic can be assigned to different VLANs and routed accordingly.
SVI (Switched Virtual Interface): A virtual interface created on a switch for inter-VLAN routing.
VLAN Routing: Enables the routing of traffic between VLANs on a Layer 3 switch, allowing for logical separation of different types of traffic, such as voice and data.
Use Case: Commonly used in scenarios where efficient and segmented traffic management is required, such as in VoIP implementations.
質問 # 315
Network administrators are using the Telnet protocol to administer network devices that are on the 192.168.1.0/24 subnet. Which of the following tools should the administrator use to best identify the devices?
正解：B
解説：
Telnet: Telnet is a protocol used to establish remote connections to devices for administration. It directly communicates with devices on the network and is the best tool for identifying and accessing devices that support it on the subnet.
質問 # 316
SIMULATION
You have been tasked with setting up a wireless network in an office. The network will consist of 3 Access Points and a single switch. The network must meet the following parameters:
The SSIDs need to be configured as CorpNet with a key of S3cr3t!
The wireless signals should not interfere with each other
The subnet the Access Points and switch are on should only support 30 devices maximum The Access Points should be configured to only support TKIP clients at a maximum speed INSTRUCTONS Click on the wireless devices and review their information and adjust the settings of the access points to meet the given requirements.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
正解：
解説：
See explanation below.
Explanation:
On the first exhibit, the layout should be as follows
A screenshot of a computer AI-generated content may be incorrect.
A screenshot of a computer AI-generated content may be incorrect.
A screenshot of a computer AI-generated content may be incorrect.
A screenshot of a computer AI-generated content may be incorrect.
A screenshot of a computer AI-generated content may be incorrect.
Exhibit 2 as follows
Access Point Name AP2
A screenshot of a computer AI-generated content may be incorrect.
A screenshot of a computer AI-generated content may be incorrect.
A screenshot of a computer AI-generated content may be incorrect.
Exhibit 3 as follows
Access Point Name AP3
A screenshot of a computer AI-generated content may be incorrect.
A screenshot of a computer AI-generated content may be incorrect.
A screenshot of a computer AI-generated content may be incorrect.
質問 # 317
A company recently implemented a videoconferencing system that utilizes large amounts of bandwidth. Users start reporting slow internet speeds and an overall decrease in network performance. Which of the following are most likely the causes of the network performance issues? (Select two)
正解：A、E
解説：
When high-bandwidth services like videoconferencing are introduced, two primary factors may degrade performance:
Incorrect QoS Settings (E):QoS (Quality of Service) is used to prioritize traffic. If not configured correctly, critical services like video may not get the necessary bandwidth and prioritization.
Network Congestion (F):Video services consume large amounts of data. If the network doesn't have sufficient bandwidth or is not segmented properly, congestion will slow down all services.
DNS misconfiguration (A) would affect name resolution, not bandwidth.
Malware (C) could degrade performance, but is not tied to the described scenario.
Outdated software (D) may affect performance in some cases, but not directly linked to network congestion in this case.
Inadequate network security (B) isn't likely to cause general slowness related to video traffic.
# So, the most likely culprits are E. Incorrect QoS settings and F. Network congestion.
Reference:CompTIA Network+ N10-009 Official Study Guide - Objective 2.5: "Explain common performance concepts and issues."
質問 # 318
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