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NEW QUESTION # 272
Users at an organization report that the wireless network is not working in some areas of the building. Users report that other wireless network SSIDs are visible when searching for the network, but the organization's network is not displayed. Which of the following is the most likely cause?
Answer: B
Explanation:
If the company's SSID is not visible in some areas while other networks are still visible, the most likely cause is insufficient wireless coverage. The wireless signal does not reach those areas, meaning additional access points or signal boosters may be required.
NEW QUESTION # 273
A company is hosting a secure that requires all connections to the server to be encrypted. A junior administrator needs to harded the web server. The following ports on the web server. The following ports on the web server are open:
Which of the following ports should be disabled?
Answer: C
Explanation:
For a web server that requires all connections to be encrypted, port 80 (HTTP) should be disabled. Port 80 is used for unencrypted web traffic, whereas port 443 is used for HTTPS, which provides encrypted communication.
Port 80 (HTTP): This port is used for unsecured web traffic. Disabling this port ensures that all web traffic must use HTTPS, which encrypts the data in transit.
Port 443 (HTTPS): This port is used for secure web traffic via SSL/TLS encryption. Keeping this port open ensures that secure connections can be made to the web server.
Port 22: Used for SSH, providing secure remote access and file transfers.
Port 587: Used for secure email submission (SMTP) with encryption.
NEW QUESTION # 274
Which of the following is created to illustrate the effectiveness of wireless networking coverage in a building?
Answer: B
Explanation:
* Definition of Heat Maps:
* A heat map is a graphical representation of data where individual values are represented by colors. In the context of wireless networking, a heat map shows the wireless signal strength in different areas of a building.
* Purpose of a Heat Map:
* Heat maps are used to illustrate the effectiveness of wireless networking coverage, identify dead zones, and optimize the placement of access points (APs) to ensure adequate coverage and performance.
* Comparison with Other Options:
* Logical Diagram: Represents the logical connections and relationships within the network.
* Layer 3 Network Diagram: Focuses on the routing and IP addressing within the network.
* Service-Level Agreement (SLA): A contract that specifies the expected service levels between a service provider and a customer.
* Creation and Use:
* Heat maps are created using specialized software or tools that measure wireless signal strength throughout the building. The data collected is then used to generate a visual map, guiding network administrators in optimizing wireless coverage.
References:
* CompTIA Network+ certification materials and wireless network planning guides.
NEW QUESTION # 275
Which of the following network security devices is deployed out-of-band to monitor traffic without introducing latency?
Answer: B
Explanation:
An IDS (Intrusion Detection System) is deployed out-of-band, meaning it passively monitors network traffic using a SPAN/mirror port or network tap. It detects and analyzes suspicious traffic without introducing latency since it does not sit in-line.
* A. IPS (Intrusion Prevention System) is in-line and can block traffic but may add latency.
* C. Load balancer distributes traffic across servers for performance and redundancy, not for threat detection.
* D. Firewall filters traffic at the perimeter or internally; it can affect latency but does not provide the same in-depth attack analysis.
References (CompTIA Network+ N10-009):
* Domain: Network Security - IDS vs. IPS, in-band vs. out-of-band monitoring, passive detection methods.
NEW QUESTION # 276
After providing a username and password, a user must input a passcode from a phone application. Which of the following authentication technologies is used in this example?
Answer: A
Explanation:
This is an example of Multi-Factor Authentication (MFA) because it requires:
Something you know (username/password)
Something you have (a phone-generated passcode)
NEW QUESTION # 277
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