See explanation below.
Explanation:
On the first exhibit, the layout should be as follows





Exhibit 2 as follows
Access Point Name AP2



Exhibit 3 as follows
Access Point Name AP3

Enterprise authentication (such as WPA2-Enterprise) utilizes unique credentials for each user, typically integrating with an authentication server like RADIUS. This allows for tracking and logging user activity, ensuring that all connections can be traced back to individual users. PSKs (Pre-Shared Keys) are shared among users and do not provide individual accountability. Captive portals can identify users but are less secure than enterprise authentication, and Wired Equivalent Privacy (WEP) is outdated and not recommended for security purposes.

* Understanding Switches:
* Layer 2 (Data Link Layer): Traditional switches operate primarily at Layer 2, where they use MAC addresses to forward frames within a local network.
* Layer 3 (Network Layer): Layer 3 switches, also known as multilayer switches, can perform routing functions using IP addresses to forward packets between different networks.
* Capabilities of Multilayer Switches:
* VLANs and Inter-VLAN Routing: Multilayer switches can handle VLAN (Virtual Local Area Network) configurations and perform inter-VLAN routing, enabling communication between different VLANs.
* Routing Protocols: They can run routing protocols like OSPF (Open Shortest Path First) and EIGRP (Enhanced Interior Gateway Routing Protocol) to manage traffic between networks.
* Comparison with Other Devices:
* Hub: Operates only at Layer 1 (Physical Layer) and simply repeats incoming signals to all ports.
* Transceiver: Also operates at Layer 1, converting electrical signals to optical signals and vice versa.
* Modem: Primarily operates at Layer 1 and Layer 2, modulating and demodulating signals for transmission over different types of media.
* Practical Application:
* Multilayer switches are commonly used in enterprise networks to optimize performance and manage complex routing and switching requirements within a single device.
References:
* CompTIA Network+ study materials on network devices and the OSI model.

* Role of the Hosts File:
* The hosts file is a local file on a computer that maps hostnames to IP addresses. It can be used to override DNS resolution by providing a static mapping of a hostname to an IP address.
* Common Issues with the Hosts File:
* If an incorrect IP address is mapped to a hostname in the hosts file, it can cause the computer to resolve the hostname to the wrong IP address. This can lead to navigation issues for specific websites while other users, relying on DNS, do not face the same problem.
* Why Other Options are Less Likely:
* Self-signed certificate: Relates to SSL/TLS and would cause a security warning, not a navigation failure.
* Nameserver record: Affects all users, not just one.
* IP helper: Used to forward DHCP requests and is unrelated to DNS resolution issues.
* Troubleshooting Steps:
* Check the hosts file on the affected user's computer (C:\Windows\System32\drivers\etc\hosts on Windows or /etc/hosts on Unix/Linux).
* Look for entries that map the problematic hostname to an incorrect IP address and correct or remove them.
References:
* CompTIA Network+ study materials and system administration documentation.