CompTIA Updated 220-1101 Exam Questions and Answers by hughie

When configuring a router for a small business, the first setting a technician should configure is DHCP (Dynamic Host Configuration Protocol). DHCP is responsible for automatically assigning IP addresses to devices on the network, which is essential for enabling communication within the network. Without DHCP, devices would not receive the necessary IP configurations to communicate effectively.

A. DHCP: Configuring DHCP first ensures that all devices on the network receive their IP addresses automatically.

Why the other options are incorrect:

B. UPnP: UPnP (Universal Plug and Play) is used for simplifying device connectivity, but it is not a critical setting to configure first.

C. MAC filtering: MAC filtering is a security feature that limits which devices can connect to the network based on their MAC addresses, but it should be set up after basic network configuration.

D. VPN: VPN (Virtual Private Network) settings are for secure remote access, and should be configured after the essential network settings like DHCP are in place.

This topic falls under the Networking domain of the CompTIA A+ Core 1 exam​.

The "Ease of Access" settings in Windows are designed to help make the computer more accessible to users with various needs. Among these settings, there are options to adjust mouse and cursor functionality, including the visibility and behavior of the cursor. Adjusting these settings can resolve issues related to cursor trails, making it a suitable first step in troubleshooting this specific problem.

A loopback plug is a diagnostic tool used to test the functionality of network interfaces by creating a signal loop. In this case, since the user's device is hardwired to the network but cannot access the internet, using a loopback plug can help determine whether the issue is with the network interface card (NIC) or the Ethernet cable.

A. Loopback plug: This tool helps test whether the computer's network interface is functioning properly.

Why the other options are incorrect:

B. Network tap: A network tap is used to monitor network traffic, but it wouldn’t help diagnose the local connectivity issue here.

C. Wi-Fi analyzer: This tool is used to troubleshoot Wi-Fi networks, but since the issue is with a hardwired connection, it’s not applicable.

D. Punchdown tool: A punchdown tool is used to connect network cables to a patch panel or keystone jack. It is not used for diagnosing network issues.

This falls under the Hardware and Network Troubleshooting domain in the CompTIA A+ Core 1 exam​.

For laptops, the most common type of RAM used is Small Outline Dual Inline Memory Module (SODIMM) due to its smaller size compared to DIMMs used in desktops. DDR5 is the latest generation of RAM, offering higher speed and efficiency. ECC (Error-Correcting Code) DIMM DDR5 and Registered DIMM DDR5 are typically used in servers and high-end workstations for error correction and stability, not in standard laptops. High latency DDR5 is not a desirable specification for RAM as lower latency is preferred for faster performance.

References:

CompTIA A+ Core 1 Exam Objectives Section 3.2: Given a scenario, install the appropriate RAM.