Ace Your 220-1102 A+ Exam

The error message indicates that the security certificate presented by the website has either expired or is not yet valid. This can happen if the computer's clock has the wrong date or time, as SSL/TLS certificates have a specific validity period. If the clock is off by too much, it may cause the certificate to fail to validate. Therefore, the technician should check the computer's date and time and ensure that they are correct.

The most likely agreement in use here is a EULA (End User License Agreement). This is a legally binding agreement between the user and the software developer, outlining the terms and conditions that the user must agree to in order to use the software. It is important that the user understands and agrees to the EULA before they can proceed with downloading and installing the software. As stated in the CompTIA A+ Core 2 exam objectives, users should be aware of the EULA before downloading any software.

ifconfig is a command-line utility that allows you to configure network interfaces on macOS and other Unix-like systems1. To set an IP address using ifconfig, you need to know the name of the network interface you want to configure (such as en0 or en1), and the IP address you want to assign (such as 192.168.0.150). You also need to use sudo to run the command with administrative privileges2. The syntax of the command is:

sudo ifconfig interface address

For example, to set the IP address of en1 to 192.168.0.150, you would type:

sudo ifconfig en1 192.168.0.150

You may also need to specify other parameters such as subnet mask, gateway, or DNS servers, depending on your network configuration3. The other commands are not directly related to setting an IP address on macOS. ipconfig is a similar command for Windows systems4, arpa is a domain name used for reverse DNS lookup, and ping is a command for testing network connectivity.

The user should verify that NFC is enabled on their phone. NFC is a technology that allows two devices to communicate with each other when they are in close proximity2.

NFC (Near Field Communication) technology allows a phone to wirelessly communicate with a payment terminal or other compatible device. In order to use NFC to make a payment or transfer information, the feature must be enabled on the phone. Therefore, the user should verify that NFC is enabled on their phone before attempting to make a payment with it. The other options, such as turning off airplane mode, connecting to Wi-Fi, or enabling Bluetooth, do not pertain to the NFC feature and are unlikely to resolve the issue. This information is covered in the Comptia A+ Core2 documents/guide under the Mobile Devices section.