A+ Changed 220-1102 Questions

The scenario described is characteristic of a malware tactic known as scareware, where users are tricked into installing malware through false alerts claiming that their system is infected. The anti-malware software installed in response to a pop-up is likely malicious, causing the system to run slowly and display frequent pop-ups.

DNS (Domain Name System) lookups are essential for translating human-friendly domain names into IP addresses that computers use to communicate. DNS typically uses port 53 for its communication.

In the provided firewall output, various ports are either allowed or blocked for outgoing traffic. For DNS recursion, which is the process of resolving domain names to IP addresses, port 53 must be open.

Port 53: This is the standard port used by DNS for queries and responses. The fact that it is currently blocked (as per the firewall output) is the reason why DNS lookups are failing. Opening port 53 will allow the DNS requests to pass through the firewall, enabling the resolution of domain names to IP addresses.

Other ports mentioned in the output are used for different services and protocols:

Port 1 is generally not used for standard services.

Port 445 is associated with SMB (Server Message Block) for file sharing in Windows environments.

Port 123 is used by NTP (Network Time Protocol) for time synchronization.

Port 80 is used for HTTP traffic, which is web traffic but not related to DNS lookups.

The "tracert" command is used to view the path that network traffic takes from a PC to a specified destination. It is helpful in identifying where along the path the traffic may be failing or experiencing delays. In the scenario where a customer service representative can't send jobs to a remote printer but can print locally, "tracert" can help diagnose if there's a network routing issue affecting the connection to the remote branch office.

For a company looking to transition away from face-to-face meetings, videoconferencing and screen-sharing software would be most beneficial.

Videoconferencing software allows participants to conduct virtual meetings with audio and video capabilities, effectively simulating a face-to-face interaction without the need for physical presence. This can greatly reduce travel costs and time while maintaining the personal touch of meetings.

Screen-sharing enables participants in a virtual meeting to view one another's computer screens in real time. This is particularly useful for presentations, collaborative work, and troubleshooting, as it allows for a more interactive and engaging meeting experience.

Both technologies support the company's goal of leveraging modern technology to enhance communication and collaboration while reducing reliance on physical meetings.