A technician was assigned a help desk ticket and resolved the issue. Which of the following should the technician update to assist other technicians in resolving similar issues?
Correct Answer:
C
A knowledge base is a centralized repository of information that can be used by technicians to find solutions to common problems, best practices, troubleshooting guides, and other useful resources12. Updating the knowledge base with the details of the
issue and the resolution can help other technicians who encounter similar issues in the future. It can also reduce the number of tickets and improve customer satisfaction3. References1: The Official CompTIA A+ Core 2 Student Guide (Exam 220-1102), page 10-11 2: CompTIA A+ Certification Exam Core 2 Objectives, page 13 3: CompTIA A+ Core 2 (220-1102) Certification Study Guide, page 10-12
A technician requires graphical remote access to various Windows, Linux, and macOS desktops on the company LAN. The security administrator asks the technician to utilize a single software solution that does not require an external internet connection. Which of the following remote access tools is the technician most likely to install?
Correct Answer:
A
VNC (Virtual Network Computing) is a remote access tool that allows the technician to access and control various Windows, Linux, and macOS desktops on the company LAN using a graphical user interface. VNC does not require an external internet connection, as it works over a local network or a VPN. VNC uses a client-server model, where the server runs on the remote desktop and the client connects to it from another device. VNC can transmit the keyboard and mouse events from the client to the server, and the screen updates from the server to the client, enabling the technician to interact with the remote desktop as if it were local12.
VNC is a better option than the other choices because:
✑ RMM (Remote Monitoring and Management) (B) is not a single software solution, but a category of software solutions that enable IT professionals to remotely monitor, manage, and troubleshoot multiple devices and networks. RMM software may include remote access tools, but also other features such as patch management, backup and recovery, security, reporting, and automation. RMM software may require an external internet connection, as it often relies on cloud- based services or web-based consoles34.
✑ RDP (Remote Desktop Protocol) © is a remote access tool that allows the technician to access and control Windows desktops on the company LAN using a graphical user interface. However, RDP is not compatible with Linux or macOS desktops, unless they have third-party software installed that can emulate or translate the RDP protocol. RDP also has some security and performance issues, such as encryption vulnerabilities, bandwidth consumption, and latency problems56.
✑ SSH (Secure Shell) (D) is a remote access tool that allows the technician to access and control various Windows, Linux, and macOS desktops on the company LAN using a command-line interface. SSH does not require an external internetconnection, as it works over a local network or a VPN. SSH uses encryption and authentication to secure the communication between the client and the server. However, SSH does not provide a graphical user interface, which may limit the functionality and usability of the remote desktop7 .
References:
1: What is VNC? - Definition from Techopedia1 2: How VNC Works - RealVNC2 3: What is Remote Monitoring and Management (RMM)? - Definition from Techopedia3 4: What is RMM Software? - NinjaRMM4 5: What is Remote Desktop Protocol (RDP)? - Definition from Techopedia5 6: Remote Desktop Protocol: What it is and how to secure it - CSO Online6 7: What is Secure Shell (SSH)? - Definition from Techopedia7 : How to Use SSH to Access a Remote Server in Linux or Windows - Hostinger Tutorials
A network technician installed a SOHO router for a home office user. The user has read reports about home routers being targeted by malicious actors and then used in DDoS attacks. Which of the following can the technician MOST likely do to defend against this threat?
Correct Answer:
D
One of the most effective ways to defend against malicious actors targeting home routers for DDoS attacks is to change the default credentials of the router. The default credentials are often well-known or easily guessed by attackers, who can then access and compromise the router settings and firmware. By changing the default credentials to strong and unique ones, a technician can prevent unauthorized access and configuration changes to the router. Adding network content filtering may help block some malicious or unwanted websites but may not prevent attackers from exploiting router vulnerabilities or backdoors. Disabling the SSID broadcast may help reduce the visibility of the wireless network but may not prevent attackers from scanning or detecting it. Configuring port forwarding may help direct incoming traffic to specific devices or services but may not prevent attackers from sending malicious packets or requests to the router. References: CompTIA A+ Core 2 (220-1002) Certification Exam Objectives Version 4.0, Domain 3.3
While browsing a website, a staff member received a message that the website could not be trusted. Shortly afterward, several other colleagues reported the same issue across numerous other websites. Remote users who were not connected to corporate resources did not have any issues. Which of the following is MOST likely the cause of this issue?
Correct Answer:
B
The most likely cause of this issue is that a router was misconfigured and was blocking traffic. This would explain why remote users who were not connected to corporate resources did not have any issues.
A technician is reimaging a desktop PC. The technician connects the PC to the network and powers it on. The technician attempts to boot the computer via the NIC to image the computer, but this method does not work. Which of the following is the MOST likely reason the computer is unable to boot into the imaging system via the network?
Correct Answer:
C
The most likely reason the computer is unable to boot into the imaging system via the network is that the PXE boot option has not been enabled. PXE (Preboot Execution Environment) is an environment that allows computers to boot up over the network, instead of from a local disk. In order for this to work, the PXE boot option must be enabled in the computer's BIOS settings. As stated in the CompTIA A+ Core 2 exam objectives, technicians should know how to enable PXE in BIOS to enable network booting on a computer.
