CompTIA Network+ N10-009 - 2026

Delete a VirtualBox virtual machine from VirtualBox Virtual Machine Manager by choosing delete all files to reclaim disk space, or manually delete VM folder from its installed location if needed.

Download the free FileZilla client from filezilla-project.org, install it on Windows, accept the UAC prompt and EULA, skip bloatware, create a desktop icon, and finish installation.

Install Wireshark on Ubuntu using sudo apt install wireshark -y, then start it with sudo wireshark to capture traffic and read it by double-clicking the interface.

Learn how to use ChatGPT to study for your CompTIA exam, note AI hallucinations, verify results with course materials, and beware of questionable practice questions from online sources.

Hold the factory reset button on the back of the Soho router for five seconds, observe the front lights blink, then release and wait for the Wi‑Fi light to stabilize.

Create a free AWS account by entering email, verifying identity by phone, and selecting the 6-month plan with $200 in credit; log in to explore AWS services for lab use.

Learn how to create a free Windows cloud server on EC2, choose Windows Server 2025 Base, and launch the instance, then log in via RDP and terminate to avoid charges.

Explore why Cisco iOS powers networking devices, how it differs from Apple iOS, and why Cisco leads ethernet switches and routers for practical demo success.

Explore the enable command and the user exec and privileged exec modes on Cisco devices, identify mode prompts, and switch modes using enable, with a basic CLI demo.

Learn to use the up and down arrows in Cisco's iOS to cycle through previous commands in packet tracer, enabling quick reuse and correction of typos.

Demonstrate configuring servers in Cisco Packet Tracer by dragging a server, setting default gateway and DNS, and assigning a static IP on Fast Ethernet 0, then explore server services.

Learn to add, edit, and move notes in Cisco Packet Tracer to track interface details like IP addresses without impacting device configurations.

Demonstrate how sniffers in Cisco's packet tracer read traffic between two 2960 switches, show they capture in a single direction, and require two sniffers to view both directions.

Explore the OSI transport layer, distinguishing TCP and UDP with their ports and PDUs. Watch a Wireshark demo on TCP handshakes and packet delivery.

Differentiate intrusion detection systems (ids) from intrusion prevention systems (ips), showing how ids detect intrusions and ips stop them, with false positives as a trade-off.

Prioritize traffic using the quality of service concept, especially voice, to maintain intelligibility while allowing file transfers to continue; throttle streaming to improve overall network performance.

Explore how TTL in the IP header limits a packet’s life by starting at 255 and decreasing at each router to prevent loops and reduce traffic.

Discover Azure network security groups (NSGs) as the ACL service for Azure resources. Learn how to block or allow traffic by ports and IP addresses using NSGs.

Explore cloud service provider characteristics, including multi-tenancy, elasticity, and scalability, with examples from AWS and Google's GCP; learn how elasticity emphasizes speed and scalability denotes size.

Demonstrate telnet on port 23 as a remote command line interface, exposing unencrypted, insecure traffic, installing telnet on Ubuntu, using Wireshark and PuTTY, and SSH as the secure alternative.

Explore how DHCP assigns IP addresses to devices on a network. The DHCP server uses port 67, while clients use port 68, with examples from PCs and smartphones.

Learn how the network time protocol keeps time across devices using an NTP server and clients, with a Packet Tracer demo configuring a router and server on port 123.

Understand https as the secure version of http that uses port 443 and certificates. See a Wireshark demo of TLS 1.3 and TLS 1.2 encrypted traffic, showing data remains unreadable.