A technician installs a new Ethernet cable between two switches, but the link light does not come up. After testing, the cable is found to have the transmit and receive pairs reversed. Which of the following is the MOST likely cause?

I’m excited to share a personal win — I’ve officially accepted a position at DFW Airport as an Operation Center Specialist. I’ve earned my CompTIA Security+ certification and am currently working toward Network+, continuing to build a strong foundation in IT. This opportunity is a big step forward for me, and I’m grateful to gain experience in a fast-paced, operations-focused environment. My plan is to use this role as a foundation while I continue developing my technical skill set through additional certifications and hands-on lab work. Long term, I’m focused on pivoting deeper into the IT and cybersecurity space, and I’m committed to putting in the work to get there. Appreciate everyone who’s supported me along the way. This is just the beginning.

The OSI Model is how networks actually work. 7 layers. Each with a role.

Location: United States About the Opportunity: The Security Analyst (3rd Shift) plays a critical role in protecting and defending managed detection and response (MDR) customer infrastructure. This position is responsible for monitoring security events, analyzing incidents, and conducting security operations to ensure timely and effective response. The role contributes by maintaining the security posture of clients and collaborating with multiple teams to enhance detection and remediation processes. It operates on a 4x10, third-shift schedule and supports the organization''s mission to provide continuous security coverage. Responsibilities: • Monitor security logs and alerts from intrusion detection systems, endpoint detection and response (EDR) systems, and SIEM tools • Investigate and analyze security incidents to identify root causes and mitigation strategies • Execute security response actions, including remote remediation of endpoints • Perform threat hunting and proactive analysis to uncover security risks and vulnerabilities • Collaborate with product, engineering, and support teams to resolve customer incidents • Mentor junior security analysts with knowledge sharing and best practices • Conduct health checks and architecture reviews, offering technical expertise and recommendations • Advocate for customers by identifying new detection models, product features, and creating knowledge base content • Travel up to 5% as required Requirements: • Proven experience as an MDR security analyst, SOC analyst, or similar role in a fast-paced environment • Experience with remote response and remediation on networks and endpoints • Strong understanding of intrusion detection, AI-based attack detection, incident response, and SOC operations • Familiarity with SIEM tools, log and network analysis, endpoint analysis, and threat intelligence platforms • Solid knowledge of operating systems, networking protocols, and security technologies • Proficiency in incident handling, threat hunting, and forensics

Hello everyone, New here and new to cybersecurity. Came across this group through TikTok and thought I needed this for some guidance as it's the first cybersecurity group I've come across. I'm studying cybersecurity and Cyber forensics in Oman (near the UAE) and would one day love to move to the US. I'm starting out with some basics learning on my own and looking at the pathways and what certs, projects etc... I need to do here. Hopefully I can get some experience here in the local companies. Please offer me your guidance and any tips while I'm starting out. Thank you and nice to meet you all.