Author Archives: Allen Rodriguez
Network access control is easy to reduce to 802.1X configuration. The current 350-701 SCOR v2.0 scope is broader: guest services, profiling, posture, BYOD, device compliance, application control, 802.1X, MAB, Cisco ISE, CoA, and zero-trust identity context. The architecture works only when identity evidence, policy, edge enforcement, and operational ownership stay aligned. The foundation in network […]
Hybrid cloud security fails when teams treat ‘on-premises’ and ‘cloud’ as two boxes joined by a trusted network link. The current 350-701 SCOR v2.0 blueprint explicitly covers hybrid environments, cloud shared-responsibility models, CASB, Multicloud Defense, Secure Workload, cloud logging, workload security, eBPF, and DevSecOps. The architecture problem is preserving identity, policy, segmentation, secrets, and evidence […]
Endpoint protection becomes more useful when prevention, detection, posture, inventory, and device management are treated as separate controls that exchange evidence. The current 350-701 SCOR v2.0 scope explicitly includes EPP, EDR, MDM/asset inventory, posture assessment, Cisco Secure Client, Cisco Secure Malware Analytics, Secure Endpoint antimalware, and interpretation of malware-detection events. The starting point is security […]
Web and email inspection controls sit in the path between users and some of the most abused application channels in enterprise security. The current 350-701 SCOR v2.0 blueprint distributes web and email safeguards across distinct domains: Network Security 25% names implementing URL filtering, malware protection and intrusion prevention with Cisco Secure Firewall (FTD); Secure Service […]
VPN design becomes much easier to reason about when the tunnel is treated as one part of an access system rather than as the security system itself. The current 350-701 SCOR v2.0 blueprint still includes standards-based IPsec, SSL VPN, virtual tunnel interfaces, DMVPN, FlexVPN, GETVPN, site-to-site deployment, remote-access VPN, and tunnel-establishment troubleshooting. The difficult work […]
A next-generation firewall policy can be syntactically valid and still fail its security objective. A rule may be too broad, traffic may bypass the enforcement point, encrypted sessions may hide the application, identity can be missing, inspection can be disabled, or logging can be insufficient to prove what happened. The current 350-701 SCOR v2.0 explicitly […]
Secure network access is not simply authenticating a username before allowing a device onto the LAN. A modern access decision can include user identity, device identity, authentication method, endpoint type, security posture, location, network context, and the resource being requested. Cisco’s current 350-701 SCOR v2.0 explicitly emphasizes identity, device context, policy-driven access, and ISE-based wired […]
Cable and display questions become much easier when the technician separates physical connector, electrical signaling, protocol, bandwidth, direction, and device capability. A plug that fits does not guarantee the desired resolution, refresh rate, power delivery, data mode, or network speed. That causal model fits the hardware objectives in 220-1201 Core 1 better than memorizing silhouettes. […]
Hardware troubleshooting is not a sequence of favorite fixes. It is a process for reducing uncertainty without destroying the evidence. The current 220-1201 Core 1 heavily emphasizes hardware and network troubleshooting, but the practical habit is broader: define the symptom, establish what normal looks like, identify the highest-value evidence, test one hypothesis, remediate safely, and […]
Power, cooling, and electrical safety belong in one troubleshooting model because they describe the conditions that let hardware operate within design limits. A computer that crashes under load, throttles after several minutes, refuses to start, or damages storage during outages may have a processor, memory, or software symptom while the root cause sits in power […]
RAID is a way of arranging multiple drives to achieve a particular balance of capacity, performance, and tolerance for drive failure. It is not a backup strategy and it does not make every storage workload faster. The decision criteria in the current 220-1201 Core 1 make more sense when RAID is treated as one layer […]
IaaS, PaaS, and SaaS matter to support teams because each model moves a different set of responsibilities across the provider/customer boundary. The current 220-1201 Core 1 asks technicians to understand cloud concepts, but the operational question is more useful: when a user reports a failure, which layer can the support team actually change and which […]
Client virtualization becomes easier to understand when the system is reduced to resources and scheduling. A physical computer has CPU time, memory, storage, network interfaces, and devices. A hypervisor presents virtual hardware to one or more guest operating systems and mediates how those guests consume the host’s real resources. That mechanism sits inside the current […]
Ports make more sense when they are treated as endpoints in a conversation rather than as numbers to memorize. A client chooses an address and transport, opens a connection or sends a datagram toward a service port, and the server process listening on that port decides what happens next. That mechanism-first model fits the networking […]
A small office network looks simple in a diagram: internet connection, router, switch, access point, printer, a few laptops, and perhaps a NAS. In practice, the difficult part is deciding which boundaries should exist before the office grows, which device owns each network function, and how users keep working when one dependency fails. Those practical […]
