Cisco IOS XR uses Routing Policy Language (RPL) to express route filtering and attribute changes in a structured way that fits large service-provider environments. The […]
Certifications
Certification pathways, exam choices, and practical guidance for IT professionals. Explore the credentials that connect technical skills with your next career step.
Cisco 350-501: Service Provider QoS Design
Service-provider QoS is a resource-allocation architecture, not a collection of interface commands. The 350-501 SPCOR scope includes provider QoS architecture and implementation because a carrier […]
Cisco 350-501: Protecting BGP in Service Provider Networks
BGP protection in a service-provider network has to defend both the routing protocol and the forwarding infrastructure that depends on it. The active 350-501 SPCOR […]
Cisco 350-601: VXLAN EVPN in Cisco Data Centers
VXLAN EVPN gives a data-center fabric a scalable way to carry Layer 2 segments and Layer 3 tenant reachability across an IP underlay. The active […]
Cisco 350-601: ACI Contracts, EPGs, and VRFs
Cisco ACI expresses application connectivity through an object model rather than traditional interface-by-interface firewall rules. The 350-601 DCCOR scope includes ACI and data-center security because […]
Palo Alto Networks NGFW Engineer: PAN-OS Routing and Virtual Routers
A Palo Alto Networks firewall can make the correct security-policy decision and still fail to deliver traffic if routing is wrong. That distinction is fundamental […]
Palo Alto Networks NGFW Engineer: NAT Troubleshooting
PAN-OS NAT troubleshooting becomes much easier when the engineer stops thinking of translation as an isolated rule and instead follows the packet through the firewall’s […]
Palo Alto Networks NGFW Engineer: Decryption Policy
Encrypted traffic creates a visibility problem for any security platform. Palo Alto Networks decryption policy addresses that problem by defining which TLS or SSH sessions […]
Palo Alto Networks NGFW Engineer: Panorama Templates vs Device Groups
Panorama separates centralized firewall management into two major configuration concerns: device/network settings and policy/objects. Templates and template stacks handle much of the device and network […]
Palo Alto Networks NGFW Engineer: PAN-OS High Availability and Failover
PAN-OS high availability is not simply “two firewalls with the same configuration.” A resilient pair depends on control communication, state synchronization, path monitoring, consistent software […]
Palo Alto Networks SSE Engineer: Prisma Access Connectivity Models
Prisma Access becomes much easier to design when every connection type is assigned a clear job. Remote networks attach branches and sites. Mobile-user connectivity protects […]
Palo Alto Networks SSE Engineer: Prisma Access Routing Troubleshooting
Prisma Access routing problems are often misdiagnosed because a tunnel can be healthy while the application path is broken. IPSec state proves that peers can […]
Palo Alto Networks SSE Engineer: Prisma Access Explicit Proxy vs GlobalProtect
Prisma Access can secure mobile users through more than one traffic-steering model, and the right choice depends on what must be protected. GlobalProtect establishes an […]
Palo Alto Networks SSE Engineer: ZTNA Connector for Private Apps
Prisma Access ZTNA Connector is designed for organizations that want to publish private applications without turning every application network into a conventional routed extension. Connector […]
Palo Alto Networks SSE Engineer: Prisma Access Troubleshooting
Strata Cloud Manager gives Prisma Access operators a centralized view of users, branch connectivity, applications, policy, logs, and service health, but effective troubleshooting still depends […]