CompTIA 220-1202: Help Desk Change Control and Documentation
Documenting and Governing Help Desk Changes Help desk work is often judged by how quickly an issue disappears, but repeatable support depends just…
Read article03 / THE LATESTFresh thinking
From the editorial desk.
New technical explainers, certification perspectives and practical ideas.
CompTIA 220-1202: Command-Line Tools for A+ Troubleshooting
Using Command-Line Evidence to Diagnose Windows Problems Command-line tools are valuable because they expose system state quickly, produce repeatable output, and often work…
Read articleCompTIA 220-1201: Virtualization and Cloud Concepts
Virtual Machines, Containers and Cloud Models Virtualization and cloud computing are related because both separate an application or operating environment from a single…
Read articleCompTIA 220-1201: Storage Technologies for Modern PCs
Storage Compatibility, Reliability and Recovery Modern PC storage is no longer a simple choice between a small fast drive and a large slow…
Read articleCompTIA 220-1201: Printers and Peripheral Troubleshooting
Printer and Peripheral Fault Isolation Printers and peripherals create support incidents that cross hardware, drivers, operating systems, networks, consumables, and user workflow. A…
Read articleCompTIA 220-1201: PC Components and Performance Bottlenecks
Diagnosing CPU, Memory, Storage and Power Bottlenecks A slow computer is not a diagnosis. Performance depends on how CPU, memory, storage, graphics, cooling,…
Read articleCompTIA 220-1201: Laptop Hardware and Mobile Device Troubleshooting
Diagnosing Laptop Power, Display and Connectivity Problems Laptops combine the same basic computing functions as desktops with tighter power, thermal, display, wireless, and…
Read articleCompTIA CV0-004: Cloud Resource Management and Capacity
Cloud Capacity, Scaling Limits and Operational Cost Cloud platforms remove much of the procurement delay associated with physical infrastructure, but they do not…
Read articleCompTIA CV0-004: Cloud High Availability & Disaster Recovery
Cloud Availability, RTO, RPO and Recovery Design High availability and disaster recovery are related, but they solve different failure problems. High availability aims…
Read articleCisco 300-410: Route Redistribution Without Routing Loops
Cisco Route Redistribution and Loop-Prevention Policy Route redistribution connects routing domains that were not designed to exchange every route natively. It is common…
Read articleCisco 300-410: Policy-Based Routing in Enterprise Networks
Policy-Based Routing: Scope, Fallback, and Verification Normal IP routing answers one question: which destination prefix has the best route? Policy-based routing (PBR) adds…
Read articleCisco 300-410: OSPF Neighbor and LSA Troubleshooting
OSPF Adjacency, LSA, and Route Troubleshooting OSPF troubleshooting becomes much faster when the engineer distinguishes adjacency formation from link-state database behavior. A router…
Read articleCisco 300-410: MPLS Layer 3 VPN Fundamentals
MPLS Layer 3 VPN: Control Plane and Labels MPLS Layer 3 VPNs let a service-provider network carry multiple customer routing domains across shared…
Read articleCisco 300-410: Troubleshooting ENARSI Infrastructure Services
Enterprise Network Management and Service Diagnostics Enterprise routing problems are not always caused by routing protocols. A router can have correct OSPF, EIGRP,…
Read articleCisco 300-410: EIGRP Troubleshooting in Enterprise Networks
EIGRP Neighbor, DUAL, and Convergence Checks EIGRP troubleshooting is most effective when the engineer treats the protocol as a set of observable decisions:…
Read article