Networking
Cisco 200-301: Static Routes and Administrative Distance
Static routing gives the administrator direct control over where a router sends traffic for a destination prefix. That simplicity makes…
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Networking
Cisco 200-301: Standard vs Extended ACLs
IPv4 access control lists are simple in syntax but powerful in effect: they make ordered permit-or-deny decisions on packets before…
Networking
Cisco 200-301: Spanning Tree Root Bridge Design
Spanning Tree Protocol is often introduced as a loop-prevention mechanism, but the root bridge is what turns that mechanism into…
Networking
Cisco 200-301: SNMP and Network Monitoring Fundamentals
Simple Network Management Protocol (SNMP) gives a management system a standardized way to read structured device information, change selected managed…
Networking
Cisco 200-301: REST APIs and JSON for Network Engineers
Network automation starts with a way to represent resources and exchange structured data. REST-style APIs use familiar HTTP concepts to…
Networking
Cisco 200-301: QoS for Converged Networks
Converged enterprise networks carry voice, video, interactive applications, bulk transfers, backups, management traffic, and ordinary web sessions over the same…
Networking
Cisco 200-301: OSPFv2 for Enterprise Networks
Open Shortest Path First version 2 (OSPFv2) is a link-state routing protocol for IPv4. Instead of advertising an entire routing…
Networking
Cisco 200-301: Network Device Management with SSH and AAA
Remote administration is part of the security boundary of every router and switch. A device can have excellent forwarding policy…
Networking
Cisco 200-301: NAT and PAT in IOS
Network Address Translation (NAT) changes IP addressing information as traffic crosses a translation boundary. Port Address Translation (PAT), also called…