CISCO Routing Switching Test

This section focuses on Layer 2 networking principles including MAC address learning, VLANs, trunking, Spanning Tree Protocol (STP), and EtherChannel. Proficiency in switching concepts is vital for segmenting traffic, preventing loops, and ensuring stable local network performance. Since switches form the backbone of enterprise LANs, a deep understanding of switching behavior and port-based forwarding logic ensures smooth data flow, scalability, and fault tolerance in large environments.

This skill evaluates knowledge of securing Layer 2/3 infrastructure through tools like ACLs, port security, storm control, BPDU guard, and device hardening practices. Network engineers must ensure that routing and switching environments are safeguarded from unauthorized access, spoofing, broadcast storms, and DoS attacks. Mastery of these security measures ensures that network services remain trustworthy, available, and protected against both internal misconfigurations and external threats.

This area includes interior and exterior gateway protocols such as OSPF, EIGRP, RIP, and BGP. It assesses the candidate’s understanding of how routers exchange information, calculate best paths, and handle convergence and redundancy. Routing protocols are the intelligence behind inter-network communication, allowing dynamic adaptation to topology changes. Competency here is crucial for network engineers working in enterprise and service provider environments requiring high availability and route optimization.

This skill focuses on CLI commands, configuration file management, device modes (user, privileged, global config), and firmware upgrades. It is essential for engineers to confidently configure and manage Cisco routers and switches, both initially and throughout operational changes. It also includes backup and restore procedures to maintain business continuity. Strong hands-on CLI knowledge ensures accurate implementation, diagnostics, and rollback capabilities.

This section covers physical and data link layer technologies including Ethernet, fiber, PPP, MPLS, DSL, T1, and broadband access. Understanding these technologies enables engineers to deploy and troubleshoot both local (LAN) and wide area (WAN) connectivity solutions. This knowledge is key in hybrid network environments that bridge campus, branch, and remote sites. Proficiency ensures robust site-to-site links and scalable edge connectivity.

This skill includes DHCP, NAT, PAT, NTP, Syslog, NetFlow, HSRP, VRRP, and QoS. These services support address allocation, failover, traffic control, and monitoring — all of which are critical in enterprise environments. Engineers must configure and validate these services to ensure optimal traffic delivery, uptime, and accountability. Mastery here supports performance tuning, redundancy, and centralized visibility into network operations.

This area focuses on structured network planning including hierarchical models (core, distribution, access), redundancy, modular design, and segmentation. Effective design ensures scalability, ease of management, fault tolerance, and performance optimization. Engineers are expected to make architecture decisions that align with business needs and minimize risk. Understanding network design principles supports both greenfield deployment and brownfield enhancements.

This skill assesses familiarity with Software Defined Networking (SDN), Cisco’s Digital Network Architecture (DNA), automation, and controller-based management. SDN and DNA simplify configuration, policy deployment, and monitoring through centralized platforms. Engineers must understand TrustSec, software overlays, and zero-touch provisioning to operate in modern programmable networks. This is crucial for organizations transitioning to agile, policy-based, and intent-driven infrastructures.

This area covers use of diagnostic tools like ping, traceroute, show and debug commands, as well as monitoring with NetFlow, SPAN, and Syslog. Troubleshooting is a critical skill for resolving outages, performance drops, and configuration errors. Engineers must analyze symptoms, isolate root causes, and apply appropriate fixes quickly. Strong troubleshooting skills ensure network stability and reduce mean time to recovery (MTTR).

This skill covers IPv6 addressing, header structure, dual-stack deployment, tunneling (e.g., 6to4, ISATAP), and IPv6-enabled routing protocols like OSPFv3 and EIGRP for IPv6. As IPv4 address space depletes, organizations must migrate to IPv6. Engineers must be proficient in handling transition mechanisms, ensuring interoperability, and securing IPv6 traffic. This is vital for future-proofing network infrastructure.

This optional but valuable area explores wireless LAN integration with switching environments, including PoE, SSID-to-VLAN mapping, CAPWAP, and roaming. With the rise in wireless-first workplaces, engineers must understand how switches provide power, connectivity, and segmentation for access points. This skill bridges traditional wired networking with mobile enterprise needs, enabling seamless and secure user access.

This skill focuses on recognizing Cisco product lines (e.g., Catalyst 2960/9300, ISR/ASR), licensing models (e.g., Smart Licensing), and hardware configuration. Engineers must know hardware capabilities, module compatibility, and upgrade paths. Awareness of physical platforms is essential for planning deployments, ordering correct gear, and managing lifecycles. It also aids in efficient troubleshooting and inventory tracking.