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  • 100-490 (Supporting Cisco Routing and Switching Network Devices)
Exam Code: 100-490
Exam Name: Supporting Cisco Routing and Switching Network Devices
Certification Provider: Cisco
Corresponding Certification: CCT Routing and Switching

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100-490

Last Updated: Aug 09, 2026

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100-490 Product FAQ's

About 100-490 Exam

This exam will test your ability according to the skills needed for onsite support of Cisco routers, operating environments, and switches. Particularly, the CCT Routing and Switching certification is for those who plan to or are currently supporting Cisco devices, usually with the help of some upper-engineering support that can be received from the third-party maintainer field engineers. You should also go for this certification exam if you have technical experience and want to move into the field of networking. There are no specific prerequisites to take the official test, but you do need to learn the topics that will be covered in the final test.

Know about Cisco 100-490 Exam topics

Candidates must know the exam topics before they start of preparation. Because it will really help them in hitting the core. Our Cisco 100-490 exam dumps will include the following topics:

  • Cisco IOS Software Operation (29%)
  • General Networking Knowledge (25%)
  • Service Related Knowledge (26%)
  • Cisco Equipment and Related Hardware (20%)

Reference: https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/100-490-rstech.html

Prerequisites

To be eligible for this certification exam, the potential candidates are required to possess an understanding of Cisco switch & router interfaces, models, cabling, as well as accessories. Please note that there are no official prerequisites for Cisco 100-490 and you don’t need to earn a certificate or have a technical background. However, the applicants should know all the topics and the content before taking the test.

Cisco 100-490 Exam Syllabus Topics:

SectionWeightObjectives
Cisco Equipment and Related Hardware20%- Hardware Components
  • 1. Power supplies
  • 2. Cabling requirements
  • 3. Ports and interfaces
- Memory and Storage
  • 1. Flash memory usage
  • 2. RAM functions
  • 3. NVRAM functions
- Hardware Replacement
  • 1. Device installation and replacement procedures
  • 2. Field-replaceable units
- Cisco Device Identification
  • 1. Cisco switch models
  • 2. Device components
  • 3. Cisco router models
General Networking Knowledge25%- Network Responsibilities
  • 1. Roles of routers and switches
  • 2. Network support responsibilities
- Networking Fundamentals
  • 1. OSI and TCP/IP models
  • 2. Layer 1 and Layer 2 technologies
  • 3. Basic networking hardware
  • 4. Network addressing concepts
- Network Utilities
  • 1. Basic connectivity verification
  • 2. Ping and traceroute
  • 3. IP configuration tools
Cisco IOS Software Operation29%- Cisco IOS Fundamentals
  • 1. Cisco IOS software types
  • 2. Boot sequence process
  • 3. Startup and configuration files
- Basic IOS Commands
  • 1. Configuration commands
  • 2. Verification commands
  • 3. Navigation commands
- Configuration Management
  • 1. Restore configurations
  • 2. IOS XE operational modes
  • 3. Backup configurations
- Device Access
  • 1. Terminal emulation
  • 2. Console access
  • 3. Remote access methods
Service-related Knowledge26%- Support Tools
  • 1. Diagnostic utilities
  • 2. Maintenance best practices
  • 3. Windows troubleshooting tools
- Recovery Operations
  • 1. Password recovery
  • 2. Factory reset procedures
  • 3. Configuration recovery
- Software Maintenance
  • 1. Cisco IOS upgrades
  • 2. Software recovery procedures
  • 3. Image management
- Troubleshooting
  • 1. Basic Layer 2 troubleshooting
  • 2. Basic Layer 1 troubleshooting
  • 3. Connectivity issue diagnosis

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