Cisco 100-490 : Supporting Cisco Routing and Switching Network Devices

  • Exam Code: 100-490
  • Exam Name: Supporting Cisco Routing and Switching Network Devices
  • Updated: Aug 01, 2026
  • Q & A: 74 Questions and Answers

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About Cisco 100-490 Exam Cram

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The CCT/CCNA R&S All-in-One Preparation Guide purposes to build candidates with abilities for the Cisco 100-490 exam. Authored by Richard Deal and Glen E. Clarke, the book emphasizes availing information that brings about complete confidence to its readers. The concise content that it carries is highly efficient as it clarifies the subjects concerning the official test. Also to find are practical questions that reflect the exam tone, its format, as well as content. Beyond just getting candidates ready for 100-490 test, it is also a great option when you move to the CCNA stage as it covers the dictates of the exam at that point as well. Such a study guide also presents you with the possibility of using it as a resource for reference as you undertake your job tasks. Still, there is more to the book, which includes:

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To recap, the Cisco 100-490 exam revision guide seizes all the topics linked to it, while ensuring the subject is explored to the fullest. Thus, it serves as a valuable self-study resource.

The second preparation guide that can assist in understanding networking fundamentals is the Cisco Networking All-in-One Guide for Dummies by Edward Tetz. This book is mostly great for learners who find it challenging to absorb subject matters about routers, switches, as well as networking in general. Therefore, the manual goes into presenting the facts in a simpler way. It converts complex subjects into a way that is manageable. Plus, it covers best practices for the utilization of Cisco routers in addition to switches so that there is execution, securing, managing, and optimizing of networks. Finally, there is a review of products and solutions for Cisco as well as how to develop and execute Cisco networks in the guidebook.

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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.

More about 100-490 Exam

The potential of the technicians working on the tasks connected to 100-490 exam assists in picking out models for Cisco switches and routers, accessories, interfaces, and cabling. Their knowledge as well is in the matters of software operation modes for Cisco IOS and the identification of commonly reachable software. Other skills that these technicians should portray are about Cisco CLI for connecting and servicing products.

Nowadays, there are a lot of IT professionals who desire to validate their competence in various subject areas, and Cisco offers the certification program that can help them with this. Thus, those individuals who want to evaluate the skills required for the onsite support and maintenance of the Cisco operating environments, routers, and switches can pass the Cisco 100-490 exam. This test allows you to obtain the Cisco Certified Technician (CCT) Routing and Switching certificate, which shows that you have an understanding of software operating modes of Cisco IOS and are knowledgeable enough to use the CLI.

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

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Cisco 100-490 Exam Syllabus Topics:
SectionWeightObjectives
Cisco IOS Software Operation29%- Cisco IOS Fundamentals
  • 1. Boot sequence process
  • 2. Startup and configuration files
  • 3. Cisco IOS software types
- Configuration Management
  • 1. Restore configurations
  • 2. Backup configurations
  • 3. IOS XE operational modes
- Basic IOS Commands
  • 1. Navigation commands
  • 2. Configuration commands
  • 3. Verification commands
- Device Access
  • 1. Remote access methods
  • 2. Terminal emulation
  • 3. Console access
Cisco Equipment and Related Hardware20%- Cisco Device Identification
  • 1. Device components
  • 2. Cisco switch models
  • 3. Cisco router models
- Memory and Storage
  • 1. Flash memory usage
  • 2. NVRAM functions
  • 3. RAM functions
- Hardware Components
  • 1. Power supplies
  • 2. Ports and interfaces
  • 3. Cabling requirements
- Hardware Replacement
  • 1. Field-replaceable units
  • 2. Device installation and replacement procedures
General Networking Knowledge25%- Network Utilities
  • 1. Ping and traceroute
  • 2. IP configuration tools
  • 3. Basic connectivity verification
- Networking Fundamentals
  • 1. OSI and TCP/IP models
  • 2. Network addressing concepts
  • 3. Layer 1 and Layer 2 technologies
  • 4. Basic networking hardware
- Network Responsibilities
  • 1. Roles of routers and switches
  • 2. Network support responsibilities
Service-related Knowledge26%- Troubleshooting
  • 1. Connectivity issue diagnosis
  • 2. Basic Layer 1 troubleshooting
  • 3. Basic Layer 2 troubleshooting
- Recovery Operations
  • 1. Factory reset procedures
  • 2. Configuration recovery
  • 3. Password recovery
- Support Tools
  • 1. Maintenance best practices
  • 2. Diagnostic utilities
  • 3. Windows troubleshooting tools
- Software Maintenance
  • 1. Cisco IOS upgrades
  • 2. Software recovery procedures
  • 3. Image management

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