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

  • Exam Code: 100-490
  • Exam Name: Supporting Cisco Routing and Switching Network Devices
  • Updated: May 30, 2026
  • Q&As: 74 Questions and Answers

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About Cisco 100-490 Exam braindumps

What Study Guides Can Guarantee Great Exam Preparation?

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:

  • Online exams with several questions for practice which cover 100-490, with explanations that clarify the answers;
  • PDF glossary.
  • Over 4 hours of training through video lectures;
  • PDF carrying 47 lab exercises with comprehensive solutions;

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.

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

Exam Details

The Cisco 100-490 exam consists of 55-65 questions that can be presented in various formats, and the applicants are required to answer them within 90 minutes. This test is available in English and Japanese. So, the students can choose the appropriate variant during the registration process. To register and schedule the exam, you must pay $125 and create an account on Pearson VUE. This platform allows sitting for it as an online test or in person. Please note that it is a closed-book exam, so the learners are not permitted to bring any external materials.

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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.

Cisco 100-490 Exam Topics:

SectionWeightObjectives
Cisco Equipment and Related Hardware20%- Identify the Cisco equipment including the Cisco Nexus 9000 Series, Nexus 7000 Series, Nexus 3000 Series, MDS 9000 Series, Catalyst 9000 Series, Catalyst 6800 Series, Catalyst 6500 E-Series, Catalyst 3850, 3650, 2960, 1000 Series and Meraki switches and Cisco 8000 Series, Cisco ASR 9000 Series, Cisco ASR 1000 Series, NCS 5500 Series ,NCS 5000 Series routers and Cisco 4000, 1100, 900, 800 Series Integrated Service routers.
- Identify Cisco products by logo marking and model number (including, but not limited to, locations on chassis, line card, module, or adapter)
- Identify Cisco Transceiver Modules
- Identify and locate the serial number of Cisco products (including, but not limited to, locations on chassis, line card, module, or adapter)
- Identify and describe commonly used components
- Describe hardware memory common terms and their use in Cisco routers and switches
- Identify the cabling on Cisco equipment
- Identify tools for hardware installation and replacement
- Identify the different loop-back plugs (RJ45 Ethernet, T1, 56K)
Cisco IOS Software Operation29%- Describe the key role of Cisco IOS, IOS-XE, IOS-XR and NX-OS software
- Navigate between different operating modes
- Determine the current mode of a device
- Copy and paste a configuration file from/to a router or switch
- Use and interpret the basic Cisco IOS Software commands
- Describe the location and process to change the configuration register parameter
- Identify a configuration file from a Cisco device
- Describe the licensing process on different platforms
- Describe Bundle Mode/Install Mode IOS-XE
General Networking Knowledge25%- Use the OSI and TCP/IP models and their associated protocols to explain how data flows in a network
- Describe the basic functionality and key differences of this hardware: LAN switch, router, and wireless access points
- Differentiate between these Layer 2 technologies: Ethernet, Fast Ethernet, Gigabit Ethernet, Serial, and Optical
- Describe LAN cabling
- Describe the function of CSU/DSU
- Describe Telco termination point
- Describe an IPv4 and IPv6 address and subnet
- Describe the function of FTP, TFTP and PING
- Describe the function of Telnet and SSH
Service-Related Knowledge26%- Locate and use a text editor such as, Notepad
- Locate and use the Windows command prompt
- Locate, configure, and use Terminal Emulation ( Tera Term, Putty)
- Configure networks settings for Ethernet port on laptop (IP address, subnet mask and default gateway) and establish a connection with Ethernet ports on Cisco equipment using correct cable
- Make a physical connection from laptop to Cisco console port
- Connect, configure, and verify operation status of a device interface
- Configure and use TFTP and FTP servers (TFTP d32/64, FIlezilla)
- Perform software upgrade or downgrade using TFTP, FTP, xmodem, tftpdnld, or USB Storage
- Manage configurations via the TCP/IP network
- Perform password recovery on a Cisco device
- Identify and correct common network problems at Layers 1 and 2
  • Serial or ether interface status
  • Ethernet layer 2 (full and half duplex, speed issues)
  • WAN serial loopback test (T1, 56K and Telco assisted loopback)

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