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

  • Exam Code: 100-490
  • Exam Name: Supporting Cisco Routing and Switching Network Devices
  • Updated: Jun 04, 2026
  • Q & A: 74 Questions and Answers

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Cisco 100-490 Exam Topics:

SectionWeightObjectives
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
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)
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)
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

Cisco 100-490 Exam Certification Details:

Recommended TrainingSupporting Cisco Routing and Switching Network Devices (RSTECH) v3.0
Passing ScoreVariable (750-850 / 1000 Approx.)
Exam RegistrationPEARSON VUE
Number of Questions55-65
Exam Code100-490 RSTECH
Duration90 minutes
Sample QuestionsCisco 100-490 Sample Questions
Exam Price$125 USD
Exam NameSupporting Cisco Routing and Switching Network Devices

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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.

Recommended Training for 100-490 Exam

Cisco dedicates an e-Learning course known as ‘CCT Supporting Cisco R&S Network Devices’ to 100-490 validation. The intention of this device-specific course is captured in how the exam subject matter is looked at intensively. The duration is similar to a classroom session running for 6-7 hours. Individuals who should go ahead and enroll for such training are field engineers, and more so those concerned with third-party maintenance of Cisco networks and products. The training is vital in building learners to enhance their competency in the basics of networking, the configuration of remote servers, and basic troubleshooting of Layer 1 as well as Layer 2. Also, the subject of recognizing endpoints for connection is included in this course. Other than the indicated areas, a candidate who passes through the entire content during training will be positioned for the management of Cisco gadgets as well as connected systems and passing the official 100-490 exam. So, this should be the actual instance after the accomplishment of such a course:

  • Competence in working on basic troubleshooting for Layer 1 and Layer 2.
  • Knowledge of recognizing connection types as well as cable requirement;
  • Awareness concerning network fundamentals, products for Cisco, and hardware elements;
  • Abilities in the usage of the software configuration as well as tools for Cisco such as Tera Term, TFTP server, Putty, FTP server, loopback plug, USB storage, and Windows;
  • Capabilities regarding the performing of remedial services on products for Cisco that include software in addition to configuration backup as well as restore, upgrade/downgrade for software;

In all, this self-paced 100-490 exam course is obtainable from Cisco Learning Network Store and after purchase, you will have up to six months of access.

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

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