Try and practice the latest Cisco : 100-490 real questions & answers

Last Updated: Oct 13, 2026

No. of Questions: 74 Questions & Answers with Testing Engine

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Cisco 100-490 Practice Q&A's

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Some candidates read on a tablet; others prefer drilling in a simulator. Actual4Cert's Cisco Supporting Cisco Routing and Switching Network Devices package comes as a printable PDF, a Windows desktop test engine, and a browser-based online engine, so the 74 practice questions for the 100-490 exam fit the way you actually study.

Cisco 100-490 Exam Overview:

Certification Vendor:Cisco
Exam Name:Supporting Cisco Routing and Switching Network Devices (RSTECH)
Exam Number:100-490
Exam Format:Multiple choice, Simulation-based questions, Multiple response
Certificate Validity Period:3 years
Available Languages:English
Related Certifications:Cisco Certified Support Technician (Cybersecurity)
Cisco Certified Support Technician (Networking)
Exam Duration:50 minutes
Recommended Training:Cisco Networking Basics Learning Path
Exam Registration:Cisco Certification Registration
Pearson VUE Cisco Exams
Sample Questions: DOWNLOAD DEMO
Exam Way:Online proctored or Pearson VUE test center
Pre Condition:No formal prerequisites required, basic networking knowledge recommended
Official Syllabus URL:https://www.cisco.com/c/en/us/training-events/training-certifications/certifications/entry.html

Cisco 100-490 Exam Syllabus Topics:

SectionObjectives
Topic 1: Switching Fundamentals- VLAN concepts and configuration
- Trunking and STP basics
Topic 2: Network Fundamentals- IP addressing and subnetting basics
- Common networking protocols
- OSI and TCP/IP models
Topic 3: Network Troubleshooting- Layer 1–3 diagnostics tools
- Connectivity troubleshooting
Topic 4: Routing Fundamentals- Basic routing concepts
- Static routing
Topic 5: Cisco IOS Operations- Device configuration and verification
- Basic CLI navigation

Answers to the Most Common Questions About Cisco Supporting Cisco Routing and Switching Network Devices

The 100-490 exam is the official Cisco exam for Cisco Supporting Cisco Routing and Switching Network Devices. Passing it earns you the Cisco Certified Support Technician (Networking) credential, which sits at the Entry / Associate level. It is also connected to Cisco Certified Support Technician (Networking), Cisco Certified Support Technician (Cybersecurity), so what you learn carries over if you plan to pursue those paths as well. Employers treat the certification as verified proof of skill, which is why structured preparation with Actual4Cert's practice questions pays off.

No formal prerequisites required, basic networking knowledge recommended Eligibility details can change, so before you register, confirm the current requirements on the official exam page: https://www.cisco.com/c/en/us/training-events/training-certifications/certifications/entry.html.

You can book the 100-490 exam through the official registration channels below:

Exam delivery method: Online proctored or Pearson VUE test center.

Cisco points candidates to the following official training options:

Once the coursework has built your foundation, the fastest way to turn theory into exam readiness is drilling with Actual4Cert's 74 practice questions for the Cisco Supporting Cisco Routing and Switching Network Devices exam.

Yes. Actual4Cert offers a free PDF demo of the Cisco Supporting Cisco Routing and Switching Network Devices practice questions on the samples page, so you can judge the format and quality yourself before paying anything. Every purchase also includes 365 days of free updates, and after the product expires you can extend the update service at a 50% discount from within your member zone.

If you take the corresponding exam within 60 days of purchase and do not pass, Actual4Cert backs you with a 100% money-back guarantee. To claim it, submit a scanned copy of your exam enrollment slip together with your official Score Report PDF within 2 days of the exam, and the refund is processed within 7 days. The guarantee does not apply to attempts made within the first 3 days after purchase, to products downloaded without actually sitting the exam, or to free materials and expired orders, and the candidate name must match the payer's name. If you would rather have study material than money, you can instead exchange for two additional exam products of equal value, free of charge, while keeping the update service on your original purchase. Delivery itself is instant: your download is available right after payment and a copy reaches your mailbox within one minute — if nothing arrives within 2 hours, contact customer service. You may install the product on as many computers as you need.

The official Cisco Supporting Cisco Routing and Switching Network Devices blueprint is organized into 5 domains. The leading areas are:

  • Network Troubleshooting
  • Switching Fundamentals
  • Cisco IOS Operations

For the complete domain-by-domain breakdown with every subtopic, see the Exam Topics outline above.

Cisco Supporting Cisco Routing and Switching Network Devices Sample Questions:

Question #1

Which two IPv4 addresses are assigned to host computers? (Choose two.)

  • A. 10.1.1.20
  • B. 192.168.10.15
  • C. 0.0.0.0
  • D. 292.10.3.4
  • E. 255.255.255.255
Reveal Solution  Discussion  0

Correct Answer: A,B  🗳️

Explanation: Only visible for Actual4Cert members. You can sign-up / login (it's free).

Question #2

Which type of transceiver module is used for 40 Gigabit Ethernet connectivity?

  • A. SFP+
  • B. QSFP+
  • C. GBIC
  • D. XFP
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Explanation: Only visible for Actual4Cert members. You can sign-up / login (it's free).

Question #3

Which device is a DTE device?

  • A. CSU/DSU
  • B. DSL modem
  • C. router
  • D. cable modem
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Explanation: Only visible for Actual4Cert members. You can sign-up / login (it's free).

Question #4

What is the default operating mode when you initially log in to a router?

  • A. user EXEC
  • B. ROM monitor
  • C. global configuration
  • D. privileged EXEC
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Explanation: Only visible for Actual4Cert members. You can sign-up / login (it's free).

Question #5

From a Windows command prompt, which command displays the local IP address of a computer?

  • A. ipconfig
  • B. ip config
  • C. ipconfiguration
  • D. ip configuration
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Explanation: Only visible for Actual4Cert members. You can sign-up / login (it's free).

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