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100+ Free 100-490 RSTECH Practice Questions

Pass your Supporting Cisco Routing & Switching Network Devices (RSTECH 100-490) exam on the first try — instant access, no signup required.

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2026 Statistics

Key Facts: 100-490 RSTECH Exam

60-70

Exam Questions

Cisco

90 min

Exam Duration

Cisco

$125

Exam Fee

Pearson VUE

3 years

Certification Validity

Cisco

27%

Largest Domain (tie)

Equipment + IOS Software

0

Prerequisites

None required

The 100-490 RSTECH exam has 60-70 questions in 90 minutes with a scaled passing score. Key domains: Cisco Equipment and Hardware (27%), Cisco IOS Software (27%), General Networking (23%), and Service-Related Knowledge (23%). Exam fee is $125. Valid 3 years. Leads to the CCT Routing & Switching certification.

Sample 100-490 RSTECH Practice Questions

Try these sample questions to test your 100-490 RSTECH exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the purpose of the Cisco IOS command 'show version'?
A.Display the routing table
B.Display IOS version, uptime, hardware platform, and memory information
C.Show interface statistics
D.List all connected neighbors
Explanation: 'show version' displays the IOS software version, router uptime, hardware platform, memory, flash size, and the configuration register setting.
2Which physical connection method is used to access a Cisco device's console port for initial configuration?
A.Ethernet RJ-45 cable to a switch
B.Rollover (console) cable with a DB-9 or USB adapter to a PC COM port
C.Fiber optic cable
D.Wireless Bluetooth connection
Explanation: A rollover cable (also called a console cable) connects the RJ-45 console port of a Cisco device to a PC's serial (DB-9) or USB port, providing direct out-of-band management access.
3What is the default baud rate for Cisco device console connections?
A.4800 bps
B.9600 bps
C.19200 bps
D.115200 bps
Explanation: The default console port baud rate on Cisco devices is 9600 bps with 8 data bits, no parity, 1 stop bit, and no flow control (9600 8N1).
4Which Cisco IOS privilege level provides full access to all commands including configuration?
A.User EXEC mode (level 1)
B.Privileged EXEC mode (level 15)
C.Line configuration mode
D.Interface configuration mode
Explanation: Privileged EXEC mode (accessed with the 'enable' command) operates at privilege level 15, providing full access to all show commands, debug commands, and entry to global configuration mode.
5What Cisco IOS command is used to enter global configuration mode from privileged EXEC mode?
A.enable
B.configure terminal
C.interface FastEthernet 0/0
D.copy running-config startup-config
Explanation: The 'configure terminal' (abbreviated 'conf t') command entered from privileged EXEC mode transitions the CLI to global configuration mode where system-wide settings can be changed.
6Which LED color on a Cisco switch port typically indicates a link is active and passing traffic at normal operation?
A.Off (no LED)
B.Amber/orange
C.Green
D.Blue
Explanation: A solid green LED on a Cisco switch port indicates a valid link is established and the port is active. Blinking green typically indicates traffic is passing.
7What does a solid amber/orange LED on a Cisco switch port typically indicate?
A.Port is active and passing traffic
B.Port is in STP blocking state or error-disabled
C.Port speed is 100 Mbps
D.Port is administratively shutdown globally
Explanation: A solid amber LED on a Cisco switch port typically indicates the port is in Spanning Tree Protocol (STP) blocking state, error-disabled state, or a POST failure on that port.
8What is the purpose of the Cisco IOS 'show ip interface brief' command?
A.Display detailed IP routing table
B.Show a summary of all interfaces with IP addresses, status, and line protocol
C.Display ARP table
D.Show BGP neighbors
Explanation: 'show ip interface brief' displays a one-line summary for each interface showing the IP address, interface status (up/down), and line protocol state.
9Which Cisco hardware component stores the IOS image and is used during the boot process?
A.RAM
B.NVRAM
C.Flash memory
D.ROM
Explanation: Flash memory stores the Cisco IOS software image. The router loads the IOS from flash during boot. Flash retains its contents when power is removed.
10What is the function of NVRAM in a Cisco router?
A.Store the IOS software image
B.Store the startup configuration file (startup-config)
C.Provide working memory for routing tables
D.Store the POST routines
Explanation: NVRAM (Non-Volatile RAM) stores the startup-config file. Because it is non-volatile, the saved configuration persists through power cycles and reloads.

About the 100-490 RSTECH Exam

The 100-490 RSTECH exam validates the skills of on-site support technicians who install, maintain, and perform basic troubleshooting of Cisco routing and switching network devices. It covers general networking fundamentals, Cisco hardware identification across the product portfolio, Cisco IOS software operation (including IOS-XE, IOS-XR, and NX-OS), and service-related field tasks such as console connections, software upgrades, and password recovery.

Questions

65 scored questions

Time Limit

90 minutes

Passing Score

~750-850/1000 (scaled)

Exam Fee

$125 (Pearson VUE)

100-490 RSTECH Exam Content Outline

23%

General Networking Knowledge

OSI model layers and functions, TCP/IP model, LAN switches and routers, wireless access points, Layer 2 technologies (VLANs, STP), IPv4 and IPv6 addressing and subnetting, network protocols (FTP, TFTP, ping, Telnet, SSH), and physical cabling types (copper, fiber, rollover)

27%

Cisco Equipment and Related Hardware

Interface identification on Cisco Catalyst and Nexus switches, ASR, NCS, and ISR routers, Meraki devices; product identification by logo, model number, and appearance; serial number location; memory and hardware component terminology; installation tools and loopback adapters

27%

Cisco IOS Software Operation

IOS, IOS-XE, IOS-XR, and NX-OS operating modes; navigating user EXEC, privileged EXEC, and global configuration modes; show commands; managing startup-config and running-config; configuration register values; Cisco licensing; Bundle Mode vs. Install Mode on IOS-XE

23%

Service-Related Knowledge

Using terminal emulation software (PuTTY, SecureCRT) for console connections; Windows command-line tools; TFTP and FTP server setup for image transfers; software upgrade procedures; password recovery workflows; Layer 1 and Layer 2 troubleshooting methodology

How to Pass the 100-490 RSTECH Exam

What You Need to Know

  • Passing score: ~750-850/1000 (scaled)
  • Exam length: 65 questions
  • Time limit: 90 minutes
  • Exam fee: $125

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

100-490 RSTECH Study Tips from Top Performers

1Know Cisco equipment by sight — practice identifying ASR, ISR, NCS, Catalyst, Nexus, and Meraki products by their model numbers and physical appearance
2Master the four Cisco OS families: IOS, IOS-XE, IOS-XR, NX-OS — know which platforms run which OS
3Practice navigating IOS command modes: user EXEC (>), privileged EXEC (#), and global configuration (config#) — and the commands to move between them
4Know the most common show commands: show version, show interfaces, show running-config, show startup-config, show ip interface brief
5Understand the rollover cable (console cable) — know the pin-out, when to use it, and how to set up a terminal emulation session
6Study password recovery procedures for both routers and switches — this is a practical field skill that appears on the exam
7Review the OSI model layers and know which protocols operate at each layer — Layer 1-2 troubleshooting is a recurring topic

Frequently Asked Questions

What is the Cisco 100-490 RSTECH exam?

The 100-490 RSTECH (Supporting Cisco Routing & Switching Network Devices) is a 90-minute entry-level exam that leads to the Cisco Certified Technician (CCT) Routing & Switching certification. It validates field technician skills for installing, maintaining, and basic troubleshooting of Cisco routing and switching devices.

How much does the 100-490 RSTECH exam cost?

The 100-490 RSTECH exam costs $125 USD and is administered by Pearson VUE at test centers worldwide and via online proctored testing. The fee is required for each attempt.

What are the prerequisites for the 100-490 RSTECH exam?

There are no prerequisites to sit the 100-490 RSTECH exam. It is designed as an entry-level certification for technicians with no prior Cisco experience. Cisco recommends completing the RSTECH authorized training course, but it is not required.

What is the difference between CCT and CCNA?

The CCT (100-490) is a field technician credential focused on hardware identification, basic IOS operation, and on-site support tasks. CCNA (200-301) is a broader network associate credential covering routing protocols, security, automation, and design. Many candidates use the CCT as a stepping stone toward CCNA.

What Cisco IOS versions are covered on the 100-490 exam?

The 100-490 exam covers all four major Cisco operating systems: IOS (classic), IOS-XE (enterprise routing/switching), IOS-XR (carrier-grade routers like NCS/ASR 9000), and NX-OS (Nexus data center switches). You need to know operating modes and basic command navigation for each.

How long is the CCT Routing & Switching certification valid?

The CCT Routing & Switching certification is valid for 3 years from the date of passing. You can renew by passing any current Cisco exam at associate level or higher, or by earning Continuing Education credits through Cisco's recertification program.