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100-490 Pack
Vendor: Cisco
Exam Code: 100-490
Exam Name: Supporting Cisco Routing & Switching Network Devices
Exam Questions: 72
Last Updated: July 26, 2026
Related Certifications:
Exam Tags: Entry Field Engineers
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Free Cisco 100-490 Exam Actual Questions

Question No. 1

What are two components of a WAN connection? (Choose two.)

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Correct Answer: A, B

A Wide Area Network (WAN) connection typically involves several components that work together to enable data communication over large distances. Two key components of a WAN connection are:

CSU/DSU (Channel Service Unit/Data Service Unit): This device acts as a gateway between the local area network (LAN) and the WAN.It converts the digital signals used in the LAN to the signals used in the WAN, which are often analog12.

Router: A router is used to connect multiple networks together and direct data traffic.In the context of a WAN, routers are responsible for determining the best path for data to travel across the network12.


Question No. 2

Which address facilitates the routing of packets over an IP network?

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Correct Answer: C

The address that facilitates the routing of packets over an IP network is the network address. In the context of IP networking, this refers to the IP address, which is used to identify each host on a network and to determine the best path for data packets to travel from their source to their destination. Routers use IP addresses to make decisions about where to forward packets so that they reach the correct destination. The network layer of the OSI model, where IP operates, is responsible for this routing process123.

The other options listed do not facilitate routing in the same way:

Physical (A) and MAC (D) addresses are used at the data link layer to deliver packets on the same local network.

Transport (B) refers to the transport layer, which is responsible for end-to-end communication and data flow control but does not route packets over an IP network.


Question No. 3

Which two Cisco Nexus 3400 Series switches support 400-Gbps Ethernet ports? (Choose two.)

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Correct Answer: C, D

The Cisco Nexus 3432D-S and Cisco Nexus 3408-S are part of the Cisco Nexus 3400 Series switches that support 400-Gbps Ethernet ports. The Cisco Nexus 3432D-S is designed with 32 ports of 400G, providing high-density and high-throughput capabilities1. The Cisco Nexus 3408-S offers flexibility with 100G or 400G Line-Card Expansion Modules (LEMs), allowing for configurations with 32 ports of 400G2. These switches are engineered for data centers requiring high performance, low latency, and power efficiency, with the Cisco Nexus 3432D-S offering industry-leading performance-per-watt power efficiency at low latency1.


Question No. 4

Which type of custom scripting has Cisco NX-OS added to help manage user networks?

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Correct Answer: D

Cisco NX-OS has added support for Python scripting to help manage user networks. Python is a powerful and versatile scripting language that is widely used for automation tasks, including network management. Cisco NX-OS leverages Python to enable network administrators to write custom scripts and programs that can interact with the network operating system, automate repetitive tasks, and integrate with other systems and APIs. This support for Python scripting is part of Cisco's commitment to network programmability and automation, allowing for more efficient and flexible network operations12.


Question No. 5

What is the Windows-based program that executes the ping command to test network connectivity?

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Correct Answer: A

The cmd program, also known as the Command Prompt, is the primary command-line interface in Windows. It allows you to execute various commands, including the ping command, to perform network testing and troubleshooting.

Here's how to use ping in the Command Prompt:

Open the Command Prompt: Search for 'cmd' in the Windows Start Menu or use the Run dialog (Windows key + R) and type 'cmd'.

Type the ping command: Enter ping followed by a space and then either the IP address or hostname you want to test. For instance: ping 8.8.8.8 or ping www.google.com.

Press Enter: The Command Prompt will send ping requests and display the results.

Why other options are incorrect:

Find: The Find utility in Windows is used to search for files and folders based on their content or attributes.

Start: The Start Menu in Windows provides access to programs, settings, and power options.

ipconfig: The ipconfig command is used to display network configuration information but doesn't directly execute the ping command.


Windows Command Prompt (cmd): https://en.wikipedia.org/wiki/Cmd.exe

Ping command: https://en.wikipedia.org/wiki/Ping_(networking_utility)

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