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Free PDF 2025 Authoritative 100-490: Testking Supporting Cisco Routing and Switching Network Devices Exam Questions

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Cisco 100-490 certification is an excellent opportunity for individuals who want to advance their career in the networking industry. Supporting Cisco Routing and Switching Network Devices certification will help individuals to expand their skill set, and it will also help them to demonstrate their expertise in supporting Cisco routing and switching network devices. Supporting Cisco Routing and Switching Network Devices certification will help individuals to gain credibility, and it will also help them to increase their earning potential.

Earning the Cisco 100-490 Certification demonstrates to employers that a professional has the skills and knowledge necessary to support Cisco routing and switching devices in a variety of environments. It is an excellent way for IT professionals to showcase their expertise and advance their careers in the field of network administration and support.

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The Cisco 100-490 exam consists of multiple-choice questions and simulations, and candidates are given 90 minutes to complete it. The passing score is 750 out of 1000. 100-490 Exam is available in English and Japanese and can be taken at any Pearson VUE testing center worldwide.

Cisco Supporting Cisco Routing and Switching Network Devices Sample Questions (Q24-Q29):

NEW QUESTION # 24
Which protocol does TFTP typically use for transport?

A. UDP
B. TCP
C. HTTP
D. RSVP

Answer: A

Explanation:
TFTP, or Trivial File Transfer Protocol, is a simple protocol used for transferring files. Unlike other file transfer protocols, TFTP operates on top of the User Datagram Protocol (UDP), which is a connectionless protocol. This means that TFTP does not establish a persistent connection between the client and server, and it does not guarantee reliable delivery of packets, error checking, or correction. TFTP is typically used in scenarios where simplicity and minimal memory footprint are more critical than the need for reliable delivery, such as when booting a device over a network123. Reference := Wikipedia, GeeksforGeeks, PyNet Labs

NEW QUESTION # 25
What are two descriptions for FTP? (Choose two.)

A. A Cisco router must be configured with the appropriate username and password because FTP usually requires authentication.
B. FTP loads Cisco IOS Software to a router in ROMMON mode.
C. The copy running-config ftp: command copies a configuration file from an FTP server to the running configuration.
D. FTP uses UDP as its transport protocol.
E. A router is able to act as an FTP server.

Answer: A,C

Explanation:
1. It is built on a client-server model architecture and uses separate control and data connections between the client and the server2. Here are the explanations for the correct answers:
* B: The copy running-config ftp: command is used to copy the running configuration from a router to an FTP server or vice versa. This is a common method for backing up and restoring configurations on Cisco devices1.
* E: FTP typically requires authentication, which means a Cisco router acting as an FTP client must be configured with the appropriate username and password to access an FTP server. This ensures secure file transfer and access control1.
The other options are incorrect because:
* A: FTP is not used to load Cisco IOS Software to a router in ROMMON mode; this is typically done using TFTP or Xmodem.
* C: While a router can act as an FTP server, this is not a description of FTP itself.
* D: FTP uses TCP as its transport protocol, not UDP. FTP needs the reliability that TCP provides because it ensures the complete and accurate transfer of files1.

NEW QUESTION # 26
Which command sends an echo request packet to the target host and then waits for an echo response message?

A. ping
B. access
C. echo
D. connect

Answer: A

Explanation:
Section: Cisco IOS Software Operation

NEW QUESTION # 27
TFTP is a simple protocol for transferring files, such as a Cisco IOS or configuration file, from one device to another. Which device can be configured as a TFTP server?

A. modem
B. Cisco router
C. Cisco Content Engine
D. CSU/DSU

Answer: B

Explanation:
Section: Service-related Knowledge

NEW QUESTION # 28
Which two pairs of LAN Ethernet devices use an RJ-45 straight-through cable? (Choose two.)

A. router-to-router
B. switch-to-server
C. switch-to-hub
D. switch-to-switch
E. switch-to-router

Answer: B,E

Explanation:
Questions no : 12 Verified answer: = B. switch-to-router, E. switch-to-server Switch-to-Router: A switch connects devices within a network by using MAC addresses to forward data to the correct destination. A router, on the other hand, connects multiple networks and uses IP addresses to determine the best path for the data packets. Connecting a switch to a router requires a straight-through cable because they are different types of devices12.
Switch-to-Server: Servers are the powerful computers that provide resources, data, services, or programs to the client machines in the network. When connecting a switch to a server, a straight-through cable is used because the switch and the server are different types of devices with different functions within the network12.

NEW QUESTION # 29
......

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