Latest Cisco 100-490 PDF and Dumps (2025) Free Exam Questions Answers
Pass Your CCT Routing and Switching 100-490 Exam on Feb 26, 2025 with 74 Questions
Cisco 100-490 exam is a 90-minute, multiple-choice exam that consists of 60-70 questions. 100-490 exam is designed to test the candidate's knowledge and skills in supporting Cisco routing and switching network devices. 100-490 exam can be taken at any Pearson VUE testing center worldwide. Candidates who pass the exam will earn the Cisco Certified Technician Routing and Switching (CCT Routing and Switching) certification, which is valid for three years.
NEW QUESTION # 16
Refer to the exhibit. What are two identifications for the hardware components? (Choose two.)
- A. 1 is a USB Type A port.
- B. 3 is a USB Type A port.
- C. 2 is a USB 5-pin mini USB Type B to USB Type A console cable.
- D. 2 is an RJ-45 to USB Type A console cable.
- E. 3 is a USB 5-pin mini USB Type B port.
Answer: A,D
Explanation:
* The label "1" points to a rectangular port on the laptop. This is consistent with the shape of a USB Type A port.
* The cable labeled "2" has an RJ-45 connector on one end and a USB Type A connector on the other end.
Incorrect Answers:
* C. 2 is a USB 5-pin mini USB Type B to USB Type A console cable: The connector on the cable labeled "2" is not a mini USB Type B connector. It is a standard RJ-45 connector.
* D. 3 is a USB Type A port: The label "3" points to a port on the server that is not visible in the image. Therefore, we cannot identify the type of port it is.
* E. 3 is a USB 5-pin mini USB Type B port: Same as D, we cannot identify the type of port labeled "3" due to lack of visibility in the image.
NEW QUESTION # 17
Which method is the fastest way to recover a software version that supports a USB flash port on a Cisco device?
- A. copy command with USB memory
- B. copy tftp flash: command
- C. tftp command
- D. xmodem transfer command
Answer: A
NEW QUESTION # 18
Which command provides detailed information about the components that are installed on a router, such as the model, PID, and serial number?
- A. show router
- B. show items
- C. show inventory
- D. show chassis
Answer: C
NEW QUESTION # 19
What does Cisco use for Return Materials Authorization tracking of field-replaceable parts?
- A. serial number
- B. product number
- C. FRU number
- D. RMA number
Answer: D
NEW QUESTION # 20
Which two commands set the configuration register value? (Choose two.)
- A. router(config)#config-register 0x2102
- B. router(config)#configuration-register 0x2102
- C. rommon>config-register 0x2102
- D. router(config)#confreg 0x2102
- E. rommon>confreg 0x2102
Answer: A,E
NEW QUESTION # 21
Which device is a DTE device?
- A. DSL modem
- B. router
- C. CSU/DSU
- D. cable modem
Answer: B
NEW QUESTION # 22
What are two standard fiber-optic connectors? (Choose two.)
- A. crossover
- B. rollover
- C. subscriber
- D. multidimension
- E. Lucent
Answer: C,E
Explanation:
Two standard fiber-optic connectors are Lucent Connectors (LC) and Subscriber Connectors (SC). The Lucent Connector, commonly referred to as LC, was developed by Lucent Technologies and is characterized by its small form factor with a 1.25mm ferrule. It is widely used in high-density applications due to its compact size and square shape1. The Subscriber Connector, or SC, is known for its push-pull latching mechanism and uses a 2.5mm ferrule. It is a square-shaped, duplex connector that has been a dominant fiber optic connector for decades due to its performance and reliability12.
NEW QUESTION # 23
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:
Cisco routers can be readily configured to act as TFTP servers, allowing them to provide Cisco IOS images or configuration files to other devices. Here's why this is the correct answer:
Software Support: Cisco IOS includes built-in support for the TFTP protocol, making it easy to set up a TFTP server on a router.
Storage Capacity: Routers typically have flash memory where IOS images and other files can be stored, making them suitable repositories for TFTP transfers.
Network Accessibility: Routers play a central role in networks, making them an accessible location for TFTP file transfers.
Why other options are incorrect:
Cisco Content Engine: Content Engines are specialized network appliances designed for caching and accelerating web content delivery. They typically don't have functionality for acting as generic TFTP servers.
Modem: Modems primarily modulate/demodulate signals to facilitate communication over traditional telephone lines. They lack the software capabilities to run a TFTP server.
CSU/DSU: Channel Service Unit/Data Service Units are devices used to interface with digital leased lines. They don't possess the necessary software to run a TFTP server.
NEW QUESTION # 24
Which set of steps best describes how to assign a static IP address to the Ethernet port on a computer?
- A. From the Network and Sharing Center, double-click Local Area Connection. Select Properties > iPass Protocol (IEEE 802.1x) > Properties > Static IP.
- B. From the Network and Sharing Center, click Internet Protocol (TCP/IP), and follow the New Connection Wizard instructions.
- C. Click Start. Enter cmd and click OK. Enter the IP address XXX.XXX.XXX.XXX.
- D. From the Network and Sharing Center, click Change adapter, then double-click a local area connection. Select Internet Protocol (TCP/IP) > Properties > Use the Following Address, and then configure the IP information.
Answer: D
NEW QUESTION # 25
Which command displays a list of file systems that are available on Cisco devices?
- A. show memory
- B. show version
- C. show file system
- D. show directory
Answer: C
Explanation:
Section: Cisco IOS Software Operation
NEW QUESTION # 26
Cisco NX-OS has added the ability to use which type of custom scripting to help manage user networks?
- A. SQL
- B. Collective
- C. C++
- D. Python
Answer: D
NEW QUESTION # 27
Which Xmodem option is used to enhance error checking of an image that is copied to flash memory?
- A. -x
- B. -r
- C. -e
- D. -c
Answer: D
Explanation:
The -c option in Xmodem file transfers is used to enable CRC (Cyclic Redundancy Check) for enhanced error checking. Here's why it's the correct answer:
Error Detection: CRC is a more robust error detection mechanism compared to the standard checksum method used in Xmodem. It provides greater reliability in identifying file corruption during the transfer.
Flash Memory: Since flash memory on a Cisco router or switch stores critical data like configuration files or the IOS image, ensuring the integrity of transferred files is crucial.
Why other options are incorrect:
-e, -r, -x: These are not standard Xmodem options for error checking purposes. While some implementations may have custom flags, they are not universally applicable.
Important Note: Xmodem is a legacy protocol that is often replaced by more reliable options like TFTP in modern Cisco devices. However, understanding Xmodem options is still relevant for certain cases or older equipment.
Reference:
Xmodem overview: https://en.wikipedia.org/wiki/XMODEM
Cyclic Redundancy Check (CRC): https://en.wikipedia.org/wiki/Cyclic_redundancy_check
NEW QUESTION # 28
The colored wires at one end of a cable are in reverse sequence to the colored wires at the other end of the cable. Which cable does this configuration describe?
- A. straight-through
- B. crossover
- C. coaxial
- D. rolled
Answer: B
Explanation:
Section: Cisco Equipment and Related Hardware
NEW QUESTION # 29
Which device is able to be configured as a TFTP server?
- A. modem
- B. Cisco router
- C. Cisco Content Engine
- D. CSU/DSU
Answer: B
Explanation:
A Cisco router can be configured to act as a TFTP (Trivial File Transfer Protocol) server. TFTP is a simple protocol used to transfer files without the need for authentication. On a Cisco router, the tftp-server command is used to designate the router as a TFTP server, allowing it to manage file transfers to and from connected devices. This is particularly useful for tasks such as updating the router's firmware or backing up configuration files. Neither CSU/DSU, modem, nor Cisco Content Engine are typically used as TFTP servers. Reference := The ability to configure a Cisco router as a TFTP server is documented in Cisco's support forums and knowledge base articles
NEW QUESTION # 30
Which command provides detailed information about the components that are installed on a router, such as the model, PID, and serial number?
- A. show router
- B. show items
- C. show inventory
- D. show chassis
Answer: C
Explanation:
Section: Cisco IOS Software Operation
NEW QUESTION # 31
Which set of steps best describes how to assign a static IP address to the Ethernet port on a computer?
- A. From the Network and Sharing Center, double-click Local Area Connection. Select Properties > iPass Protocol (IEEE 802.1x) > Properties > Static IP.
- B. From the Network and Sharing Center, click Internet Protocol (TCP/IP), and follow the New Connection Wizard instructions.
- C. Click Start. Enter cmd and click OK. Enter the IP address XXX.XXX.XXX.XXX.
- D. From the Network and Sharing Center, click Change adapter, then double-click a local area connection. Select Internet Protocol (TCP/IP) > Properties > Use the Following Address, and then configure the IP information.
Answer: D
Explanation:
To assign a static IP address to the Ethernet port on a computer, particularly in a Windows environment, you would navigate to the Network and Sharing Center. From there, you would access the adapter settings, select your local area connection, and then enter the properties for Internet Protocol Version 4 (TCP/IPv4). Within the properties, you would choose the option to use a specific IP address and enter the desired IP information, including the IP address, subnet mask, and default gateway. This process sets a static IP address for the Ethernet port, ensuring that the computer will always use the same IP address every time it connects to the network, which is useful for various network configurations and applications. Reference := How to Assign a Static IP Address in Windows 10 or Windows 11 - How-To Geek, How to Set Up a Static IP Address | PCMag
NEW QUESTION # 32
Which bits represent the boot field in the configuration register value?
- A. lowest four bits
- B. highest four bits
- C. lowest two bits
- D. highest two bits
Answer: A
NEW QUESTION # 33
Which command displays information about the carrier network, cell site, and available service?
- A. show cellular unit hardware
- B. show cellular unit network
- C. show cellular unit profile
- D. show cellular unit radio
Answer: B
Explanation:
Section: Cisco IOS Software Operation
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/solutions/Verticals/EE/IG-WAN/EE-WAN-IG/EE-WAN- IGch2.html
NEW QUESTION # 34
How many pairs of copper wire does a UTP cable have?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 35
What is the Windows-based program that executes the ping command to test network connectivity?
- A. ipconfig
- B. cmd
- C. Find
- D. Start
Answer: B
Explanation:
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.
Reference:
Windows Command Prompt (cmd): https://en.wikipedia.org/wiki/Cmd.exe
Ping command: https://en.wikipedia.org/wiki/Ping_(networking_utility)
NEW QUESTION # 36
Which two pieces of information are displayed when you use the show ip interface brief command? (Choose two.)
- A. Layer 2 address
- B. Layer 3 address
- C. encapsulation type
- D. interface status
- E. keepalive
Answer: B,D
NEW QUESTION # 37
Which command displays the configuration register setting?
- A. show version
- B. show running-config
- C. show config-register
- D. show flash
Answer: A
Explanation:
The show version command on Cisco devices provides a variety of system information, including:
Cisco IOS version: The version of the Cisco IOS software running on the device.
Boot image: The location of the IOS image used during startup.
Hardware information: Model, processor type, memory details.
Interfaces: A list of the device's interfaces.
Configuration register: The current value of the configuration register, typically displayed near the end of the output.
Why other options are incorrect:
show flash: Displays the contents of flash memory, but not the configuration register.
show running-config: Displays the currently active configuration, but the configuration register setting is not directly part of the running configuration.
show config-register: This is not a standard Cisco IOS command.
NEW QUESTION # 38
From the enable mode, which command loads the configuration during the password recovery process on a Cisco router?
- A. copy startup-config running-config
- B. load_helper
- C. copy running-config startup-config
- D. configure terminal
Answer: A
Explanation:
Section: Service-related Knowledge
NEW QUESTION # 39
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100-490 Dumps for CCT Routing and Switching Certified Exam Questions and Answer: https://certlibrary.itpassleader.com/Cisco/100-490-dumps-pass-exam.html