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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.

Cisco 100-490 exam covers a range of topics, including network fundamentals, LAN switching technologies, routing technologies, WAN technologies, infrastructure services, and infrastructure maintenance. Candidates will need to demonstrate their understanding of fundamental network concepts such as network topology, protocols, and addressing schemes. They will also need to show their ability to configure and troubleshoot various Cisco routing protocols, including OSPF, EIGRP, and BGP. Additionally, candidates will need to demonstrate their knowledge of VLANs, VLAN trunking protocols, and Spanning Tree Protocol (STP).

The Cisco 100-490 Exam is conducted in a proctored environment and consists of multiple-choice questions. 100-490 exam duration is 90 minutes, and candidates are required to score at least 70% to pass the exam. 100-490 exam fee varies based on the location and currency.

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Cisco Supporting Cisco Routing and Switching Network Devices Sample Questions (Q57-Q62):

NEW QUESTION # 57
What is the fastest way to recover a software version that supports a USB flash port on a Cisco device?

A. xmodem transfer command
B. copy tftp flash: command
C. copy command with USB memory
D. tftp command

Answer: C

Explanation:
The fastest way to recover a software version on a Cisco device that supports a USB flash port is by using the copy command with USB memory. This method allows for the direct transfer of the Cisco IOS image from a USB flash drive to the device's memory. It is significantly faster than using TFTP or Xmodem, which are slower due to network speed limitations and the inherent slowness of the Xmodem protocol, respectively. By using a USB flash drive, you can bypass these limitations and achieve a quicker recovery process

NEW QUESTION # 58
How many pairs of copper wire does a UTP cable have?

A. 0
B. 1
C. 2
D. 3

Answer: B

Explanation:
A standard UTP (Unshielded Twisted Pair) cable contains 4 pairs of copper wires, which are twisted together to help cancel out electromagnetic interference and support data transmission across various networking and telecommunications applications1. Each pair consists of two individual copper cables twisted around each othe

NEW QUESTION # 59
An Ethernet interface is up and the line protocol is down. What are two possible causes? (Choose two.)

A. There is a Layer 2 mismatch in the encapsulation type.
B. There is a speed or duplex mismatch with the remote device.
C. The Ethernet cable might not be attached properly.
D. The Ethernet interface has been manually disabled.
E. Keepalives are not being received by the local device.

Answer: A,B

Explanation:
While the initial answers focused on the most common causes, here's why the other options could also contribute to an interface being stuck in the "up/down" state:
A . Speed or Duplex Mismatch: Devices on either end of an Ethernet connection need to use compatible speed (e.g., 100 Mbps, 1 Gbps) and duplex (full-duplex or half-duplex) settings. Mismatches can prevent the line protocol from coming up even if the physical link is established.
B . Layer 2 Mismatch in Encapsulation Type: Some protocols used on Ethernet networks, like ISL and 802.1Q, have specific encapsulation requirements. If devices on each end aren't using the same encapsulation type, the line protocol will likely remain down.
C . The Ethernet Interface Has Been Manually Disabled: Correct! Administrators can put an interface in a shutdown state using commands like shutdown. This brings down the line protocol even if the physical connection is good.
D . Keepalives Are Not Being Received by the Local Device: While less likely to be the sole cause, issues with keepalive mechanisms used in some routing protocols could potentially lead to the line protocol going down. If the local device expects keepalives and doesn't receive them, it might assume a connectivity problem and affect the interface status.
E . The Ethernet Cable Might Not Be Attached Properly: While a disconnected or faulty cable would usually make the interface down/down, it's possible in some scenarios for a partially connected or damaged cable to result in a link being detected (Layer 1 up) but with errors preventing the line protocol (Layer 2) from initializing.
Troubleshooting network issues often involves considering multiple factors and testing different possibilities. The "up/down" status gives important clues but might have several potential root causes.

NEW QUESTION # 60
From a Windows command prompt, which command displays the local IP address of a computer?

A. ipconfig
B. ipconfiguration
C. ip configuration
D. ip config

Answer: A

Explanation:
The ipconfig command in Windows is used to display and manage network configuration information for the local computer. Here's what it shows:
IP Address: The IPv4 address assigned to each network adapter.
Subnet Mask: The subnet mask used to determine the network segment.
Default Gateway: The IP address of the router used to send traffic to other networks.
Other Information: DNS servers, DHCP server details, and more.
Incorrect options:
ipconfiguration: This is not a recognized command in the Windows command prompt.
ip configuration: This is also not a recognized command.
ip config: While it might seem like it should work, Windows uses ipconfig without spaces.
How to use ipconfig:
Open the Windows command prompt (Search for 'cmd')
Type ipconfig and press Enter.
Reference:
Microsoft documentation on ipconfig: https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ipconfig

NEW QUESTION # 61
Which Xmodem option enhances error checking of an image copied to flash memory?

A. -x
B. -r
C. -c
D. -e

Answer: D

Explanation:
The Xmodem option that enhances error checking when copying an image to flash memory is the -e option. This option enables error checking to ensure the integrity of the file being transferred. Xmodem is a protocol that uses checksums or cyclic redundancy checks (CRC) to detect errors during the transfer. The -e option specifically invokes CRC error checking, which is more reliable than the basic checksum method, providing an additional layer of verification that the copied image is free from errors. Reference := The information is based on standard practices for using the Xmodem protocol for file transfers in networking devices, as outlined in Cisco's documentation and support forums1.

NEW QUESTION # 62
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