[Q29-Q52] Positive Aspects of ValidExamDumps 100-490 Exam Dumps! [Mar-2025]

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Positive Aspects of Valid Dumps 100-490 Exam Dumps! [Mar-2025]

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Cisco 100-490 exam is an important certification for IT professionals who are looking to advance their career in the field of network engineering. Supporting Cisco Routing and Switching Network Devices certification validates the candidates’ knowledge and skills in supporting Cisco routing and switching network devices, which are essential for any organization that relies on a network infrastructure. Supporting Cisco Routing and Switching Network Devices certification also demonstrates the candidates’ commitment to continuous learning and professional development.

QUESTION 29
What is the Windows-based program that executes the ping command to test network connectivity?

cmd

Find

Start

ipconfig

QUESTION 30
Which command initiates the transfer of a Cisco IOS image over IP from ROMMON?

Xmodem

copy tftp: flash:

copy flash: tftp:

tftpdnld

Section: Service-related Knowledge

QUESTION 31
Which two pieces of information about a neighboring device are displayed when you use the CLI command show cdp neighbor? (Choose two.)

platform

uptime

device ID

Cisco IOS Software version

IP address

Section: Cisco IOS Software Operation

QUESTION 32
Which type of memory is used to permanently store Cisco IOS Software?

NVRAM

flash

SRAM

DRAM

Section: Cisco IOS Software Operation

QUESTION 33
Which command initiates the copying of a Cisco IOS image to a Cisco device?

copy tftp nvram

copy tftp flash

copy flash tftp

copy xmodem flash

The copy tftp flash command is used to download a Cisco IOS image from a TFTP (Trivial File Transfer Protocol) server and store it in the Flash memory of the Cisco device. Here’s the breakdown of the command:
copy: Indicates a file transfer operation.
tftp: Specifies the use of the TFTP protocol.
flash: Specifies the destination as the flash memory of the Cisco device.
Why other options are incorrect:
copy tftp nvram: This would attempt to copy a file from a TFTP server to the NVRAM of the device. NVRAM is typically not the desired location for storing IOS images.
copy flash tftp: This command would copy a file from the local flash memory to a TFTP server (uploading).
copy xmodem flash: This would use the XMODEM protocol for the transfer, which is slower and less reliable than TFTP for Cisco IOS images.
https://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol

QUESTION 34
What is the default operating mode when you initially log in to a router?

user EXEC

global configuration

privileged EXEC

ROM monitor

When you initially log in to a Cisco router, the default operating mode is user EXEC mode. This mode provides a limited set of basic monitoring commands but does not allow for any configuration changes to the router’s settings. To make configuration changes, you must enter privileged EXEC mode (often accessed by the enable command), which offers a wider range of commands that allow for the viewing and modification of the configurationGlobal configuration mode is accessed from privileged EXEC mode to modify the router’s configuration, and ROM monitor mode is a low-level mode used mainly for recovery purposes1.

QUESTION 35
Which two pieces of information are displayed when you use the show ip interface brief command? (Choose two.)

Layer 2 address

keepalive

Layer 3 address

encapsulation type

interface status

Section: Cisco IOS Software Operation

QUESTION 36
Which two pieces of information are displayed when you use the show ip interface brief command? (Choose two.)

Layer 2 address

keepalive

Layer 3 address

encapsulation type

interface status

QUESTION 37
Which two IPv4 addresses can be assigned to a host computer? (Choose two.)

255.255.255.255

10.1.1.20

0.0.0.0

192.168.10.15

292.10.3.4

QUESTION 38
ESD is the sudden and momentary electric current that flows between two objects at different electrical potentials, caused by direct contact or induced by an electrostatic field. Which three tools are used to avoid ESD? (Choose three.)

negative static bag

antistatic mat

ESD wrist strap

negative static mat

antistatic bag

latex gloves

Electrostatic Discharge (ESD) poses a significant risk to delicate electronic components. Here’s why the correct answers are essential tools for ESD protection:
Antistatic Mat: Provides a grounded surface to work on, dissipating static buildup from your body and the components you’re handling.
ESD Wrist Strap: When connected to a grounding point (often on the antistatic mat), this strap creates an electrical path to safely discharge static electricity from your body.
Antistatic Bag: These special bags are designed to shield sensitive components from static charge, crucial for storing and transporting electronic parts.
Why other options are incorrect:
Negative static bag, negative static mat: These terms don’t exist in standard ESD protection practices. The focus is on creating a grounded environment to neutralize static charges.
Latex gloves: While they offer insulation, they can actually generate static electricity, increasing the risk of ESD damage.

QUESTION 39
From a Windows command prompt, which command displays the local IP address of a computer?

ipconfiguration

ip configuration

ipconfig

ip config

QUESTION 40
What are two standard fiber-optic connectors? (Choose two.)

Lucent

rollover

subscriber

multidimension

crossover

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.

QUESTION 41
Which two commands set the configuration register value? (Choose two.)

rommon>confreg 0x2102

router(config)#confreg 0x2102

rommon>config-register 0x2102

router(config)#configuration-register 0x2102

router(config)#config-register 0x2102

The configuration register on Cisco routers and switches controls specific bootup behaviors. Here’s how to modify it:
1. In ROMmon Mode:
rommon>confreg 0x2102 : This command is used when the device is in ROMmon mode (a basic operating system loaded when the full Cisco IOS cannot be found). ROMmon offers limited functionality and is often used for troubleshooting or password recovery.
2. In Global Configuration Mode:
router(config)#config-register 0x2102 : This command is used from within the Cisco IOS itself when you have normal access to the router. You would enter privileged EXEC mode and then global configuration mode to use it.
Importance of Configuration Register Settings:
The most common reasons to modify the configuration register are:
Password Recovery: Setting the configuration register to 0x2142 tells the router to ignore the startup configuration (stored in NVRAM), allowing you to bypass password protection.
Changing Boot Behavior: Settings can control the boot sequence, such as specifying where the Cisco IOS image should be loaded from.
Reference:
Cisco Configuration Register: https://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/50421-config-register-use.html Understanding the Configuration Register (Cisco): https://networklessons.com/cisco/ccna-routing-switching-icnd1-100-105/configuration-register-cisco-ios

QUESTION 42
Which two Cisco Nexus 3400 Series switches support 400-Gbps Ethernet ports? (Choose two.)

Cisco Nexus 34180YC

Cisco Nexus 34200YC-SM

Cisco Nexus 3432D-S

Cisco Nexus 3408-S

Cisco Nexus 3464C

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 43
From a Windows command prompt, which command displays the local IP address of a computer?

ipconfiguration

ip configuration

ipconfig

ip config

Section: Service-related Knowledge

QUESTION 44
Which Xmodem option is used to enhance error checking of an image that is copied to flash memory?

-e

-r

-c

-x

QUESTION 45
Which address facilitates the routing of packets over an IP network?

physical

transport

network

MAC

QUESTION 46
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?

Cisco Content Engine

modem

Cisco router

CSU/DSU

Section: Service-related Knowledge

QUESTION 47
What does Cisco use for Return Materials Authorization tracking of field-replaceable parts?

product number

serial number

RMA number

FRU number

QUESTION 48
What are two purposes of a USB thumb drive? (Choose two.)

to save the system log

to copy configuration files to and from a PC

to save router hardware information

to copy IOS images to and from a PC

to increase system memory size

Section: Service-related Knowledge

QUESTION 49
Which two statements about a SmartJack are true? (Choose two.)

It provides signal conversion.

It acts as a concentration point for dial-in and dial-out connections.

It operates at Layer 2 of the OSI model.

It provides channel testing.

It regenerates the signal to compensate for signal degradation from line transmission.

Section: Cisco Equipment and Related Hardware

QUESTION 50
Which type of memory stores the configuration of a router or switch by default?

RAM

ROM

NVRAM

flash

NVRAM (Non-Volatile Random Access Memory) is the default storage location for the startup configuration file of a Cisco router or switch.expand_more Here’s why:
Non-Volatility: NVRAM retains its contents even when the device loses power.expand_more This is essential for storing the startup configuration, which contains critical settings like interface configurations, routing protocols, and passwords.
Read/Write Capability: Unlike ROM, NVRAM allows you to both read and write data. This makes it possible to modify the configuration and save the changes into NVRAM as the startup configuration.
Other Memory Types and Their Functions:
RAM (Random Access Memory): RAM is volatile memory, meaning it loses its contents when the device is powered off.expand_more It’s used to store the running configuration (currently active configuration), routing tables, and other temporary data required for the device’s operation.
ROM (Read-Only Memory): ROM is non-volatile and stores the bootstrap program used to initiate the boot process of the device.expand_more It’s not modifiable by the user.expand_more Flash: Flash memory is also non-volatile.expand_more It’s primarily used to store the Cisco IOS image (operating system) and can also store backup configuration files and other data.

QUESTION 51
Which command initiates the transfer of a Cisco IOS image over IP from ROMMON?

Xmodem

copy tftp: flash:

copy flash: tftp:

tftpdnld

The tftpdnld command is specifically designed to initiate a TFTP (Trivial File Transfer Protocol) transfer of an image within ROMmon mode on a Cisco device. Here’s why it’s the correct answer:
ROMmon Functionality: ROMmon (Read-Only Memory Monitor) is a basic operating system mode used when the main Cisco IOS is unavailable. The tftpdnld command works from ROMmon to download a new IOS image.
TFTP Protocol: The tftpdnld command utilizes TFTP, which is a simple and reliable protocol commonly used for transferring Cisco IOS images.
Purpose: The command is used primarily for recovering corrupt images or upgrading to a different IOS version.
Why other options are incorrect:
Xmodem: XMODEM is an older and less reliable file transfer protocol that’s less suitable than TFTP for Cisco IOS image transfers.
copy tftp: flash: This command format is used within the Cisco IOS itself, not in ROMmon mode.
copy flash: tftp: This command format would attempt to upload an image from flash memory to a TFTP server, instead of downloading an image.

QUESTION 52
Which two statements about Telnet and SSH are true? (Choose two.)

SSH is a protocol that provides a secure remote access connection to network devices.

SSH uses the well-known TCP port 23 for its communication.

A Telnet network management connection is dropped when a router reboots.

Telnet is a protocol that provides a secure remote access connection to network devices.

Telnet is preferred over SSH for security reasons.

A . Correct. SSH, or Secure Shell, is indeed a protocol that provides a secure remote access connection to network devices. It encrypts the data to ensure secure transmission over insecure networks like the internet1.
C . Correct. Telnet connections are not secure and are terminated when a router reboots. This is because Telnet does not have any mechanism to maintain the connection in case of network interruptions or device reboots1.
B, D, and E are incorrect because: B. SSH uses TCP port 22 by default, not port 23, which is used by Telnet1. D . Telnet does not provide a secure connection; it transmits data in plain text, which can be intercepted easily1. E. SSH is preferred over Telnet for security reasons because it provides encrypted connections and authentication mechanisms, which Telnet does not1.
Reference :=
1: GeeksforGeeks – Difference between SSH and Telnet 2: phoenixNAP – Telnet vs. SSH: How Is SSH Different From Telnet? 3: Guru99 – Telnet vs SSH – Difference Between Them 4: Difference Between – Difference Between Telnet and SSH

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Cisco 100-490 exam is a valuable certification for professionals who work with Cisco routing and switching devices. It not only validates their skills and knowledge in the field but also enhances their career prospects by opening up new opportunities. Supporting Cisco Routing and Switching Network Devices certification is recognized globally and is highly respected in the industry, which makes it an essential requirement for professionals who want to advance their careers in the networking field.

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