100-490 Certification Exam Dumps Questions in here [Jul-2024]
Updated 100-490 Exam Practice Test Questions
Know about Difficulties in writing the Cisco 100-490 Exam
There are lots of troubles a Prospect came across when Leads start getting ready for the Cisco 100-490 Exam. If a prospect intends to prepare his for the Cisco 100-490 Exam with no problem as well as also get superb qualities in the. Afterwards they need to pick the greaExam Cisco 100-490 exam dumps genuine issues technique. There are lots of net sites that are providing the most current Cisco 100-490 Exam problems along with responses yet these concerns are not validated by Microsoft recognized experts which's why numerous are fallen short in their just initial initiative. Exam4Labs is the absolute best system which supplies the prospect with the vital Cisco 100-490 Exam problems that will definitely assist him to pass the Cisco 100-490 Exam on the really very first time. The opportunity will absolutely not need to take the Cisco 100-490 Exam 2 times due to the reality that with the help of the Cisco 100-490 exam dumps Prospect will definitely have every crucial product required to pass the Cisco 100-490 Exam. We are providing one of the most roughly day along with actual inquiries which is the element that this is the one that he requires to make use of in addition to there are no chances to fail when a candidate will absolutely have genuine mind tosses out from Exam4Labs. We have the guarantee that the issues that we have will absolutely be the ones that will certainly pass possibility in the Cisco 100-490 Exam in the actually extremely initial effort.
Cisco 100-490 exam, also known as Supporting Cisco Routing and Switching Network Devices, is a certification exam that assesses the knowledge and skills of professionals in supporting small to medium-sized enterprise networks. 100-490 exam is part of the Cisco Certified Technician Routing and Switching (CCT Routing and Switching) certification, which is designed for entry-level technicians who want to validate their knowledge and skills in supporting Cisco routing and switching networks.
NEW QUESTION # 35
Which command initiates the copying of a Cisco IOS image to a Cisco device?
- A. copy tftp nvram
- B. copy tftp flash
- C. copy xmodem flash
- D. copy flash tftp
Answer: B
Explanation:
Section: Service-related Knowledge
Explanation
NEW QUESTION # 36
What are two ways Telnet and SSH function? (Choose two.)
- A. SSH uses the well-known TCP port 23 for its communication.
- B. Telnet is a protocol that provides a secure remote access connection to network devices.
- C. A Telnet network management connection is dropped when a router reboots.
- D. SSH is a protocol that provides a secure remote access connection to network devices.
- E. Telnet is preferred over SSH for security reasons.
Answer: C,D
Explanation:
* A. SSH...secure remote access: This is correct. SSH (Secure Shell) is designed specifically for secure remote access. It utilizes strong encryption to protect data transmissions, including login credentials and commands.
* B. Telnet...secure remote access: This is incorrect. Telnet is inherently insecure as it transmits all data, including sensitive passwords, in cleartext.
* C. SSH uses...TCP port 23: This is incorrect. SSH uses TCP port 22 by default, while Telnet uses TCP port 23.
* D. Telnet preferred...security reasons: This is incorrect. SSH is vastly preferred over Telnet due to its strong security features.
* E. Telnet connection...router reboots: This is correct. Telnet connections are not persistent, so a router reboot disrupts them. This re-enforces their lack of suitability for critical management tasks.
Key Points:
* Security: SSH is the recommended protocol for remote access to network devices due to its strong encryption and authentication mechanisms.
* Persistence: Telnet connections are temporary and get disrupted on events like router reboots.
NEW QUESTION # 37
Which two features are associated with single-mode fiber-optic cable? (Choose two.)
- A. has higher attenuation that multimode fiber
- B. operates over less distance than multimode fiber
- C. consists of a single strand of glass fiber
- D. costs less than multimode fiber
- E. carries a higher bandwidth that multimode fiber
Answer: C,E
Explanation:
Section: Cisco Equipment and Related Hardware
NEW QUESTION # 38
An Ethernet interface is up and the line protocol is down. What are two possible causes? (Choose two.)
- A. Keepalives are not being received by the local device.
- B. The Ethernet interface has been manually disabled.
- C. The Ethernet cable might not be attached properly.
- D. There is a Layer 2 mismatch in the encapsulation type.
- E. There is a speed or duplex mismatch with the remote device.
Answer: D,E
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 # 39
What is the fastest way to recover a software version that supports a USB flash port on a Cisco device?
- A. copy tftp flash: command
- B. xmodem transfer 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 # 40
From the enable mode, which command loads the configuration during the password recovery process on a Cisco router?
- A. copy running-config startup-config
- B. load_helper
- C. configure terminal
- D. copy startup-config running-config
Answer: D
Explanation:
The copy startup-config running-config command is used during the password recovery process on a Cisco router to load the saved configuration into the device's active running configuration. Here's why this is the correct choice:
Password Recovery Context: Password recovery often involves booting into ROMmon mode and changing the configuration register to bypass the normal boot process. This leaves the device with a blank running configuration.
Restoring Configuration: The copy startup-config running-config command copies the stored configuration (startup-config) from NVRAM into the running-config, which is used by the router for its operations.
Why other options are incorrect:
load_helper: While the load_helper command sometimes appears in password recovery procedures, it's typically used for older models and may not be necessary for all Cisco routers.
configure terminal: This command simply enters global configuration mode. It doesn't directly load a configuration.
copy running-config startup-config: This command saves the active running configuration into NVRAM as the startup-config. It's the reverse of what you need for password recovery.
NEW QUESTION # 41
Which two commands set the configuration register value? (Choose two.)
- A. rommon>config-register 0x2102
- B. router(config)#confreg 0x2102
- C. router(config)#configuration-register 0x2102
- D. router(config)#config-register 0x2102
- E. rommon>confreg 0x2102
Answer: D,E
Explanation:
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
NEW QUESTION # 42
What is the primary method for recovering or upgrading a Cisco network device system image?
- A. USB storage
- B. FTP
- C. the xmodem command
- D. the tftpdnld command
Answer: D
Explanation:
The tftpdnld command in Cisco IOS is specifically designed for recovering or upgrading a system image. Here's how it's the most effective method:
Purpose: The tftpdnld command directly initiates a TFTP download of a new system image and stores it in memory. This is ideal for replacing a corrupt image or upgrading to a newer version of Cisco IOS.
ROMmon: The tftpdnld command can often be used from ROMmon mode, which is essential when the existing image is unusable.
Efficiency: It streamlines the image transfer process specifically using TFTP, which is commonly used for Cisco IOS images.
Why other options are less ideal:
USB storage: While some newer Cisco devices may allow direct loading of an IOS image from USB, this isn't universally supported and often requires specific boot commands.
FTP: FTP (File Transfer Protocol) can be used for file transfers, but it's not as commonly used as TFTP in the context of Cisco IOS image recovery. The tftpdnld command offers a more tailored solution for this purpose.
the xmodem command: XMODEM is a legacy file transfer protocol that is slower and less reliable than TFTP, especially for larger files like Cisco IOS images.
NEW QUESTION # 43
Which method is the fastest way to recover a software version that supports a USB flash port on a Cisco device?
- A. copy tftp flash: command
- B. xmodem transfer command
- C. copy command with USB memory
- D. tftp command
Answer: C
NEW QUESTION # 44
An Ethernet interface is up and the line protocol is down. What are two possible causes? (Choose two.)
- A. Keepalives are not being received by the local device.
- B. The Ethernet interface has been manually disabled.
- C. The Ethernet cable might not be attached properly.
- D. There is a Layer 2 mismatch in the encapsulation type.
- E. There is a speed or duplex mismatch with the remote device.
Answer: D,E
Explanation:
Section: Service-related Knowledge
NEW QUESTION # 45
Which Xmodem option is used to enhance error checking of an image that is copied to flash memory?
- A. -c
- B. -e
- C. -x
- D. -r
Answer: A
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 # 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?
- A. CSU/DSU
- B. Cisco Content Engine
- C. Cisco router
- D. modem
Answer: C
NEW QUESTION # 47
Which command initiates the transfer of a Cisco IOS image over IP from ROMMON?
- A. copy flash: tftp:
- B. tftpdnld
- C. Xmodem
- D. copy tftp: flash:
Answer: B
Explanation:
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.
NEW QUESTION # 48
What is the line speed of a DS0 in North America?
- A. 16 kbps
- B. 64 kbps
- C. 128 kbps
- D. 32 kbps
Answer: B
NEW QUESTION # 49
What are two purposes of a USB thumb drive? (Choose two.)
- A. to copy configuration files to and from a PC
- B. to save the system log
- C. to save router hardware information
- D. to increase system memory size
- E. to copy IOS images to and from a PC
Answer: A,E
Explanation:
USB thumb drives (also called flash drives) serve several practical purposes in networking:
File Transfer: They are excellent for transferring Cisco router or switch configuration files between the device and a PC. This allows you to back up configurations, easily restore configurations, or work with them offline.
IOS Image Storage: USB thumb drives are convenient for storing and transferring Cisco IOS images, especially when you need to upgrade or recover network devices.
Why other options are incorrect:
to save the system log: While you might temporarily store log files on a USB drive, routers and switches generally utilize internal memory or a remote syslog server for logging purposes.
to save router hardware information: Hardware inventory information obtained from commands like show inventory is often copied and pasted to text files, which can then be stored on a USB drive. However, the drive itself doesn't directly save or store this hardware information.
to increase system memory: USB drives are not designed to act as additional system memory (RAM) for a router or switch.
NEW QUESTION # 50
Which two features are associated with single-mode fiber-optic cable? (Choose two.)
- A. has higher attenuation that multimode fiber
- B. operates over less distance than multimode fiber
- C. consists of a single strand of glass fiber
- D. costs less than multimode fiber
- E. carries a higher bandwidth that multimode fiber
Answer: C,E
NEW QUESTION # 51
Which type of Cisco console cable is used to connect a laptop to the console port on a Cisco router?
- A. rollover
- B. straight-through
- C. fiber
- D. crossover
Answer: A
Explanation:
Rollover cables are specifically designed for connecting to the console ports on Cisco routers and switches. Here's why they are the right choice:
Pinout: Rollover cables have a reversed pinout compared to standard Ethernet cables. This matches the console port's wiring, allowing for configuration access.
Appearance: Rollover cables are often light blue in color to help distinguish them from standard Ethernet cables.
USB Adapter: Many modern laptops may not have a direct serial port. In this case, a rollover cable with a USB-to-serial adapter is used.
Why other options are incorrect:
Straight-through: Used for connecting unlike devices (e.g., switch to computer). They won't have the correct wiring for console connections.
Fiber: Used for high-speed, long-distance networks. Console ports use a serial-based connection, not fiber optics.
Crossover: Used to connect similar devices (e.g., switch to switch). The pinout is not the same as what a console port requires.
NEW QUESTION # 52
What is the primary method for recovering or upgrading a Cisco network device system image?
- A. USB storage
- B. FTP
- C. the xmodem command
- D. the tftpdnld command
Answer: D
NEW QUESTION # 53
......
To pass the exam, candidates need to have a strong understanding of network design principles, including VLANs, routing protocols, and switch stacking. They also need to have a solid grasp of the different Cisco device families, such as routers, switches, and wireless access points, and be able to configure and troubleshoot them effectively.
Pass CCT Routing and Switching 100-490 Exam With 71 Questions: https://www.exam4labs.com/100-490-practice-torrent.html