GUARANTEED CISCO 100-490 SUCCESS - 100-490 RELIABLE EXAM TEST

Guaranteed Cisco 100-490 Success - 100-490 Reliable Exam Test

Guaranteed Cisco 100-490 Success - 100-490 Reliable Exam Test

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Cisco 100-490 Certification Exam is a globally recognized certification that is highly valued by employers. Supporting Cisco Routing and Switching Network Devices certification is designed to validate the candidate's expertise in supporting Cisco routing and switching network devices. Supporting Cisco Routing and Switching Network Devices certification exam is ideal for network engineers and administrators who want to enhance their career prospects and demonstrate their technical expertise. Supporting Cisco Routing and Switching Network Devices certification exam is a great way to distinguish yourself from other candidates and showcase your skills and knowledge in supporting Cisco routing and switching network devices.

Cisco Supporting Cisco Routing and Switching Network Devices Sample Questions (Q53-Q58):

NEW QUESTION # 53
Which two IPv4 addresses can be assigned to a host computer? (Choose two.)

  • A. 255.255.255.255
  • B. 292.10.3.4
  • C. 192.168.10.15
  • D. 10.1.1.20
  • E. 0.0.0.0

Answer: C,D

Explanation:
IPv4 addresses consist of four octets, each ranging from 0 to 255. The addresses are used to uniquely identify devices on a network.
A . 255.255.255.255 is reserved for broadcast messages to all hosts on the local network, so it cannot be assigned to a single host.
B . 10.1.1.20 falls within the range of private IP addresses (10.0.0.0 to 10.255.255.255) and can be assigned to a host within a private network.
C . 0.0.0.0 is used to denote an unknown or non-applicable target address, often used as a default route, and cannot be assigned to a host.
D . 192.168.10.15 is also within the range of private IP addresses (192.168.0.0 to 192.168.255.255) and can be assigned to a host within a private network.
E . 292.10.3.4 is not a valid IPv4 address because the first octet exceeds the maximum value of 255.
Reference:
IPv4 Addressing
Valid IP Address
IP Address Validation


NEW QUESTION # 54
What are two ways Telnet and SSH function? (Choose two.)

  • A. SSH is a protocol that provides a secure remote access connection to network devices.
  • B. Telnet is preferred over SSH for security reasons.
  • C. A Telnet network management connection is dropped when a router reboots.
  • D. SSH uses the well-known TCP port 23 for its communication.
  • E. Telnet is a protocol that provides a secure remote access connection to network devices.

Answer: A,C

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 # 55
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. Keepalives are not being received by the local device.
  • E. The Ethernet interface has been manually disabled.

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 # 56

Refer to the exhibit. Which two statements about the hardware components are true? (Choose two.)

  • A. 1 is a USB Type A port.
  • B. 2 is a USB 5-pin mini USB Type B to USB Type A console cable.
  • C. 2 is an RJ-45 to USB Type A console cable.
  • D. 3 is a USB 5-pin mini USB Type B port.
  • E. 3 is a USB Type A port.

Answer: B,E

Explanation:
Section: Cisco Equipment and Related Hardware
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/routers/access/2900/hardware/installation/guide/ Hardware_Installation_Guide/Install_Connect.html


NEW QUESTION # 57
What is the primary method for recovering or upgrading a Cisco network device system image?

  • A. FTP
  • B. the tftpdnld command
  • C. the xmodem command
  • D. USB storage

Answer: B


NEW QUESTION # 58
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