[Nov 16, 2024] 100-490 Ultimate Study Guide - Actual4Exams
Ultimate Guide to Prepare 100-490 Certification Exam for CCT Routing and Switching in 2024
Cisco 100-490 Practice Test Questions, Cisco 100-490 Exam Practice Test Questions
The Cisco 100-490 RSTECH exam is a prerequisite for getting the Cisco Certified Technician (CCT) Routing & Switching certification. This test focuses on the skills required for performing onsite support as well as maintenance of Cisco operating environments, switches, and routers. The successful candidates will be able to determine Cisco router & switch models, cabling, accessories, and interfaces; comprehend the Cisco IOS software operating modes; define often encountered software; utilize the Cisco Command Line Interface (CLI) to link as well as service products.
The Cisco 100-490 exam covers a wide range of topics related to Cisco routing and switching devices, including configuration, troubleshooting, and maintenance. It tests the candidate's ability to identify and resolve network issues related to Cisco devices, as well as their understanding of the underlying technologies and protocols.
NEW QUESTION # 14
Which command shows the status of power supplies and sensor temperatures?
- A. show module
- B. show environment
- C. show hardware
- D. show diag
Answer: B
Explanation:
The show environment command in Cisco devices is used to display the status of the system's environment, including power supplies and sensor temperatures. This command provides a comprehensive overview of the environmental conditions affecting the device, such as temperature readings and power supply status.
Option A, show hardware, is not specific to power supplies and sensor temperatures. Option B, show module, displays information about the network modules installed in the device but not the environmental conditions. Option D, show diag, is used for diagnostic purposes and does not specifically provide the status of power supplies and sensor temperatures.
Therefore, the correct answer is C, show environment, which is the command that specifically shows the status of power supplies and sensor temperatures in Cisco devices12.
Reference:
Cisco Community discussions on power supply details1.
Cisco documentation on Environmental Monitoring and Power Management2.
NEW QUESTION # 15
Which two IPv4 addresses can be assigned to a host computer? (Choose two.)
- A. 292.10.3.4
- B. 192.168.10.15
- C. 0.0.0.0
- D. 255.255.255.255
- E. 10.1.1.20
Answer: B,E
NEW QUESTION # 16
Which type of physical connector does a Gigabit Ethernet port typically use?
- A. RJ-45
- B. DB-25
- C. RJ-11
- D. RJ-9
Answer: A
Explanation:
Section: Cisco Equipment and Related Hardware
NEW QUESTION # 17
Which command initiates the transfer of a Cisco IOS image over IP from ROMMON?
- A. copy flash: tftp:
- B. Xmodem
- C. tftpdnld
- D. copy tftp: flash:
Answer: C
Explanation:
Section: Service-related Knowledge
NEW QUESTION # 18
Which command sends an echo request packet to the target host and then waits for an echo response message?
- A. connect
- B. echo
- C. ping
- D. access
Answer: C
Explanation:
Section: Cisco IOS Software Operation
NEW QUESTION # 19
What are two standard fiber-optic connectors? (Choose two.)
- A. subscriber
- B. Lucent
- C. multidimension
- D. rollover
- E. crossover
Answer: A,B
Explanation:
Section: Cisco Equipment and Related Hardware
NEW QUESTION # 20
What are two standard fiber-optic connectors? (Choose two.)
- A. subscriber
- B. Lucent
- C. multidimension
- D. rollover
- E. crossover
Answer: A,B
NEW QUESTION # 21
Which two ports on a laptop are used to gain console access to a Cisco switch? (Choose two.)
- A. RJ-45 Ethernet
- B. DVI
- C. USB
- D. RJ-11
- E. DB-9
Answer: C,E
Explanation:
Section: Cisco Equipment and Related Hardware
NEW QUESTION # 22
Which two pieces of information are displayed when you use the show ip interface brief command? (Choose two.)
- A. encapsulation type
- B. Layer 2 address
- C. keepalive
- D. Layer 3 address
- E. interface status
Answer: D,E
NEW QUESTION # 23
From a Windows command prompt, which command displays the local IP address of a computer?
- A. ip config
- B. ipconfiguration
- C. ip configuration
- D. ipconfig
Answer: D
Explanation:
Section: Service-related Knowledge
NEW QUESTION # 24
What are two descriptions for FTP? (Choose two.)
- A. FTP uses UDP as its transport protocol.
- B. A Cisco router must be configured with the appropriate username and password because FTP usually requires authentication.
- C. FTP loads Cisco IOS Software to a router in ROMMON mode.
- D. A router is able to act as an FTP server.
- E. The copy running-config ftp: command copies a configuration file from an FTP server to the running configuration.
Answer: B,E
Explanation:
1. It is built on a client-server model architecture and uses separate control and data connections between the client and the server2. Here are the explanations for the correct answers:
* B: The copy running-config ftp: command is used to copy the running configuration from a router to an FTP server or vice versa. This is a common method for backing up and restoring configurations on Cisco devices1.
* E: FTP typically requires authentication, which means a Cisco router acting as an FTP client must be configured with the appropriate username and password to access an FTP server. This ensures secure file transfer and access control1.
The other options are incorrect because:
* A: FTP is not used to load Cisco IOS Software to a router in ROMMON mode; this is typically done using TFTP or Xmodem.
* C: While a router can act as an FTP server, this is not a description of FTP itself.
* D: FTP uses TCP as its transport protocol, not UDP. FTP needs the reliability that TCP provides because it ensures the complete and accurate transfer of files1.
NEW QUESTION # 25
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. modem
- C. Cisco router
- D. Cisco Content Engine
Answer: C
NEW QUESTION # 26
Which command displays information about the carrier network, cell site, and available service?
- A. show cellular unit network
- B. show cellular unit radio
- C. show cellular unit profile
- D. show cellular unit hardware
Answer: A
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 # 27
Which two statements about a SmartJack are true? (Choose two.)
- A. It provides signal conversion.
- B. It provides channel testing.
- C. It operates at Layer 2 of the OSI model.
- D. It acts as a concentration point for dial-in and dial-out connections.
- E. It regenerates the signal to compensate for signal degradation from line transmission.
Answer: A,E
Explanation:
SmartJacks are specialized devices used in telecommunications, particularly for T1/E1 lines. Here's why the correct answers make sense:
Signal Conversion: SmartJacks can convert between different signaling types (e.g., AMI to B8ZS). This is necessary because different telecommunication lines may use varying signaling standards.exclamation Signal Regeneration: As signals travel over long distances, they can weaken and degrade.expand_more SmartJacks help regenerate the signal, ensuring that it maintains its strength and integrity throughout the transmission.expand_more Why other options are incorrect:
Concentration point: SmartJacks are not primarily used as concentration points for dial-in/out connections.exclamation This function is typically handled by modems or other specialized devices.exclamation Layer 2 operation: SmartJacks primarily operate at Layer 1 (Physical Layer) of the OSI model, focusing on the physical transmission of signals.
Channel Testing: While some SmartJacks may offer some basic channel testing capabilities, their primary functions are signal conversion and regeneration.
Reference:
SmartJack (Wikipedia): https://en.wikipedia.org/wiki/Smartjack
NEW QUESTION # 28
The pins on an RJ-45 cable plug are numbered from 1 through 8. When the metal pins of the plug are facing toward you, pin 1 is the leftmost pin. Which two sets of pins are looped on an RJ-45 56K loopback plug?
(Choose two.)
- A. pins 2 and 7
- B. pins 1 and 7
- C. pins 1 and 4
- D. pins 2 and 8
- E. pins 2 and 5
Answer: C,E
Explanation:
Section: Cisco Equipment and Related Hardware
Explanation/Reference:
NEW QUESTION # 29
Which Xmodem option enhances error checking of an image copied to flash memory?
- A. -x
- B. -e
- C. -r
- D. -c
Answer: B
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 # 30
Which two Cisco Nexus 3400 Series switches support 400-Gbps Ethernet ports? (Choose two.)
- A. Cisco Nexus 34200YC-SM
- B. Cisco Nexus 34180YC
- C. Cisco Nexus 3464C
- D. Cisco Nexus 3432D-S
- E. Cisco Nexus 3408-S
Answer: D,E
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3400s/sw/922/interfaces/ configuration/guide/b_Cisco_Nexus_3400_NX-OS_Interfaces_Configuration_Guide_922/ b_Cisco_Nexus_3400_NX-OS_Interfaces_Configuration_Guide_9z_chapter_010.html
NEW QUESTION # 31
Which two pieces of information are displayed when the show ip interface brief command is used? (Choose two.)
- A. encapsulation type
- B. Layer 2 address
- C. keepalive
- D. Layer 3 address
- E. interface status
Answer: D,E
Explanation:
The show ip interface brief command provides a concise summary of the status and IP addressing configuration of interfaces on a Cisco router or switch. Here's what it displays:
Interface: The name of the interface (e.g., FastEthernet0/0, GigabitEthernet1/1).
IP Address: The Layer 3 IP address assigned to the interface (if any).
OK? Indicates the IP layer status of the interface (YES if operational, NO if not).
Method: How the IP address was configured (manual or DHCP).
Status: The Layer 1 status of the interface (up or down).
Protocol: The Layer 2 status of the interface (up or down).
Why other options are incorrect:
Layer 2 address: The show ip interface brief command does not directly display Layer 2 (MAC) addresses. You can use the show interface <interface-name> command for that.
Keepalive: Keepalives are used in some routing protocols but are not generally reflected in the output of the show ip interface brief command.
Encapsulation type: Encapsulation information is also not typically included in the show ip interface brief output.
Reference:
Cisco IOS show ip interface brief command: [invalid URL removed]
Example output of show ip interface brief: https://www.cisco.com/E-Learning/bulk/public/tac/cim/cib/using_cisco_ios_software/cmdrefs/show_ip_interface.
NEW QUESTION # 32
Cisco NX-OS has added the ability to use which type of custom scripting to help manage user networks?
- A. Python
- B. SQL
- C. C++
- D. Collective
Answer: A
NEW QUESTION # 33
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. SSH uses the well-known TCP port 23 for its communication.
- D. Telnet is a protocol that provides a secure remote access connection to network devices.
- E. A Telnet network management connection is dropped when a router reboots.
Answer: A,E
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 # 34
Which command provides detailed information about the components that are installed on a router, such as the model, PID, and serial number?
- A. show inventory
- B. show router
- C. show chassis
- D. show items
Answer: A
Explanation:
The show inventory command in Cisco IOS is designed specifically to display detailed hardware inventory information about a Cisco device. This includes:
Component Name: The name or type of each module or card installed.
PID (Product ID): The unique product identifier for the module.
VID (Version ID): The version identifier for the module.
Serial Number: The unique serial number assigned to the module.
Why other options are incorrect:
show chassis: Some Cisco devices support a show chassis command, but the information provided usually focuses on the physical chassis rather than detailed component inventory.
show items: This is not a standard Cisco IOS command.
show router: This command doesn't provide the level of granular hardware information that show inventory does.
NEW QUESTION # 35
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Cisco 100-490 certification exam is designed for network professionals who want to validate their skills in supporting Cisco routing and switching network devices. 100-490 exam covers a range of topics, including network fundamentals, network access, IP connectivity, IP services, security fundamentals, and automation and programmability. Participants who pass the exam will earn the Cisco Certified Technician Routing and Switching (CCT Routing and Switching) certification.
CCT Routing and Switching Fundamentals-100-490 Exam-Practice-Dumps: https://preptorrent.actual4exams.com/100-490-real-braindumps.html