(2025) RCNI Exam Dumps, Practice Test Questions BUNDLE PACK
High-stakes Industry Certification RCNI Sample Questions Reliable
RUCKUS RCNI Exam Syllabus Topics:
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NEW QUESTION # 29
Which configuration steps will add untagged ethernet ports 1/1/1 and 1/1/2 and tagged ethernet port 1/2/1 to VLAN 10?
- A. untagged ethernet 1/1/1 to 1/1/2 vlan 10
tagged ethernet 1/2/1 vlan 10 - B. vlan 10
no tagged ethernet 1/1/1 to 1/1/2
tagged ethernet 1/2/1 - C. untagged ethernet 1/1/1 to 1/1/2
tagged ethernet 1/2/1
vlan 10 - D. vlan 10
untagged ethernet 1/1/1 to 1/1/2
tagged ethernet 1/2/1
Answer: D
Explanation:
To configure RUCKUS ICX switch ports 1/1/1 and 1/1/2 as untagged members of VLAN 10, and port 1/2/1 as a tagged member of VLAN 10, follow these steps:
* Access the Switch's Command Line Interface (CLI):
* Use SSH or a direct console connection to access the switch's CLI.
* Enter Global Configuration Mode:
* At the prompt, enter:
bash
Copy code
enable
configure terminal
* Create or Select VLAN 10:
* Ensure VLAN 10 exists. If not, create it:
Copy code
vlan 10
* Assign Ports 1/1/1 and 1/1/2 as Untagged in VLAN 10:
* Within VLAN 10 configuration, assign the ports:
css
Copy code
untagged ethernet 1/1/1 to 1/1/2
* Assign Port 1/2/1 as Tagged in VLAN 10:
* Still within VLAN 10 configuration, assign the port:
Copy code
tagged ethernet 1/2/1
* Exit Configuration Mode and Save Changes:
* Exit to the previous mode:
bash
Copy code
exit
* Save the configuration to ensure changes persist after a reboot:
arduino
Copy code
write memory
* VLAN Configuration:
* The command vlan 10 selects VLAN 10 for configuration. If VLAN 10 does not exist, this command creates it.
* Untagged Ports:
* The command untagged ethernet 1/1/1 to 1/1/2 assigns ports 1/1/1 and 1/1/2 as untagged members of VLAN 10. Untagged ports are typically used for end devices that do not tag their own traffic.
* Tagged Ports:
* The command tagged ethernet 1/2/1 assigns port 1/2/1 as a tagged member of VLAN 10. Tagged ports are commonly used for trunk links between switches or other network devices that handle multiple VLANs.
* Command Syntax:
* The sequence of commands in option D correctly follows the RUCKUS ICX switch configuration syntax, ensuring that the ports are appropriately assigned to VLAN 10.
References:
* VLAN configuration on Ruckus ICX switches for Ruckus Wireless WLAN's
* ICX 7150 tag port VLAN1 - RUCKUS Community Forums
NEW QUESTION # 30
Which three conditions allow an ARP request or response to pass a Dynamic ARP Inspection (DAI) check? (Choose three.)
- A. Client authenticated using RADIUS on an 802.1X enabled port.
- B. Request originated on a trusted port.
- C. The IP/MAC pair appear in the DHCP binding database.
- D. Client authenticated using MAC authentication.
- E. There is a static reservation for the IP/MAC pair in the DHCP pool.
- F. A static ARP entry exists for the IP/MAC pair with the inspection flag set.
Answer: B,C,D
NEW QUESTION # 31
In the following output, what is the bridge priority of the root in hex?
- A. 0
- B. 1
- C. 2
- D. 9c49
Answer: C
NEW QUESTION # 32
Which command can be used to identify Cyclic Redundancy Check (CRC) errors on port Ethernet 1/1/1?
- A. show mac-address ethernet 1/1/1
- B. show statistics ethernet 1/1/1
- C. show port security ethernet 1/1/1
- D. show interfaces brief ethernet 1/1/1
Answer: B
Explanation:
* Locating CRC Errors:
* The show statistics ethernet [port] command provides detailed port statistics, including packet counts, errors, and specifically Cyclic Redundancy Check (CRC) errors.
* Why Other Commands Don't Work:
* B. show interfaces brief ethernet 1/1/1: This provides a summary of interface status but does not include detailed error information like CRC errors.
* C. show mac-address ethernet 1/1/1: This displays MAC address table entries for the specified port, unrelated to error statistics.
* D. show port security ethernet 1/1/1: This shows port security configurations and violations, not errors like CRC.
References:
* ICX Switch Command Reference: RUCKUS Documentation
NEW QUESTION # 33
Which command could be used to find the system name of an attached device?
- A. show chassis
- B. ping
- C. show lldp neighbors
- D. show inline power
Answer: A
NEW QUESTION # 34
Based on the following configuration, which statement is true?
ICX-Router (config)# ipv6 unicast-routing
ICX-Router (config)# interface ethernet 1/3/1
ICX-Router (config-if-e1000-1/3/1)# ip address 10.172.10.1/24
ICX-Router (config-if-e1000-1/3/1)# ipv6 address 2001:db8:12d:1300::/64
- A. The ipv6 enable command must also be configured at the interface level.
- B. The interface will transmit and receive both IPv4 and IPv6 traffic simultaneously.
- C. ICX devices only support dual-stacked IPv4 and IPv6 configuration on a VE interface.
- D. ICX devices do not support IPv4 and IPv6 addresses configured on the same interface.
Answer: B
Explanation:
In RUCKUS ICX devices, interfaces can be configured to support both IPv4 and IPv6 addresses concurrently, a setup known as dual-stack configuration. This allows the interface to handle both IPv4 and IPv6 traffic simultaneously.
Given the configuration:
ICX-Router (config)# ipv6 unicast-routing
ICX-Router (config)# interface ethernet 1/3/1
ICX-Router (config-if-e1000-1/3/1)# ip address 10.172.10.1/24
ICX-Router (config-if-e1000-1/3/1)# ipv6 address 2001:db8:12d:1300::/64
* The command ipv6 unicast-routing enables IPv6 routing on the device globally.
* Within the interface configuration mode for Ethernet 1/3/1, the ip address command assigns an IPv4 address, and the ipv6 address command assigns an IPv6 address to the same interface.
This configuration allows the interface to transmit and receive both IPv4 and IPv6 traffic simultaneously, facilitating communication in a dual-stack network environment.
Therefore, the correct statement is:
B: The interface will transmit and receive both IPv4 and IPv6 traffic simultaneously.
NEW QUESTION # 35
Why is the following command failing?
RKUS-01(config)#vlan 1
RKUS-01(config-vlan-1)#tagged ethernet 1/2/1
Invalid input -> tagged ethernet 1/2/1
Type ? for a list
- A. VLAN 1 must be configured as a protocol-based VLAN before tagged ports can be added.
- B. The default VLAN cannot be tagged to any interfaces.
- C. A Virtual Ethernet interface must be defined before a tagged port can be added.
- D. This model ICX does not have an interface Ethernet 1/2/1.
Answer: B
NEW QUESTION # 36
Which configuration steps will add untagged ethernet ports 1/1/1 and 1/1/2 and tagged ethernet port 1/2/1 to VLAN 10?
- A. untagged ethernet 1/1/1 to 1/1/2 vlan 10
tagged ethernet 1/2/1 vlan 10 - B. vlan 10
no tagged ethernet 1/1/1 to 1/1/2
tagged ethernet 1/2/1 - C. untagged ethernet 1/1/1 to 1/1/2
tagged ethernet 1/2/1
vlan 10 - D. vlan 10
untagged ethernet 1/1/1 to 1/1/2
tagged ethernet 1/2/1
Answer: D
NEW QUESTION # 37
When a high CPU alert about an ICX switch is triggered, which command will provide more detail on the processes taking up CPU cycles?
- A. show process
- B. show cpu histogram
- C. show cpu
- D. show cpu tasks
Answer: D
NEW QUESTION # 38
When using zero-touch stacking, which two prerequisites must be in place to ensure all devices join the stack?
(Choose two.)
- A. enable stacking on the active controller
- B. enable stacking on all devices
- C. configure each unit's management IP, VLANs, and tagging
- D. issue stack disable on intended member devices
- E. ensure units have clean configurations
Answer: B,E
Explanation:
Zero-touch stacking simplifies the process of forming a stack by automating the configuration. To ensure all devices join the stack seamlessly, the following prerequisites must be met:
* Enable Stacking on All Devices:
* Access each switch's CLI.
* Enter global configuration mode: configure terminal.
* Enable stacking by executing: stack enable.
* Save the configuration with: write memory.
* Ensure Units Have Clean Configurations:
* It's crucial that switches have default configurations to prevent conflicts during the stacking process.
* To reset a switch to its default settings:
* Enter global configuration mode: configure terminal.
* Execute the command: write erase.
* Reload the switch to apply the default configuration: reload.
* Additional Considerations:
* Ensure all switches are running compatible firmware versions to prevent software mismatches.
* Verify that stacking cables are correctly connected to facilitate proper communication between units.
References:
* For a comprehensive guide on building an ICX stack using zero-touch provisioning, consult the RUCKUS Community Forums.
NEW QUESTION # 39
Which switch model provides the most 100Gb ports?
- A. ICX7850-48FS
- B. ICX7750-32Q
- C. ICX7850-32Q
- D. ICX7850-48F
Answer: C
Explanation:
The RUCKUS ICX7850 series offers high-performance switches suitable for core and aggregation layers in enterprise networks. Among the models in this series:
* ICX7850-32Q:
* Overview:
* Designed for high-density 100GbE deployments.
* Port Configuration:
* 32 ports of 100GbE QSFP28.
* Use Case:
* Ideal for environments requiring extensive 100GbE connectivity, such as data centers or large enterprise cores.
* ICX7850-48F:
* Overview:
* Designed for high-density 25GbE deployments with additional uplink capabilities.
* Port Configuration:
* 48 ports of 1/10/25GbE SFP28.
* 8 ports of 40/100GbE QSFP28 for uplinks or stacking.
* Use Case:
* Suitable for aggregation layers where a mix of 25GbE access ports and high-speed uplinks are needed.
* ICX7750-32Q:
* Overview:
* Part of the ICX7750 series, designed for high-performance aggregation and core layers.
* Port Configuration:
* 32 ports of 40GbE QSFP+.
* Supports breakout cables for 10GbE connections.
* Use Case:
* Suitable for networks requiring 40GbE connectivity with flexibility for 10GbE access.
* ICX7850-48FS:
* Overview:
* Similar to the ICX7850-48F but includes MACsec support for enhanced security.
* Port Configuration:
* 48 ports of 1/10/25GbE SFP28 with MACsec.
* 8 ports of 40/100GbE QSFP28 for uplinks or stacking.
* Use Case:
* Ideal for secure aggregation layers requiring MACsec encryption.
References:
* For detailed specifications, refer to the ICX 7850 data sheet: ICX 7850 Data Sheet In summary, the ICX7850-32Q model offers the highest number of 100GbE ports among the listed options, making it the optimal choice for scenarios demanding extensive 100GbE connectivity.
NEW QUESTION # 40
Review the following configuration.
A RADIUS server is connected and working. However, a switch technician has forgotten the RADIUS username/password for the ICX. When RADIUS is not functioning, they expect to be able to plug into the console port and use the local username/password as a backup.
The ICX does not accept the local password.
Why can't the technician log in?
- A. Based on the AAA login command, local password will only be used if the RADIUS server is unavailable.
- B. Based on the AAA login command, local should be in front of radius for correct backup operation.
- C. Local username/password is only used for SSH and web access.
- D. The AAA web-server configuration is missing the radius keyword.
Answer: A
NEW QUESTION # 41
What are two features of Open Shortest Path First (OSPF)? (Choose two.)
- A. calculates link cost
- B. updates routes dynamically
- C. automatic redistribution of routes
- D. utilizes distance vector
- E. uses exterior gateway protocols
Answer: A,B
Explanation:
Open Shortest Path First (OSPF) is a widely used interior gateway protocol (IGP) designed for routing within an autonomous system (AS). It is a link-state routing protocol that offers several key features:
Key Features of OSPF:
* Calculates Link Cost:
* OSPF assigns a cost to each link, representing the overhead required to send packets across that link. The cost is typically based on the link's bandwidth; higher bandwidth links have lower costs.
* OSPF uses these costs to calculate the shortest path to each network destination, ensuring efficient routing.
* Updates Routes Dynamically:
* OSPF routers exchange link-state advertisements (LSAs) to share information about network topology changes.
* When a change occurs, such as a link failure, OSPF quickly propagates this information, allowing routers to update their routing tables dynamically and converge on a new optimal topology.
Clarifications on Other Options:
* Option A: Utilizes distance vector
* OSPF is a link-state protocol, not a distance vector protocol. Distance vector protocols, like RIP, use different mechanisms for route calculation.
* Option C: Automatic redistribution of routes
* OSPF does not automatically redistribute routes from other routing protocols. Route redistribution between different protocols requires manual configuration.
* Option E: Uses exterior gateway protocols
* OSPF is an interior gateway protocol (IGP) used within a single autonomous system, not an exterior gateway protocol (EGP) like BGP, which is used between autonomous systems.
References:
* OSPF Design Guide
* Understanding OSPF
NEW QUESTION # 42
What is the maximum number of software images that can be stored simultaneously on an ICX switch?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 43
At which prompt can the ping command be executed?
- A. ICX7150-C12 Router(config-if-mgmt-1)#
- B. ICX7150-C12 Router(config-if-e1000-1/1/1)#
- C. ICX7150-C12 Router#
- D. ICX7150-C12 Router(config)#
Answer: C
Explanation:
* Understanding CLI Levels:
* The ping command is used to test connectivity to other devices by sending ICMP echo requests.
* It can only be executed from the privileged EXEC mode, which is indicated by the Router# prompt.
* Why Other Prompts Don't Work:
* A. Router(config-if-mgmt-1)#: This is the interface configuration mode for the management port and does not allow execution of diagnostic commands like ping.
* B. Router(config)#: This is the global configuration mode, which is used to configure the switch but does not support diagnostic commands.
* D. Router(config-if-e1000-1/1/1)#: This is the interface configuration mode for Ethernet 1/1/1, which also does not allow execution of ping.
References:
* RUCKUS ICX CLI Guide: RUCKUS Documentation
NEW QUESTION # 44
Which two statements are true when Dynamic Host Configuration Protocol (DHCP) Snooping is enabled?
(Choose two.)
- A. All interfaces are trusted by default.
- B. DHCP snooping must be enabled globally.
- C. DHCP snooping must be enabled per interface.
- D. DHCP server interfaces should be trusted.
- E. DHCP snooping must be enabled per VLAN.
Answer: B,D
Explanation:
Dynamic Host Configuration Protocol (DHCP) Snooping is a security feature that acts as a firewall between untrusted hosts and trusted DHCP servers. It helps prevent malicious or malformed DHCP traffic by monitoring DHCP messages and filtering untrusted sources.
When configuring DHCP Snooping on RUCKUS ICX switches, consider the following:
* Global Enablement: DHCP Snooping must be enabled globally on the switch to activate the feature across the device. This is done using the following command in global configuration mode:
ip dhcp snooping
* Trusted Interfaces: Interfaces connected to legitimate DHCP servers should be configured as trusted to allow DHCP server messages to pass through. This is configured per interface:
interface ethernet 1/1/1
ip dhcp snooping trust
Replace 1/1/1 with the appropriate interface identifier.
* VLAN Configuration: DHCP Snooping must be enabled on specific VLANs where DHCP services are required. This ensures that DHCP messages are monitored within those VLANs:
NEW QUESTION # 45
Which two commands display Power over Ethernet (PoE) power budget? (Choose two.)
- A. show inline power
- B. show configuration
- C. show version
- D. show chassis
- E. show inline power detail
Answer: A,E
Explanation:
To monitor and manage the PoE power budget on RUCKUS ICX switches, the following commands are utilized:
* show inline power Command:
* Purpose: Displays a summary of the PoE status, including total power capacity, power consumption, and available power.
* Usage:
* Access the switch's command-line interface (CLI).
* Enter the command:
plaintext
Copy code
show inline power
* Output Details:
* Power Capacity: Total PoE power available on the switch.
* Power Allocations: Power consumption per port, indicating which ports are supplying power to connected devices.
* Example Output:
plaintext
Copy code
Power Capacity: Total is 124000 mWatts. Current Free is 64000 mWatts.
Power Allocations: Requests Honored 8 times
Port Admin Oper ---Power (mWatts)--- PD Type PD Class Pri Fault/
State State Consumed Allocated Error
-----------------------------------------------------------------------------
1/1/1 On On 4733 30000 2P-IEEE Class 4 3 n/a
1/1/2 On Off 6015 30000 2P-IEEE Class 4 3 n/a
(additional ports)
NEW QUESTION # 46
Which ICX model can run silently in fanless mode?
- A. ICX7550-24P
- B. ICX7150-48ZP
- C. ICX7150-48PF
- D. ICX7150-48P
Answer: D
NEW QUESTION # 47
For multicast clients to stop receiving traffic using a leave request, which protocol must run on the local subnet?
- A. PIM Dense
- B. IGMP Snooping
- C. IGMPv1
- D. IGMPv2
Answer: C
NEW QUESTION # 48
If a customer needs to implement VRRP-E on their ICX7550 units, which license needs to be applied to enable this feature?
- A. PoD
- B. MACSec
- C. L3-prem
- D. L3-Base
Answer: D
NEW QUESTION # 49
As an IP packet is routed across subnets, which value gets updated at each hop?
- A. source IP address
- B. destination MAC address
- C. destination IP address
- D. subnet mask
Answer: B
Explanation:
In network communications, when an IP packet traverses multiple subnets to reach its destination, certain header information is modified at each hop to facilitate proper routing and delivery.
* Destination MAC Address:
* Role: The Media Access Control (MAC) address is a hardware identifier used at the Data Link layer (Layer 2) of the OSI model.
* Update Process:
* As a packet moves from one router to the next, the destination MAC address is updated to reflect the MAC address of the next-hop device.
* This ensures that the packet is correctly forwarded at the Data Link layer within each local network segment.
* Explanation:
* When a router forwards a packet, it encapsulates the IP packet within a new Ethernet frame.
* The router sets the destination MAC address in this frame to the MAC address of the next- hop router or the final destination device if it is on the same local network.
* This process repeats at each hop, with each router updating the destination MAC address to ensure proper Layer 2 delivery.
* Other Header Fields:
* Destination IP Address:
* Remains unchanged throughout the packet's journey, ensuring end-to-end delivery to the correct device.
* Source IP Address:
* Also remains unchanged, identifying the original sender of the packet.
* Subnet Mask:
* Not a field within the packet header; it is used by routers to determine the network portion of an IP address but is not transmitted with the packet.
References:
* For a detailed understanding of how routers handle packet forwarding and the role of MAC addresses in this process, refer to the RUCKUS ICX Switch Configuration Guide, which provides insights into Layer 2 and Layer 3 forwarding mechanisms.
NEW QUESTION # 50
Which statement is true about Secure Shell (SSH) functionality in FastIron 08.0.95?
- A. Default login timeout is 30 seconds.
- B. Server function is disabled by default.
- C. Default SSH authentication type is RSA with 2048-bit modulus.
- D. Outbound SSH sessions are not supported.
Answer: B
Explanation:
In RUCKUS FastIron software version 08.0.95, the Secure Shell (SSH) server functionality is disabled by default for security reasons. This means that, out of the box, the device will not accept incoming SSH connections until the SSH server is explicitly enabled by the administrator.
To enable the SSH server on a RUCKUS ICX device, follow these steps:
* Access Global Configuration Mode:
enable
configure terminal
* Enable the SSH Server:
crypto key generate rsa
ip ssh server enable
* The crypto key generate rsa command generates the RSA key pair necessary for SSH encryption.
* The ip ssh server enable command starts the SSH server, allowing the device to accept incoming SSH connections.
* Save the Configuration:
write memory
This ensures that the SSH server remains enabled after a reboot.
It's important to note that while the SSH server is disabled by default, the SSH client functionality is enabled, allowing the device to initiate outbound SSH
NEW QUESTION # 51
Which two commands can be used to display the IP address of a device attached to a switch port? (Choose two.)
- A. show arp
- B. show lldp neighbor detail
- C. show mac-address all
- D. show interface brief wide
- E. show interface
Answer: A,B
NEW QUESTION # 52
What are two differences between Class of Service (CoS) and Differentiated Services Code Point (DSCP)?
(Choose two.)
- A. CoS defines priority levels and DSCP manipulates traffic according to these defined priority levels.
- B. DSCP operates at Layer 2 in OSI model, whereas CoS operates in Layer 3.
- C. DSCP defines priority levels and CoS manipulates traffic according to these defined priority levels.
- D. CoS operates at Layer 2 in OSI model, whereas DSCP operates in Layer 3.
- E. DSCP is simpler and can scale easily as the network grows. CoS becomes more complex as network demand for prioritized data increase.
Answer: D,E
Explanation:
Class of Service (CoS) and Differentiated Services Code Point (DSCP) are both mechanisms used to prioritize network traffic, but they function at different layers of the OSI model and have distinct characteristics:
* Operational Layer:
* CoS:
* Operates at Layer 2 (Data Link Layer) of the OSI model.
* Utilizes a 3-bit field within the 802.1Q VLAN tag, known as the Priority Code Point (PCP), to assign priority levels ranging from 0 to 7.
* DSCP:
* Operates at Layer 3 (Network Layer) of the OSI model.
* Uses a 6-bit field in the IP header to assign priority, allowing for up to 64 different values, providing more granularity in traffic classification.
* Scalability and Complexity:
* CoS:
* With only 8 possible priority levels, CoS offers limited granularity.
* As network demands increase, especially with diverse applications requiring different levels of service, managing and differentiating traffic with CoS can become complex due to its limited priority levels.
* DSCP:
* Provides 64 distinct priority levels, allowing for finer differentiation of traffic types.
* This granularity enables easier scalability and more straightforward management of diverse and growing network traffic demands.
References:
* For a detailed comparison between CoS and DSCP, refer to the NetworkLessons Notes on QoS CoS vs DSCP: QoS CoS vs DSCP - NetworkLessons Notes
* For an overview of Differentiated Services and traffic classification, see the article on GeeksforGeeks:
Differentiated Services (DiffServ) and Traffic Classification
Understanding these differences is crucial for network administrators when designing Quality of Service (QoS) policies to ensure efficient and effective traffic management across the network.
NEW QUESTION # 53
Which two ICX switch models are recommended for collapsed aggregation and core network designs?
(Choose two.)
- A. ICX7250
- B. ICX7550
- C. ICX7850
- D. ICX7750
- E. ICX7450
Answer: C,D
Explanation:
In network architecture, a collapsed aggregation and core design consolidates the aggregation and core layers into a single layer, simplifying the network and reducing latency. RUCKUS ICX switch models suitable for such designs include:
* ICX7850:
* Overview:
* A high-performance, stackable switch designed for enterprise aggregation and core layers.
* Key Features:
* Supports up to 32 ports of 40/100 GbE, providing high-density connectivity.
* Advanced stacking capabilities, allowing up to 12 switches to be stacked together for simplified management and scalability.
* Dual hot-swappable power supplies and fans, ensuring high availability and reliability.
* Use Case:
* Ideal for organizations seeking to implement a collapsed core architecture with high bandwidth requirements and simplified network management.
NEW QUESTION # 54
......
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