最近更新された2025年03月テストエンジン練習テストはRCNI試験問題解答！
RUCKUS Certified Networking Implementer認定サンプル問題と練習試験合格させます
質問 # 16
Which command must be configured at the interface level to honor Differentiated Services Code Point (DSCP)
-based Class of Service (CoS) on a ICX7750?
- A. trust dscp
- B. qos profile
- C. ip dscp-remark 1
- D. qos-tos map dscp-priority
正解：A
解説：
To configure a RUCKUS ICX 7750 switch to honor Differentiated Services Code Point (DSCP)-based Class of Service (CoS) at the interface level, the trust dscp command is used. This command instructs the switch to trust and utilize the DSCP values in incoming packets for Quality of Service (QoS) decisions.
Configuration 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:
enable
configure terminal
* Select the Interface to Configure:
* Specify the interface where DSCP trust should be enabled. For example, to configure Ethernet interface 1/1/1:
interface ethernet 1/1/1
質問 # 17
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 interface brief wide
- C. show interface
- D. show lldp neighbor detail
- E. show mac-address all
正解：A、D
質問 # 18
Which device will become the root in the Spanning Tree election process?
- A. the device with the highest IP address
- B. the device with the highest bridge priority value
- C. the device with the lowest bridge ID
- D. the device with root guard enabled
正解：C
解説：
In the Spanning Tree Protocol (STP), the root bridge is the central reference point for all spanning tree calculations. The election of the root bridge is determined by the bridge ID (BID), which comprises two components:
* Bridge Priority:
* A configurable value ranging from 0 to 65,535, in increments of 4,096. The default priority is typically 32,768.
* MAC Address:
* The unique hardware address of the switch.
Root Bridge Election Process:
* Lowest Bridge ID Selection:
* STP elects the switch with the lowest bridge ID as the root bridge. The bridge ID is determined by combining the bridge priority and the MAC address.
* Priority Comparison:
* Switches first compare the bridge priority values. The switch with the lowest priority value is favored.
* MAC Address Comparison:
* If multiple switches share the same priority value, the switch with the lowest MAC address becomes the root bridge.
Example:
* Switch A:
* Priority: 32,768
* MAC Address: 00:1A:2B:3C:4D:5E
* Switch B:
* Priority: 32,768
* MAC Address: 00:1A:2B:3C:4D:5F
In this scenario, both switches have the same priority. Therefore, STP compares the MAC addresses, and Switch A, with the lower MAC address, is elected as the root bridge.
Key Points:
* Enabling root guard on a device does not influence its election as the root bridge; instead, it prevents designated ports from becoming root ports.
* The device with the lowest bridge ID (combination of priority and MAC address) is elected as the root bridge.
* A lower bridge priority value increases the likelihood of a switch becoming the root bridge.
References:
* Root Bridge Election in Spanning Tree Protocol
* Spanning Tree Protocol - Part 3: Bridge ID, Priority, System ID
Sources
質問 # 19
Which three conditions allow an ARP request or response to pass a Dynamic ARP Inspection (DAI) check? (Choose three.)
- A. The IP/MAC pair appear in the DHCP binding database.
- B. Client authenticated using RADIUS on an 802.1X enabled port.
- C. There is a static reservation for the IP/MAC pair in the DHCP pool.
- D. Client authenticated using MAC authentication.
- E. A static ARP entry exists for the IP/MAC pair with the inspection flag set.
- F. Request originated on a trusted port.
正解：A、D、F
質問 # 20
Which switch model provides the most 100Gb ports?
- A. ICX7850-32Q
- B. ICX7750-32Q
- C. ICX7850-48F
- D. ICX7850-48FS
正解：A
解説：
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.
質問 # 21
Which ICX model can run silently in fanless mode?
- A. ICX7150-48ZP
- B. ICX7150-48P
- C. ICX7150-48PF
- D. ICX7550-24P
正解：C
解説：
The RUCKUS ICX7150 series includes models designed for silent operation, suitable for deployments in noise-sensitive environments such as offices or classrooms.
質問 # 22
A Wi-Fi access point is configured for management traffic on the default VLAN and a guest SSID on VLAN 10. The access point is connected to port 1/1/10.
What is the correct configuration?
- A. vlan 10
tagged ethernet 1/1/10 - B. vlan 10
no untagged ethernet 1/1/10 - C. vlan 1
no untagged ethernet 1/1/10
!
vlan 10
tagged ethernet 1/1/10 - D. vlan 1
no tagged ethernet 1/1/10
!
vlan 10
untagged ethernet 1/1/10
正解：C
質問 # 23
Which discovery protocol is enabled by default on all RUCKUS ICX platforms?
- A. FDP
- B. CDP
- C. JDP
- D. LLDP
正解：D
質問 # 24
In a core/edge network topology, which ports should have Root Guard enabled?
- A. edge ports facing the core
- B. core ports facing the edge
- C. management ports at the core
- D. route-only ports facing the WAN
正解：B
解説：
In a core/edge network topology, Root Guard is a Spanning Tree Protocol (STP) feature that prevents designated ports from becoming root ports. This ensures that the core switch remains the root bridge, maintaining a stable and predictable network topology.
Configuration Steps:
* Identify Core Ports Facing the Edge:
* Determine which ports on the core switch connect to edge switches.
* Enable Root Guard on These Ports:
* Access the core switch's configuration mode.
* For each identified port, apply the Root Guard configuration:
interface ethernet 1/1/1
spanning-tree root-guard
* Replace 1/1/1 with the actual port identifier.
Example Configuration:
arduinoICX(config)# interface ethernet 1/1/1
ICX(config-if-e1000-1/1/1)# spanning-tree root-guard
This configuration ensures that port 1/1/1 on the core switch will not accept superior BPDUs, preventing edge switches from becoming the root bridge.
質問 # 25
Which command enables Open Shortest Path First (OSPF) globally?
- A. ip ospf cost 100
- B. router ospf
- C. ip ospf area 0
- D. area 0
正解：B
解説：
To enable Open Shortest Path First (OSPF) globally on a RUCKUS ICX switch, the router ospf command is used. This command initiates OSPF routing processes, allowing the switch to participate in OSPF-based dynamic routing.
Steps to Enable OSPF Globally:
* Access Global Configuration Mode:
* Enter privileged EXEC mode and then global configuration mode:
enable
configure terminal
* Enable OSPF Routing:
* Activate the OSPF routing process:
router ospf
* Assign OSPF Parameters:
* Set the router ID (optional but recommended):
router-id <A.B.C.D>
* Specify OSPF areas and associate interfaces:
network <network-address> <wildcard-mask> area <area-id>
* Configure OSPF on Interfaces:
* Enter interface configuration mode for each interface participating in OSPF:
interface <interface-type> <interface-number>
ip ospf area <area-id>
* Save Configuration:
* Ensure the configuration persists after a reboot:
write memory
Example Configuration:
To configure OSPF with a router ID of 1.1.1.1 and include the network 192.168.1.0/24 in area 0:
configure terminal
router ospf
router-id 1.1.1.1
network 192.168.1.0 0.0.0.255 area 0
exit
interface ethernet 1/1/1
ip ospf area 0
exit
write memory
Considerations:
* Licensing: Ensure the switch has the appropriate Layer 3 license to support OSPF.
* Compatibility: Verify that the FastIron software version supports OSPF.
* Network Planning: Properly design OSPF areas and hierarchies to optimize routing efficiency.
References:
* Ruckus FastIron Layer 3 Routing Configuration Guide, 08.0.91
* Ruckus FastIron Command Reference Guide, 08.0.70
質問 # 26
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
正解：C
質問 # 27
Which two commands display Power over Ethernet (PoE) power budget? (Choose two.)
- A. show inline power detail
- B. show configuration
- C. show inline power
- D. show version
- E. show chassis
正解：A、C
質問 # 28
Which command enables global IPv6 capabilities?
- A. ipv6 multicast
- B. ipv6 unicast-routing
- C. ipv6 nd proxy
- D. ipv6 dhcp6-server enable
正解：B
解説：
To enable IPv6 functionality on a RUCKUS ICX switch, you must activate IPv6 unicast routing globally.
This allows the switch to forward IPv6 packets and participate in IPv6 routing.
Steps to Enable IPv6 Unicast Routing:
* Access the Switch's Command-Line Interface (CLI):
* Connect to the switch via console, SSH, or Telnet.
* Enter privileged EXEC mode:
plaintext
Copy code
enable
* Enter Global Configuration Mode:
* Switch to global configuration mode:
plaintext
Copy code
configure terminal
* Enable IPv6 Unicast Routing:
* Activate IPv6 unicast routing:
ipv6 unicast-routing
* Configure IPv6 Addresses on Interfaces (Optional):
* Assign IPv6 addresses to the desired interfaces:
interface ethernet 1/1/1
ipv6 address 2001:db8::1/64
* Verify the Configuration:
* Exit to privileged EXEC mode and display the running configuration to confirm:
end
show running-config
References:
* For detailed information on configuring IPv6 addresses, refer to the RUCKUS FastIron Layer 3 Routing Configuration Guide: Configuring a global or site-local IPv6 address with a manually configured interface ID By following these steps, you enable the switch to handle IPv6 traffic, facilitating IPv6 communication within your network.
質問 # 29
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 cpu
- B. show process
- C. show cpu tasks
- D. show cpu histogram
正解：A
質問 # 30
Which ICX model has eight integrated QSFP28 ports?
- A. ICX7550-48F
- B. ICX7750-48F
- C. ICX7650-48F
- D. ICX7850-48F
正解：C
質問 # 31
What is the maximum distance between ICX devices in a stack?
- A. 3 meters
- B. 40 kilometers
- C. 1 kilometer
- D. 9 meters
正解：B
解説：
RUCKUS ICX switches support stacking over both copper and fiber connections, allowing for flexible deployment across various distances:
* Copper Stacking Cables:
* Maximum Distance:
* Up to 5 meters using active direct-attach copper (DAC) cables.
* Use Case:
* Suitable for stacking switches within the same rack or in close proximity.
* Fiber-Optic Stacking Cables:
* Maximum Distance:
* Up to 40 kilometers using appropriate optical transceivers and single-mode fiber.
* Use Case:
* Ideal for stacking switches located in different buildings or across a campus environment.
References:
* For detailed information on stacking distances and supported optics, refer to the FastIron stacking distances and optics guide: FastIron stacking distances and optics by device By utilizing fiber-optic connections with appropriate transceivers, ICX switches can be stacked over substantial distances, providing flexibility in network design and deployment.
質問 # 32
What is one advantage of the supportsave command versus the show tech-support command?
- A. Generates automatically after a system crash.
- B. Allows the transfer of collected data to TFTP.
- C. Uploads directly to RUCKUS support.
- D. Uses fewer CPU cycles during execution.
正解：B
解説：
* Comparison Between supportsave and show tech-support:
* show tech-support: Generates diagnostic information and displays it on the CLI. It does not directly save or transfer the output.
* supportsave: Gathers similar diagnostic data but also allows the data to be transferred to a remote server, such as via TFTP, for easier analysis.
* Why Other Options Don't Apply:
* A. Uses fewer CPU cycles during execution: Both commands are similar in terms of resource usage.
* C. Uploads directly to RUCKUS support: Data transfer to RUCKUS support requires manual intervention.
* D. Generates automatically after a system crash: Neither command generates data automatically; both require user execution.
References:
* ICX Switch SupportSave Command Guide: RUCKUS Documentation
質問 # 33
Which command could be used to find the system name of an attached device?
- A. show lldp neighbors
- B. show chassis
- C. show inline power
- D. ping
正解：B
質問 # 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. ICX devices do not support IPv4 and IPv6 addresses configured on the same interface.
- B. The interface will transmit and receive both IPv4 and IPv6 traffic simultaneously.
- C. The ipv6 enable command must also be configured at the interface level.
- D. ICX devices only support dual-stacked IPv4 and IPv6 configuration on a VE interface.
正解：B
解説：
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.
質問 # 35
When running FastIron SPS08095e code, which step is required to define static routes?
- A. Upgrade to version SPS08095h or later.
- B. Run the UFI code image for GZR08095h.
- C. Install the L3-prem license.
- D. Change the ICX image version to SPR08095e.bin.
正解：D
質問 # 36
Which command must be configured at the interface level to honor Differentiated Services Code Point (DSCP)-based Class of Service (CoS) on a ICX7750?
- A. trust dscp
- B. qos profile
- C. ip dscp-remark 1
- D. qos-tos map dscp-priority
正解：A
質問 # 37
Which command could be used to find the system name of an attached device?
- A. show lldp neighbors
- B. show inline power
- C. ping
- D. show chassis
正解：A
解説：
The Link Layer Discovery Protocol (LLDP) is a vendor-neutral protocol used by network devices to advertise their identity and capabilities to neighbors on a local network. In RUCKUS ICX switches, the show lldp neighbors command displays information about directly connected devices, including their system names.
Command Usage:Copy code
show lldp neighbors
Output Example:
Local Port Neighbor MAC System Name
----------- ------------- -----------
1/1/1 00:11:22:33:44:55 Device_A
1/1/2 66:77:88:99:AA:BB Device_B
In this example, the System Name column lists the names of devices connected to the local switch ports. This information is particularly useful for network administrators to identify and manage connected devices efficiently.
For more detailed information, including IP addresses and port descriptions, the following command can be used:
show lldp neighbors detail
Output Example:Copy code
Local Port: 1/1/1
Neighbor MAC: 00:11:22:33:44:55
System Name: Device_A
Port Description: GigabitEthernet1/0/1
System Description: Vendor Model XYZ
Management Address: 192.168.1.10
This detailed output provides comprehensive information about each connected device, aiding in network management and troubleshooting.
It's important to note that LLDP must be enabled on the switch and the connected devices for this information to be available. By default, LLDP is enabled on RUCKUS ICX switches.
質問 # 38
......
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