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2021 Nov JN0-370 training
Q1. What is the function of an Interconnect device in a QFabric system?
A. It connects endpoints such as servers or storage devices to the QFabric system.
B. It connects all Node devices in the QFabric system and directs traffic between them.
C. It manages, monitors, and maintains all components in the QFabric system.
D. It supports the control plane network and facilitates communications between QFabric system devices.
Answer: A
Q2. You are asked to configure a link aggregation group (LAG) between a QFabric system and an attached MX Series router. This LAG must support Layer 3 communications and must be associated with multiple VLANs.
Which configuration approach should you use?
A. Configure a Layer 3 LAG with the native-vlan option while ensuring that all desired VLANs are part of the native VLAN.
B. Configure a Layer 2 LAG as a trunk port for the desired VLANs ensuring that the required RVIs are defined and associated with those VLANs.
C. Configure a Layer 3 LAG with the vlan-tagging option with the required logical units and the parameters needed to support the desired VLANs.
D. Configure a Layer 2 LAG with the vlan-tagging and inet options along with the required logical units and parameters needed to support the desired VLANs.
Answer: B
Q3. After changing the Node group designation for a Node device, you notice that the Node device is disconnected.
What is causing the problem?
A. An incorrect command was issued on the fabric administrator.
B. Moving the Node device from one group to another group causes the Node device to reboot.
C. The Node device needs a manual reboot after changing the Node group designation.
D. Server Node groups must retain the system default naming convention.
Answer: B
Q4. -- Exhibit -- QFabric system:
LC0:xe-0/0/1 {
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members all;
}
native-vlan-id 64;
}
}
}
Switch A:
xe-0/0/1 {
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members all;
}
native-vlan-id 64;
}
}
)
-- Exhibit -- Click the Exhibit button.
Referring to the exhibit, Node device LC0 is connected to switch A on interface xe-0/0/1. Switch A is not receiving untagged packets from LC0.
What is causing the problem?
A. Node device LC0 sends untagged packets but these packets are dropped on ingress by switch.
B. Node device LC0 drops untagged packets before sending to switch A.
C. Node device LC0 sends all packets with a VLAN tag.
D. Node device LC0 sends untagged packets with CRC errors to switch A.
Answer: C
Q5. A user account has the remote-debug-permission parameter set but the user is unable to log in to any devices.
What is causing this problem?
A. The user is only configured with the qfabric-user class.
B. The user is not a root user in the QFabric system.
C. The user is not a superuser in the QFabric system.
D. The Node devices have not been configured with the correct users.
Answer: A
Far out JN0-370 free practice questions:
Q6. Which two statements are true about the Fabric Shortest Path First protocol? (Choose two.)
A. It calculates best paths between fabric switches.
B. It directly interacts with the OSPF protocol.
C. It automatically recalculates best paths upon a link failure.
D. It connects a QFabric system to external routers.
Answer: B,D
Q7. For which type of Node group does the Routing Engine function reside on a Director device?
A. redundant server Node group
B. server Node group
C. network Node group
D. redundant network Node group
Answer: C
Q8. -- Exhibit --
[edit]
user@qfabric# show chassis
node-group NW-NG-0 {
aggregated-devices {
ethernet {
device-count 1;
}
}
}
node-group RSNG-1
{ aggregated-devices
{ ethernet {
device-count 48;
}
}
}
[edit]
user@qfabric# show interfaces
...
NW-NG-0:ae3 {
unit 0 {
family ethernet-switching {
}
}
}
RSNG-1:ae47 {
unit 0 {
family ethernet-switching {
}
}
}
[edit]
user@qfabric# show vlans
v50 {
vlan-id 50;
interface {
Node-0:ge-0/0/12.0;
RSNG-1:ae47.0;
}
}
v51 {
vlan-id 51;
interface {
Node-1:ge-0/0/12.0;
RSNG-1:ae47.0;
}
}
-- Exhibit --
Click the Exhibit button.
Referring to the exhibit, which statement is true?
A. The configuration file will commit and will treat RSNG-1:ae47 as an access port associated with the default VLAN.
B. The configuration file will not commit because of the limited number of aggregated interfaces associated with the network Node group.
C. The configuration file will not commit because RSNG-1:ae47 is configured as an access port and is associated with multiple VLANs.
D. The configuration file will commit but NW-NG-0:ae3 will not be activated because of the current number of aggregated interfaces associated with the network Node group.
Answer: C
Q9. A QFabric system continuously drops Layer 3 inter-VLAN routed traffic. Host 1 is connected to SNG-1 on VLAN 10 and Host 2 is connected to SNG-2 on VLAN 20. You determine that SNG-1 does not have the ARP entry for Host 2, but the ARP entry is present on the network Node group.
Which two statements are correct? (Choose two.)
A. BGP peering between SNG-1 and the fabric control Routing Engines is down.
B. SNG-1 is not receiving the host route from the fabric control Routing Engines.
C. SNG-2 is not advertising the host route to the fabric control Routing Engines.
D. The Node devices connecting to Host 2 and Host 1 are not part of the same redundant server Node group.
Answer: A,B
Q10. When bringing up a QFX3000-M QFabric system control plane network, which three actions should be performed? (Choose three.)
A. Confirm data plane connections on EX Series switches are up.
B. Apply site-specific configuration to EX Series switches.
C. Verify connectivity and state of LAG between EX Series switches.
D. Configure the network Node group.
E. Power on the EX Series switches.
Answer: B,C,E