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2021 Jan JN0-370 free question

Q31. Whenever you connect a Layer 2 switch to the xe-0/0/0 interface of the LC2 Node device in the server Node group of a QFabric system, the interface xe-0/0/0 on LC2 is disabled. 

What is causing this problem? 

A. The xe-0/0/0 interface on the LC2 Node device is not configured for family Ethernet switching. 

B. The LC2 Node device is not connected to the QFabric system. 

C. Interfaces on the server Node group can connect only to servers. 

D. The interface xe-0/0/0 of the LC2 Node device detects incoming BPDUs from a Layer 2 switch. 

Answer:


Q32. You need to determine whether there have been core dumps from the fabric administrator within the last 24 hours. 

Which command should you use? 

A. show system core-dumps component FM-0 

B. show system core-dumps | match last day 

C. show system core-dumps 

D. find /var/ -ctime -1 -a -iname "*core*" 

Answer:


Q33. -- Exhibit -- [edit interfaces] user@qfabric# show LC2:xe-0/0/20 { 

mtu 2100; 

unit 0 { 

family ethernet-switching { 

port-mode trunk; 

vlan { 

members v30-FCoE; 

native-vlan-id 11; 

} } } 

-- Exhibit -- 

Click the Exhibit button. 

Referring to the exhibit, you have been informed that FCoE packets are not being passed through the QFabric system. 

What is causing the problem? 

A. The MTU is too small. 

B. The protocol family is incorrect. 

C. The port mode is incorrect. 

D. The unit ID is incorrect. 

Answer:


Q34. -- 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:


Q35. What are two architectural goals of QFabric systems? (Choose two.) 

A. to provide a high speed WAN connection to the data center 

B. to view the entire system as a single administrative entity 

C. to eliminate the need to use security devices in the network 

D. to provide clear separation between control and data traffic for maximum scalability 

Answer: A,C 


Improve JN0-370 practice test:

Q36. -- 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:


Q37. An administrator of a QFabric system needs to know if LLDP is sent out to a neighbor. 

Which command should you use from a Node device? 

A. monitor interface traffic 

B. monitor traffic interface xe-0/0/2 

C. show interface xe-0/0/2 extensive 

D. show interface ethernet-switching 

Answer:


Q38. You are cabling the data plane of a QFabric system using QFX3008-I Interconnect devices. You require an uplink capacity of 320 Gbps from each Node device. 

Which two statements are true? (Choose two.) 

A. You must explicitly enable ports 4-7 as uplink ports on the Node devices. 

B. You must use QFX3500 Node devices. 

C. You must use QFX3600 Node devices. 

D. You must explicitly enable ports 13-16 as uplink ports on the Node devices. 

Answer: A,C 


Q39. What is the function of a Director 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:


Q40. -- Exhibit – -- Exhibit -- 

Click the Exhibit button. 

Referring to the exhibit, you want to ensure that the QFabric system will not become the root bridge and that the connection from the QFabric system to S-2 will be selected as the root port. 

Which configuration will satisfy the requirements? 

A. [edit protocols rstp] 

user@qfabric# show 

bridge-priority 4k; 

interface Node-0:xe-0/0/24.0 { 

priority 128; 

cost 1; 

interface Node-1:xe-0/0/24.0 { 

priority 16; 

cost 5000; 

[edit protocols rstp] 

B. user@qfabric# show 

bridge-priority 32k; 

interface Node-0:xe-0/0/24.0 { 

priority 16; 

cost 5000; 

interface Node-1:xe-0/0/24.0 { 

priority 128; 

cost 1; 

[edit protocols rstp] 

C. user@qfabric# show 

bridge-priority 4k; 

interface Node-0:xe-0/0/24.0 { 

priority 16; 

cost 5000; 

interface Node-1:xe-0/0/24.0 { 

priority 128; 

cost 1; 

[edit protocols rstp] 

D. user@qfabric# show 

bridge-priority 32k; 

interface Node-0:xe-0/0/24.0 { 

priority 128; 

cost 1; 

interface Node-1:xe-0/0/24.0 { 

priority 16; 

cost 5000; 

Answer:



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