Refresh Juniper JN0-370 - An Overview 21 to 30

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2021 Jan JN0-370 practice test

Q21. What is the function of a Node device in a QFabric system? 

A. It connects endpoints such as servers or storage devices to the QFabric system. 

B. It connects all edge 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. 


Q22. By default, which two TCP/IP ports does iSCSI use for data traffic? (Choose two.) 

A. 110 

B. 860 

C. 1433 

D. 3260 

Answer: B,D 

Q23. What is the default behavior for Node groups on a QFabric system? 

A. Each Node device resides in a separate server Node group. 

B. All Node devices reside in the network Node group. 

C. All Node devices reside in a single default Node group. 

D. Each Node device resides in a separate null Node group. 


Q24. Which three statements are correct about the QFabric system control plane? (Choose three.) 

A. It discovers and manages paths. 

B. It manages FCoE-to-FC conversions. 

C. It manages Layer 2 and Layer 3 load balancing between nodes and interconnects. 

D. It discovers and provisions the system. 

E. It manages routing and switching protocols. 

Answer: A,D,E 

Q25. After initial setup on a QFabric system, you investigate a Node device interface that is operationally down. 

What are two reasons for this happening? (Choose two.) 

A. improper installation of the optical transceiver on the Node device 

B. improper configuration of the protocol family on the interface 

C. improper installation of the fabric Interconnect card 

D. improper configuration of the network Node group 

Answer: A,C 

Update JN0-370 download:

Q26. -- Exhibit -- 

Physical interface: xe-0/0/8, Enabled, Physical link is Up Interface index: 49164, SNMP ifIndex: 525, Generation: 138 Description: 

Link-level type: Ethernet, MTU: 2500, Speed: 10Gbps, Duplex: Full-Duplex, BPDU Error: None, 

MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: 

Disabled Device flags : Present Running Interface flags: SNMP-Traps Internal: 0x0 Link flags : None CoS queues : 12 supported, 12 maximum usable queues Hold-times : Up 0 ms, Down 0 ms Current address: 64:87:88:9b:8e:f8, Hardware address: 64:87:88:9b:8e:f8 Last flapped : 2012-07-04 11:24:08 PDT (5d 03:18 ago) Statistics last cleared: Never Traffic statistics: Input bytes : 1466033180627  2200 bps Output bytes : 1510947230937  119448 bps Input packets: 789356617  0 pps Output packets: 1214234000  117 pps IPv6 transit statistics: Input bytes : 0 Output bytes : 0 Input packets: 0 Output packets: 0 Input errors: Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Policed discards: 0, L3 incompletes: 0, L2 

channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0 Output errors: Carrier transitions: 23, Errors: 0, Drops: 0, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link 

CRC errors: 0, MTU errors: 0, Resource errors: 0 Egress queues: 12 supported, 5 in use Queue counters: Queued packets  Transmitted packets Dropped packets 0 best-effort 0 117720218  0 3 fcoe 0 371879636 0 4 no-loss 0 0 0 7 network-cont 0 1019890  0 8 mcast 0 723615719  18352 Queue number: Mapped forwarding classes 0 best-effort 3 fcoe 4 no-loss 7 network-control 8 mcast Active alarms : None Active defects : None MAC statistics: Receive  Transmit Total octets 1466033180627  1510947230937 Total packets 789356617  1214234000 Unicast packets 789259037  1054095012 Broadcast packets 1912  30780880 Multicast packets 95668  129358108 CRC/Align errors 0 0 FIFO errors 0 0 MAC control frames 10  0 MAC pause frames 10 0 Oversized frames 0 Jabber frames 0 Fragment frames 0 VLAN tagged frames 0 Code violations 0 MAC Priority Flow Control Statistics: Prioity : 0 0 0 Prioity : 1 0 0 Prioity : 2 0 0 Prioity : 3 0 8601486 Prioity : 4 0 0 Prioity : 5 0 3129008 Prioity : 6 0 0 Prioity : 7 0 0 Filter statistics: Input packet count 0 Input packet rejects 0 Input DA rejects 0 Input SA rejects 0 Output packet count 0 Output packet pad count 0 Output packet error count 0 CAM destination filters: 1, CAM source filters: 0 Packet Forwarding Engine configuration: Destination slot: 0 

-- Exhibit -- 

Click the Exhibit button. 

Referring to the exhibit, which two counters indicate priority flow control has been triggered for FCoE? (Choose two.) 

A. MAC Priority Flow Control Statistics: 

Priority : 5 0 3129008 

MAC statistics: Receive Transmit 

B. MAC control frames 10 0 

MAC Priority Flow Control Statistics: 

C. Priority : 3 0 8601486 

MAC statistics: Receive Transmit 

D. MAC pause frames 10 0 

Answer: C,D 

Q27. You have recently connected an aggregated interface between a server Node group and a blade chassis switch and the interface is down. 

Which three reasons would explain the interface being down? (Choose three.) 

A. The interface is using an unsupported or malfunctioning transceiver. 

B. Both sides of the connection have set LACP active. 

C. Both sides of the connection have set LACP passive. 

D. Aggregated interfaces are only supported on the network Node group. 

E. Spanning tree BPDUs have been received on the aggregated interface. 

Answer: A,C,E 

Q28. You are asked to investigate FCoE traffic congestion issues on a QFabric system. 

Which two CLI commands would you use? (Choose two.) 

A. show fip snooping 

B. show configuration class-of-service 

C. show analyzer 

D. show interfaces extensive 

Answer: B,D 

Q29. Which command executed from NW-NG-0 displays the PFE ID for all nodes in the fabric? 

A. show fabric administration inventory 

B. show virtual-chassis protocol adjacency fabric 

C. show oam fabric internal-database device 

D. show virtual-chassis status fabric 


Q30. A customer wants to set up a QFX3000-M QFabric system to consolidate existing 1 GbE networks and to provide a low latency and high performance 10 GbE network. Network engineers must consider the licenses required to setup this system. 

Which two licenses are required? (Choose two.) 

A. The license for the FCoE-to-FC gateway. 

B. The license for the QFX3000-G base QFabric software. 

C. The license for the QFX3000-M base QFabric software. 

D. The license for the QFabric Node device feature. 

Answer: C,D 

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