QFabric, Specialist (JNCIS-QF)
Question No: 31
Which three Qfabric system hardware architectures help ensure high availability and minimize downtime? (Choose three.)
redundant Director devices
redundant network Node groups
redundant Interconnect devices
redundant control plane devices
redundant Director groups
Question No: 32
What must happen for QFabric system RVIs to become active?
A network Node group is configured on the RVI VLAN.
An operational Layer 2 interface is associated with the RVI VLAN.
A server Node group is configured on the RVI VLAN.
A Layer 3 interface is configured on the RVI VLAN.
Question No: 33
What is the function of an Interconnect device in a QFabric system?
It connects endpoints such as servers or storage devices to the QFabric system.
It connects all Node devices in the QFabric system and directs traffic between them.
It manages, monitors, and maintains all components in the QFabric system.
It supports the control plane network and facilitates communications between QFabric system devices.
Question No: 34
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.)
The license for the FCoE-to-FC gateway.
The license for the QFX3000-G base QFabric software.
The license for the QFX3000-M base QFabric software.
The license for the QFabric Node device feature.
Question No: 35
You have just configured a QFabric system as a transit FCoE switch between a server and an FCoE gateway device. The server#39;s converged network adapter state is showing as quot;Deadquot;.
Which two commands will assist in troubleshooting the issue? (Choose two.)
show dcbx neighbors
show fip snooping
show fibre-channel flogi nport
show hba connections
Question No: 36
According to Juniper Networks recommendations, specific ports have been reserved on the EX4200 switches to connect to each of the QFX3000-M QFabric system device types.
Which ports connect to the Interconnect devices?
uplink port 0 and port 1
Question No: 37
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.)
You must explicitly enable ports 4-7 as uplink ports on the Node devices.
You must use QFX3500 Node devices.
You must use QFX3600 Node devices.
You must explicitly enable ports 13-16 as uplink ports on the Node devices.
Question No: 38
You notice that Fibre Channel over Ethernet (FCoE) traffic is dropped in a QFabric system. What are two reasons why this is happening? (Choose two.)
The FCoE traffic is not classified correctly at the egress interface.
The FCoE traffic is not classified correctly at the ingress interface.
Priority-based flow control (PFC) is not enabled.
Data center bridging exchange (DCBx) is enabled.
Question No: 39
– Exhibit – On node2:
user@node2gt; show ethernet-switching table Ethernet-switching tablE.119 entries, 104 learned VLAN MAC address Type Age Interfaces vlan200 * Flood – N2:All-members
vlan200 00:00:02:00:00:01 Learn 0 N2:ae0.0
vlan200 00:00:02:00:00:02 Learn 0 N2:ae0.0
vlan200 00:00:02:00:00:03 Learn 0 N2:ae0.0
vlan200 00:00:02:00:00:06 Learn 0 N2:ae0.0
user@node5gt; show ethernet-switching table Ethernet-switching tablE.119 entries, 104 learned VLAN MAC address Type Age Interfaces vlan200 * Flood – N2:All-members
vlan200 00:00:05:00:00:01 Learn 0 N5:ae0.0
vlan200 00:00:05:00:00:02 Learn 0 N5:ae0.0
vlan200 00:00:05:00:00:03 Learn 0 N5:ae0.0
vlan200 00:00:05:00:00:06 Learn 0 N5:ae0.0
user@node5gt;show route forwarding-table family ethernet-switching vlan vlan200–qfabric Routing tablE.default.ethernet-switching
Destination Type RtRef Next hop Type Index NhRef Netif 7, * user 0 comp 1676 2
7, * intf 0 rslv 1650 1
7, 00:00:02:00:00:01 user 0 comp 1673 51
7, 00:00:02:00:00:02 user 0 comp 1673 51
7, 00:00:02:00:00:03 user 0 comp 1673 51
7, 00:00:02:00:00:05 user 0 comp 1673 51
7, 00:00:02:00:00:06 user 0 comp 1673 51
user@qfabricgt;show route fabric table default.bridge.0 bridge-route-mac-address
default.bridge.0: 110 destinations, 165 routes (110 active, 0 holddown, 0 hidden)
= Active Route, – = Last Active, * = Both
– Exhibit –
Click the Exhibit button.
Referring to the exhibit, Host A on Node device node2 and Host B on Node device node5 are on the same VLAN but Host A cannot ping Host B.
Host A#39;s MAC address is 00:00:02:00:00:01. Host B#39;s MAC address is 00:00:05:00:00:01.
What is causing this problem?
Host B is not connected to Node device node5.
The MAC address of Host A is not learned in node2.
The MAC address of Host A is not in the RPDf table of Node device node5.
The MAC address of Host B is not learned in node5.
Question No: 40
– Exhibit –
Click the Exhibit button.
Server B is attached to the yellow VLAN. Server C is attached to the pink VLAN. Referring to the exhibit, which statement is true about server B?
Server B can communicate with Server C directly, because both devices are on SNG-1.
Server B can communicate with Server C through the Director group.
Server B can communicate with Server C if RVIs for the associated subnets are defined.
Server B can communicate with Server C through the fabric manager Routing Engine.
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