QUESTION: 17

You are asked to troubleshoot voice quality issues on your newly implement VoIP network. You notice that the voice packets are being dropped. You have verified that the packets are correctly marked for expedited forwarding queue.
Referring to the exhibit, what must you configure to solve the problem?

You must configure a multifield classifier to put the VoIP traffic in the correct queue.
You must configure a rewrite rule to ensure that the traffic is scheduled properly in the device.
You must configure a scheduler to allocate bandwidth to the expedited forwarding queue.
You must configure a policer to ensure that the queue is not being starved.

Answer(s): C

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QUESTION: 18

Remote branches connect to the corporate WAN through access switches. The access switches connect to access ports on the WAN distribution switch, as shown in the exhibit. L2PT has previously been configured on the tunnel Layer 2 traffic across the WAN. You decide to move the L2PT tunnel endpoints to the access switches.
When you apply the L2PT configuration to the access switches, the ports that connect the access switches to the distribution switch shut down.
Which action would solve this problem?

Configure the links between the access switches and the distribution switch as a trunk port.
Disable the BPDU block function on the access switches.
Disable the BPDU block function on the distribution switch.
Configure a GRE tunnel to encapsulate the L2PT traffic across the WAN.

Answer(s): A

Explanation:

Access interfaces in an L2PT-enabled VLAN should not receive L2PT-tunneled PDUs. If an access interface does receive L2PT-tunneled PDUs, there might be a loop in the network, and the device will shut down the interface. https://www.juniper.net/documentation/us/en/software/junos/multicast- l2/topics/topic-map/layer-2-protocol-tunneling.html

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QUESTION: 19

You want to provide Layer 2 connectivity between campus sites using Ethernet switches through a metro Ethernet service provider who is using Q-in-Q tagging on their network. Referring to the exhibit, what are two design considerations in this environment? (Choose two.)

VXLAN could be implemented on your network across this service provider network.
Each campus switch shown must have a C-Tag 300 configured.
L2PT is required on the SP network to support the spanning tree protocol.
Each campus switch shown must have S-Tag 300 configured.

Answer(s): C,D

Explanation:

https://www.juniper.net/documentation/us/en/software/junos/multicast- l2/topics/ref/statement/layer2-protocol-tunneling-edit-vlans-l2pt-ex-series.html

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QUESTION: 20

You must ensure that all routes in the 10.0.0/8 address range are not advertised outside of your AS.
Which well-known BGP community should be assigned to these addresses to accomplish this task?

no-export
no-peer
internet
no-advertise

Answer(s): A

Explanation:

For specifying the BGP community attribute only, you also can specify community-ids as one of the following well-known community names defined in RFC 1997:

no-advertise--Routes containing this community name are not advertised to other BGP peers.

no-export--Routes containing this community name are not advertised outside a BGP confederation boundary.

no-export-subconfed--Routes containing this community are advertised to IBGP peers with the same AS number, but not to members of other confederations.

llgr-stale--Adds a community to a long-lived stale route when it is readvertised.

no-llgr--Marks routes which a BGP speaker does not want to be retained by LLGR. The Notification message feature does not have any associated configuration parameters. https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/communit y-edit-routing-options.html

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