Juniper Service Provider Routing and Switching, Professional (JN0-664) - Juniper

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Question #1 Verified Q&A
Exhibit.<br />
<br />
<img src="https://examsqa.com/storage/question-images/juniper-service-provider-routing-and-switching-professional-jn0-664_page_1_Im2.jpg" alt="Exhibit" style="max-width: 100%; height: auto;" /><br />
<br />
Referring to the exhibit; the 10.0.0.0/24 EBGP route is received on R5; however, the route is being hidden. What are two solutions that will solve this problem? (Choose two.)
A On R4, add the internal IBGP interface prefixes to the BGP routing tables.
B On R4, create a policy to change the BGP next hop to 172.16.1.1 and apply it to IBGP as an export policy.
C On R4, create a policy to change the BGP next hop to itself and apply it to IBGP as an export policy.
D On R4, add the external EBGP interface's prefix to the IGP routing tables.
Question #2 Verified Q&A
You are responding to an RFP for a new MPLS VPN implementation. The solution must use LDP for signaling and support Layer 2 connectivity without using BGP The solution must be scalable and support multiple VPN connections over a single MPLS LSP The customer wants to maintain all routing<br />
for their Private network<br />
In this scenario, which solution do you propose?
A LDP Layer 2 circuit
B circuit cross-connect
C BGP Layer 2 VPN
D translational cross-connect
Correct Answer: LDP Layer 2 circuit
Explanation:
AToM (Any Transport over MPLS) is a framework that supports various Layer 2 transport types over an MPLS network core. One of the transport types supported by AToM is LDP Layer 2 circuit, which is a point-to-point Layer 2 connection that uses LDP for signaling and MPLS for forwarding. LDP Layer 2 circuit can support Layer 2 connectivity without using BGP and can be scalable and efficient by using a single MPLS LSP for multiple VPN connections. The customer can maintain all routing for their<br />
private network by using their own CE switches.
Question #3 Verified Q&A
Exhibit.<br />
<br />
<img src="https://examsqa.com/storage/question-images/juniper-service-provider-routing-and-switching-professional-jn0-664_page_3_Im3.jpg" alt="Exhibit" style="max-width: 100%; height: auto;" /><br />
<br />
user@Rie show interfaces ge-1/2/3 f unit 0 l<br />
description to-R2;<br />
family inet (<br />
address 10.1.1.1/30;<br />
family iso;<br />
100 1 unit 0 ! family inet !<br />
address 192.168.16.1/32;<br />
family iso (<br />
address 49.0001.1921.6801.6001.00;<br />
user@Rl: show protocols isis ( interface ge-1/2/3.0 |<br />
level 2 disable;<br />
interface 100.0 |<br />
level 1 disable;<br />
<br />
<img src="https://examsqa.com/storage/question-images/juniper-service-provider-routing-and-switching-professional-jn0-664_page_4_Im4.jpg" alt="Exhibit" style="max-width: 100%; height: auto;" /><br />
<br />
Referring to the exhibit, what must be changed to establish a Level 1 adjacency between routers R1 and R2?
A Remove the level 1 disable parameter under the R2 protocols isis interface lo0.0 configuration hierarchy.
B Add IP addresses to the interface ge-1/2/3 unit 0 family iso hierarchy on both R1 and R2.
C Change the level l disable parameter under the R1 protocols isis interface lo0.0 hierarchy to the level 2 disable parameter.
D Change the level 1 disable parameter under the R2 protocols isis interface ge-l/2/3.0 hierarchy to the level 2 disable parameter.
Correct Answer: Change the level 1 disable parameter under the R2 protocols isis interface ge-l/2/3.0 hierarchy to the level 2 disable parameter.
Question #4 Verified Q&A
You are asked to protect your company's customers from amplification attacks. In this scenario, what is Juniper's recommended protection method?
A destination-based Remote Triggered Black Hole
B BGP FlowSpec
C ASN prepending
D unicast Reverse Path Forwarding
Correct Answer: BGP FlowSpec
Question #5 Verified Q&A
Exhibit<br />
<br />
<img src="https://examsqa.com/storage/question-images/juniper-service-provider-routing-and-switching-professional-jn0-664_page_6_Im5.jpg" alt="Exhibit" style="max-width: 100%; height: auto;" /><br />
<br />
Which two statements about the output shown in the exhibit are correct? (Choose two.)
A There has been a VLAN ID mismatch.
B The PE is attached to a single local site.
C The connection has not flapped since it was initiated.
D The PE router has the capability to pop flow labels
Explanation:
The output is from the show l2vpn connections command on a Juniper router. This command is used to verify the status of Layer 2 VPN (L2VPN) pseudowires between Provider Edge (PE) routers.<br />
<br />
Breakdown of Key Information: Instance: vpn-A This is the L2VPN instance being monitored. Connection Status (St) The connection status is "Up", meaning the pseudowire is operational. Local Site: CE1-2 (2) The PE router is attached to a single local site (CE1-2). Uptime & Connection Flaps<br />
<br />
The output shows the last time the connection was up: Time last up: Apr 11 14:35:27 2020 The "# Up trans" value is 1, meaning this connection has been established once and has not flapped since it was initiated. VLAN ID Mismatch Check The legend includes "VM – VLAN ID mismatch", but this status is not present in the connection output. This means there is NO VLAN ID mismatch. Flow Labels The Flow Label Transmit is No, and the Flow Label Receive is No. This means the PE router does NOT have the capability to pop flow labels.

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