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Refer to the exhibit.

Click the Exhibit button.

PE-1 and PE-2 are configured with LDP-signaled pseudowires to provide connectivity between CE-1 and CE-2. You notice no connectivity exists between CE-1 and CE-2.

Referring to the exhibit, which two statements describe potential causes for this fault? (Choose two.)

AThe VC IDs are mismatched.

BThere is no LSP configured from PE-1 to PE-2.

CInterface ge-0/0/0 on PE-1 is down.

DThere is no LSP configured from PE-2 to PE-1.

Question 2

Click the Exhibit button.

Referring to the exhibit, which statement is correct?

AVPN routes are exported with the target:65512:1 and target:65512:2 route targets.

BYou cannot use the vrf-target and vrf-export statements in the same VRF.

CVPN routes with the target:65512:1 and target:65512:2 route targets are imported.

DVPN routes are exported with only the target:65512:1 route target

Answer : A

The exhibit shows the configuration of a VRF (Virtual Routing and Forwarding) instance on a Juniper PE router. Let's break down the key components:

VRF Configuration (VPN-A)

The instance type is VRF, meaning this is an L3VPN (Layer 3 VPN).

The routing instance contains a static route (10.1.0.0/16 next-hop 10.1.0.1).

The interface ge-0/0/2.0 is assigned to the VRF.

Route Distinguisher (RD): 172.17.20.1:1

VRF-Export Policy: vpn-a-export

VRF-Target: target:65512:1 (This defines which routes will be imported into the VRF).

VRF Export Policy (vpn-a-export)

The vpn-a-export policy adds two BGP communities (route targets) to exported VPN routes:

community add vpn-a-target;

community add vpn-m-target;

accept;

The vpn-a-target community corresponds to target:65512:1.

The vpn-m-target community corresponds to target:65512:2.

Policy-Options (Community Definitions)

community vpn-a-target members target:65512:1;

community vpn-m-target members target:65512:2;

This confirms that routes exported from this VRF will have BOTH target:65512:1 and target:65512:2.

Evaluating the Answer Choices

Option A: 'VPN routes are exported with the target:65512:1 and target:65512:2 route targets.'

The vpn-a-export policy explicitly adds both vpn-a-target (65512:1) and vpn-m-target (65512:2) to exported routes.

This is correct.

Option B: 'You cannot use the vrf-target and vrf-export statements in the same VRF.'

This is incorrect.

Juniper allows the use of both vrf-target and vrf-export in the same VRF:

vrf-target is used for importing routes.

vrf-export defines export policies (which can add additional route targets).

This is incorrect.

Option C: 'VPN routes with the target:65512:1 and target:65512:2 route targets are imported.'

The vrf-target target:65512:1; statement only controls importing routes.

The import policy does not include target:65512:2, so routes tagged with target:65512:2 alone would not be imported into this VRF.

This is incorrect.

Option D: 'VPN routes are exported with only the target:65512:1 route target.'

The export policy (vpn-a-export) clearly adds both 65512:1 and 65512:2.

This is incorrect.

Final Answer:

A. VPN routes are exported with the target:65512:1 and target:65512:2 route targets.

Verification from Juniper Documentation

Juniper MPLS L3VPN Configuration Guide confirms that vrf-target is used for importing, while vrf-export can be used for exporting multiple route targets.

Juniper Routing Policy Documentation states that export policies can add multiple BGP communities (route targets).

RFC 4364 (BGP/MPLS IP VPNs) defines the use of route targets for VPN route control.

Question 3

Exhibit

You want to implement the BGP Generalized TTL Security Mechanism (GTSM) on the network

Which three statements are correct in this scenario? (Choose three)

AYou can implement BGP GTSM between R2, R3, and R4

BBGP GTSM requires a firewall filter to discard packets with incorrect TTL.

CYou can implement BGP GTSM between R2 and R1.

DBGP GTSM requires a TTL of 1 to be configured between neighbors.

EBGP GTSM requires a TTL of 255 to be configured between neighbors.

Question 4

You are configuring a BGP signaled Layer 2 VPN across your MPLS enabled core network. Your PE-2 device connects to two sites within the s VPN

In this scenario, which statement is correct?

ABy default on PE-2, the site's local ID is automatically assigned a value of 0 and must be configured to match the total number of attached sites.

BYou must create a unique Layer 2 VPN routing instance for each site on the PE-2 device.

CYou must use separate physical interfaces to connect PE-2 to each site.

DBy default on PE-2, the remote site IDs are automatically assigned based on the order that you add the interfaces to the site configuration.

Question 5

You have an L2VPN connecting two CEs across a provider network. The CEs and provider network are configured with the default MTU setting. You use the ping command from one

CE to the other CE with a size of 1500 bytes.

In this scenario, which statement is correct when using the ping command?

AYou expect the ping results to be fragmented.

BYou expect a silent discard.

CYou expect an echo reply.

DYou expect an ICMP message too long error.

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