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350-501 Exam Dumps - Implementing and Operating Cisco Service Provider Network Core Technologies (350-501 SPCOR)

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Question # 137

Refer to the exhibit An engineer at ISP C is configuring a new interconnection with ISPs A and B using the BGP protocol After the initial configuration the engineer noticed high memory usage and an abnormally large LIB table on router R2 Which two actions must the engineer take on R2 to minimize memory usage? (Choose two.)

A.

Configure Extended ACL 101 with accepted prefixes.

B.

Confiure the mpls idp neighbor 11.11.11.11 labels accept1 command.

C.

Configure Standard ACL 1 with accepted prefixes.

D.

Configure the mpls idp neighbor 1.1.1.1 labels accept 101 command.

E.

Configure the mpls idp neighbor 21.21.21.21 labels accept 101 command.

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Question # 138

Refer to the exhibit.

What is the effect of this configuration?

A.

R1 supports a graceful restart operation on the peer, even if graceful restart is disabled on the peer.

B.

R1 supports a peer that is configured for LDP SSO/NSF as the peer recovers from an outage.

C.

R1 failovers only to a peer that is configured for LDP SSO/NSF.

D.

R1 failovers to any peer.

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Question # 139

Refer to the exhibit. Routers R1 and R2 support traffic between multiple departments at a company's remote office and exchange routes using OSPF. The link between R1 and R2 has been providing inconsistent performance, particularly during times of peak usage. To help identify the cause, an engineer was asked to implement BFD to detect failures on the link. Which task must the engineer perform?

A.

Configure the session parameters individually on each interface.

B.

Configure IS-IS to share routes between the routers.

C.

Change the network between R1 and R2 to a /30 prefix.

D.

Configure echo mode on both devices to support asymmetry.

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Question # 140

Refer to the exhibit. The radio network and packet core are using the route RX-RZ-RB to establish communication. The LDP session between 10.10.10.5 and 10.10.10.1 is experiencing link flapping at random intervals for 30-45 seconds each time. A network engineer must protect the LDP session and improve MPLS traffic convergence. Which action meets these requirements?

A.

Enable IGP_LDP sysnc on RZ and RX

B.

Add session protection duration 60 for peer_acl_1 under the MPLS LDP instance on RZ.

C.

Attach peer_acl_1 in for session protection duration 1 on RX.

D.

Configure Peer_acl_2 on RX and allow IP address 10.10.10.6 in LDP

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Question # 141

What is the primary role of a BR router in a 6rd environment?

A.

It provides connectivity between end devices and the IPv4 network.

B.

It embeds the IPv4 address in the 2002::/16 prefix.

C.

It connects the CE routers with the IPv6 network.

D.

It provides IPv4-in-IPv6 encapsulation

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Question # 142

Refer to the exhibit:

If router A is the RP, which PIM mode can you configure so that devices will send multicast traffic toward the RP?

A.

PIM-SM

B.

PI MM-DM

C.

BIDIR-PIM

D.

PIM-SSM

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Question # 143

Refer to the exhibit. Tier 1 ISP A purchased several Tier 2 ISPs to increase their customer base and provide more regional coverage. ISP A plans to implement MPLS services in the access layer, with scalability up to 100.000 devices In one packet network and service recovery up to 50 ms. The network architect decided to use different independent IGP and LDP domains and interconnect LSPs that are based on RFC 3107. Which two actions must the network engineer perform to meet the requirements? (Choose two.)

A.

Implement BGP PIC core functionality on routers R2 and R3.

B.

Configure three OSPF areas, with Area 0 In the core domain, and Areas 2 and 3 in the aggregation domain.

C.

Implement BGP connectivity between routers R1 and R4 with VPNv4 address family enabled.

D.

Implement BGP inline RR functionality with next-hop-self capabilities on routers R2 and R3.

E.

Implement the IS-IS routing protocol on the access domain.

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Question # 144

Refer to the exhibit. The NOC is configuring PE router R4 for BGP-originated traffic. R4 is connected to a CE device at a customer location. The customer requires:

    BGP peers must establish a neighborship with NSR and NSF capability.

    BGP must maintain state with the CE and provide continuous forwarding during ISSU and RP switchover events.

Which action meets the NSR requirement on PE routers?

A.

Set the BGP administrative distance to 15 for BGP neighbors.

B.

Set the BGP restart-time to 120 seconds.

C.

Set the BGP peering with ha-mode sso.

D.

Set the BGP stalepath-time to 360 seconds.

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