Question 1

Which feature describes the weight parameter for BGP path selection?

Options :

A :

Its value is local to the router

B :

Its value is set either locally or globally.

C :

Its default value is 0.

D :

Its value is global to the router.

Answer: A

Question 2

Refer to the exhibit. A network engineer is configuring router RB to secure BGP advertisements against route hijacking activity. RB must validate all prefixes that it receives from origin AS 200 before installing them in the BGP route table. Which configuration meets the requirement?

Options :

A :

RB(config)# router bgp 100

RB(config-router)# address-family ipv4 unicast

RB(config-router-af)# bgp bestpath origin-as use validity

B : RB(config-bgp)# router bgp 100

RB(config-bgp)# bgp origin-as validation signal ibgp

RB(config-bgp)# bgp bestpath origin-as allow invalid

C :

RB(config-bgp)# router bgp 100

RB(config-bgp)# bgp origin-as validation time off

D :

RB(config)# router bgp 100

RB(config-router)# address-family ipv4 unicast

PB(config-router-af)# bgp origin-as validation enable

Answer: D

Question 3

Refer to the exhibit.

Customer C-101 in ASN 65123 requested that the ISP blackholes a host route 198.19.44.195, to which the customer is receiving a significant amount of malicious traffic. Which configuration must the network engineer implement on the trigger router TR-1 to fulfill the request without affecting other IP destinations in the customer's block?

Options :

A : configure terminal

ip prefix-list BLACKHOLE-PERMIT seq 5 permit 198.19.44.0 le 32

ip route 198.19.44.195 255.255.255.255 Null0 tag 9090

end

B : configure terminal

ip prefix-list BLACKHOLE-PERMIT seq 5 permit 198.19.44.195

Questions & Answers PDF 5

ip route 198.19.44.195 255.255.255.255 Null0 tag 9090

end

C : configure terminal

ip prefix-list BLACKHOLE-PERMIT permit 198.19.44.0 le 32

ip route 198.19.44.195 255.255.255.255 Null0 tag 9090

end

D : Configure terminal

Answer: B

Question 4

Refer to the exhibit. A large enterprise has multiple branch offices that span several geographic regions. The

enterprise runs MPLS within the core to propagate VPNv4 routes using BGP. After a recent series of DDoS

attacks disrupted the network, a network engineer has been asked to reconfigure BGP to help mitigate future

attacks. Which configuration must the engineer apply?

Options :

A :

B :

C :

D :

Answer: B

Question 5

Refer to the exhibit:

This configuration is being applied on an IOS XR router. Which statement about this configuration is true?

Options :

A : It is used to create a subscription to specify the streaming interval

B : It is used to identify traps for SNMP polling

C : It is used to identify MIB entries and has a list of YANG models

D : It is used to create a sensor-group and has a list of YANG models for streaming

Answer: D

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