350-501 Online Practice Questions and Answers

Why do Cisco MPLS TE tunnels require a link-state routing protocol?

A. The link-state database provides segmentation by area, which improves the path-selection process.

B. The link-state database provides a data repository from which the tunnel endpoints can dynamically select a source ID.

C. Link-state routing protocols use SPF calculations that the tunnel endpoints leverage to implement the tunnel.

D. The tunnel endpoints use the link-state database to evaluate the entire topology and determine the best path.

Refer to the exhibit

R1 is connected to two service providers and is under a DDoS attack.

Which statement about this design is true if URPF in strict mode is configured on both interfaces?

A. R1 drops all traffic that ingresses either interface that has a FIB entry that exits a different interface.

B. R1 drops destination addresses that are routed to a null interface on the router.

C. R1 permits asymmetric routing as long as the AS-PATH attribute entry matches the connected AS.

D. R1 accepts source addresses on interface gigabitethernet0/1 that are private addresses.

A network engineer is implementing NetFlow to observe traffic patterns on the network. The engineer is planning to review the patterns to help plan future strategies for monitoring and preventing congestion as the network grows. If the captures must include BGP next-hop flows, which configuration must the engineer apply to the router?

A. ip cefip flow-export version 5 bgp-nexthopip flow-export destination 192.168.1.1 9995interface gigabitethernet 1/0/1

ip flow egress

B. ip cefip flow-export version 9 bgp-nexthopip flow-export destination 192.168.1.1 9996interface gigabitethernet 1/0/1

ip flow ingress

C. ip cefip flow-export version 5ip flow-export destination 192.168.1.1 9995interface gigabitethernet 1/0/1

ip flow ingress

cdp enable

D. no ip cefip flow-export version 9ip flow-export destination 192.168.1.1 9996interface gigabitethernet 1/0/1

ip flow ingress

ip flow egress

How does Inter-AS Option-A function when two PE routers in different autonomous systems are directly connected?

A. The two routers share all Inter-AS VPNv4 routes and redistribute routes within an IBGP session to provide end-to-end reach.

B. The two routers establish an MP-EBGP session to share their customers' respective VPNv4 routes.

C. The two routers treat one another as CE routers and advertise unlabeled IPv4 routes through an EBGP session.

D. The two routers share VPNv4 routes over a multihop EBGP session and set up an Inter-AS tunnel using one another's label.

What is the function of Cisco NFV infrastructure platform?

A. It does not have a security audit feature.

B. It does not offer high availability.

C. It offers consistent performance.

D. It offers decentralized logging.

Refer to the exhibit. A network engineer received a complaint about these problems in OSPF stub area 100:

The Ethernet link is down between routers RX and RY because the fiber was cut.

CE site A traffic to the hub site is being dropped.

Which action resolves these issues?

A. Change the OSPF area 100 type to stub on RZ.

B. Set the OSPF MTU to 1500 on the link between RX and RZ.

C. Set the OSPF authentication type to MD5 between RX and RY.

D. Change the OSPF priority to 100 on the Interfaces that connect RX and RY.

Refer to the exhibit. An engineer must implement a traceroute operation to verify the R1 point-to-multipoint LSP connections. The traceroute operation must return all labels and hop-by-hop IP addresses for destinations 10.20.0.1, 10.30.0.1, and 10 40.0.1, and the maximum number of hops is 4. Which command must be executed to meet the requirements?

A. traceroute mpls ipv4 10.30.0.1/32 fec-type generic

B. traceroute mpls ipv4 10.20.0.1/32 ttl 4

C. traceroute mpls traffic-eng tunnel-mte 10 ttl 4

D. traceroute mpls traffic-eng tunnel-mte 10 responder-id 10.40.0.1

Refer to the exhibit. To optimize network operations, the senior architect created this Python 3.9 script for network automation tasks and to leverage Ansible 4.0 playbooks. Devices in the network support only RFC 2617-based authentication. What does the script do?

A. The script performs a configuration sanity check on the device with IP address 172.168.211.65 via HTTP and returns an alert if the payload field fails to match.

B. The script leverages REST API calls and configures interface GigabitEthernet0/1 with IP address 10.1.131.112/30.

C. The script parses the JSON response from the router at IP address 172.168 211.65 and checks if the interface GigabitEthernet0/1 with IP address 10.1.131.112 exists on the router.

D. The script logs in via SSH and configures interface GigabitEthernet0/1 with IP address 10 1.131.112/30.

Refer to the exhibit. Which part of the diagram will host OpenStack components?

A. UCS Series

B. Aggregation

C. Access

D. Core

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

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

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

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

E. Implement BGP PIC core functionality on routers R2 and R3.

The NOC engineer in a service provider network must configure an SNMP community on switch SW with these security attributes:

Event messages must be authenticated with the MD5 algorithm and encrypted. The remote user name for the SNMP server at 172.16.10.1 is AuthNocUser. Which configuration must the engineer apply to the switch?

A. Option A

B. Option B

C. Option C

D. Option D

Which multicast feature listens multicast conversations maintaining a map in order to control which ports receive specific multicast traffic?

A. Bidirectional PIM

B. Source Specific Multicast

C. PIM assertion

D. IGMP snooping

In a L2VPN service, customer CE sends frames to PE1 using a CoS making value of 3. However , the remote CE receives those frames from PE2 with a CoS marking value of 0. Which description of this behavior is true?

A. Egress PE2 is not configured with an outbound policy-map facing CE2 to preserve CoS marking

B. Egress PE2 is marking EXP 0 upon label imposition

C. Egress PE2 is not configured with mpls Ldp explicit-null command

D. Ingress PE1 is remarking the CoS frame received from CE1 with valuye of 0

Refer to the exhibit.

An engineer began to configure LDP between R1 and R2, but R1 and R2 cannot yet establish an LDP TCP connection. Which additional task must be completed to finish the implementation?

A. Configure the mpls Idp neighbor 172.16.0.1 password command on R1

B. Configure the mpls Idp neighbor 10.0.12.1 password command on R1

C. Configure the no mpls Idp password option 1 command on R2

D. Configure the no mpls Idp password option 1 command on R1

Refer to the exhibit.

A network engineer is implementing a standard customer route-policy on ASBR1 with these requirements:

1.

It must accept only customer-assigned prefixes

2.

It must preserve customer advertised BGP communities

3.

It must set the local-preference to 110 for all prefixes

4.

It must attach the ORIGINATION-PE and LOCAL-CITY communities to all accepted prefixes.

Which route policy must the engineer implement on ASBR1 to satisfy the requirements?

A. Option A

B. Option B

C. Option C

D. Option D