Cisco® 350-501 Exam Practice Questions (P. 1)
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Question #1
DRAG DROP -
Drag and drop the OSs from the left onto the correct descriptions on the right.
Select and Place:

Drag and drop the OSs from the left onto the correct descriptions on the right.
Select and Place:

Correct Answer:
Reference:
https://specialties.bayt.com/en/specialties/q/276369/what-is-the-key-difference-between-ios-ios-xe-and-ios-xr-for-cisco-devices/

Reference:
https://specialties.bayt.com/en/specialties/q/276369/what-is-the-key-difference-between-ios-ios-xe-and-ios-xr-for-cisco-devices/
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Question #2

Refer to the exhibit. P3 and PE4 are at the edge of the service provider core and serve as ABR routers. Aggregation areas are on either side of the core.
Which statement about the architecture is true?
- ATo support seamless MPLS, the BGP route reflector feature must be disabled.Most Voted
- BIf each area is running its own IGP, BGP must provide an end-to-end MPLS LSP.
- CIf each area is running its own IGP, the ABR routers must redistribute the IGP routing table into BGP.
- DTo support seamless MPLS, TDP must be used as the label protocol.
Correct Answer:
B
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9600/software/release/16-12/configuration_guide/mpls/b_1612_mpls_9600_cg/ configuring_seamless_mpls.html
B
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9600/software/release/16-12/configuration_guide/mpls/b_1612_mpls_9600_cg/ configuring_seamless_mpls.html
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Question #3
Which component is similar to an EVPN instance?
- Arouter distinguisher
- BMPLS label
- CIGP router ID
- DVRF
Correct Answer:
D
D

In the context of EVPN, a VRF (Virtual Routing and Forwarding) instance is conceptually similar to an EVPN instance. This is because both VRF and EVPN segregate network traffic in a similar manner by creating isolation between different sets of network routes, allowing for the implementation of multi-tenancy in network architectures. VRFs essentially act as separate virtual routers on the same physical hardware. This separation aligns closely with how EVPN operates, making VRF the correct analogy in the provided options.
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Question #4
Why do Cisco MPLS TE tunnels require a link-state routing protocol?
- AThe link-state database provides segmentation by area, which improves the path-selection process.
- BThe link-state database provides a data repository from which the tunnel endpoints can dynamically select a source ID.
- CLink-state routing protocols use SPF calculations that the tunnel endpoints leverage to implement the tunnel.
- DThe tunnel endpoints use the link-state database to evaluate the entire topology and determine the best path.
Correct Answer:
D
D

MPLS TE tunnels fundamentally require the entire network topology view to make optimal path decisions. Link-state protocols like OSPF and IS-IS provide this comprehensive topological insight by disseminating a wide array of link and node attributes, including bandwidth availability. These protocols are particularly adept at supporting traffic engineering because they are capable of carrying necessary enhancements like additional TE-specific information, making them indispensable for implementing MPLS TE effectively.
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Question #5

Refer to the exhibit. BGPsec is implemented on R1, R2, R3, and R4. BGP peering is established between neighboring autonomous systems.
Which statement about implementation is true?
- ABGP updates from the iBGP peers are appended with a community of local-as.
- BBGP updates from the all BGP peers are appended with a community of no-export.
- CBGP updates from the eBGP peers are appended with an additional AS path value that is statically set by the domain administrator.
- DBGP updates from the eBGP peers are appended with a BGPsec attribute sequence that includes a public key hash and digital signature.
Correct Answer:
D
D
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Question #6
You are configuring MPLS traffic-engineering tunnels in the core. Which two ways exist for the tunnel path across the core? (Choose two.)
- AThe dynamic path option is supported only with IS-IS.
- BTunnels can be configured with dynamic path or explicitly defined path.
- CA zero bandwidth tunnel is not a valid option.
- DThe bandwidth statement creates a ג€hardג€ reservation on the link.
- ETunnel links inherit IGP metrics by default unless overridden.
Correct Answer:
BE
BE

The MPLS Traffic-Engineering (TE) tunnels are a vital technology in optimizing network path selection for performance and reliability. These tunnels can indeed be configured with either a dynamically calculated route or an explicitly defined path, enabling administrators to balance between automation and precision control. Furthermore, TE tunnels do not necessarily inherit the metrics from underlying IGP routes unless explicitly stated. This flexibility allows for more tailored traffic management strategies, accommodating specific network performance objectives and operational requirements.
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Question #7
Which configuration mode do you use to apply the mpls ldp graceful-restart command in IOS XE Software?
- AMPLS LDP neighbor
- Binterface
- CMPLS
- Dglobal
Correct Answer:
D
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_ha/configuration/xe-3s/mp-ha-xe-3s-book/mp-ldp-grace-rstrt.html
D
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_ha/configuration/xe-3s/mp-ha-xe-3s-book/mp-ldp-grace-rstrt.html
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Question #8
After you analyze your network environment, you decide to implement a full separation model for Internet access and MPLS L3VPN services.
For which reason do you make this decision?
For which reason do you make this decision?
- AIt enables EGP and IGP to operate independently.
- BIt enables you to choose whether to separate or centralize each individual service.Most Voted
- CIt is easier to manage a system in which services are mixed.
- DIt requires only one edge router.
Correct Answer:
B
B

The choice to implement a full separation model predominantly affords flexibility in deploying distinct services like Internet access and MPLS L3VPN based on organizational needs and security protocols. This approach not only caters to specific business requirements but also enhances security by segregating network traffic. This separation ensures that the management and operational policies of one service don't interfere with or compromise the efficiency and security of the other, allowing for a more tailored and secure network architecture.
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Question #9
Which statement about the Cisco MPLS TE forwarding adjacency feature is true?
- AIt enables the MPLS core to use EIGRP as the routing protocol.
- BIt enables the Cisco MPLS TE tunnel to be advertised into the running IGP.
- CIt enables the tailend router to advertise routes to the headend router over the tunnel.
- DIt enables the headend and tailend routers to establish a bidirectional tunnel.
Correct Answer:
B
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_te_path_setup/configuration/xe-16/mp-te-path-setup-xe-16-book/mpls-traffic-engineering- forwarding-adjacency.pdf
B
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_te_path_setup/configuration/xe-16/mp-te-path-setup-xe-16-book/mpls-traffic-engineering- forwarding-adjacency.pdf
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Question #10
While implementing TTL security, you issue the PE(config-router-af)#neighbor 2.2.2.2 ttl-security hops 2 command.
After you issue this command, which BGP packets does the PE accept?
After you issue this command, which BGP packets does the PE accept?
- Ato 2.2.2.2, with a TTL of 2 or more
- Bfrom 2.2.2.2, with a TTL of less than 2
- Cto 2.2.2.2, with a TTL of less than 253
- Dfrom 2.2.2.2, with a TTL of 253 or moreMost Voted
Correct Answer:
D
Reference:
https://www.cisco.com/c/en/us/td/docs/ios/12_2sx/feature/guide/fsxebtsh.html#wp1059215
D
Reference:
https://www.cisco.com/c/en/us/td/docs/ios/12_2sx/feature/guide/fsxebtsh.html#wp1059215
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