CCNP Enterprise Certified Official Practice Test 300-420 - Dec-2023
Ace Cisco 300-420 Certification with Actual Questions Dec 31, 2023 Updated
NEW QUESTION # 31
An engineer is designing an EIGRP network for a small branch site where there is only one Layer 3 router.
The engineer wants the router to advertise the local LAN network to remote EIGRP neighbors without sending any unnecessary multicast messages on the local LAN. Which action should the engineer take?
- A. Use a static default route for this site instead of EIGRP
- B. Advertise the local LAN using the network command and the passive-interface feature
- C. Advertise the local LAN subnet as a stub network
- D. Redistribute the local LAN network using the redistribute connected command
Answer: B
NEW QUESTION # 32 
Refer to the exhibit. An engineer is designing a BGP solution for a client that peers with ISP1 for full Internet connectivity and with ISP2 for direct exchange of routes for several third parties. Which action, when implemented on the edge routers, enables the client network to reach the Internet through ISP1?
- A. Run an eBGP session within different VRFs for each ISP.
- B. Apply route filtering such that the client advertises only routes originated from its own AS.
- C. Apply the AS-path prepend feature for ISP2.
- D. Advertise a default route for downstream routers within the client network.
Answer: D
Explanation:
Section: WAN for Enterprise Networks
NEW QUESTION # 33
Which statements about RSPAN are true? (Choose two.)
- A. MAC address learning is not supported
- B. RSPAN uses are GRE tunnel to transmit captured traffic.
- C. It supports MAC address learning.
- D. RSPAN VLANS can carry RSPAN traffic only.
- E. RSPAN VLANs are exempt from VTP pruning.
- F. only one RSPAN VLAN can be configured per device.
Answer: A,D
Explanation:
The RSPAN VLAN carries SPAN traffic between RSPAN source and destination sessions. It has these special characteristics:
All traffic in the RSPAN VLAN is always flooded.
No MAC address learning occurs on the RSPAN VLAN.
RSPAN VLAN traffic only flows on trunk ports.
RSPAN VLANs must be configured in VLAN configuration mode by using the remote-span VLAN configuration mode command.
STP can run on RSPAN VLAN trunks but not on SPAN destination ports.
An RSPAN VLAN cannot be a private-VLAN primary or secondary VLAN.
For VLANs 1 to 1005 that are visible to VLAN Trunking Protocol (VTP), the VLAN ID and its associated RSPAN characteristic are propagated by VTP. If you assign an RSPAN VLAN ID in the extended VLAN range (1006 to 4094), you must manually configure all intermediate switches.
It is normal to have multiple RSPAN VLANs in a network at the same time with each RSPAN VLAN defining a network-wide RSPAN session. That is, multiple RSPAN source sessions anywhere in the network can contribute packets to the RSPAN session. It is also possible to have multiple RSPAN destination sessions throughout the network, monitoring the same RSPAN VLAN and presenting traffic to the user. The RSPAN VLAN ID separates the sessions.
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_40_se/configuration/ guide/scg/swspan.pdf
NEW QUESTION # 34
Refer to the exhibit.
Which solution decreases the EIGRP convergence time?
- A. Enable stub routing on the spokes
- B. Increase the dead timer value
- C. Increase the hold time value
- D. Enable subsecond timers
Answer: A
NEW QUESTION # 35
Which control-plane technology allows the same subnet to exist across multiple network locations?
- A. FabricPath
- B. ISE mobility services
- C. VXLAN
- D. LISP
Answer: C
NEW QUESTION # 36
Which feature must be incorporated into the campus LAN design to enable Wake on LAN?
- A. proxy ARP on layer 3 devices
- B. dynamic ARP Inspection Snooping on layer 2 devices
- C. DHCP Snooping on layer 2 devices
- D. directed broadcasts on layer 3 devices
Answer: D
NEW QUESTION # 37
An engineer is upgrading a company's main site to include a connection to a second ISP. The company will receive full Internet routing tables from both ISPs via BGP. The engineer must ensure that the company does not become a transit autonomous system. Which solution should be included in this design?
- A. Modify the local-preference for routes incoming from the primary ISP.
- B. Tag incoming routes from both ISPs with BGP community no-export.
- C. Lower the MED for updates sent to the secondary ISP.
- D. Use a route-map to prevent all prefixes from being advertised to either ISP.
Answer: B
Explanation:
Section: WAN for Enterprise Networks
NEW QUESTION # 38
Refer to the exhibit.
An architect is designing a network for a customer supporting a Wake-on-LAN application. Which solution must the architect choose?
- A. spanning-tree uplinkfast on SW2
- B. IP directed-broadcasts on R1
- C. spanning-tree uplinkfast on SW1
- D. IP directed-broadcasts on R2
Answer: D
Explanation:
"IP directed broadcast" must be supported on the last router to the destination subnet. Since the sleeping PC's dont have IP adresses, the machines must be calles awake by broadcast that behaves like an unicast untill they reach the destination network. There the directed broadcast is handled like a proper broadcast to wake all WOL machines.
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/91672-catl3-wol-vlans.html
NEW QUESTION # 39
How does a model-driven telemetry dial-out approach function?
- A. The device initiates a session to the collector and negotiates a subscription.
- B. The collector initiates a session to the device and subscribes to data to be streamed.
- C. The device initiates a session to the collector based on the subscription.
- D. The collector Initiates a session to the device and gets the data of a previously defined subscription.
Answer: A
NEW QUESTION # 40
Which two options can you use to configure an EIGRP stub router? (Choose two)
- A. external
- B. summary-only
- C. totally-stubby
- D. summary
- E. receive-only
- F. not-so-stubby
Answer: D,E
NEW QUESTION # 41
Which control-plane technology allows the same subnet to exist across multiple network locations?
- A. FabricPath
- B. VXLAN
- C. ISE mobility services
- D. LISP
Answer: D
Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html
NEW QUESTION # 42
When a network is designed using IS-IS protocol, which two circuit types are supported? (Choose two.)
- A. nonbroadcast multiaccess
- B. point-to-multipoint
- C. point-to-point
- D. nonbroadcast
- E. multiaccess
Answer: C,E
NEW QUESTION # 43
Which design consideration should be observed when EIGRP is configured on Data Center switches?
- A. Prevent unnecessary EIGRP neighborships from forming across switch virtual interfaces.
- B. Lower EIGRP hello and hold timers to their minimum settings to ensure rapid route reconvergence.
- C. Configure multiple EIGRP autonomous systems to segment Data Center services and applications.
- D. Perform manual summarization on all Layer 3 interfaces to minimize the size of the routing table.
Answer: D
NEW QUESTION # 44
Which two tasks must you perform to configure DHCP snooping on a device? (Choose two.)
- A. Enable DHCP packet validation on the device
- B. Enable DHCP snooping on the VLAN
- C. Enable VRF support for the DHCP relay agent
- D. Enable DHCP snooping globally
- E. Enable DHCP option 82
Answer: B,D
Explanation:
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx-os/security/configuration/ guide/sec_nx-os-cfg/sec_dhcpsnoop.html
NEW QUESTION # 45 
Refer to the exhibit. A customer needs to apply QoS to the network management traffic passing through the GigabitEthernet0/2 interface. All eight queuing classes are in use, so the new requirement must be integrated into the existing policy. Which solution must the customer choose?
- A. Mark the traffic to DSCP CS2 and assign it to the ROUTING class Then, baseline existing queue sizes to determine if additional bandwidth can be provisioned to the ROUTING class
- B. Mark the traffic to DSCP CS4 and assign it to the SIGNALLING class. Then, prioritize traffic within the class.
- C. Mark traffic to DSCP CS5 and assign it to the SIGNALLING class. Then, baseline existing queue sizes to determine if additional bandwidth can be provisioned to the SIGNALLING class.
- D. Mark the traffic to DSCP CS6 and assign it to the ROUTING class Then, prioritize traffic within the class.
Answer: A
NEW QUESTION # 46
Drag and drop the characteristics from the left onto the Yang model they describe on the right.
Select and Place:
Answer:
Explanation:
NEW QUESTION # 47 
Refer to the exhibit. EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the WAN links to R4.
When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?
- A. R1 forwards the traffic to R3, but R3 drops the traffic
- B. R1 load-balances across the paths through R3 and R4 to reach R2
- C. R1 has no route to R2 and drops the traffic
- D. R1 forwards the traffic to R3 in order to reach R2
Answer: D
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION # 48
Drag and drop the characteristics from the left onto the configuration protocols they describe on the right.
Answer:
Explanation:
NEW QUESTION # 49
In a cisco SD-Access brownfield deployment scenario, which configuration deployment must be taken with Cisco DNA center?
- A. Manual underlay
- B. Subnet stretching
- C. Automated UNDERLAY
- D. LAN automation
Answer: D
NEW QUESTION # 50 
Refer to the exhibit. An architect is designing a BGP solution to connect a remote branch to a service provider.
There are several prefixes within the branch that the company does not want to be advertised to the internet.
Which solution should the architect use to accomplish this?
- A. Set the BGP Internet community for all prefixes.
- B. Attach the No-Export community with the prefixes to exclude
- C. Implement the NOPEER community.
- D. Use the BGP No-Advertise community for the prefixes to exclude.
Answer: B
NEW QUESTION # 51
Drag and drop the characteristics from the left onto the correct telemetry mode on the right.
Answer:
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/iosxr/asr9000/telemetry/b-telemetry-cg-asr9000-61x/b-telemetry-cgasr9000-
61x_chapter_010.html#id_36445
NEW QUESTION # 52
Refer to the exhibit. An architect is developing a solution to consolidate networks while retaining device redundancy. The routing protocol for the WAN routers must be open standard, ensure high availability, and provide the fastest convergence time. Which solution must the design include?
- A. both routers running OSPFv2
- B. one router running OSPFv2 and other OSPF v3
- C. both routers running EIGRP
- D. one router running ISIS and other OSPF v3
Answer: C
Explanation:
EIGRP has a function called "EIGRP Ipv6" (But that can still be called "EIGRP")
NEW QUESTION # 53
An organization plans to deploy multicast across two different autonomous systems. Their solution must allow RPs to:
* discover active sources outside their domain
* use the underlying routing information for connectivity with other RPs
* announce sources joining the group
Which solution supports these requirements?
- A. PIM-DM
- B. PIM-SM
- C. SSM
- D. MSDP
Answer: D
Explanation:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-3s/asr903/imc-pim-xe-3s-asr903-book/imc_msdp.pdf
NEW QUESTION # 54
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