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Cisco 300-420 Actual Questions and Braindumps
NEW QUESTION 51 
Refer to the exhibit. An architect must design a solution to connect the two ASs. To optimize bandwidth, the design will implement load sharing between router R6 and router R4. Which solution should the design include?
- A. Use maximum-paths to install multiple paths in the routing table.
- B. Configure the eBGP TTL to support eBGP multihop.
- C. Use next-hop-serf attributes only for routes that are learned from eBGP peers.
- D. Use update-source to specify the Loopback interface.
Answer: A
NEW QUESTION 52
An ISP provides Layer 3 VPN service over MPLS to a customer with four branches and multiple CE routers at each branch. To exchange the routes that are learned from the CE routers, which BGP address family should the ISP activate among the PE routers?
- A. VPNv4 unicast
- B. IPv4 unicast
- C. L2VPN EVPN
- D. address-family multicast
Answer: A
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-SM
- B. SSM
- C. PIM-DM
- D. MSDP
Answer: D
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-3s/asr903/imc-pim-xe-3s-asr90
NEW QUESTION 54
An engineer must design an addressing plan for a small business using a single /24 network. Each department must have its own subnet. Drag and drop the subnets from the left onto the departments requirements that they fulfill on the right. Not all options are used.
Answer:
Explanation:
NEW QUESTION 55
Which two statements about VRRP object tracking are true? (Choose two)
- A. The priority of a VRRP device can change in accordance with the up or down status of a VRRP object
- B. VRRP supports only interce tracking
- C. The VRRP interface priority must be manually configured by the administrator
- D. VRRP can track the status of interfaces and routes
- E. A VRRP group can track only one object at a time
Answer: A
NEW QUESTION 56
Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same AS number? (Choose two.)
- A. allow-as-in
- B. client-to-client reflection
- C. as-override
- D. advertise-best-external
- E. bestpath as-path ignore
Answer: A,C
NEW QUESTION 57
In what mode does an LWAPP-enabled access point operate?
- A. WGB
- B. autonomous mode
- C. ad hoc mode
- D. lightweight mode
Answer: D
Explanation:
Lightweight access point protocol (LWAPP)-enabled access points operate in lightweight mode. LWAPP is a protocol used to allow centralized management of APs. The management components are removed from the APs, and a WLAN controller provides a single point of management. This controller coordinates WLAN access, managing the load on the APs and user movement between APs. Upon starting, an LWAPP-enabled access point must obtain an IP address. It can then discover the controller using DHCP, DNS, or a subnet broadcast. When multiple wireless controllers are detected by an AP, it chooses to associate with the controller that has the fewest existing associated APs.
Individually configured APs that operate without central management are operating in autonomous mode. This would be the opposite of lightweight mode, which is made possible by LWAPP. Autonomous access points can be upgraded to lightweight. If they are upgraded, they will only function in conjunction with a WLAN controller.
Moreover, when an autonomous access point is upgraded to lightweight, the console port only provides read access to the unit.
Characteristics that autonomous and lightweight access points have in common:
Both support Power over Ethernet (PoE)
Both can use a Cisco Secure Access Control server (ACS) for security
A wireless gateway bridge (WGB) is used to connect a computer without a wireless network card to a wireless network, but not separate WLANs. The WGB can connect up to eight computers to a WLAN. The WGB connects to the root AP through a wireless interface.
Ad hoc is a WLAN mode used for peer-to-peer connectivity. Ad hoc mode allows wireless-enabled computers to communicate with each other without having an AP involved.
Objective:
Layer 2 Technologies
Sub-Objective:
Configure and verify other LAN switching technologies
References:
Cisco > Support > Product Support > Wireless > Cisco Aironet 1200 Series > Reference Guides > Technical References > Upgrading Autonomous Cisco Aironet Access Points to Lightweight Mode Cisco > Support > Technology Support > Wireless/Mobility > Wireless, LAN (WLAN) > Design > Design Technotes > Cisco Wireless Devices Association Matrix
NEW QUESTION 58
What is the purpose of a control plane node in a Cisco SD-Access network fabric?
- A. to act as the network gateway between the network fabric and outside networks
- B. to maintain the endpoint database and mapping between endpoints and edge nodes
- C. to detect endpoints in the fabric and inform the host tracking database of EID-to-fabric-edge node bindings
- D. to identify and authenticate endpoints within the network fabric
Answer: C
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html
NEW QUESTION 59
Which feature is required for graceful restart to recover from a processor failure?
- A. Virtual Switch System
- B. Bidirectional Forwarding Detection
- C. Cisco Express Forwarding
- D. Stateful Switchover
Answer: C
NEW QUESTION 60
Drag and drop the characteristics from the left onto the configuration protocols they describe on the right.
Answer:
Explanation:
NEW QUESTION 61 
Refer to the exhibit. An architect must design a solution to connect the network behind R3 with the EIGRP network. Which mechanism should be included to avoid routing loops?
- A. summarization
- B. down bit
- C. route tags
- D. split-horizon
Answer: C
NEW QUESTION 62
An engineer must connect a new remote site to an existing OSPF network. The new site consists of two low-end routers, one for WAN, and one for LAN. There is no demand for traffic to pass through this are a. Which area type does the engineer choose to provide minimal router resources utilization, while still allowing for full connectivity to the rest of the network?
- A. totally stubby area
- B. totally not so stubby
- C. stubby area
- D. not so stubby
Answer: A
NEW QUESTION 63
An engineer is working for a large cable TV provider that requires multiple sources streaming video on different channels using multicast with no rendezvous point.
Which multicast protocol meets these requirements?
- A. PIM-SSM
- B. any-source multicast
- C. BIDIR-PIM
- D. PIM-SM
Answer: A
NEW QUESTION 64 
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. Advertise a default route for downstream routers within the client network.
- B. Apply the AS-path prepend feature for ISP2.
- C. Apply route filtering such that the client advertises only routes originated from its own AS.
- D. Run an eBGP session within different VRFs for each ISP.
Answer: A
NEW QUESTION 65
Which technology provides a multichassis IP connection between VSS-enabled switches and downstream devices?
- A. PAgP
- B. LAG
- C. BFD
- D. ICCP
- E. LACP
- F. MEC
Answer: F
NEW QUESTION 66
Refer to the exhibit.
An engineer must optimize the traffic flow of the network. Which change provides a more efficient design between the access and the distribution layer?
- A. Change the link between distribution switch A and distribution switch B to be a routed link
- B. Reconfigure the distribution switch A to become the HSRP Active
- C. Create an EtherChannel link between distribution switch A and distribution switch B
- D. Add a link between access switch A and access switch B
Answer: B
NEW QUESTION 67
Which routes does the overlay management protocol advertise in an SD-WAN overlay?
- A. Internet, MPLS, and backup
- B. primary, backup, and load-balanced
- C. prefix, TLOC, and service
- D. underlay, MPLS, and overlay
Answer: C
Explanation:
Section: WAN for Enterprise Networks
NEW QUESTION 68
Refer to the exhibit.
Which solution decreases the EIGRP convergence time?
- A. Enable subsecond timers
- B. Enable stub routing on the spokes
- C. Increase the hold time value
- D. Increase the dead timer value
Answer: B
NEW QUESTION 69
Which statements about RSPAN are true? (Choose two.)
- A. MAC address learning is not supported
- B. only one RSPAN VLAN can be configured per device.
- C. RSPAN VLANs are exempt from VTP pruning.
- D. RSPAN VLANS can carry RSPAN traffic only.
- E. It supports MAC address learning.
- F. RSPAN uses are GRE tunnel to transmit captured traffic.
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 70
Refer to the exhibit. PC-2 failed to establish a Telnet connection to the Terminal Server. Which solution allows PC-2 to establish the Telnet connection?
- A. Gateway-Router(config)#ipv6 access-list Default_Access
Gateway-Router(config-ipv6-acl)#sequence 25 permit tcp host 2018:DB1:A:B::2 host 2018:DB1:A:C::1 eq telnet - B. Gateway-Router(config)#ipv6 access-list Default_Access
Gateway-Router(config-ipv6-acl)#permit tcp host 2018:DB1:A:B::2 host 2018:DB1:A:C::1 eq telnet - C. Gateway-Router(config)#ipv6 access-list Default_Access
Gateway-Router(config-ipv6-acl)#no sequence 20
Gateway-Router(config-ipv6-acl)#sequence 5 permit tcp host 2018:DB1:A:B::2 host 2018:DB1:A:C::1 eq telnet - D. Gateway-Router(config)#ipv6 access-list Default_Access
Gateway-Router(config-ipv6-acl)#sequence 15 permit tcp host 2018:DB1:A:B::2 host 2018:DB1:A:C::1 eq telnet
Answer: B
NEW QUESTION 71
Refer to the exhibit.
An engineer is designing an OSPF network for a client. Requirements dictate that the routers in Area 1 should receive all routes belonging to the network, including EIGRP, except the ones originated in the RIP domain. Which action should the engineer take?
- A. Make area 1 a stub.
- B. Make area 1 a standard OSPF area.
- C. Make area 1 a NSSA.
- D. Make the area 1 routers part of area 0.
Answer: A
NEW QUESTION 72
Which design consideration must be made when using IPv6 overlay tunnels?
- A. Overlay tunnels that connect isolated IPv6 networks can be considered a final IPv6 network architecture.
- B. Overlay tunnels can be configured only between border devices and require only the IPv6 protocol stack.
- C. Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure.
- D. Overlay tunnels should only be considered as a transition technique toward a permanent solution.
Answer: D
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/configuration/xe-3s/ir-xe-3s-book/ip6-ip4-gre-tunls-
"The use of overlay tunnels should be considered as a transition technique toward a network that supports both the IPv4 and IPv6 protocol stacks or just the IPv6 protocol stack."
NEW QUESTION 73
Which solution allows overlay VNs to communicate with each other in an SD-WAN Architecture?
- A. External fusion routers can be used to map VNs to VRFs and selectively route traffic between VRFs.
- B. SGTs can be used to permit traffic from one VN to another.
- C. GRE tunneling can be configured between fabric edges to connect one VN to another.
- D. Route leaking can be used on the fabric border nodes to inject routes from one VN to another.
Answer: C
Explanation:
Section: WAN for Enterprise Networks
NEW QUESTION 74
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