Free 300-420 braindumps download (300-420 exam dumps Free Updated Dec 09, 2021)
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NEW QUESTION 76
An engineer must design a solution to provide backup connectivity between two sites. The engineer plans to use an Internet connection but company policy requires the connection to be encrypted. Additionally, there are several applications that utilize multicast to deliver video streams between the sites. Which technology should the design include?
- A. DMVPN
- B. GETVPN
- C. IPsec direct encapsulation
- D. GRE over IPsec
Answer: D
NEW QUESTION 77 
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 78
Refer to the exhibit. The distribution switches serve as the layer 3 boundary. HSRP preemption is enabled. When the primary switch comes back after a failure, traffic is initially dropped. Which solution must be implemented to improve the design?
- A. Configure a higher mac-refresh interval on both HSRP devices
- B. Use the preempt delay feature on the primary HSRP device.
- C. Use the preempt delay feature on the backup HSRP device
- D. Increase the hello timers on both HSRP devices
Answer: B
NEW QUESTION 79
A company is running BGP on a single router, which has two connections to the same ISP. Which BGP feature ensures traffic is load balanced across the two links to the ISP?
- A. Multihop
- B. Multipath Load Sharing
- C. AS-Path Prepending
- D. Next-Hop Address Tracking
Answer: B
NEW QUESTION 80
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. Configure the eBGP TTL to support eBGP multihop.
- B. Use update-source to specify the Loopback interface.
- C. Use next-hop-serf attributes only for routes that are learned from eBGP peers.
- D. Use maximum-paths to install multiple paths in the routing table.
Answer: D
NEW QUESTION 81
The implementations group has been using the test bed to do a 'proof-of-concept' that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolated the cause of this fault and answer the following questions.
The fault condition is related to which technology?
- A. NTP
- B. IPv4 OSPF Redistribution
- C. BGP
- D. IPv4 layer 3 security
- E. IPv4 OSPF Routing
- F. IPv6 OSPF Routing
- G. IP NAT
Answer: E
Explanation:
On R1, for IPV4 authentication of OSPF the command is missing and required to configure------ ip ospf authentication message-digest
NEW QUESTION 82
Drag and drop the description from the left onto the corresponding WAN connectivity types and categories on the right.
Answer:
Explanation:
NEW QUESTION 83
Which method will filter routes between EIGRP neighbors within the same autonomous system?
- A. policy-based routing
- B. leak-map
- C. distribute-list
- D. route tagging
Answer: C
NEW QUESTION 84 
Refer to the exhibit. The connection between SW2 and SW3 is fiber and occasionally experiences unidirectional link failure. An architect must optimize the network to reduce the change of layer2 forwarding loops when the link fails. Which solution should the architect include?
- A. Utilize 8PDU filter on SW3.
- B. Utilize loop guard on SW2
- C. Utilize root guard on SW1.
- D. Utilize BPDU guard on SW1
Answer: B
NEW QUESTION 85
An engineer must propose a solution for a campus network that includes the capability to create multiple Layer
3 virtual networks. Each network must have its own addressing structure and routing table for data forwarding.
The solution must be scalable to support hundreds of virtual networks and allow simple configuration and management with minimal administrative overhead. Which solution does the engineer recommend?
- A. multihop IPsec tunneling
- B. multihop MPLS core
- C. hop-by-hop VRF-Lite
- D. hop-by-hop EVN
Answer: D
NEW QUESTION 86
Refer to the exhibit.
Which solution decreases the EIGRP convergence time?
- A. Enable subsecond timers
- B. Increase the hold time value
- C. Increase the dead timer value
- D. Enable stub routing on the spokes
Answer: D
NEW QUESTION 87
Which two statements describe source trees in a multicast environment? (Choose two.)
- A. Source trees can create suboptimal paths between the source and the receivers
- B. Source trees guarantee the minimum amount of network latency for forwarding multicast traffic
- C. Source trees can introduce latency in packet delivery
- D. Source trees use a single common root placed at some chosen point in the network
- E. Source trees create an optimal path between the source and the receivers
Answer: B,E
Explanation:
Section: Network Services
NEW QUESTION 88
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. Add a link between access switch A and access switch B
- B. Change the link between distribution switch A and distribution switch B to be a routed link
- C. Create an EtherChannel link between distribution switch A and distribution switch B
- D. Reconfigure the distribution switch A to become the HSRP Active
Answer: D
NEW QUESTION 89
You have executed the following commands on switchA:
What is the result of executing the given commands? (Choose two.)
- A. 802.1X authentication is enabled on the Fa0/1 interface only
- B. The key for the RADIUS server is firstKey111
- C. AAA is not enabled on the switch
- D. Only the listed RADIUS server is used for authentication
Answer: B,D
Explanation:
A default list is used for the RADIUS server for authentication and the key for the RADIUS server is firstKey111. A RADIUS server combines the authentication and authorization processes. Before you configure the RADIUS server, you should enable AAA by using the aaa new-model command in the global configuration mode. Then, you can specify the location of the RADIUS server and the key using the radius-server host command. In this case, the RADIUS server is located at the IP address 192.168.105.67 and requires the key firstKey111 as the encryption key. This key must be mutually agreed upon by the server and the clients.
The aaa authentication dot1x default group radius command creates a method list for 802.1X authentication.
The default group radius keywords specify that the default method will be to use all listed RADIUS servers to authenticate clients. Since only one is listed, it will be the only one used.
It is incorrect to state that 802.1X authentication is enabled on the Fa0/1 interface only. The interface range Fa
0/1 - 11 and the dot1x port-control auto commands specify that 802.1X authentication is enabled on the interfaces Fa0/1 to Fa0/11.
It is incorrect to stat that AAA is not enabled on the switch. The aaa new-model command enables AAA globally on the switch.
Objective:
Infrastructure Security
Sub-Objective:
Describe device security using Cisco IOS AAA with TACACS+ and RADIUS
References:
Catalyst 4500 Series Switch Cisco IOS Software Configuration Guide, 12.2(31)SG > Configuring 802.1X Port- Based Authentication Cisco IOS LAN Switching Command Reference (PDF)
NEW QUESTION 90
When a network is designed using IS-IS protocol, which two circuit types are supported? (Choose two.)
- A. nonbroadcast multiaccess
- B. point-to-point
- C. multiaccess
- D. nonbroadcast
- E. point-to-multipoint
Answer: B,C
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION 91
Refer to the exhibit.
Area 10 is a regular OSPF area and networks 10.1.1.0/24 and 172.16.1.0/24 are internal. Which design provides optimal routing between both networks when the link between routers C and E fails?
- A. Move the link between routers C and D to area 10.
- B. Create a tunnel between routers E and F in area 10.
- C. Make area 10 a not-so-stubby area.
- D. Create an OSPF virtual link between routers E and F.
Answer: A
NEW QUESTION 92
......
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