最新 [2022年02月16日] リアルCisco 300-410試験問題集解答
300-410問題集を使って一日でCCNP Enterprise試験合格（最新の280解答)
質問 89
Refer to the exhibit.
An engineer is monitoring reachability of the configured default routes to ISP1 and ISP2. The default route from ISP1 is preferred if available. How is this issue resolved?
- A. Use the same AD for both default routes
- B. Start IP SLA by defining frequency and scheduling it
- C. Use the icmp-echo command to track both default routes
- D. Start IP SLA by matching numbers for track and ip sla commands
正解: B
質問 90
What is a function of IPv6 Source Guard?
- A. It notifies the ND protocol to inform hosts if the traffic is denied by it.
- B. It inspects ND and DHCP packets to build an address binding table.
- C. It works with address glean or ND to find existing addresses.
- D. It denies traffic from known sources and allocated addresses.
正解: C
質問 91
What are two functions of LDP? (Choose two.)
- A. It uses Forwarding Equivalence Class
- B. It advertises labels per Forwarding Equivalence Class.
- C. It is defined in RFC 3038 and 3039.
- D. It must use Resource Reservation Protocol.
- E. It requires MPLS Traffic Engineering.
正解: A,B
解説:
Explanation
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/mpls/configuration/guide/mpls_cg/mp_
質問 92
Refer to the exhibit. After applying IPsec, the engineer observed that the DMVPN tunnel went down, and both spoke-to-spoke and hub were not establishing.
Which two actions resolve the issue? (Choose two.)
- A. Configure the crypto isakmp key cisco address 192.1.1.1 on R2 and R3.
- B. Remove the crypto isakmp key cisco address 10.1.1.1 on R2 and R3.
- C. Configure the crypto isakmp key cisco address 0.0.0.0 on R2 and R3.
- D. Change the mode from mode transport to mode tunnel on R2.
- E. Change the mode from mode tunnel to mode transport on R3.
正解: C,E
解説:
Section: VPN Technologies
質問 93
Drag and drop the MPLS VPN concepts from the left onto the correct descriptions on the right.
正解:
解説:
Reference:
https://www.rogerperkin.co.uk/featured/route-distinguisher-vs-route-target/
質問 94
Refer to the exhibit.
ISP 1 and ISP 2 directly connect to the Internet. A customer is tracking both ISP links to achieve redundancy and cannot see the Cisco IOS IP SLA tracking output on the router console. Which command is missing from the IP SLA configuration?
- A. Start-time 0
- B. Start-time now
- C. Start-time 00:00
- D. Start-time immediately
正解: B
質問 95
Drag and drop the MPLS VPN device types from me left onto the definitions on the right.
正解:
解説:
質問 96
Refer to the exhibit.
An engineer configures a static route on a router, but when the engineer checks the route to the destination, a different next hop is chosen. What is the reason for this?
- A. The configured AD for the static route is higher than the AD of OSPF.
- B. The syntax of the static route is not valid, so the route is not considered.
- C. The metric of the OSPF route is lower than the metric of the static route.
- D. Dynamic routing protocols always have priority over static routes.
正解: A
質問 97
Refer to the exhibit.
A router receiving BGP routing updates from multiple neighbors for routers in AS 690. What is the reason that the router still sends traffic that is destined to AS 690 to a neighbor other than 10.222.1.1?
- A. The local preference value in another neighbor statement is higher than 250.
- B. The local preference value should be set to the same value as the weight in the route map.
- C. The weight value in another neighbor statement is higher than 200.
- D. The route map is applied in the wrong direction.
正解: C
質問 98
Refer to the exhibit. Which action restores the routes from neighbors while still filtering 1.1.1.0/24?
- A. Add a second sequence in the route map permit 20
- B. Add a second line in the access list to permit any.
- C. Modify the access list to deny instead of permit it.
- D. Modify the route map to permit the access list instead of deny it
正解: A
解説:
We need to add a second sequence with the "route-map FILTER1 permit 20" (with no match conditions) so that all other conditions are permitted.
質問 99
Which configuration adds an IPv4 interface to an OSPFv3 process in OSPFv3 address family configuration?
- A. Router(config-if)#ospfv3 1 ipv4 area 0
- B. router ospfv3 1
address-family ipv4 - C. router ospfv3 1
address-family ipv4 unicast - D. Router(config-router)#ospfv3 1 ipv4 area 0
正解: C
解説:
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/xe-3s/iro-xe-3s-book/ip6-route-ospfv3-add-fam-xe.html
質問 100
Refer to the exhibit. The DHCP client is unable to receive an IP address from the DHCP server RouterB is configured as follows:
Interface fastethernet 0/0
description Client DHCP ID 394482431
Ip address 172 31 11 255 255.255 0
!
ip route 172.16.1.0 255 255 255.0 10.1.1.2
Which command is required on the fastethernet 0/0 interface of RouterB to resolve this issue?
- A. RouterB(config-if)#lp helper-address 172.16.1.1
- B. RouterB(config-if)#lp helper-address 172.31.1.1
- C. RouterB(config-if)#lp helper-address 172.16.1.2
- D. RouterBiconfig-ififclp helper-address 255.255 255 255
正解: C
質問 101
Drag and drop the packet types from the left onto the correct descriptions on the right.
正解:
解説:
Explanation
Unlike legacy network technologies such as ISDN, Frame Relay, and ATM that defined separate data and control channels, IP carries all packets within a single pipe. Thus, IP network devices such as routers and switches must be able to distinguish between data plane, control plane, and management plane packets to treat each packet appropriately.From an IP traffic plane perspective, packets may be divided into four distinct, logical groups:1. Data plane packets - End-station, user-generated packets that are always forwarded by network devices to other end-station devices. From the perspective of the network device, data plane packets always have a transit destination IP address and can be handled by normal, destination IP address-based forwarding processes.2. Control plane packets - Network device generated or received packets that are used for the creation and operation of the network itself. From the perspective of the network device, control plane packets always have a receive destination IP address and are handled by the CPU in the network device route processor. Examples include protocols such as ARP, BGP, OSPF, and other protocols that glue the network together.3. Management plane packets - Network device generated or received packets, or management station generated or received packets that are used to manage the network. From the perspective of the network device, management plane packets always have a receive destination IP address and are handled by the CPU in the network device route processor. Examples include protocols such as Telnet, Secure Shell (SSH), TFTP, SNMP, FTP, NTP, and other protocols used to manage the device and/or network.4. Services plane packets - A special case of data plane packets, services plane packets are also user-generated packets that are also forwarded by network devices to other end-station devices, but that require high-touch handling by the network device (above and beyond normal, destination IP address-based forwarding) to forward the packet. Examples of high-touch handling include such functions as GRE encapsulation, QoS, MPLS VPNs, and SSL/IPsec encryption/decryption, etc. From the perspective of the network device, services plane packets may have a transit destination IP address, or may have a receive destination IP address (for example, in the case of a VPN tunnel endpoint).
質問 102
Which Ipv6 first-hop security feature helps to minimize denial of service attacks?
- A. IPv6 Destination Guard
- B. IPv6 MAC address filtering
- C. DHCPv6 Guard
- D. IPv6 Router Advertisement Guard
正解: A
質問 103
Refer to the exhibit.
R1 is connected with R2 via GigabitEthernet0/0, and R2 cannot ping R1. What action will fix the issue?
- A. Fix route dampening configured on the router.
- B. Replace the SFP module because it is not supported.
- C. Correct the IP SLA probe that failed.
- D. Fix IP Event Dampening configured on the interface.
正解: D
解説:
質問 104
Which label operations are performed by a label edge router?
- A. SWAP and POP
- B. PUSH and POP
- C. PUSH and PHP
- D. SWAP and PUSH
正解: B
解説:
A label edge router (LER, also known as edge LSR) is a router that operates at the edge of an MPLS network and acts as the entry and exit points for the network. LERs push an MPLS label onto an incoming packet and pop it off an outgoing packet.
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/nx-os/mpls/configuration/guide/mpls_cg/mp_mpls_overview.pdf
質問 105
Exhibit:
Which action resolves the authentication problem?
- A. Configure the user name on the TACACS+ server
- B. Configure the TCP port 49 to be reachable by the router
- C. Configure the same password between the TACACS+ server and router.
- D. Configure the UDP port 1812 to be allowed on the TACACS+ server
正解: C
解説:
Explanation
From the last line of the output, we notice that the result was "Invalid AUTHEN packet". Therefore something went wrong with the username or password.
質問 106
Refer the exhibit.
Which action resolves intermittent connectivity observed with the SNMP trap packets?
- A. Decrease the committed burst Size of the mgmt class map
- B. Add one new entry in the ACL 120 to permit the UDP port 161
- C. Increase the CIR of the mgmt class map
- D. Add a new class map to match TCP traffic
正解: B
質問 107
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