A fully updated 2025 300-410 Exam Dumps exam guide from training expert TestBraindump
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NEW QUESTION # 41 
Refer to the exhibit R1 cannot establish a neighbor relationship with R2 Which action resolves the issue"?
- A. Configure the ip ospf network point-to-point command on the interfaces of R1 and R2
- B. Configure the ip ospf network broadcast command on the interfaces of R1 and R2
- C. Configure the neighbor 2.2.2.2 command on R1 under the OSPF process
- D. Configure the mtu Ignore command on the Interfaces of R1 and R2
Answer: D
Explanation:
In OSPF (Open Shortest Path First), the MTU (Maximum Transmission Unit) size must match on both sides of a link for OSPF neighbors to form an adjacency12. If the MTU sizes do not match, the OSPF adjacency will not form, and the routers will not become neighbors12.
In this case, R1 cannot establish a neighbor relationship with R2. One possible reason for this could be a mismatch in the MTU size on the interfaces of R1 and R212.
To resolve this issue, you can configure the mtu ignore command on the interfaces of R1 and R2 (Option A). This command allows OSPF to ignore the MTU size when determining if it can form an adjacency with a neighbor12. This means that even if the MTU sizes do not match, OSPF will still form an adjacency, and R1 and R2 will become neighbors12.
References:
OSPF MTU Mismatch - NetworkLessons.com
Understanding OSPF MTU Mismatch Conditions and Solutions - Cisco
NEW QUESTION # 42
Refer to the exhibit.
The neighbor relationship is not coming up Which two configurations bring the adjacency up? (Choose two)
- A. NY
router ospf 1
area 0 authentication message-digest - B. LA
interface E 0/0
ip ospf authentication-key Cisco123 - C. NY
interface E 0/0
no ip ospf message-digest-key 1 md5 Cisco123
ip ospf authentication-key Cisco123 - D. LA
router ospf 1
area 0 authentication message-digest - E. LA
interface E 0/0
ip ospf message-digest-key 1 md5 Cisco123
Answer: D,E
Explanation:
Explanation
The configuration on NY router is good for OSPF authentication. So we must enable OSPF authentication on LA router with the following commands:
router ospf 1
area 0 authentication message-digest
interface E0/0
ip ospf message-digest-key 1 md5 Cisco123
NEW QUESTION # 43
Refer to the exhibit.
An engineer configured IP SLA on R1 to avoid the ISP link flapping problem. but it is not working as designed IP SLA should wait 30 seconds before switching traffic to a secondary connection and then revert to the primary link after waning 20 seconds, when the primary link is available and stabilized. Which configuration resolves the issue?
- A. R1(config)#track 700 ip sla 700
R1(config-track)#delay down 30 up 20 - B. R1(config)#ip sla 700
R1(config-ip-sla)#delay down 20 up 30 - C. R1(config)#track 700 ip sla 700
R1(config-track)#delay down 20 up 30 - D. R1(config)#ip sla 700
R1(config-ip-sla)#delay down 30 up 20
Answer: A
NEW QUESTION # 44
Drag and drop the addresses from the left onto the correct IPv6 filter purposes on the right.
Answer:
Explanation:
NEW QUESTION # 45 
A network administrator is trying to access a branch router using TACACS+ username and password credentials, but the administrator cannot log in to the router because the WAN connectivity is down. The branch router has following AAA configuration:
Which command will resolve this problem when WAN connectivity is down?
- A. aaa authentication login console group tacacs+ enable
- B. aaa authentication login default group tacacs+ local
- C. aaa authentication login default group tacacs+ enable
- D. aaa authentication login default group tacacs+ console
Answer: B
Explanation:
With the "aaa authentication login default group tacacs+ local " command configured, when logging in, the password supplied will be attempted to be verified by the TACACS+ server before access is granted. If the server is unavailable/unreachable, then the switch will fall back to using the local authentication database.
NEW QUESTION # 46
Refer to the exhibit.
R1 has a route map configured, which results in a loss of partial IPv6 prefixes for the BGP neighbor, resulting in service degradation. How can the full service be restored?
- A. The neighbor requires a soft reconfiguration, and this will clear the policy without resetting the BGP TCP connection.
- B. The prefix lit requires all prefixes that R1 is advertising to be added to it, and this will allow additional prefixes to be advertised.
- C. The route map requires a permit 20 statement without set conditions, and this will allow additional prefixes to be advertised.
- D. The route map requires a deny 20 statement without set conditions, and this will allow additional prefixes to be advertised.
Answer: C
NEW QUESTION # 47
Refer to the exhibit.
Which interface configuration must be configured on the spoke A router to enable a dynamic DMVPN tunnel with the spoke B router?
- A. Option A
- B. Option C
- C. Option B
- D. Option D
Answer: C
Explanation:
The command -ip nhrp map multicast dynamic should be only used on Hub router, not spoke. If we are running dynamic routing protocols based on multicast (like RIP, OSPF, EIGRP ...) we have to add the command -ip nhrp map multicast dynamic in Hub to replicate all multicast traffic to all dynamic entries in the NHRP table (multicast will be proceeded as unicast traffic) - The tunnel source FastEthernet0/0" is equivalent to -tunnel source 172.17.0.2, which is the NBMA address of Spoke A.
NEW QUESTION # 48
Refer to the exhibit.
An engineer must configure OSPF with R9 and R10 and configure redistribution between OSPF and RIP causing a routing loop Which configuration on R9 and R10 meets this objective?
- A.
- B.
- C.
- D.
Answer: C
NEW QUESTION # 49 
Refer to the exhibit Which action resolves the issue?
- A. Configure a valid SNMP community string
- B. Configure host IP address in access-list 16
- C. Configure SNMP authentication on the router
- D. Configure SNMPv3 on the router
Answer: A
NEW QUESTION # 50
Refer to the exhibit.
The network administrator must mutually redistribute routes at the Chicago router to the LA and NewYork routers. The configuration of the Chicago router is this:
After the configuration, the LA router receives all the NewYork routes, but NewYork router does not receive any LA routes. Which set of configurations fixes the problem on the Chicago router?
- A.
- B.
- C.
- D.
Answer: D
Explanation:
"LA router receives all the NewYork routes but it does not receive any LA routes" because when redistrubuting into EIGRP, we must configure the default metric.
NEW QUESTION # 51
Refer to the exhibit.
The none area 0 routers in OSPF still receive more specific routes of 10.1.1.0.10.1.2.0.10.1.3.0 from area 0.
Which action resolves the issue?
- A. Summarize by using the summary-address 10.1.0.0 255.255.252.0 command.
- B. Configure the summary-address 10.1.0.0 255.255.252.0 command under OSPF process.
- C. Configure route summarization on OSPF-enabled interfaces.
- D. Summarize by using the area range command on ABRs
Answer: D
NEW QUESTION # 52
Drag and drop the ICMPv6 neighbor discovery messages from the left onto the correct packet types on the right.
Answer:
Explanation:
NEW QUESTION # 53
Refer to the exhibit.
An engineer configured NetFlow on R1, but the NMS server cannot see the flow from ethernet 0/0 of R1.
Which configuration resolves the issue?
- A. flow monitor Flowmonitor1
source Ethernet0/0 - B. interface Ethernet0/1
ip flow monitor Flowmonitor1 input
ip flow monitor Flowmonitor1 output - C. flow exporter FlowAnalyzer1
source Ethernet0/0 - D. interface Ethernet0/0
ip flow monitor Flowmonitor1 input
ip flow monitor Flowmonitor1 output
Answer: D
NEW QUESTION # 54
Refer to the exhibit. Which action installs route 192.168.2.2/32 in the routing table?
- A. Configure NAT on the local router to translate private IP addresses.
- B. Configure the next-hop-self attribute for the peering on the local router.
- C. Redistribute connected networks into BGP on the local router.
- D. Configure the next-hop-self attribute for the peering on the peer router.
Answer: D
NEW QUESTION # 55
Refer to the exhibit.
While monitoring VTY access to a router, an engineer notices that the router does not have any filter and anyone can access the router with username and password even though an ACL is configured.
Which command resolves this issue?
- A. access-class INTERNET in
- B. ip access-group INTERNET in
- C. ipv6 traffic-filter INTERNET in
- D. ipv6 access-class INTERNET in
Answer: D
NEW QUESTION # 56
What is a function of BFD?
- A. peer recovery after a Layer 2 adjacency failure
- B. failure detection independent of routing protocols and media types
- C. peer recovery after a Layer 3 protocol adjacency failure
- D. failure detection dependent on routing protocols and media types
Answer: D
NEW QUESTION # 57
The network administrator is tasked to configure R1 to authenticate telnet connections based on Cisco ISE using RADIUS. ISE has been configured with an IP address of 192.168.1.5 and with a network device pointing towards R1 (192.168.1.1) with a shared secret password of Cisco123. If ISE is down, the administrator should be able to connect using the local database with a username and password combination of admin/cisco123.
The administrator has configured the following on R1:
ISE has gone down. The Network Administrator is not able to Telnet to R1 when ISE went down. Which two configuration changes will fix the issue? (Choose two.)
- A. Option A
- B. Option E
- C. Option B
- D. Option C
- E. Option D
Answer: B,D
NEW QUESTION # 58
Refer to the exhibit.
An engineer cannot copy the IOS.bin file from the FTP server to the switch.
Which action resolves the issue?
- A. Allow file permissions to download the file from the FTP server.
- B. Add the IOS.bin file, which does not exist on FTP server.
- C. Make memory space on the switch flash or USB drive to download the file.
- D. Use the copy flash:/ ftp://[email protected]/IOS.bin command.
Answer: B
NEW QUESTION # 59
An engineer configured policy-based routing for a destination IP address that does not exist in the routing table. How is the packet treated through the policy for configuring the set ip default next-hop command?
- A. Packets are forwarded based on the routing table.
- B. Packets are forwarded based on a static route.
- C. Packets are not forwarded to the specific next hop.
- D. Packets are forwarded to the specific next hop.
Answer: D
Explanation:
The set ip default next-hop command verifies the existence of the destination IP address in the routing table, and...+ if the destination IP address exists, the command does not policy route the packet, but forwards the packet based on the routing table.+ if the destination IP address does not exist, the command policy routes the packet by sending it to the specified next hop.
NEW QUESTION # 60
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