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Question 16 Selectable Answer

Which configuration adds an IPv4 interface to an OSPFv3 process in OSPFv3 address family configuration?

A. Router ospf3 1 address-family ipv4
B. Router(config-router)#ospfv3 1 ipv4 area 0
C. Router(config-if)#ospfv3 1 ipv4 area 0
D. Router ospfv3 1 address-family ipv4 unicast

Answer:
Explanation:
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

Question 17 Selectable Answer

What are the two prerequisites to enable BFD on Cisco routers? (Choose two)

A. A supported IP routing protocol must be configured on the participating routers.
B. OSPF Demand Circuit must run BFD on all participating routers.
C. ICMP must be allowed on all participating routers.
D. UDP port 1985 must be allowed on all participating routers.
E. Cisco Express Forwarding and IP Routing must be enabled on all participating routers.

Answer:

Question 18 Selectable Answer

Refer to the exhibit.

Redistribution is enabled between the routing protocols, and nowPC2 PC3, and PC4 cannot reach PC1.
What are the two solutions to fix the problem? (Choose two.)

A. Filter RIP routes back into RIP when redistributing into RIP in R2
B. Filter OSPF routes into RIP FROM EIGRP when redistributing into RIP in R2.
C. Filter all routes except RIP routes when redistributing into EIGRP in R2.
D. Filter RIP AND OSPF routes back into OSPF from EIGRP when redistributing into OSPF in R2
E. Filter all routes except EIGRP routes when redistributing into OSPF in R3.

Answer:
Explanation:
Even PC2 cannot reach PC1 so there is something wrong with RIP redistribution in R2. Because RIP has higher Administrative Distance (AD) value than OSPF and EIGRP so it will be looped when doing mutual redistribution.

Question 19 Selectable Answer

Refer to the exhibit.

An administrator configures a router to stop using a particular default route if the DNS server 8.8.8.8 is not reachable through that route. However, this configuration did not work as desired and the default route still works even if the DNS server 8.8.8 8 is unreachable.
Which two configuration changes resolve the issue? (Choose two.)

A. Configure two static routes for the 8.8.8.8/32 destination to match the IP SLA probe for each IS
B. Associate every IP SLA probe with the proper WAN address of the router.
C. Reference the proper exit interfaces along with the next hops in both static default routes.
D. Use a separate track object to reference the existing IP SLA 1 probe for every static route.
E. Use a separate IP SLA probe and track object for every static route

Answer:

Question 20 Written Answer

DRAG DROP
An engineer must establish a connection between two CE routers for two customers with overlapping IP addresses Customer_a is connected to interfaces Gig0/0, and Customer_b is connected to interfaces Gig0/1.
Routers CE1 and CE2 are configured as follows:

Drag and drop the code snippets from the right onto the boxes in the configuration to establish the needed connection. Snippets may be used more than once.

Answer:

Question 21 Selectable Answer

Refer to the exhibit.

An engineer implemented an access list on R1 to allow anyone to Telnet except R2 Loopback0 to R1 Loopback4.
How must sequence 20 be replaced on the R1 access list to resolve the issue?

A. sequence 20 permit tcp host 1001 ABC:2011:7:: 1 host 400A:0:400C::1 eq telnet
B. sequence 20 deny tcp host 400A:0:400C::1 host 1001 :ABC:2011:7::1 eq telnet
C. sequence 20 deny tcp host 1001:ABC:2011:7::1 host 400A:0:400C::1 eq telnet
D. sequence 20 permit tcp host 400A:0:400C::1 host 1001ABC:2011:7::1 eq telnet

Answer:

Question 22 Selectable Answer

A customer requested a GRE tunnel through the provider network between two customer sites using loopback to hide internal networks.
Which configuration on R2 establishes the tunnel with R1?

A. R2(config)# interface Tunnel 1 R2(config-if)# ip address 172.20.1.2 255.255.255.0 R2(config-if)# ip mtu 1400 R2(config-if)# ip tcp adjust-mss 1360 R2(config-if)# tunnel source 192.168.20.1 R2(config-if)# tunnel destination 192.168.10.1
B. R2(config)# interface Tunnel 1 R2(config-if)# ip address 172.20.1.2 255.255.255.0 R2(config-if)# ip mtu 1400 R2(config-if)# ip tcp adjust-mss 1360 R2(config-if)# tunnel source 10.10.2.2 R2(config-if)# tunnel destination 10.10.1.1
C. R2(config)# interface Tunnel 1 R2(config-if)# ip address 172.20.1.2 255.255.255.0 R2(config-if)# ip mtu 1500 R2(config-if)# ip tcp adjust-mss 1360 R2(config-if)# tunnel source 192.168.20.1 R2(config-if)# tunnel destination 10.10.1.1
D. R2(config)# interface Tunnel 1 R2(config-if)# ip address 172.20.1.2 255.255.255.0 R2(config-if)# ip mtu 1500 R2(config-if)# ip tcp adjust-mss 1360 R2(config-if)# tunnel source 10.10.2.2 R2(config-if)# tunnel destination 10.10.1.1

Answer:

Question 23 Selectable Answer

Refer to the exhibit.

Which action makes 10.1.3.2 the feasible successor to reach 10. 200. 1 0/24 for location S42T447E33F95?

A. Increase path bandwidth lower than 1011 2 and lower than 1012 2 between RtrA and the destination
B. Increase path bandwidth higher than 10.1 2 2 and lower than 101.1.2 between RtrA and the destination.
C. Increase path bandwidth higher than 1011 2 and lower than 1012 2 between RtrA and the destination
D. Increase path bandwidth higher than 10.1 2 2 and higher than 10.1.1.2 between RtrA and the destination

Answer:

Question 24 Selectable Answer

Refer to the exhibit.

An engineer configures SW101 to send OSPFv3 interfaces state change messages to the server. However, only some OSPFv3 errors are being recorded. which organization resolves the ..?

A. snmp-server enable traps ospfv3 state-change if-state-change
B. snmp-server-enable traps ospfv3 state-change restart-status-change
C. snmp-server-enable traps ospfv3 state-change neighbor-state-change.
D. snmp-server-enable traps ospfv3 state-change if-state-change neighbor-state-change

Answer:

Question 25 Selectable Answer

Which label operations are performed by a label edge router?

A. SWAP and POP
B. SWAP and PUSH
C. PUSH and PHP
D. PUSH and POP

Answer:
Explanation:
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

Question 26 Selectable Answer

Refer to the exhibit

A network engineer received a call from the vendor for a failed attempt to remotely log in to their managed rooter loopback interface from 192 168.40 15.
Which action must the network engineer take to resolve the issue?

A. The IP access list VENDOR must be applied to interface loopback 100
B. The time-range configuration must be changed to use absolute instead of periodic
C. The EIGRP configuration must be updated to include a network statement for loopback 100
D. The source IP summarization must be updated to include the vendor source IP address

Answer:

Question 27 Selectable Answer

A company is expanding business by opening 35 branches over the Internet. A network engineer must configure DMVPN at the branch routers to connect with the hub router and allow NHRP to add spoke routers securely to the multicast NHRP mappings automatically.
Which configuration meets this requirement at the hub router?

A. interface Tunnel0 ip address 10.0.0.1 255.255.255.0 ip nhrp authentication KEY1 ip nhrp nhs dynamic ip nhrp network-id 10 tunnel mode mgre auto
B. interface Tunne10 ip address 10.0.0.1 255.255.255.0 ip nhrp authentication KEY1 ip nhrp registration no-unique ip nhrp network-id 10 tunnel mode gre nmba
C. interface Tunnel0 ip address 10.0.0.1 255.255.255.0 ip nhrp authentication KEY1 ip nhrp map multicast dynamic ip nhrp network-id 10 tunnel mode gre multi pointe
D. interface Tunnel0 ip address 10.0.0.1 255.255.255.0 ip nhrp authentication KEY 1 ip nhrp map multicast 224.0.0.0 ip nhrp network-id 10 tunnel mode gre ipv4

Answer:
Explanation:
The command “ip nhrp map multicast dynamic” allows NHRP to automatically add spoke routers to the multicast NHRP mappings.

Question 28 Selectable Answer

Refer to the exhibit.

R2 is a route reflector, and R1 and R3 are route reflector clients. The route reflector learns the route to 172.16.25.0/24 from R1, but it does not advertise to R3.
What is the reason the route is not advertised?

A. R2 does not have a route to the next hop, so R2 does not advertise the prefix to other clients.
B. Route reflector setup requires full IBGP mesh between the routers.
C. In route reflector setup, only classful prefixes are advertised to other clients.
D. In route reflector setups, prefixes are not advertised from one client to another.

Answer:

Question 29 Selectable Answer

Refer to the exhibit.

SanFrancisco and Boston routers are choosing slower links to reach each other despite the direct links being up.
Which configuration fixes the issue?

A. Option A
B. Option B
C. Option C
D. Option D

Answer:

Question 30 Selectable Answer

Exhibit:

NTP is configured across the network infrastructure and Cisco DNA Center. An NTP issue was reported on the Cisco DNA Center at 17:15.
Which action resolves the issue?

A. Check and resolve reachability between the WLC and the NTP server
B. Reset the NTP server to resolve any synchronization issues for all devices
C. Check and resolve reachability between Cisco DNA Center and the NTP server
D. Check and configure NTP on the WLC and synchronize with Cisco DNA Center

Answer:
Explanation:
Excessive time lag between Cisco DNA Center and device: The time difference between Cisco DNA Center and the device IP Address has drifted too far apart. Cisco DNA Center cannot process the device data accurately if the time difference is more than 3 minutes.
Reference: https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center-assurance/1-2-10/b_cisco_dna_assurance_1_2_10_ug/b_cisco_dna_assurance_1_2_10_ug_chapter_01101.html

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