CCNP ENARSI PART 5

Refer to the exhibit. A network administrator is troubleshooting OSPF adjacency issue by going through the console logs in the router, but due to an overwhelming log messages stream, it is impossible to capture the problem. Which two commands reduce console log messages to relevant OSPF neighbor problem details so that the issue can be resolved? (Choose two.). A. debug condition ospf neighbor. B. debug condition interface. C. debug condition session-id ADJCHG. D. debug condition all.

Refer to the exhibit. A network is under a cyberattack. A network engineer connected to R1 by SSH and enabled the terminal monitor via SSH session to find the source and destination of the attack. The session was flooded with messages, which made it impossible for the engineer to troubleshoot the issue. Which command resolves this issue on R1?. A. (config)#terminal no monitor. B. (config)#no terminal monitor. C. #no terminal monitor. D. #terminal no monitor.

Refer to the exhibit. A network administrator has developed a Python script on the local Linux machine and is trying to transfer it to the router. However, the transfer fails. Which action resolves this issue?. A. The Python interpreter must first be enabled with the guestshell enable command. B. The SSH access must be allowed on the VTY lines using the transport input ssh command. C. The SSH service must be enabled with the crypto key generate rsa command. D. The SCP service must be enabled with the ip scp server enable command.

Refer to the exhibit. An engineer configured SNMP communities on the Core_Sw1, but the SNMP server cannot obtain information from Core_Sw1. Which configuration resolves this issue?. A. access-list 20 permit 10.221.10.11. B. snmp-server group NETADMIN v3 priv read NETVIEW write NETADMIN access 22. C. snmp-server group NETVIEW v2c priv read NETVIEW access 20. D. access-list 20 permit 10.221.10.12.

Refer to the exhibit. Which two commands provide the administrator with the information needed to resolve the issue? (Choose two.). A. debug snmpv3 engine-id. B. show snmp user. C. debug snmp packet. D. debug snmp engine-id. E. show snmpv3 user.

The network administrator can see the DHCP discovery packet in R1, but R2 is not replying to the DHCP request. The R1 related interface is configured with the DHCP helper address. If the PC is directly connected to the Fa0/1 interface on R2, the DHCP server assigns as IP address from the DHCP pool to the PC. Which two commands resolve this issue? (Choose two.). A. service dhcp-relay command on R1. B. ip dhcp relay information enable command on R1. C. ip dhcp option 82 command on R2. D. service dhcp command on R1. E. ip dhcp relay information trust-all command on R2.

A network administrator performed a Compact Flash Memory upgrade on a Cisco Catalyst 6509 Switch. Everything is functioning normally except SNMP, which was configured to monitor the bandwidth of key interfaces but the interface indexes are changed. Which global configuration resolves the issue?. A. snmp-server ifindex persist. B. snmp-server ifindex permanent. C. snmp ifindex persist. D. snmp ifindex permanent.

Refer to the exhibit. R1 is configured with IP SLA to check the availability of the server behind R6 but it kept failing. Which configuration resolves the issue?. A. R6(config)#ip sla responder udp-echo ip address 10.10.10.1 port 5000. B. R6(config)#ip access-list extended DDOS R6(config-ext-nacl)#5 permit icmp host 10.10.10.1 host 10.66.66.66. C. R6(config)#ip sla responder. D. R6(config)#ip access-list extended DDOS R6(config-ext-nacl)#5 permit icmp host 10.66.66.66 host 10.10.10.1.

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 waiting 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 30 up 20. C. R1 (config)#ip sla 700 R1(config-ip-sla)#delay down 20 up 30. D. R1(config)#track 700 ip sla 700 R1(config-track)#delay down 20 up 30.

Refer to the exhibit. An engineer must block access to the console ports for all corporate remote Cisco devices based on the recent corporate security policy but the security team still can connect through the console port. Which configuration on the console port resolves the issue?. A. login and password. B. exec 0 0. C. transport input telnet. D. no exec.

Refer to the exhibit. A network administrator is troubleshooting IPv6 address assignment for a DHCP client that is not getting an IPv6 address from the server. Which configuration retrieves the client IPv6 address from the DHCP server?. A. ipv6 address autoconfig command on the interface. B. ipv6 dhcp server automatic command on DHCP server. C. ipv6 dhcp relay-agent command on the interface. D. service dhcp command on DHCP server.

Refer to the exhibit. A junior engineer configured SNMP to network devices. Malicious users have uploaded different configurations to the network devices using SNMP and TFTP servers. Which configuration prevents changes from unauthorized NMS and TFTP servers?. A. access-list 20 permit 10.221.10.11 access-list 20 deny any log ! snmp-server group NETVIEW v3 priv read NETVIEW access 20 snmp-server group NETADMIN v3 priv read NETVIEW write NETADMIN access 20 snmp-server community Cisc0Us3r RO 20 snmp-server community Cisc0wrus3r RW 20 snmp-server tftp-server-list 20. B. access-list 20 permit 10.221.10.11 access-list 20 deny any log ! snmp-server group NETVIEW v3 priv read NETVIEW access 20 snmp-server group NETADMIN v3 priv read NETVIEW write NETADMIN access 20 snmp-server community Cisc0wrus3r RO 20 snmp-server community Cisc0Us3r RW 20 snmp-server tftp-server-list 20. C. access-list 20 permit 10.221.10.11 access-list 20 deny any log. D. access-list 20 permit 10.221.10.11.

An engineer creates a Cisco DNA Center cluster with three nodes, but all the services are running on one host node. Which action resolves this issue?. A. Restore the link on the switch interface that is connected to a cluster link on the Cisco DNA Center. B. Click system updates, and upgrade to the latest version of Cisco DNA Center. C. Enable service distribution from the Systems 360 page. D. Click the master host node with all the services and select services to be moved to other hosts.

Refer to the exhibit. The AP status from Cisco DNA Center Assurance Dashboard shows some physical connectivity issues from access switch interface G1/0/14. Which command generates the diagnostic data to resolve the physical connectivity issues?. A. check cable-diagnostics tdr interface GigabitEthernet1/0/14. B. verify cable-diagnostics tdr interface GigabitEthernet1/0/14. C. show cable-diagnostics tdr interface GigabitEthernet1/0/14. D. test cable-diagnostics tdr interface GigabitEthernet1/0/14.

Refer to the exhibit. An engineer configured NetFlow on R1, but the NMS server cannot see the flow from R1. Which configuration resolves the issue?. A. interface Ethernet0/1 flow-destination 10.221.10.11. B. interface Ethernet0/0 flow-destination 10.221.10.11. C. flow exporter FlowAnalyzer1 destination 10.221.10.11. D. flow monitor Flowmonitor1 destination 10.221.10.11.

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://cisco@10.0.0.2/IOS.bin command.

Refer to the exhibit. After reloading the router, an administrator discovered that the interface utilization graphs displayed inconsistencies with their previous history in the NMS. Which action prevents this issue from occurring after another router reload in the future?. A. Configure SNMP interface index persistence on the router. B. Save the router configuration to startup-config before reloading the router. C. Rediscover all the router interfaces through SNMP after the router is reloaded. D. Configure SNMP to use static OIDs referring to individual router interfaces.

Refer to the exhibit. In an attempt to increase the network security, the administrator applied the Gi3-in ACL to the Gi3 interface. After the ACL was applied, clients in the network connected to Gi3 lost their ability to obtain IP settings from DHCP. Which two configuration commands must be added to the Gi3-in ACL to reinstate the DHCP service for the clients? (Choose two.). A. 74 permit udp 192.168.30.0 0.0.0.255 eq bootpc host 192.168.255.3 eq bootps. B. 71 permit udp host 0.0.0.0 eq bootps host 255.255.255.255 eq bootpc. C. 73 permit udp host 0.0.0.0 eq bootpc host 192.168.255.3 eq bootps. D. 72 permit udp host 192.168.255.3 eq bootps 192.168.30.0 0.0.0.255 eq bootpc. E. 75 permit udp host 0.0.0.0 eq bootpc host 255.255.255.255 eq bootps.

Refer to the exhibit. Router R2 should be learning the route for 10.123.187.0/24 via EIGRP. Which action resolves the issue without introducing more issues?. A. Redistribute the route in EIGRP with metric, delay, and reliability. B. Use distribute-list to modify the route as an internal EIGRP route. C. Use distribute-list to filter the external routes in OSPF. D. Remove route redistribution in R2 for this route in OSPF.

Refer to the exhibit. The control plane is heavily impacted after the CoPP configuration is applied to the router. Which command removal lessens the impact on the control plane?. A. access-list 120 permit tcp any gt 1024 eq bgp log. B. access-list 120 permit ospf any. C. access-list 120 permit udp any any eq pim-auto-rp. D. access-list 120 permit eigrp any host 224.0.0.10.

Refer to the exhibit. An engineer is trying to add an encrypted user password that should not be visible in the router configuration. Which two configuration commands resolve the issue? (Choose two.). A. username Admin password Cisco@123. B. service password-encryption. C. username Admin secret Cisco@123. D. password encryption aes. E. no service password-encryption. F. username Admin password 5 Cisco@123.

A customer reports that traffic is not passing on an EIGRP enabled multipoint interface on a router configured as below: Which action resolves the issue?. A. Enable poison reverse. B. Disable split horizon. C. Disable poison reverse. D. Enable split horizon.

Refer to the exhibit. A loop occurs between R1, R2, and R3 while EIGRP is run with poison reverse enabled. Which action prevents the loop between R1, R2, and R3?. A. Enable split horizon. B. Configure R3 as stub receive-only. C. Configure route tagging. D. Configure route filtering.

Refer to the exhibit. An error message "an OSPF-4-FLOOD_WAR" is received on SW2 from SW1. SW2 is repeatedly receiving its own link-state advertisement and flushes it from the network. Which action resolves the issue?. A. Change area 5 to a normal area from a nonstub area. B. Resolve different subnet mask issue on the link. C. Configure Layer 3 port channel on interfaces between switches. D. Resolve duplicate IP address issue in the network.

Which two components are required for MPLS Layer 3 VPN configuration? (Choose two.). A. Use LDP for customer routes. B. Use pseudowire for Layer 2 routes. C. Use a unique RD per customer VRF. D. Use OSPF between PE and CE. E. Use MP-BGP for customer routes.

Refer to the exhibit. Which configuration resolves the IP SLA issue from R1 to the server?. A. R6(config)#ip sla responder. B. R6(config)#ip sla 650 R6(config-ip-sla)#udp-jitter 10.60.60.6. C. R6(config)#ip sla responder udp-echo ipaddress 10.60.60.6 po 5000. D. R6(config)#ip sla schedule 10 life forever start-time now.

A network administrator added a new spoke site with dynamic IP on the DMVPN network. Which configuration command passes traffic on the DMVPN tunnel from the spoke router?. A. ip nhrp registration no-registration. B. ip nhrp registration dynamic. C. ip nhrp registration no-unique. D. ip nhrp registration ignore.

Refer to the exhibit. Which configuration enables OSPF for area 0 interfaces to establish adjacency with a neighboring router with the same VRF?. A. router ospf 1 vrf CCNP network 10.1.1.1 0.0.0.0 area 0 network 10.2.2.2 0.0.0.0 area 0. B. router ospf 1 interface Ethernet1 ip ospf 1 area 0.0.0.0 interface Ethernet2 ip ospf 1 area 0.0.0.0. C. router ospf 1 vrf CCNP interface Ethernet1 ip ospf 1 area 0.0.0.0 interface Ethernet2 ip ospf 1 area 0.0.0.0. D. router ospf 1 vrf CCNP network 10.0.0.0 0.0.255.255 area 0.

Refer to the exhibit. TCP traffic should be reaching host 10.10.10.10/24 via R2. Which action resolves the issue?. A. Allow TCP in the access list with no changes to the route map. B. Add a permit 20 statement in the route map to allow TCP traffic. C. TCP traffic will reach the destination via R2 without any changes. D. Set IP next-hop to 10.10.12.2 under the route-map permit 10 to allow TCP traffic.

A newly installed spoke router is configured for DMVPN with the ip mtu 1400 command. Which configuration allows the spoke to use fragmentation with the maximum negotiated TCP MTU over GRE?. A. ip tcp adjust-mss 1360 crypto ipsec fragmentation mtu-discovery. B. ip tcp adjust-mss 1360 crypto ipsec fragmentation after-encryption. C. ip tcp payload-mtu 1360 crypto ipsec fragmentation after-encryption. D. ip tcp payload-mtu 1360 crypto ipsec fragmentation mtu-discovery.

Refer to the exhibit. During ISP router maintenance, the network produced many alerts because of the flapping interface. Which configuration on R1 resolves the issue?. A. ip verify drop-rate notify hold-down 60. B. snmp trap link-status down. C. snmp trap ip verify drop-rate. D. no snmp trap link-status.

Refer to the exhibit. Reachability between servers in a network deployed with DHCPv6 is unstable. Which command must be removed from the configuration to make DHCPv6 function?. A. ipv6 nd ra suppress. B. address prefix 2001:0:1:4::/64 lifetime infinite infinite. C. ipv6 dhcp server DHCP POOL. D. ipv6 address 2001:0:1:4::1/64.

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 Tunnel1 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 Tunnel1 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 Tunnel1 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. D. R2(config)#interface Tunnel1 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.

Refer to the exhibit. R1 and R2 are configured for EIGRP peering using authentication and the neighbors failed to come up. Which action resolves the issue?. A. Configure a matching lowest key-id on both routers. B. Configure a matching authentication type on both routers. C. Configure a matching key-id number on both routers. D. Configure a matching key-chain name on both routers.

Refer to the exhibit. Mutual redistribution is enabled between RIP and EIGRP on R2 and R5. Which configuration resolves the routing loop for the 192.168.1.0/24 network?. A. R2: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s0 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any R5: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s0 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any. B. R2: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s0 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any R5: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any. C. R2: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192. 168.1.0 access-list 1 permit any R5: router eigrp 10 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s0 ! router rip network 178.1.0.0 redistribute eigrp 10 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any. D. R2: router eigrp 7 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 7 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any R5: router eigrp 7 network 181.16.0.0 redistribute rip metric 1 1 1 1 1 distribute-list 1 in s1 ! router rip network 178.1.0.0 redistribute eigrp 7 metric 2 ! access-list 1 deny 192.168.1.0 access-list 1 permit any.

Which method provides failure detection in BFD?. A. long duration, low overhead. B. short duration, low overhead. C. long duration, high overhead. D. short duration, high overhead.

Refer to the exhibit. R4 is experiencing packet drop when trying to reach 172.16.2.7 behind R2. Which action resolves the issue?. A. Insert a /24 floating static route on R2 toward R3 with metric 254. B. Disable auto summarization on R2. C. Enable auto summarization on all three routers R1, R2, and R3. D. Insert a /16 floating static route on R2 toward R3 with metric 254.

Refer to the exhibit. An engineer must advertise routes into IPv6 MP-BGP and failed. Which configuration resolves the issue on R1?. A. router bgp 64900 no bgp default ipv4-unicast address-family ipv6 unicast redistribute ospf network 2001:DB9::/64. B. router bgp 64900 no bgp default ipv4-unicast address-family ipv6 multicast neighbor 2001:DB8:7000::2 translate-update ipv6 multicast. C. router bgp 65000 no bgp default ipv4-unicast address-family ipv6 unicast network 2001:DB8::/64. D. router bgp 65000 no bgp default ipv4-unicast address-family ipv6 multicast network 2001:DB8::/64.

Refer to the exhibit. The administrator is trying to overwrite an existing file on the TFTP server that was previously uploaded by another router. However, the attempt to update the file fails. Which action resolves this issue?. A. Make the TFTP folder writable by all on the TFTP server. B. Make the package.conf file writable by all on the TFTP server. C. Make the package.conf file executable by all on the TFTP server. D. Make sure to run the TFTP service on the TFTP server.

Refer to the exhibit. A network engineer applied a filter for ISA traffic on OSPFv3 inter area routes on the area 5 ABR to protect advertising the internal routes of area 5 to the business partner network. All other areas should receive the area 5 internal routes. After the respective route filtering configuration is applied on the ABR, area 5 routes are not visible on any of the areas. How must the filter list be applied on the ABR to resolve this issue?. A. in the "in" direction for area 5 on router R1. B. in the "in" direction for area 20 on router R2. C. in the "out" direction for area 20 on router R2. D. in the "out" direction for area 5 on router R1.

Refer to the exhibit. The R2 loopback interface is advertised with RIP and EIGRP using default values. Which configuration changes make R1 reach the R2 loopback using RIP?. A. R1(config)#router rip R1(config-router)#distance 90. B. R1(config)#router eigrp 1 R1(config-router)#distance eigrp 130 120. C. R1(config)#router rip R1(config-router)#distance 100. D. R1(config)#router eigrp 1 R1(config-router)#distance eigrp 120 120.

Refer to the exhibit. A network administrator notices these console messages from host 10.11.110.12 originating from interface E1/0. The administrator considers this an unauthorized attempt to access SNMP on R1. Which action prevents the attempts to reach R1 E1/0?. A. Configure IOS control plane protection using ACL 90 on interface E1/0. B. Create an inbound ACL on interface E1/0 to deny SNMP from host 10.11.110.12. C. Add a permit statement including the host 10.11.110.12 into ACL 90. D. Configure IOS management plane protection using ACL 90 on interface E1/0.

Refer to the exhibit. R6 should reach R1 via R5>R2>R1. Which action resolves the issue?. A. Decrease the cost to 2 between R6-R5-R2. B. Increase the cost to 61 between R2-R3-R1. C. Increase the cost to 61 between R2 and R3. D. Decrease the cost to 41 between R2 and R1.

An engineer failed to run diagnostic commands on devices using Cisco DNA Center. Which action in Cisco DNA Center resolves the issue?. A. Enable Secure Shell. B. Enable APIs. C. Enable CDP. D. Enable Command Runner.

Refer to the exhibit. The static route is not present in the routing table of an adjacent OSPF neighbor router. Which action resolves the issue?. A. Configure a permit 20 statement to the route map to redistribute the static route. B. Configure the next-hop interface at the end of the static route for it to get redistributed. C. Configure the next hop of 10.20.20.1 in the prefix list DMZ-STATIC. D. Configure the subnets keyword in the redistribution command.

Refer to the exhibit. Packets arriving from source 209.165.200.215 must be sent with the precedence bit set to 1, and packets arriving from source 209.165.200.216 must be sent with the precedence bit set to 5. Which action resolves the issue?. A. set ip precedence critical in route-map Texas permit 20. B. set ip precedence critical in route-map Texas permit 10. C. set ip precedence priority in route-map Texas permit 20. D. set ip precedence immediate in route-map Texas permit 10.

Refer to the exhibit. An engineer must redistribute networks 192.168.10.0/24 and 192.168.20.0/24 into OSPF from EIGRP, where the metric must be added when traversing through multiple hops to start an external route of 20. The engineer notices that the external metric is fixed and does not add at each hop. Which configuration resolves the issue?. A. R2(config)#access-list 10 permit 192.168.10.0 0.0.0.255 R2(config)#access-list 10 permit 192.168.20.0 0.0.0.255 ! R2(config)#route-map RD permit 10 R2(config-route-map)#match ip address 10 R2(config-route-map)#set metric 20 R2(config-route-map)#set metric-type type-2 ! R2(config)#router ospf 10 R2(confjg-router)#redistribute eigrp 10 subnets route-map RD. B. R2(config)#access-list 10 permit 192.168.10.0 0.0.0.255 R2(config)#access-list 10 permit 192.168.20.0 0.0.0.255 ! R2(config)#route-map RD permit 10 R2(config-route-map)#match ip address 10 R2(config-route-map)#set metric 20 R2(config-route-map)#set metric-type type-1 ! R2(config)#router ospf 10 R2(config-router)#redistribute eigrp 10 subnets route-map RD. C. R1(config)#access-list 10 permit 192.168.10.0 0.0.0.255 R1(config)#access-list 10 permit 192.168.20.0 0.0.0.255 ! R1(config)#route-map RD permit 10 R1(config-route-map)#match ip address 10 R1(config-route-map)#set metric 20 R1(config-route-map)#set metric-type type-1 ! R1(config)#router ospf 10 R1(config-router)#redistribute eigrp 10 subnets route-map RD. D. R1(config)#access-list 10 permit 192.168.10.0 0.0.0.255 R1(config)#access-list 10 permit 192.168.20.0 0.0.0.255 ! R1(config)#route-map RD permit 10 R1(config-route-map)#match ip address 10 R1(config-route-map)#set metric 20 R1(config-route-map)#set metric-type type-2 ! R1(config)#router ospf 10 R1(config-router)#redistribute eigrp 10 subnets route-map RD.

An engineer notices that R1 does not hold enough log messages to identify the root cause during troubleshooting. Which command resolves this issue?. A. #logging buffered 4096 critical. B. #logging buffered 16000 critical. C. (config)#logging buffered 16000 informational. D. (config)#logging buffered 4096 informational.

Which feature minimizes DoS attacks on an IPv6 network?. A. IPv6 Binding Security Table. B. IPv6 Router Advertisement Guard. C. IPv6 Prefix Guard. D. IPv6 Destination Guard.

Refer to the exhibit. A network administrator must block ping from user 3 to the App Server only. An inbound standard access list is applied to R1 interface G0/0 to block ping. The network administrator was notified that user 3 cannot even ping user 9 anymore. Where must the access list be applied in the outgoing direction to resolve the issue?. A. R2 interface G0/0. B. SW1 interface G1/10. C. R2 interface G1/0. D. SW1 interface G2/21.