Refer to the exhibit. CE1 is the gateway router into the provider network via PE1. A network operator must inject a default route into OSPF area 0. All devices inside area 0 must be able to reach PE1. Which configuration achieves this goal?
A.
B.
C.
D.
An ISP has an MPLS VPN-based network with 12 PE routers. How many peerings are required between the 12 routers if the engineer has not configured route reflectors?
A60
B66
C78
D84
Refer to the exhibit. Routers R2, R3, R4, and R5 all reside in the same area, with R1 in a different area. R3 is overutilized, and the engineer wants to reduce its CPU load. The engineer configured router R4 to summarize routes that it receives from R5, but R3 is still receiving all of the R5 routes. Which action resolves the issue?
AConfigure the summary routes on R5.
BConfigure R4 as a Level 1-Level 2 router.
CConfigure R2 as a Level 1 router.
DConfigure R3 in a new area.
Refer to the exhibit. Which effect of this configuration is true?
AIt sets the keepalive timer to 30 seconds and the hold timer to 240 seconds.
BIt sets the keepalive timer to 30 milliseconds and the hold timer to 240 milliseconds
CIt sets the hold timer to 30 milliseconds and the keepalive timer to 240 milliseconds
DIt sets the hold timer to 30 seconds and the keepalive timer to 240 seconds
Refer to the exhibit.
After configuring IS-IS on routers R1 and R2, an engineer notices that only the loopback interface at 2000:1::1 /96 is known to router R2. Which change must be made so that only Loopback2 is advertised from R1 to R2?
AConfigure the router isis area1 command under the Loopback0 interface on R1.
BRemove the advertise passive-only command under the IS-IS address family ipv6 configuration
CRemove the ipv6 router isis area1 command under the Loopback2 interface on R1.
DRemove the passive-interface Loopback0 command under the router isis area1 configuration.
An engineer is working to implement segment routing protocol on the customer’s core network. Which step should the engineer take before the segment routing is enabled and is running with BGP?
ASegment routing must be configured with EIGRP
BSegment routing must be configured with ISIS
CMPLS must be configured
DExplicit-null must be configured for all neighbors
Refer to the exhibit.
Routers R1 and R2 reside in AS 65530, which is multihomed to the Internet. A network engineer expects devices in the AS to use R2 to access the Internet, but they are using R1 as the exit point from the AS. Which action corrects the problem?
AAdd a sequence number to the route map to remove the implicit deny.
BChange the route map direction in the neighbor statement to out.
CConfigure the route map with a local preference of 200 or higher.
DRemove the neighbor statements from the address family configuration and activate the neighbor globally on R1.
Refer to the exhibit.
An engineer is configuring service traffic from router R1 to R6 as shown. Which additional configuration must the engineer implement so that the LDP and SR domains will participate and interwork with each other?
ARouter2(config)# segment-routingRouter2(config-sr)# ldp mapping-serverRouter2(config-sr-ms)# prefix-sid-mapRouter2(config-sr-ms-map)#Router2(config-sr-ms-map-af)# 2.2.2.2/32 500 range 4
BRouter2(config)# segment-routingRouter2(config-sr)# sr mapping-serverRouter2(config-sr-ms)# ldp-sid-mapRouter2(config-sr-ms-map)# address-family ipv4Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50
CRouter2(config)# segment-routingRouter2(config-sr)# mapping-serverRouter2(config-sr-ms)# prefix-sid-mapRouter2(config-sr-ms-map)# address-family ipv4Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50
Refer to the exhibit. A network engineer just replaced five routers on this OSPF network. When the routing protocol is brought up, R5 cannot reach routes that originate on R1. The engineer verified that all connected links have established neighbor relationships. R5 reaches routes originating on R3 and R4. Which action resolves the issue?
AConfigure each link to be point-to-point.
BConfigure an OSPF virtual link to bridge Area 0 on routers R3 and R4.
CConfigure automatic neighbor discovery on R1 and R5.
DConfigure OSPF to have a contiguous Area 0.
Refer to the exhibits. A network operator is troubleshooting packet loss seen from the R1 loopback interface to the R2 loopback interface over the core network. The operator is attempting to identify the next leg in the path from PE1. Which interface and label path should the operator investigate next?
APE1 – Gi0/0/0/2 – forwarding label 24001
BPE1 – Gi0/0/0/3 – forwarding label 24002
CPE1 – Gi0/0/0/2 – forwarding label 24002
DPE1 – Gi0/0/0/3 – forwarding label 24001
Which statement about enabling segment routing for IGPs is true?
ASegment routing must first be enabled under then routing process and then globally
BSegment routing must first be enabled globally and then under the routing process
CSegment routing can be enabled only under the routing process
DSegment routing can be enabled only globally
An engineer is troubleshooting slow performance issues on a customer’s network after the last multicast configuration change was applied on it. While checking the running configuration on the router, the engineer notices there are many ip igmp join-group commands applied on several interfaces of the router which caused the high CPU utilization usage. What action must the engineer take to solve this issue?
AConfigure all router interfaces to be process-switched by increasing the query interval
BRemove ip igmp join-group command on all unnecessary interfaces
CRemove unnecessary members from the IGMP group
DConfigure ip igmp static-group command on all interfaces
Refer to the exhibit. While troubleshooting a networking issue, an engineer identified a suboptimal communication issue on route reflector RR2. In the current environment:
• Router A is a non-route-reflector client for RR1 and RR2.
• Routers D and E are directly connected iBGP peers.
• Router F is not an iBGP peer of routers D and E.
Which action resolves the issue?
ARemove the route-reflector configuration on router RR2.
BDisable BGP client-to-client reflection on router RR2.
CEnable next-hop-self for BGP peering on router D.
DEnable next-hop-self for BGP peering on router C.
Refer to the exhibit. This network is deployed with all connected links configured to run IS-IS. The routing protocol is enabled globally on each router, and the network engineer expects full routing information to be shared among all routers. R5 is receiving routes from R4 but is missing routes from R1. Which action corrects the issue so that all routes are shared among the routers?
AConfigure R5 in the same area as R1.
BConfigure all routers to reside in the same area.
CConfigure R1 and R5 as Level 1/Level 2 routers.
DConfigure R3 as a Level 1 /Level 2 router.
What is a characteristic of a segment routing mapping server?
AIt serves multiple VRFs.
BIt applies SID mappings from one IGP instance to another IGP instance.
CIt must be placed in the core of the network.
DIt must have an IGP adjacency.
Refer to the exhibit. After you applied these configurations to routers R1 and R2, the two devices could not form a neighbor relationship. Which reason for the problem is the most likely?
AThe two routers cannot authenticate with one another.
BThe two routers have the same area ID.
CThe two routers have the same network ID.
DThe two routers have different IS-types.
In a PIM-SM environment, which mechanism determines the traffic that a receiver receives?
AThe receiver explicitly requests its desired traffic from the RP on the shared tree.
BThe receiver explicitly requests traffic from a single source, which responds by forwarding all traffic.
CThe RP on the shared tree floods traffic out of all PIM configured interfaces.
DThe receiver explicitly requests traffic from each desired source, which responds by sending all traffic.
Refer to the exhibit. After troubleshooting an OSPF adjacency issue, routers 1, 2, and 3 have formed OSPF neighbor relationships. Which statement about the configuration is true?
ARouter 2 receives a Type 5 LSAs from router 1 for its connected subnets
BRouter 2 uses router 3 as the next hop for 192.168.0.0/24
CRouter 2 uses router 1 as the next hop for 192.168.0.0/24
DRouter 2 receives a Type 7 LSAs from router 3 for its connected subnets
Refer to the exhibit. An engineer has successfully fixed BGP peering issue. R1 has an established eBGP peering with R2 and R3. Which mechanism should the engineer apply in order to steer the traffic correctly?
AThe MED attribute can be applied on R2 to influence R1 to use it as the primary path.
BThe local preference attribute can be applied on R3 to influence AS 65513 to use AS 65515 as the secondary path.
CThe weight attribute can be applied on R2 to influence AS 65513 to use AS 65515 as the primary path.
DThe IGP metric can be manipulated on R1 to allow traffic to be load balanced between R2 and R3.
Refer to the exhibit. Which attribute can router 1 alter so that only other iBGP peers prefer to use 192.168.4.2 as the next hop for route 192.168.3.0/24?
AMED
Blocal preference
Corigin
Dweight
An engineer is troubleshooting a connectivity issue across the MPLS network and is verifying the forwarding behavior of packets. Which table does the engineer look at to verify the forwarding behavior of an IP packet as it enters the MPLS network at the ingress LSR?
ALFIB
BLIB
CRIB
DFIB
Refer to the exhibit. CE1 and CE2 cannot communicate through the service provider BGP peering is established between PE1 and PE2. IS-IS is the only routing protocol running in the service provider core. What step can be done to troubleshoot the issue?
ASwitch the IGPs running in the core from IS-IS to OSPF to support a Cisco MPLS TE tunnel from PE1 to PE2.
BConfigure BGP between CE and PE routers.
CConfirm that IS-IS is running with metric-style narrow.
DVerify the MPLS LSPs.
Which output from the show isis interface command helps an engineer troubleshoot an IS-IS adjacency problem on a Cisco IOS-XR platform?
Ametric
Bpriority
Ccircuit type
Dhello interval
Refer to the exhibit. A network operator must inject a Level 1 route from XR2 (10.16.16.0/24) into the ISIS topology. Which configuration allows the injection in a way that XR3 and XR1 have a valid and working route for 10.16.16.0/24?
A.
B.
C.
D.
A network engineer is troubleshooting OSPF multiarea. Which Cisco IOS XR feature should the engineer use in order to streamline OSPF issue?
Ahierarchical CLI
BDR support for topology management
Crouting process enabled by default on all interfaces
Preview
