300-510 Practice Exam Tests Latest Updated on Sep-2021
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NEW QUESTION 45
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?
- A. origin
- B. MED
- C. weight
- D. local preference
Answer: B
NEW QUESTION 46
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?
- A. The local preference attribute can be applied on R3 to influence AS 65513 to use AS 65515 as the secondary path.
- B. The weight attribute can be applied on R2 to influence AS 65513 to use AS 65515 as the primary path.
- C. The IGP metric can be manipulated on R1 to allow traffic to be load balanced between R2 and R3.
- D. The MED attribute can be applied on R2 to influence R1 to use it as the primary path.
Answer: C
NEW QUESTION 47
Refer to the exhibit.
Routers R1 and R2 cannot form a neighbor relationship, but the network is otherwise configured correctly and operating normally. Which two statements describe the problem? (Choose two.)
- A. The two routers have the same network ID
- B. The two routers are in different subnets
- C. The two routers have password mismatch issues
- D. The two routers are in the same area
- E. The two routers are in different areas
Answer: B,E
NEW QUESTION 48
Which two statements about route reflectors are true? (Choose two.)
- A. Routes received from nonclient peers are reflected to route reflector cluster as well as OSPF peers.
- B. If a route reflector receives a route with a cluster-list attribute containing a different cluster ID, the route is discarded.
- C. Routes received from a route reflector client is reflected to other clients and nonclient peers.
- D. If a router received an iBGP route with the originator-ID attribute set to its own router ID, the route is discarded.
- E. Routes received from nonclient peers are reflected to route reflector clients as well as nonclient peers.
Answer: C,D
Explanation:
Reference:
http://www.networkers-online.com/blog/2009/02/bgp-route-reflector-basics/
NEW QUESTION 49
Refer to the exhibit.
P1 and PE3 Cisco IOS XR routers are directly connected and have this configuration applied. The BGP session is not coming up. Assume that there is no IP reachability problem and both routers can open tcp port 179 to each other. Which action fixes the issue?
- A. Configure the send and accept lifetime under key 1
- B. Change HMAC-MD5 to MD5
- C. Change HMAC-MD5 to HMAC-SHA1-20
- D. Change HMAC-MD5 to HMAC-SHA1-12
Answer: A
NEW QUESTION 50
Refer to the exhibit.
An engineer is addressing an IS-IS design issue which is running within the topology. All links are running on FastEthernet, except the link between R5 and R4, which is Gigabit Ethernet. Which statement about the design is true?
- A. All links have equal cost if the default metric is used
- B. R5 prefers to use R4 as the next hop for all routes
- C. R1 prefer to use R5 as the next hop to reach R4
- D. R4 prefer to reach R5 using R1 as the next hop
Answer: A
NEW QUESTION 51
Refer to the exhibits.
All links inside the network are configured at a default cost of one inside the fully converged OSPF domain.
Given the configuration from XR1, which interface does traffic from XR1 that is destined to the loopback interface of XR6 select for the exiting interface?
- A. Interface GigabitEthernet 0/1. The tie breaker of the node index priority is lower and trumps the path cost.
- B. Interface GigabitEthernet 0/1. The tie breaker of the path cost being lower. The node index priority does not impact this selection process.
- C. Interface GigabitElhemet 0/0. The tie breaker of the node index priority is lower and trumps the path cost.
- D. Interface GigabitEthernet 0/0. The tier breaker of the path cost being lower. The node index priority does not impact this selection process.
Answer: C
NEW QUESTION 52
Refer to the exhibit.
Which tree does multicast traffic follow?
- A. shared tree
- B. source tree
- C. MDT default
- D. MDT voice
Answer: C
NEW QUESTION 53 
Refer to the exhibit. XR1 and XR2 are sending the prefix 10.11.11.0/24 to XR3. A configured policy on XR1 is incorrectly prepending AS path 11 11 12 12 onto this prefix. A network operator wants to add a policy onto XR3 that will not allow the falsely prepending prefix from being installed. Which policy configuration applied to the XR3 neighbor configuration for XR1 can accomplish this requirement without impact to other or future received routes?
- A.
- B.
- C.
- D.
Answer: D
Explanation:
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-1/routing/command/reference/ b_routing_cr41crs/b_routing_cr41crs_chapter_01000.html#wp3850885229
NEW QUESTION 54
Refer to the exhibit. Which LSA type is indicated by this router output?
- A. type 4 LSA
- B. type 3 LSA
- C. type 1 LSA
- D. type 2 LSA
Answer: C
NEW QUESTION 55
Refer to the exhibit.
P1 and PE3 Cisco IOS XR routers are directly connected and have this configuration applied. The BGP session is not coming up. Assume that there is no IP reachability problem and both routers can open tcp port 179 to each other. Which action fixes the issue?
- A. Configure the send and accept lifetime under key 1
- B. Change HMAC-MD5 to MD5
- C. Change HMAC-MD5 to HMAC-SHA1-20
- D. Change HMAC-MD5 to HMAC-SHA1-12
Answer: A
NEW QUESTION 56
Which two routing protocols have extensions capable of running SRv6? (Choose two.)
- A. IGRP
- B. OSPF
- C. EIGRP
- D. BGP
- E. RIP
Answer: B,D
NEW QUESTION 57
Which statement about enabling segment routing for IGPs is true?
- A. Segment routing must first be enabled under then routing process and then globally
- B. Segment routing can be enabled only globally
- C. Segment routing can be enabled only under the routing process
- D. Segment routing must first be enabled globally and then under the routing process
Answer: D
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/seg_routing/configuration/xe-16-6/segrt-xe-16-6- book/sr-ospfv2-node-sid.html
NEW QUESTION 58
Which command is used to enable BIDIR-PIM under global configuration mode for Cisco IOS XE Sofware?
- A. ipv4 pim bidir-enable
- B. ip multicast-routing
- C. ip pim bidir-enable
- D. ip pim bidir
Answer: C
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/xe-3s/imc-pim-xe-3sbook/imc_basic_cfg.html
NEW QUESTION 59
What are two differences between OSPF and IS-IS? (Choose two.)
- A. Unlike IS-IS routers, an OSPF router belongs to only one area in addition to the backbone area.
- B. OSPF is a link-state routing protocol, and IS-IS is a distance-vector routing protocol.
- C. OSPF elects a DR and a BDR, and IS-IS elects a DIS.
- D. Unlike OSPF. IS-IS supports virtual links.
- E. OSPF uses a router ID to identify a router, and IS-IS uses a system ID.
Answer: C,E
NEW QUESTION 60 
Refer to the exhibit. A network operator wants to expand the segment routing global block in upcoming maintenance. The operator must ensure that the changes to the segment routing global block have no adverse impacts on the prefix-sid associated with the loopback0 interface used within the OSPF domain. Which command can the operator use to enforce R2 to have a strict prefix-sid assignment to loopback0?
- A.
- B.
- C.
- D.
Answer: B
NEW QUESTION 61
Refer to the exhibit.
Why is neighbor 10.1.5.5 stuck in "2WAY" state?
- A. OSPF parameters (Area ID or hello interval) are mismatched between R2 and 10.1.5.5
- B. OSPF authentication has failed between R2 and 10.1.5.5
- C. It is an expected behavior when OSPF network type is broadcast
- D. Router ID 10.1.5.5 is not reachable from R2
Answer: C
NEW QUESTION 62
Refer to the exhibit.
What is the relationship between Router 1 and Router 2?
- A. Router 1 and Router 2 centrally learn the topology of the network to aid in SR-TE path selection for peers.
- B. Router 2 is the head-end router in an SR-TE tunnel, and it is learning topology of the network from the PCE enabled on Router 1.
- C. Router 1 and Router 2 are participating in SR-TE tunnels and are both head-end routers.
- D. Router 1 centrally learns the topology of the network to aid in SR-TE path selection, and Router 2 is a node that feeds Router 1 topology information.
Answer: B
NEW QUESTION 63
Refer to the exhibit.
Router 1 has established an SR-TE tunnel with router 2. Which statement describes this configuration?
- A. Router 1 is the head-end tunnel and has dynamically chosen a path to router 2.
- B. Router 1 and router 2 have a bidirectional tunnel set up with dynamic path selection.
- C. Router 2 is the head-end tunnel and has explicitly set a path to router 1.
- D. Router 1 has a list of labels used to explicitly lay out a path to router 2.
Answer: A
NEW QUESTION 64
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?
- A. Configure ip igmp static-group command on all interfaces
- B. Configure all router interfaces to be process-switched by increasing the query interval
- C. Remove ip igmp join-group command on all unnecessary interfaces
- D. Remove unnecessary members from the IGMP group
Answer: C
NEW QUESTION 65
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?
- A. The local preference attribute can be applied on R3 to influence AS 65513 to use AS 65515 as the secondary path.
- B. The weight attribute can be applied on R2 to influence AS 65513 to use AS 65515 as the primary path.
- C. The IGP metric can be manipulated on R1 to allow traffic to be load balanced between R2 and R3.
- D. The MED attribute can be applied on R2 to influence R1 to use it as the primary path.
Answer: C
NEW QUESTION 66
Refer to the exhibit.
An engineer applied the summarization configuration on R1 for four networks (192.168.20.0/24 to 192.168.23.0/24) in area 1 and eight networks (192.168.32.0/24 to 192.168.39.0/24) in area 2 to stop the flooding of all the customer routes. While checking the routing table of R2, the engineer noticed that R1 is still sending only specific routes to R2. Which configuration should the engineer apply on R1 to summarize routes?
- A. Option D
- B. Option C
- C. Option A
- D. Option B
Answer: B
NEW QUESTION 67
After changing the IP address on an IOS XR router, an engineer cannot ping the new address Which step did the engineer forget to complete?
- A. roll back the configuration
- B. commit the configuration
- C. save the running configuration
- D. merge the configuration
Answer: B
NEW QUESTION 68
Refer to the exhibit.
Routers RA and RB are IS-IS peers configured for NSF but router RC is an IS-IS peer without NSF capability If RA undergoes processor switchover what is the effect on the network environment?
- A. If RC is operating without the Cisco configuration option only 2 routers tear down their peering relationships and re-establish peering
- B. If RC is operating without the Cisco configuration option all three routers tear down their peering relationships and re-establish peering
- C. All peer relationships remain up, but the link-state database is rebuilt on each device
- D. All peer relationships remain up and the link-state database is unchanged
Answer: C
NEW QUESTION 69
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