Cisco 300-510 Practice Test - Questions Answers, Page 12
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What is the difference between basic IS-IS and OSPF packet types?
IS-IS and OSPF use area packets, but only IS-IS uses sequence number packets.
IS-IS and OSPF use link-state update packets, but only OSPF uses link-state ACK packets.
IS-IS and OSPF use Hello packets, but only OSPF uses DBD packets.
IS-IS and OSPF use link-state update packets, but only IS-IS uses DBD packets.
Refer to the exhibit
Router R1 is configured to advertise outgoing SA messages to routers R2 and R3, but to receive incoming SA messages only from R2. Which additional configuration must an engineer apply to router R1 so it filters all MSDP SA messages from Domain-C?
R1# ip msdp sa-filter in 192.168.3.1
R3# ip msdp sa-filter out 192.168.3.1
R3# ip msdp password peer 192.168.1.1
R1# ip msdp password peer 192.168.3.1
What is the difference between a source tree and a shared tree in a multicast environment?
To route traffic from source to receiver a source tree uses a link-state routing protocol and a shared tree uses a distance-vector routing protocol.
A source tree has its root at the source, and a shared tree has its root at a designated rendezvous point.
To stream multicast from source to receiver, a source tree uses PIM-SM and a shared tree uses PIM-DM.
Source trees are the default type for bidirectional PIM. and PIM-DM uses shared trees by default.
Refer to the exhibit.
R3 is:
failing to accept multicast RP information from Domain-A advertising MSDP SA messages to R1 and R4 receiving SA messages only from R4 Which command must the engineer implement to resolve the issue?
A R3# ip msdp sa-filter in 192.168.3.1
R3# no ip msap sa-filter in 192.168.1.1
C R3# no ip msdp peer 192.168.1.1
R3# ip msdp sa-filter out 192.168.1.1
Refer to the exhibit.
R1 is expected to receive routes originating from AS 65516 and from any ASs that are directly attached to it. However, R1 is receiving routes only from AS 65516. Which action corrects the configuration?
Change the regular expression in the AS-path permit filter to .*.
Change the regular expression in the AS-path permit filter to ^65516_[0-9]*$.
Add the regular expression ^$. in the AS-path filter to permit the traffic from R2.
Change the regular expression in the AS-path permit filter to _65516_.
Refer to the exhibit.
An engineer is troubleshooting IS-IS configuration between two areas. IS-IS Area-A network 30.1.1.0/24 is leaked into IS-IS Area-?. R2 is failing to filter the route updates from network 10.1.1.0/24. Which configuration must the engineer apply to resolve the issue?
A. R2(config)# ip prefix-list List2 seq 5 deny 10.1.1.0/24
R2(config)# interface fastethernet 0/0
R2(config-if)# ip router isis 100
R2(config-if)# router isis 100
R2(config-router)# distribute-list gateway List2 in
R2(config)# ip prefix-list List1 seq 3 deny 10.1.1.0/24
R2(config)# ip prefix-list List1 seq 5 permit 30.1.1.0/24 ge 25 1e
R2(config)# ip prefix-list List1 seq 10 permit 0.0.0.0/le 32
R2(config)# interface fastethernet 0/0
R2(config-if)# ip router isis 122
R2(config-if)# router isis 122
R2(config-router)# distribute-list prefix List1 in
R1(config)# ip prefix-list List2 seq 5 deny 10.1.1.0/24
R1(config)# interface fastethernet 0/0
R1(config-if)# ip router isis 100
R1(config-if)# router isis 100
R1(config-router)# distribute-list gateway List2 in
R (config-if)# router isis 150
R1(config-router)# distribute-list route-map Map1 in
R2(config)# access-list 101 deny ip any 10.1.1.0 0.0.0.127
R2(config)# access-list 101 permit ip any 30.1.1.0 0.0.0.63
R2(config)# access-list 101 deny ip any 0.0.0.0 0.0.0.0
R2(config)# interface fastethernet 0/0
R2(config-if)# ip router isis 121
R2(config-if)# router isis 121
R2(config-router)# distribute-list 101 in
Which keyword is used with the match route-type command to redistribute the external BGP and IGP routes using route map?
match route-type type-1
match route-type nssa-external
match route-type type-2
match route-type external
Refer to the exhibit.
CE1 and CE2 are iBGP neighbors in AS 65516. All traffic that exits AS 65516 must use the link from CE1 to PE1. CE1 is advertising a higher local preference to CE2, but traffic from CE2 still prefers the PE2 link. Which action corrects the problem?
Add the lower local-preference value on PE2 towards CE2.
Configure CE1 to send routes to CE2 with a higher MED.
Configure CE1 to send routes to CE2 with a higher weight.
Add the next-hop self command to the CE1 neighbor statement for CE2.
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?
Add a sequence number to the route map to remove the implicit deny.
Change the route map direction in the neighbor statement to out
Configure the route map with a local preference of 200 or higher.
Remove the neighbor statements from the address family configuration and activate the neighbor globally on R1.
What is the role of a segment routing mapping server?
It advertises a local SID mapping policy to all of the mapping clients
It works with IGP instances to calculate the prefix-SIDs in the absence of a mapping policy
It selects multiple mapping entries to create overlapping active mapping policies
It reads and translates remotely received SIDs from other mapping servers to create SID mapping entries
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