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Q91. Refer to the exhibit. 

Which statement about this IP SLA is true? 

A. The SLA must also have a schedule configured before it will start. 

B. The TTL of the SLA packets is 10. 

C. The SLA has a timeout of 3.6 seconds. 

D. The SLA has a lifetime of 5 seconds. 

Answer:

Explanation: 

When you configure an IP SLAs operation, you must schedule the operation to begin capturing statistics and collecting error information. You can schedule an operation to start immediately or to start at a certain month, day, and hour. You can use the pending option to set the operation to start at a later time. The pending option is an internal state of the operation that is visible through SNMP. The pending state is also used when an operation is a reaction (threshold) operation waiting to be triggered. You can schedule a single IP SLAs operation or a group of operations at one time. We can see in this output that the IP SLA is still in a pending trigger state. 

Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/44sg/configuration/guide/Wrapper-44SG/swipsla.html 


Q92. Refer to the exhibit. 

Which statement is true? 

A. There is an MPLS network that is running 6PE, and the ingress PE router has no mpls ip propagate-ttl. 

B. There is an MPLS network that is running 6VPE, and the ingress PE router has no mpls ip propagate-ttl. 

C. There is an MPLS network that is running 6PE or 6VPE, and the ingress PE router has mpls ip propagate-ttl. 

D. There is an MPLS network that is running 6PE, and the ingress PE router has mpls ip propagate-ttl. 

E. There is an MPLS network that is running 6VPE, and the ingress PE router has mpls ip propagate-ttl. 

Answer:

Explanation: 

The second hop shows and IPV6 address over MPLS, so we know that there is an MPLS network running 6PE or 6VPE. And because the second and third hops show up in the traceroute. Then TTL is being propagated because if the “no ip propagate-ttl” command was used these devices would be hidden in the traceroute. 


Q93. Refer to the exhibit. 

ICMP Echo requests from host A are not reaching the intended destination on host B. What is the problem? 

A. The ICMP payload is malformed. 

B. The ICMP Identifier (BE) is invalid. 

C. The negotiation of the connection failed. 

D. The packet is dropped at the next hop. 

E. The link is congested. 

Answer:

Explanation: 

Here we see that the Time to Live (TTL) value of the packet is one, so it will be forwarded to the next hop router, but then dropped because the TTL value will be 0 at the next hop. 


Q94. Which two statements about IPsec VTI implementation are true? (Choose two.) 

A. The IKE SA can be bound to the VTI and the crypto map. 

B. The transform set can be configured only in tunnel mode. 

C. SVTIs support only a single IPsec SA. 

D. SVTIs support IPv4 packets that carry IPv6 packets. 

Answer: B,C 


Q95. Refer to the exhibit. 

Which two statements are true about the displayed STP state? (Choose two.) 

A. The STP version configured on the switch is IEEE 802.1w. 

B. Port-channel 1 is flapping and the last flap occurred 1 minute and 17 seconds ago. 

C. The switch does not have PortFast configured on Gi0/15. 

D. BPDUs with the TCN bit set are transmitted over port channel 1. 

Answer: C,D 

Explanation: 

A port enabled with portfast will not send topology changes when a port goes up or down, but here we see that 296 TCN’s were sent so we know that Gi 0/15 does not have portfast enabled. 

TCN’s are sent using BPDU’s over the root port, which we see is port channel 1. 


Q96. Which two statements about the passive-interface command are true? (Choose two.) 

A. A RIP router listens to multicast updates from its neighbor but stops sending multicast updates on the passive interface. 

B. In OSPF, configuring passive-interface at the interface level suppresses hello packets for the interface and all sub interfaces. 

C. An EIGRP router can form neighbor relationship on the passive interface, but incoming and outgoing multicast updates are disabled on the interface. 

D. A RIP router disables all incoming and outgoing multicast updates in the passive interface. 

E. In EIGRP, the passive interface stops sending hello packets. 

F. In OSPF, the passive interface can receive incoming routing updates and update the device routing table. 

Answer: A,E 


Q97. Which statement describes Cisco PfR link groups? 

A. Link groups enable Cisco PfR Fast Reroute when NetFlow is enabled on the external interfaces of the border routers. 

B. Link groups define a strict or loose hop-by-hop path pReference: 

C. Link groups are required only when Cisco PfR is configured to load-balance all traffic. 

D. Link groups are enabled automatically when Cisco PfR is in Fast Reroute mode. 

E. Link groups set a preference for primary and fallback (backup) external exit interfaces. 

Answer:

Explanation: 

The Performance Routing - Link Groups feature introduced the ability to define a group of exit links as a preferred set of links, or a fallback set of links for PfR to use when optimizing traffic classes specified in an PfR policy. PfR currently selects the best link for a traffic class based on the preferences specified in a policy and the traffic class performance—using parameters such as reachability, delay, loss, jitter or MOS—on a path out of the specified link. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios/pfr/configuration/guide/15_1/pfr_15_1_book/pfr-link-group.html 


Q98. Which three statements about IPsec VTIs are true? (Choose three.) 

A. IPsec sessions require static mapping to a physical interface. 

B. They can send and receive multicast traffic. 

C. They can send and receive traffic over multiple paths. 

D. They support IP routing and ACLs. 

E. They can send and receive unicast traffic. 

F. They support stateful failover. 

Answer: B,D,E 


Q99. Refer to the exhibit. 

Which option is the result of this configuration? 

A. All SNMP traffic coming into the router is redirected to interface GigabitEthernet1/0. 

B. All SNMP traffic generated from the router is redirected to interface GigabitEthernet1/0. 

C. All SMTP traffic generated from the router is redirected to interface GigabitEthernet1/0. 

D. All POP3 traffic coming into the router is redirected to interface GigabitEthernet1/0. 

E. All SMTP traffic coming into the router is redirected to interface GigabitEthernet1/0. 

Answer:

Explanation: 

This is an example of policy based routing, where traffic sourced from this router that matches the access list (all traffic with port 25 which is SMTP) will be forced out the Gig 0/1 interface. 


Q100. Which statement is true about MLD? 

A. MLD v1 gives hosts the ability to receive multicast packets from specific source addresses. 

B. All MLD messages are sent with a link-local IPv6 source address of FF02::D. 

C. The multicast address field is cleared to zero when sending an MLD report message. 

D. MLD is used by IPv6 routers to discover multicast listeners on a directly attached link. 

Answer:

Explanation: 

IPv6 Multicast Listener Discovery (MLD) is used by IPv6 devices to discover multicast listeners (nodes that want to receive multicast packets destined for specific multicast addresses) on directly attached links. There are two versions of MLD. MLD version 1 is based on version 2 of the IGMP for IPv4, and MLD version 2 is based on version 3 of the IGMP for IPv4. IPv6 multicast for Cisco software uses both MLD version 2 and MLD version 1. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_lsm/configuration/xe-3s/imc-lsm-xe-3s-book/ipv6-mcast-mld-xe.html