Most Accurate Cisco 400-101 Exam Q&A Online

Question No. 1

Which values does EIGRP use to determine the metric for a summary address?

• A. a default fixed value
• B. the average of the component metrics
• C. the lowest metric among the component routes
• D. the highest metric among the component routes

Question No. 2

When you deploy DMVPN, what is the purpose of the command crypto is a kmp key ciscotest address 0.0.0.0 0.0.0.0?

• A. It is configured on hub and spoke router to establish peering
• B. It is configured on hub to set the pre-shared key for the spoke routers
• C. It is configured on the spokes to indicate the hub router
• D. It is configured on the Internet PE routers to allow traffic to traverse the ISP core

Question No. 3

Which three fields are part of a TCN BPOU? (Choose three.)

• A. protocol ID
• B. version
• C. type
• D. max-age
• E. flags
• F. message age

Question No. 4

Which PIM multicast type requires IGMPv3 and operates without using rendezvous point messages?

• A. PIM-DM
• B. PIM-SM
• C. SSM
• D. BIDIR-PIM

Question No. 5

Which two statements about MST are true? (Choose two.)

• A. An MSTI is a single PVST instance.
• B. BPDUs carry VLAN-to-instance mapping information to switches in the same region.
• C. An MIST region is defined by its name, configuration revision, and VLAN-to-instance mapping table.
• D. Each MSTI sends its own independent BPDUs
• E. In an MST region, switches run a single IST and zero or more additional MSTIs.

Question No. 6

Which queuing strategy ignores packet markings?

• A. CQ
• B. FIFO
• C. LLQ
• D. WFQ
• E. WRED
• F. CBWFQ

Question No. 7

Which action does a switch running OpenFlow take when it receives a packet that does not match its flow entry?

• A. Drop the packet
• B. Transfer the packet
• C. Reject the packet
• D. Flood the packet
• E. Forward the packet to the controller

Question No. 8

Refer to the exhibit.

What are two effects of the given configuration? (Choose two)

• A. The router will advertise the 172.16.1.1/32 network.
• B. The router will stop sending hello packets on Loopback.1.
• C. The router will advertise the 192.168.12.0/24 network.
• D. The router will send hello packets from Loopback0.
• E. The router will advertise the 172 16.11.11/32 network
• F. The router will stop sending and receiving IS-IS packets on Loopback0.

Question No. 9

Which two statements about OSPF route filtering are true? (Choose two )

• A. lt can be based on the external route tag
• B. It affects LSA flooding
• C. It can be based on distance
• D. It can be based on the as-path
• E. It can be based on the source router ID.

Question No. 10

How does MSTP maintain compatibility with RSTP?

• A. RSTP encodes region information from an MSTP BPDU into a single instance.
• B. MSTP supports five port states in the same way as RSTP.
• C. MSTP sends all spanning-tree information in one BPDU.
• D. RSTP implements a TTL that is compatible with the MSTP max age timer

Question No. 11

Refer to the exhibit.

You must modify the Cisco IOS Layer 3 switch configuration for high availability operation. Which additional configuration is needed, if any?

• A. Modify the configuration to use VRRP, which has additional functionality that works better for high availability.
• B. This configuration is sufficient for high availability functionality.
• C. Enable HSRP preempt to force the primary Layer3 switch to resume the master role after a failure.
• D. Enable SHRP preempt a delay to allow time for the routing and switching to converge.

Question No. 12

You have been asked to connect a remote network with different DSCP mappings to the primary network of your organization. How can you configure the network devices so that the two networks work together seamlessly?

• A. Configure a mutation map on the devices on the primary network that connect to the network
• B. Configure the mis qos trust command on the trunk ports that interconnect two networks
• C. Configure an aggregate policer on the ingres interfaces of the trunk ports that interconnect the two networks
• D. Configure VLAN-based Qos on all switchs on both networks

Question No. 13

Which two statements about 6PE are true? (Choose two.)

• A. It does not require MPLS between the PE routers.
• B. It requires BGP to exchange labeled IPv6 unicast between PE routers.
• C. iBGP peering between the PE routers should be done using an IPv6 address.
• D. Uses an IPv4-mapped IPv6 address as the IPv4 next-hop on PE router.
• E. It requires a VRF on the IPv6 interface.

Question No. 14

Which two IP packet types always traverse to the route processor CPU? (Choose two)

• A. Data-plane packets
• B. Forwarding-plane packets
• C. Control-plane packets
• D. Services-plane packets
• E. Management-plane packets

Question No. 15

Which two statements correctly describe MLD snooping? (Choose two.)

• A. Global configurations override VLAN configurations.
• B. It can be enabled on VLANs 1 through 1001 only
• C. It is independent of IGMP snooping
• D. VLAN query values override global values
• E. It can be disabled globally and then enabled on individual VLANs