cisco 400-201 practice test

Question 1

Refer to the exhibit,

Refer to the exhibit. Which two actions must be applied to provide a seamless MPLS solution that
integrates aggregation and core of the areas of the network by providing scalable end-to-end LSPs?
(Choose two)

• A. Enable VRF lite between core and aggregation links
• B. Extend the IS-IS domain used in the core to the aggregation areas of the network
• C. Deploy BGP between PEs and ASBRs with RFC 3107
• D. Set the next hop for the prefixes advertised by the ABR
• E. Replace Layer 3 VPN services with Layer 2 VPN services

Question 2

Refer to the exhibit.


Refer to the exhibit. Router RR1 is not able to select a best path for prefix 11.11.11.0/24. What is the
root cause of this issue?

• A. The RR1 routing table has no specific route to reach the BGP next hops
• B. BGP Next-Hop Tracking feature is disabled on R02 and R04
• C. R02 and R04 neighbors negotiated via BGP capability a BGP Prefix-based Outbound Route Filtering, which filters 11.11.11.0/24 prefix
• D. Selective BGP next-Hop Route Filtering is enabled, which marks the BGP next hop as unreachable

Question 3

Which three pieces of transmission equipment comprise the GPON network? (Choose three.)

• A. Splitter
• B. ROADM
• C. OA
• D. ONT
• E. Repeater
• F. OADM
• G. OLT

Question 4

Refer to the exhibit.

Refer to the exhibit. There is reachability among all routers. An MPLS TE auto-tunnel mesh is
deployed in all routers. A full mesh auto-tunnel is created successfully among RTB, RTC, RTE, RTD,
and RTF routers. RTA router is able to build an automatic MPLS TE tunnel that has only RTB and RTC
routers as destinations. Why is the RTA router unable to build an automatic MPLS TE tunnel that has
RTE, RTD, or RTF routers as destinations?

• A. IS-IS does not support auto-tunnel mesh groups, only OSPF does, via opaque LSA
• B. Tunnel affinity is not supported for full mesh auto-tunnels
• C. An explicit path identifies the L1L2 routers among RTC, RTE, RTP, and RTF is required
• D. Auto-tunnel mesh groups do not support interarea tunnels

Question 5

Refer to the exhibit.

Refer to the exhibit. Which description of the BGP status between these two routers is true?

• A. The EBGP status is down due to the CoPP applied on R1.
• B. The EBGP status is oscillating between down and established due to the CoPP applied on R2
• C. The EBGP status is down due to the CoPP applied on R2
• D. The EBGP status is established because the CPPr applied on both routers does not affect the BGP peering

Question 6

Which option describes a service function as defined in SDN?

• A. a virtual server
• B. a virtual chain
• C. a virtual network function
• D. a virtual device

Question 7

Which description of SaaS is true?

• A. A service offering on-demand licensed applications for end users
• B. A service offering a software environment in which applications can be build and deployed
• C. A service offering on-demand software downloads
• D. A service offering that allowing developers to build their own applications

Question 8

Which three options are Yang model capabilities? (Choose three)

• A. Formal constraints for configuration validation
• B. Protocol and naming independence
• C. Data structure through modules and submodules
• D. Hierarchal configuration data models
• E. The same structure model as SMI version 2
• F. Syntactic level

Question 9

An operations engineer must implement IPv6 multicast leveraging the multicast group address
FF70::/12. Which two Cisco IOS XE configurations are needed to accomplish this task? (Choose two)

• A. Apply the IPv6 multicast-routing command in all IPv6 routers in the IPv6 multicast domain
• B. Apply the ipv6 mldssm-map enable and ipv6 mldssm-map static commands only on the RP IPv6 router
• C. Apply the ipv6 pim command in all interfaces of all IPv6 routers in the IPv6 multicast domain
• D. Apply the ipv6 pimbsr candidate rp command on the IPv6 routers that announce themselves as RPs and the ipv6 pimbsr candidate bsr command on mapping agent routers only
• E. Apply the IPv6 pim rp-addresses command only on RP ipv6 router

Question 10

Which option is an important advantage of using DS-Lite?

• A. Ability to automate tunneling of IPv4 traffic over IPv6 network without requiring any additional IPv4 address space
• B. Relocate the centralized NAT functionality from the AFTR to the B4 to reduce the amount of state information that requires to be kept on AFTR
• C. Automatic overlay tunneling mechanism that uses the underlying IPv4 network as a NBMA link layer for IPv6
• D. Allow the service provider to rapidly deploy IPv6 in a lightweight and secure manner without requiring upgrades to the existing IPv4 access network infrastructure

Question 11

BGP is used for PE-CE routing protocol and all CEs in the same VPN use the same AS number. Which
command eliminates the need for the service provider to configure the AS override feature in order
to provide full connectivity amongst all CEs in the same VPN?

• A. Neighbor SoO
• B. Maximum-paths ibgp maximum-number
• C. Neighbor internal-vpn-client
• D. Neighbor AS-override

Question 12

BGP is used for PE-CE routing protocol and all CEs in the same VPN use the same AS number. Which
command can be applied on PE router that eliminates the need to configure the AS override feature
for the service provider in order to provide full connectivity amongst all CEs in the same VPN?

• A. Maximum-paths ibgp maximum-number
• B. Neighbor SoO
• C. Neighbor interval-vpn-client
• D. Neighbor allowas-in

Question 13

The network operations center is receiving an excessive number of BFD alerts. This is due to recently
configured high-speed links that result in BGP session teardown. Engineers tried to modify the BFD
timers, but no improvement was noticed. Which action will maximize stability?

• A. Modify the IGP hello timers
• B. Enable the BFD Dampening feature
• C. Fully remove that BFD configuration
• D. Enable the BGP Dampening feature

Question 14

DRAG DROP
Drag and drop the BGP AS configuration or route-reflector characteristic from the left onto the
correct scalability topic on the right

Question 15

Refer to the exhibit.

Refer to the exhibit. Which two label stacks must never be seen on the wire? (Choose two)

• A. Packet 6
• B. Packet 1
• C. Packet 3
• D. Packet 2
• E. Packet 4
• F. Packet 5