cisco 400-201 practice test

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

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

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

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

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

Which ADSL implementation type involves configuring the ATU-R with PPP authentication
information (login and password), which provides session authentication, authorization and
accounting without requiring PPP client on each PC on the subscriber side?

• A. RFC 1483 Rouitng
• B. PPPoA
• C. RFC 1483 Bridge
• D. PPPoE

Which statement about the OSPF incremental SPF feature is true?

• A. If type 1 or type 2 LSA changes occur in the calculating router itself, the full SPF is performed even OSPF incremental SPF is enabled
• B. The OSPF incremental SPF features allows for the system to recomputed only the affected part of the tree when 3 type or type 5 LSA changes
• C. If the OSPF incremental SPF feature is enabled, the entire SPT must be recomputed even when the tree remains unchanged inside of the OSPF area
• D. Routers with incremental SPF enabled and routers with incremental SPF not enabled cannot function in the same domain

Which two options must a service provider consider when adding multicast support to the existing
MPLS L3VPN? (Choose two)

• A. All PEs must be configured as RPs inside of each customer VRF to minimize impact of the RPF lookups
• B. Forwarding customer multicast traffic only via the default MDT optimizes PE utilization
• C. Using data MDT results in a reduction of multicast routing states in the core
• D. Using SSM for data MDT helps to minimize the number of group addresses needed in the core
• E. Bandwidth may be wasted on PEs as a result of only using the default MDT

When considering IoT, which option is the best use case for connecting machines in the
manufacturing environment?

• A. mitigate security threats
• B. reduce setup time
• C. unlock new revenue streams
• D. prevent unplanned downtime

Which two characteristics of the MPLS-TP technology are true?

• A. Point-to-multipoint unidirectional LSP
• B. 1:1, 1+1, and 1:N protection options
• C. Out-of-band OAM
• D. Connection packet switching model
• E. Dynamic control plane