Cisco 400-201 Exam Questions and Answers 2021

NEW QUESTION 1
Two router that run LotherDP have multiple links that connect them to each. Which configuration ensure that the label bindings are not flushed from the LIB if one of the links fails?

• A. The MPLS LDP sync command under router process configuration mode
• B. The mpls ldp autoconfig command
• C. The mpls ip command on an MPLS TE tunnel
• D. The mpls ldp discovery targeted-hello accept command

Answer: A

NEW QUESTION 2
A backbone carrier is approached by an ISP_A which provides L3VPN services. The ISP_A requires MPLS VPN services from the backbone carrier to establish connectivity between the two POPs of the ISP_A Which label protocol should the backbone carrier use to provide the proper connectivity that the ISP_A requires?

• A. L2TPv3
• B. L2TPv2
• C. LDP
• D. GRE
• E. mGRE
• F. BGP

Answer: C

NEW QUESTION 3
Which three of these are major components of an MPLS VPN network? (Choose three)

• A. LDP notification
• B. L2TPv3 session
• C. VPN route target communities
• D. Multiprotocol BGP peering of PE routers
• E. MPLS forwarding

Answer: CDE

NEW QUESTION 4
A client has an MPLS inter-AS implementation that is required to have QoS deployed between ASBRs based on IP packet. At the same time, the client requires minimization of the routing configuration between ASBRs for better scalability. Which MPLS inter-AS option can achieve this goal?

• A. Option A
• B. Option B
• C. Option C
• D. Option AB

Answer: D

NEW QUESTION 5
A network engineer needs to connect two core switches that use Gigabit Ethernet interfaces in an MPLS backbone and that are separated by a distance of 60 km. Which Cisco GBIC achieves this goal?

• A. Cisco 1000BASE-T GBIC
• B. Cisco 1000BASE-SX GBIC
• C. Cisco 1000BASE-LX/LH GBIC
• D. Cisco 1000BASE-ZX GBIC

Answer: D

NEW QUESTION 6
Which technology enables operations to move the functionality of networking devices such as routers and firewalls away from proprietary hardware to servers and off-the-shelf commercially available purpose-built hardware?

• A. Network Function Virtualization
• B. Business support systems
• C. Software Defined Networking
• D. Operations support systems
• E. OpenStack

Answer: A

NEW QUESTION 7
Which technology encapsulates customer Ethernet frames with a service provider MAC header?

• A. VPLS
• B. Q-in-Q
• C. MAC-in-MAC
• D. EVPN

Answer: C

NEW QUESTION 8
Which two options are characteristics of MoFRR? ( Choose two)

• A. Uses additional PIM join toward source
• B. Based on multicast forward error correction feature
• C. Based on PIM Fast Route
• D. Requires MPLS TE FRR enabled with link protection and node protection
• E. Utilizes two equal-cost paths toward source

Answer: AE

NEW QUESTION 9
What are the three building blocks of the Cisco VPLS architecture? (Choose three.)

• A. L2VPN
• B. Ethernet Virtual Switch Interface
• C. VLAN Trunk Protocol
• D. State Synchronization Protocol
• E. Label Distribution Protocol
• F. Resource Reservation Protocol

Answer: ABE

NEW QUESTION 10
A content provider uses ISP-A and ISP-B for Internet transit service for the purpose of redundancy and load balancing. The content provider has one address range assigned to it. Which two techniques achieve the load balancing and redundancy for inbound traffic? (Choose two)

• A. BGP Local-preference attribute
• B. BGP MED attribute
• C. Use ISP-A for outbound traffic and ISP-B for inbound traffic
• D. BGP AS-prepend technique
• E. Address range split into two more specific prefixes, then advertise one specific prefix per ISP
• F. Aggregate all prefixes received from both ISPs into a less-specific prefix

Answer: DE

NEW QUESTION 11
Which option is the benefit of per-link LFA over per-prefix LFA?

• A. It has a greater applicability
• B. It provides greater protection coverage
• C. It is simpler
• D. It enables better bandwidth utilization

Answer: C

NEW QUESTION 12
Refer to the exhibit.

XYZ is using the BSR method and PE1 has the configuration shown.

• A. Which statement describes why PE1 is unable to receive RP information from XYZ site 2?
• B. IPv4 MDT address family is not activated between PE1 and PE2.
• C. Loopback 3 is not enabled with PIM.
• D. A mismatch exists for update source interface between PE1 and PE2.
• E. A mismatch exists in MDT data subnet for XYZ VRF between PE1 and PE2.

Answer: B

NEW QUESTION 13
A service provider is considering investing in a services chaining solution. Which three services chaining’s can be recommended? (Choose two)

• A. Firewall
• B. Authoritative DNS
• C. ACGNAT
• D. WAAS
• E. VXLA
• F. Email

Answer: AC

NEW QUESTION 14

Refer to the exhibit. A network engineer has a requirement to enable MPLS TE tunnels on the network to be L3VPN customers. Which MPLS TE feature allow the network engineer to configure MPLS TE LSPs by using a few CLI commands?

• A. AutoTunnel Mesh Groups on all P and PE routers
• B. AutoTunnel Primary and Backup on all PE routers
• C. AutoTunnel Primary and Backup on all P and PE routers
• D. AutoTunnel Mesh Groups on all PE routers

Answer: D

NEW QUESTION 15
Which three of these options can be a forwarding equivalence class? (Choose three.)

• A. groups of IP addresses
• B. bridge or switch instance
• C. traffic engineering tunnel
• D. IPsec tunnel
• E. routing equivalence paths
• F. a bgp prefix

Answer: ABC

NEW QUESTION 16
In the Dual Stack lite solution, what is the function of the B4 component?

• A. It acts as an endpoint for the IPv6 in IPv4 encapsulation and forwarding
• B. It decapsulates the tunneled IPV4 packets, translate the network address, and routes to the IPv4 network
• C. It encapsulates the customer IPv4 packets using IPv6 tunnel and second to the AFTR
• D. It reverses network address translated of the eipv4 packets coming from the internet and it sends the resultant IPv4 packets to AFTR

Answer: C

NEW QUESTION 17
Which three options are reasons to deploy BFD? (Choose three.)

• A. BFD is a fast hello protocol that exhibits lower overhead than aggressive hellos.
• B. BFD is a fast hello protocol that provides reaction time under a second.
• C. BFD is a fast hello protocol that provides reaction time over a second.
• D. BFD provides fast converges to Layer 2 bundling protocol LAGs.
• E. HSRP protocol supports BFD.
• F. BFD uses a reliable transport for Hello packets, which increases the fast converge if an ACK is not received.

Answer: ABE

NEW QUESTION 18
Which two statements about VPNv4 address are true? (Choose two.)

• A. The VPNv4 address is 128 bits long with a 128-bit long subnet mask
• B. The VPNv4 address consists of an RD and an IPv4 address.
• C. The VPNv4 address is 96 bits long with a 64-bit long subnet mask.
• D. The VPNv4 address is 128 bits long with a 64-bit long subnet mask.
• E. The VPNv4 address consists of an RT and an IPv4 address.
• F. The VPNv4 address is 96 bits long with a 32-bit long subnet mask

Answer: BF

NEW QUESTION 19
Which description of the main purpose of the LDP targeted Session is true?

• A. To improve the label convergence time for directly connected LSRs by maintaining the session up when the link between LSRs by maintaining the session up when the link between LSRs down
• B. To prevent traffic from being black-holed by building a MPLS forwarding table depending on the IP routing protocol in use
• C. To establish an adjancency before exchanging network information to avoid keepalive messages being dropped during heay network traffic event
• D. To provide the means for LSR to request and release label prefix binding information topeers routers

Answer: A