Cisco 400-201 Exam Dumps 2021

NEW QUESTION 1
Which two requirements to deploy 6PE and 6VPE solutions are mandatory? (Choose two.)

• A. MPLS is enabled on the core, distribution, and edge devices.
• B. A triple stack is enabled on PE devices.
• C. The network has at least six PE devices.
• D. A dual stack is enabled on all the P and PE devices in a network.

Answer: AD

Explanation: http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/6pe_6vpe.html

NEW QUESTION 2
Which three IP/MPLS feature have been removed form MPLS-TP? (Choose three)

• A. Global and local label
• B. Dual-direction LSP
• C. LSP merging
• D. ECMP
• E. QoS mapping
• F. Protection
• G. PHP

Answer: CDG

NEW QUESTION 3

Refer to the exhibit. All routers are running Cisco IOS software. Which configuration enables PIM Anycast RP on RP1?
A.
Ip msdp peer 10.1.1.2 anycast loopback1 Ip pim rp-address loopback0
B.
ip msdp peer 10.1.1.2
Ip pim rp-address loopback0
!
Router bgp 10
Neighbor 10.1.1.2 remote-as 10
Neighbor 10.1.1.2 update-source loopback1
!
Address-family ipv4 multicast Neighbor 10.1.1.2 active
C.
ip msdp peer 10.1.1.2 connect-source loopback1
Ip msdp originator-id loopback 1 Ip pim rp-address loopback0

Answer:

NEW QUESTION 4

Refer to the exhibit Which PW type is negotiated?

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

Answer: E

NEW QUESTION 5
An operations engineer configured a BGP session between two routers, After deploying the
configuration, the engineer notices that the BGP session cannot be established and he sees an error message in the system log. After the show bgp summary command is issue, the engineer sees in the output that BGP router ID is set to 0.0.0.0 what is the root cause of this issue?

• A. A cease notification message is being sent to the neighbor because neighbor router ID does not match the neighbor configuration
• B. The router did obtain a BGP router I
• C. The bgp router-id command was not foun
• D. The router does have an interface with an IPv4 address assigned that is in the up/up state
• E. The BGP capalility negotiation failed to negotiate the router ID information between BGP neighbors
• F. The router has found a better router ID and it is in the process of switching to the new router ID

Answer: B

NEW QUESTION 6
Refer to the exhibit.

An engineer is viewing the CE1 routing table for CE2 Loopback 0. Each CE runs OSPF with its PE.
Which statement describes why the CE2 Loopback address is installed as an external OSPF route at the CE1 routing table?

• A. PE1 and PE2 have mutual redistribution between OSPF and BGP.
• B. CE2 is configured under OSPF with the command redistribute connected.
• C. CE1 and CE2 are in different areas.
• D. CE1 and CE2 have different OSPF processes.
• E. PE1 and PE2 have different OSPF VRF processes.

Answer: E

NEW QUESTION 7
Which statement about VPLS is true?

• A. All CE devices emulate a bridge
• B. All provider devices emulate a bridge
• C. Hierarchical VPLS reduces signaling overhead
• D. Each PE device emulates a bridge
• E. Each CE device emulates a bridge

Answer: C

Explanation: A hierarchical model can be used to improve the scalability characteristics of VPLS. Hierarchical VPLS (HVPLS) reduces signaling overhead and packet replication requirements for the provider edge.

NEW QUESTION 8
A service provider engineering team must design a solution that supports end-to-end LSPS for multiple IGP domains within different AS numbers. According to RFC 3107, which solution achieves this goal?

• A. LDP and BGP
• B. BGP and Send-label
• C. RSVP and IS-IS or OSPF
• D. RSVP and BGP
• E. mLDP

Answer: B

NEW QUESTION 9
Select the statement that best describes "The cure for Amplification Principle" in the Internet domain, as explained in RFC 3429 (Internet Architectural Guidelines)

• A. None of the above
• B. Amplification is prevented if local changes have only a local effect as opposed to system in which local change have a global effect
• C. Amplification is prevented if global changes have only a local effect as opposed to systems in which global changes have a local effect
• D. Internet domain does not suffer from "The Amplification Principle" as BGP takes care of misbehaving advertisers

Answer: B

Explanation: In the Internet domain, it has been shown that increased interconnectivity results in more complex and often slower BGP routing convergence [AHUJA]. A related result is that a small amount of inter-connectivity causes the output of a routing mesh to be significantly more complex than its input [GRIFFIN]. An important method for reducing amplification is ensure that local changes have only local effect (this is as opposed to systems in which local changes have global effect). Finally, ATM provides an excellent example of an amplification effect: if you lose one cell, you destroy the entire packet (and it gets worse, as in the absence of mechanisms such as Early Packet Discard [ROMANOV], you will continue to carry the already damaged packet).

NEW QUESTION 10
A service provider is using QoS to manage customer traffic over the MPLS backbone. Which three statements about the behavior of each MPLS QoS mode based on QoS policy in the service provider core are true? (Choose three.)

• A. Uniform mode does not change the original CE IP packet markings.
• B. Uniform mode changes the original CE IP packet markings.
• C. Pipe mode does not change the original CE IP packet markings.
• D. Pipe mode changes the original CE IP packet markings.
• E. Short-pipe mode does not change the original CE IP packet markings.
• F. Short-pipe mode changes the original CE IP packet markings.

Answer: BCE

NEW QUESTION 11
What is the minimum hardware configuration of the multishelf Cisco CRS-1 system?

• A. One route processor (RP) card and one modular services card (MSC)
• B. One distributed route processor (DRP) and one S13 fabric card (SFC)
• C. One line card chassis (LCC) and one fabric card chassis (FCC)
• D. One route processor (RP) and one fabric card chassis (FCC)
• E. One line card chassis (LCC) and one S13 fabric card (SFC)

Answer: C

Explanation: 1.4. SP high end product
A minimum of one LCC and one FCC are required to configure a multishelf system.

NEW QUESTION 12
What is the port number of an IPsec Encapsulating Security Payload packet? (ESP)

• A. IP protocol 51
• B. UDP port 50
• C. Ip protocol 50
• D. TCP Port 50
• E. UDP port 51
• F. TCP port 51

Answer: C

NEW QUESTION 13
An ISP provides MPLS L3VPN services and is required to set up a multicast VPN. Which routers will be enabled with MDT to support a multicast VPN?

• A. All service provider routers participating in the multicast VPN.
• B. All service provider route reflectors.
• C. All service provider PE routers.
• D. All service provider P routers.
• E. All service providers P, PE and route reflector routers.

Answer: A

NEW QUESTION 14
Refer to the exhibit.

A home office user sends IP datagrams from the local router, which sends Ethernet datagrams to the DSL modem. The DSL modem encapsulates the Ethernet frames in which frame format before sending them over the physical DSL link to DSLAM?

• A. RFC 1483
• B. PPPoE
• C. PPPoA
• D. IP over ATM

Answer: A

NEW QUESTION 15
Which three IS-IS TLVs floods the MPLS TE resource allocation information through the network?
(Choose three)

• A. Traffic engineering router ID
• B. Extended IP reachability
• C. IS TE reachability
• D. RSVP
• E. Extended IS reachability
• F. Opaque

Answer: ABE

NEW QUESTION 16
What is the main difference between the information displayed on the dspload and the dsptrkutl screens?

• A. The dspload screen is for all trunks; the dsptrkutl screen is for one trunk.
• B. The dspload screen shows the expected traffic; the dsptrkutl screen shows actual traffic.
• C. The information on the dspload screen never changes; the dsptrkutl screen is dynamic
• D. The dspload screen shows historical information; the dsptrkutl screen shows current information.

Answer: B

Explanation: Displays both the used and available bandwidth (both in the transmit and receive directions) for each trunk at the specified node. The "transmit" direction is from the node specified and to the node at the other end of the trunk. In the screen display, the numbers of disabled trunks appear in dim, reverse video on the screen.
dsptrkutl
Displays dynamic utilization information for a specified trunk. The trunk must be upped and added to use this command. The following lists the trunk utilization and terminated connection parameters included in the display. The parameter values are updated according to the specified or default interval and the screen remains displayed until the
DEL key is depressed. Disabled trunks have their trunk number displayed in dim, reverse video on the screen.

NEW QUESTION 17

Refer to the exhibit. Which BGP configuration must be applied to make PE3 use both BGP entries in the Cisco Express Forwarding table?

• A. On PE1,apply nexto-hop-self on both PE2 and PE3 neighbors configuration
• B. On the CE, apply bgp add-path on both PE1 and PE2 neighbors configuration
• C. On PE1, apply route-reflect-client on both PE2 and PE3 neighbors configuration
• D. On PE2, apply bgp advertise-best-external on the PE3 neighbor configuration

Answer: D

NEW QUESTION 18
Which three are optional extensions of the Frame Relay Local Management Interface specification? (Choose three)

• A. Switched virtual circuit
• B. Virtual circuit status
• C. Simple flow control
• D. Multicasting
• E. Permanent virtual circuit

Answer: BCD

Explanation: Optional LMI Extensions:
The LMI specification also defines several optional extensions:
* Global addressing convention
* Multicast capability
* A simple flow control mechanism
* Ability for the network to communicate a PVC's CIR to the subscriber in a Status message
* A new message type that allows the network to announce PVC status changes without prompting from the subscriber Implementors may build any, all, or none of these features into their networks.

NEW QUESTION 19
When will the primary processor core dump run in case of a switchover?

• A. never takes place
• B. periodically
• C. during switchover
• D. after switchover
• E. before switchover

Answer: D

Explanation: In networking devices with redundant processors, the Post-Switchover Core Dump feature uses better software communication techniques between redundant processors to allow the switchover to occur before dumping core information. Not having to wait for dump operations effectively decreases the switchover time between processors. The newly active primary processor runs the core dump operation after switchover ReferencE. http://www.cisco.com/en/US/docs/ios/12_0st/12_0st18/feature/guide/coredump.html