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Cisco 400-201 Exam PDF Study Syllabus

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Question No. 1

A service provider is running a single-area OSPFv2 instance in the MPLS network. The OSFP reconvergence time is becoming excessively slow as the service provider MPLS network grows. Which two action can improve network performance without implementing a multimedia design? (Choose two)

Answer: A, E

Question No. 2

What is the effect of turning on all available downstream carrier tones in a DMT DSL transmission systems?

Answer: D

Question No. 3

A layer 2 aggregation deployed via IEEE 802.1D has many nodes on a single link A DHCP version 6 server cannot recognize how the clients are attached to a network, Which solution provides a client identification to the DHCPv6 in this scenario?

Answer: A

Question No. 4

Refer to the exhibit.

The exhibit illustrates the exchange of VPN route and label information between MPLS VPN inter-AS. The exhibit also shows ASBRs exchanging VPN-IPv4 addresses.

Which command is needed to change the next-hop address when ASBR2 is not configured?

Answer: B

Figure 11-3 illustrates the exchange of VPN route and label information between autonomous systems. The only difference is that ASBR2 is configured with the redistribute connected command, which propagates the host routes to all PEs. The redistribute connected command is necessary because ASBR2 is not the configured to change the next hop address.

Figure 11-3 Host Routes Propagated to All PEs Between Two Autonomous Systems

http://www.cisco.com/en/US/docs/net_mgmt/ip_solution_center/4.0/mpls/user/guide/11_isc.html

Question No. 5

Which component does NSF rely on to ensure that interfaces remain up during switchover and that lower layer protocol state is maintained?

Answer: A

Question No. 6

Select 3 AVPs (Attribute-Value Pair) which MUST be present in the ICRQ:

Answer: B, C, E

Question No. 7

Which two Any Transport over MPLS (AToM) traffic encapsulations require the use of a control word? (Choose two)

Answer: B, E

AToM Header

The AToM header is 4 bytes (control word). The control word is optional for Ethernet, PPP, HDLC, and cell relay transport types. However, the control word is required for Frame Relay, and ATM AAL5 transport types.

Question No. 8

Which type of AAL does ATM utilize to deliver CBR traffic?

Answer: D

An ATM Adaptation layer 1 or AAL1 is used for transmitting Class A traffic, that is, real-time, constant bit rate, connection oriented traffic (example- uncompressed audio and video). Bits are fed in by the application at constant rate and must be delivered to other end with minimum delay, jitter or overhead. The input is stream of bits without message boundaries. For this traffic, error detection protocols cannot be used since timeouts and retransmission causes delay but the missing cells are reported to the application, that must take its own action to recover from them.

Question No. 9

A network engineer is implementing an MPLS network among devices from different vendors. The devices must be configured with MPLS VPN service and MPLS TE. Based on options provided, which three protocols fulfill all of these requirements? (Choose three.)

Answer: A, B, F

Question No. 10

What is true regarding Autonomous Systems (AS)?

Answer: A

Question No. 11

What will significantly degrade DSL performance, regardless of DSL rate or line length? Select all that apply

Answer: D

Question No. 12

Which three of these statements about the IP service level agreement (SLA) sender are true? (Choose three)

Answer: A, C, E

Question No. 13

Which statement is true about Cisco IOS XR commit command?

Answer: C

Question No. 14

Refer to the exhibit

Refer to the exhibit ACME Enterprise is running DMVPN with spoke-to-spoke communication 2547oDMVPN has been implemented to extend MPLS to all other branches. What is the traffic flow behavior between branches after 2547oDMVPN implementation?

Answer: A

Question No. 15

Which two statements are correct with regard to route distinguisher as defined in RFC 4364 AKA IP-VPN (MPLS-VPN)? (Choose two.)

Answer: A, D

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