Free 400-201 Questions for Cisco 400-201 Exam

Question #1

A service provider has a requirement to prevent and prevent spoofing attacks by verifying the reachability of the sources address in a packet that is forwarded into its network. Which method must be the service provider use?

A. CoPP

B. iACL

C. RTBH

D. uRPF

Discussion 0

Correct Answer: D Vote an answer

Question #2

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

A. SSO

B. LFA

C. IP FRR

D. BFD

Discussion 0

Correct Answer: A Vote an answer

Question #3

Which option is the ATM Cell Relay feature that enhances throughtput and uses bandwidth more efficiently?

A. EXP marking match QoS LLD PHB

B. RSVP bandwidth reservation

C. cell packing

D. preferred-interface

E. MPLS experimental bit

Discussion 0

Correct Answer: C Vote an answer

Question #4

Which are the three mandatory BGP attributes? (Choose three.)

A. origin

B. communities

C. local preference

D. next hop

E. AS path

F. MED value

Discussion 0

Correct Answer: A,D,E Vote an answer

Question #5

Which of the following descriptions about uRPF loose mode is correct? (Choose two).

A. If a packet fails the uRPF loose mode check, the packet is then dropped

B. It is typically used on multipoint interfaces or on routers where asymmetrical routing is used (packets are received on one interface but the return path is not on the same interface); loose mode verifies a source address by looking in forwarding information base(FIB).

C. If a packet fails the uRPF loose mode check, the packet is then transmitted and creates a log message

D. It is typically used on point-to-point interfaces where the same interface is used for both directions of packet flows; if the source address has a return route in the FIB table, it is then checked against the adjacency table to ensure the same interface receiving the packet is the same interface used for the return path

Discussion 0

Correct Answer: A,B Vote an answer

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Question #6

What are three advantages of PPPoA implementation? (Choose three.)

A. If a single IP address is provided to the CPE, and NAT or PAT is implemented, certain applications such as IPTV, which embed IP information in the payload, will not work.
Additionally, if an IP subnet feature is used, an IP address also has to be reserved for the CPE.

B. Only a single session per CPE on one virtual channel (VC). The username and password are configured on the CPE, so all users behind the CPE for that particular VC can access only one set of services. Users cannot select different sets of services, although using multiple VCs and establishing different PPP sessions on different VCs is possible.

C. The NSP can oversubscribe by deploying idle and session timeouts using an industry standard RADIUS server for each subscriber.

D. NAP and NSP provide secure access to corporate gateways without managing end-to- end PVCs. NAP and NSP use Layer 3 routing, Layer 2 Forwarding, or Layer 2 Tunneling Protocol tunnels. Hence, they can scale their business models for selling wholesale service.

E. Cisco Service Selection Gateway is not compatible with PPPoA.

F. PPPoA can use the features on the SSG.

Discussion 0

Correct Answer: C,D,F Vote an answer

Question #7

In Ethernet Aggregation application which option is needed when the U-PE connects to an N-PE and broadband remote access servers?

A. VPLS

B. E1

C. Wire Service

D. Ethernet Multipoint Service (EMS)

Discussion 0

Correct Answer: D Vote an answer

Question #8

Which two statements about Layer 3 MPLS VPN are true? (Choose two.)

A. VPNv4 address is the combination of the RT and customer IPv4 prefix. These VPNv4 prefixes are passed in MP-BGP.

B. Multiprotocol Border Gateway Protocol is run between PE and CE routers to exchange customer prefixes in a VPNv4 format.

C. The virtual routing and forwarding table is separate from the global routing table that exists on PE routers.
Routes are injected into the VRF from the CE-PE routing protocols for that VRF and any MP-BGP announcements that match the defined VRF RTs.

D. A customer edge router peers at Layer 3 to the provider edge. The PE-CE interface runs either a dynamic routing protocol (eBGP, RIPv2, EIGRP, OSPF) or a static routing protocol (Static, Connected).

Discussion 0

Correct Answer: C,D Vote an answer

Question #9

Which two statements about 6RD are true? (Choose two.)

A. Packets between 6RD customer edge devices in the same 6RD domain do not need to traverse the 6RD border relay.

B. Packets received from a 6RD domain can easily be identified as such on the IPv6 Internet.

C. The 6RD customer edge device forwards all packets to the 6RD border relay.

D. The entry point into the local 6RD domain is deterministic.

E. The 6RD customer edge device can forward packets destined to other 6RD customer edge devices outside the local 6RD domain without traversing the 6RD border relay.

Discussion 0

Correct Answer: A,D Vote an answer

Question #10

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

A. The VPNv4 address consists of an RT and an IPv4 address.

B. The VPNv4 address is 128 bits long with a 64-bit long subnet mask.

C. The VPNv4 address consists of an RD and an IPv4 address.

D. The VPNv4 address is 96 bits long with a 64-bit long subnet mask.

E. The VPNv4 address is 96 bits long with a 32-bit long subnet mask

F. The VPNv4 address is 128 bits long with a 128-bit long subnet mask

Discussion 0

Correct Answer: C,E Vote an answer

Free 400-201 Questions for Cisco CCIE Service Provider Written 400-201 Exam as PDF & Practice Test Engine

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