Ucertify offers free demo for 400-201 exam. "CCIE SP Written v4.0", also known as 400-201 exam, is a Cisco Certification. This set of posts, Passing the Cisco 400-201 exam, will help you answer those questions. The 400-201 Questions & Answers covers all the knowledge points of the real exam. 100% real Cisco 400-201 exams and revised by experts!
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Q1. Which information is carried in the OSPFv3 intra-area Prefix LSA?
A. All link-local addresses
B. All IPv6 prefix and topology information that OSPFv2 included in Router LSA and Network LSA
C. List of options associated with the link to all other routers attached to the link
D. All prefix-specific information that OSPFv2 included in Router LSA and Network LSA
Answer: D
Explanation:
OSPFv3's new LSA, the Intra-area Prefix LSA (type 9), handles intra-area network information that was previously included in OSPFv2 type 2 LSAs. It is used in order to advertise one or more IPv6 prefixes. The prefixes are associated with router segment, stub network segment or transit network segment. Intra-area prefix LSAs (type 9) & Inter-Area-Prefix-LSA (type 3) carry all IPv6 prefix information, which, in IPv4, is included in router LSAs and network LSAs.
Q2. In an end-to-end Layer 2 service, which technology provides the capability to detect, verify, isolate, and report faults across a provider network?
A. carrier detect
B. UDLD
C. BFD
D. CFM
Answer: D
Q3. An engineer wants to configure MPLS TE Fast Reroute with link protection on five routers. Which methodology can reduce configuration on the point of the local repair router and successfully complete the task?
A. Configure a backup tunnel on the PLR.
B. Enable the autotunnel backup feature.
C. Configure a backup tunnel on the tunnel head end router.
D. Enable the autotunnel primary feature.
Answer: B
Explanation: http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-2/mpls/configuration/guide/b_mpls_cg42crs/b_mpls_cg42crs_chapter_0100.html#concept_ F19BEEEFC831436AAC9291A87F9B34E5
Q4. Refer to the exhibit.
ABC and XYZ MPLS VPN customers are accruing Internet access. Both CEs are sending traffic to the Internet. Which statement about their connectivity is true?
A. Both CEs will have connectivity.
B. Only CE-XYZ will have connectivity.
C. Neither CEs will have connectivity, as both CEs are using the same NATed subnet.
D. Only CE-ABC will have connectivity.
E. Neither CEs will have connectivity, as IAR does not have route back to the NATed subnet.
Answer: D
Q5. MPLS Service Providers use Route Distinguishers and Route Targets as methods to control routing for customer VRFs. Which two statements are true about Route Distinguishers and Route Targets? (Choose two.)
A. Route Targets are values that are used by a PE router to uniquely identify a VRF within its local MP-BGP VPNv4 table.
B. Route Distinguishers are used by PE routers by exporting and importing routes into a local VRF.
C. Route Targets are used by PE routers to define how to import and export prefixes into a local VRF database.
D. Route Targets are extended communities that are used by MP-BGP to identify routes as they are advertised to neighbor PE routers.
E. Route Distinguishers are values that are used by a PE router to uniquely identify a VRF within its local MP-BGP VPNv4 table.
Answer: C,E
Q6. In a PE-CE scenario using OSPF as the routing protocol, a down-bit set can be advertised in which OSPF LSA type?
A. type 1 LSA
B. type 2 LSA
C. type 3 LSA
D. type 5 LSA
E. type 7 LSA
Answer: C
Q7. Refer to the exhibit.
PIM sparse mode is implemented in the network RPF succeeds under which condition?
A. The RPF check succeeds for the next hop whose router ID is the highest.
B. The RPF check succeeds for the highest DR priority for the PIM router.
C. The RPF check succeeds for both PIM neighbors, and traffic load-balances across both neighbors.
D. The RPF check succeeds for the highest interface IP address for the PIM router.
Answer: D
Q8. A network engineer is designing the BGP architecture with a requirement of preventing the AS 65001 from becoming a Transit AS path, using the following configuration:
router bgp 65000
neighbor 10.0.0.1 route-map BGP-ROUTE-POLICY in
The goal is to prevent routes learned from 10.0.0.1 from being advertised to any other eBGP peering in the AS 65000. What command should be used within the route map to achieve this goal while keeping existing route policies in place?
A. set community no-export additive
B. set community no-advertise
C. set community no-advertise additive
D. set community no-export
Answer: C
Explanation:
Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/26634-bgp-toc.html
Q9. Refer to the exhibit.
An ISP engineer has been asked to identity a method to protect the PE and to control the number of BGP prefixes learned from his customers. The BGP session should be dropped if the PE router receives more than 1000 BGP prefixes. A syslog message should be generated when the number of BGP prefixes learned from CE exceeds 850.
Which Cisco IOS command should the engineer apply on PE routers?
A. neighbor 10.1.1.2 maximum-prefix 1000 85
B. neighbor 10.1.1.2 maximum-prefix 1000 850
C. neighbor 10.1.1.2 maximum-prefix 1000 85 warning-only
D. neighbor 10.1.1.2 maximum-prefix 1000 850 warning-only
Answer: A
Q10. A telecom company offers ISPs the ability to resell dynamic IP broadband services over its local loops, but it does not allow the resellers to install broadband network gateways. If an ISP wants to become a reseller but is unable to use NHRP, which tunneling protocol should be implemented?
A. IP in IP
B. IPsec
C. L2TP
D. GRE
Answer: C
Explanation:
However, while OpenVPN can not be used with VoIP, L2TP can be used for VoIP. Only use this if OpenVPN is not available and you are in need of very high security/encryption.