400-101 Guide

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  • Cisco
  • Exam Number/Code 400-101
  • Product Name CCIE Routing and Switching (v5.0)
  • Questions and Answers
  • 911 Q&As
  • Last Updated
  • Jun 18,2018
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2017 Apr 400-101 brain dumps

Q451. RIPv2 is enabled on a router interface. The "neighbor" command is also configured with a specific IP address. Which statement describes the effect of this configuration? 

A. RIP stops sending multicast packets on that interface. 

B. RIP starts sending only unicast packets on that interface. 

C. RIP starts ignoring multicast packets on that interface. 

D. RIP starts sending unicast packets to the specified neighbor, in addition to multicast packets. 

Answer:


Q452. Refer to the exhibit. 

Which BGP feature allows R1 to send R2 a list of prefixes that R2 is prevented from advertising to R1? 

A. route refresh 

B. Prefix-Based Outbound Route Filtering 

C. distribute lists 

D. prefix lists 

Answer:


Q453. Refer to the exhibit. 

Which configuration can you implement on PE-1 to allow CE-1 to receive delegated IPv6 prefixes? 

A) 

B) 

C) 

D) 

E) 

A. Exhibit A 

B. Exhibit B 

C. Exhibit C 

D. Exhibit D 

E. Exhibit E 

Answer:


Q454. The OSPF database of a router shows LSA types 1, 2, 3 and 7 only. Which type of area is this router connected to? 

A. backbone area 

B. totally stubby area 

C. stub area 

D. not-so-stubby area 

Answer:


Q455. Refer to the exhibit. 

How can the EIGRP hello and hold time for Gig0/0 be changed to 5 and 15? 

A. No action is required, since Gig0/0 is not listed with a nondefault hello and hold time. 

B. Add the commands ip hello-interval eigrp 1 5 and ip hold-time eigrp 1 15 under interface Gig0/0. 

C. Add the commands hello-interval 5 and hold-time 15 under "af-interface Gig0/0" under the address family. 

D. Add the commands default hello-interval and default hold-time under the af-interface Gig0/0 statement under the address family. 

Answer:

Explanation: 

To configure the hello interval for an interface, use the hello-interval command in interface configuration mode To configure the hold time for an interface, use the hold-time command in interface configuration mode. 

Reference: http://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-1/routing/command/reference/b_routing_cr41crs/b_routing_cr41crs_chapter_010.html#wp2 323069468 


Replace 400-101 actual test:

Q456. For which three routing protocols can Cisco PfR provide direct route control? (Choose three.) 

A. OSPF 

B. IS-IS 

C. BGP 

D. EIGRP 

E. static routing 

F. ODR 

Answer: C,D,E 

Explanation: 

Q. Can you elaborate more on the Parent Route and why it's so important to PfR? 

A. Yes. For any route that PfR modifies or controls (BGP, Static, PIRO, EIGRP, PBR), having a Parent prefix in the routing table eliminates the possibility of a routing loop occurring. This is naturally a good thing to prevent in routed networks. 

Reference: http://docwiki.cisco.com/wiki/Performance_Routing_FAQs#Route_Control 


Q457. What are two reasons to use the ip ospf database filter all out command? (Choose two.) 

A. to maintain a centralized OSPF database on a single master device 

B. to avoid flooding LSAs on low-speed links 

C. to ensure a consistent OSPF database across the network 

D. to selectively filter OSPF routes without disrupting the SPF algorithm 

E. to filter only type 7 LSAs from an OSPF area 

F. to enable OSPF to send triggered updates 

Answer: A,B 


Q458. Refer to the exhibit. 

This is the configuration of the ASBR of area 110.Which option explains why the remote ABR should not translate the type 7 LSA for the prefix 192.168.0.0/16 into a type 5 LSA? 

A. The remote ABR translates all type 7 LSA into type 5 LSA, regardless of any option configured in the ASBR. 

B. The ASBR sets the forwarding address to 0.0.0.0 which instructs the ABR not to translate the LSA into a type 5 LSA. 

C. The ASBR originates a type 7 LSA with age equal to MAXAGE 3600. 

D. The ABR clears the P bit in the header of the type 7 LSA for 192.168.0.0/16. 

Answer:

Explanation: 

When external routing information is imported into an NSSA, LSA Type 7 is generated by the ASBR and it is flooded within that area only. To further distribute the external information, type 7 LSA is translated into type 5 LSA at the NSSA border. The P-bit in LSA Type 7 field indicates whether the type 7 LSA should be translated. This P-bit is automatically set by the NSSA ABR (also the Forwarding Address (FA) is copied from Type 7 LSA). The P-bit is not set only when the NSSA ASBR and NSSA ABR are the same router for the area. If bit P = 0, then the NSSA ABR must not translate this LSA into Type 5. 

The nssa-only keyword instructs the device to instigate Type-7 LSA with cleared P-bit, thereby, preventing LSA translation to Type 5 on NSSA ABR device. 

Note. If a router is attached to another AS and is also an NSSA ABR, it may originate a both a type-5 and a type-7 LSA for the same network. The type-5 LSA will be flooded to the backbone and the type-7 will be flooded into the NSSA. If this is the case, the P-bit must be reset (P=0) in the type-7 LSA so the type-7 LSA isn’t again translated into a type-5 LSA by another NSSA ABR. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15-e/iro-15-e-book/iro-ospfv3-nssa-cfg.html 


Q459. Which three statements about EIGRP wide metrics are true? (Choose three.) 

A. The maximum metric is 65536. 

B. The default delay is 1,000,000 picoseconds. 

C. They allow up to 100 hops. 

D. They allow up to 256 hops. 

E. The default delay is 1,000,000 milliseconds. 

F. The maximum metric is 51200. 

Answer: A,B,C 


Q460. Which protocol uses a proprietary 2-byte Type field for multiple protocol support? 

A. HDLC 

B. PPP 

C. CHAP 

D. PAP 

Answer:


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