Exam Code: 400-101 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: CCIE Routing and Switching (v5.0)
Certification Provider: Cisco
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2017 Apr 400-101 exam prep

Q71. Which BGP feature prevents a router from installing an iBGP learned route in its routing table until the route is validated within the IGP? 

A. confederation 

B. aggregation 

C. advertise-map 

D. synchronization 

Answer:


Q72. DRAG DROP 

Drag and Drop Cisco PFR adjacency types. 

Answer: 


Q73. Which ICMP message type is used to assist path MTU discovery? 

A. destination unreachable 

B. redirect message 

C. source quench 

D. time exceeded 

Answer:


Q74. Which authentication method does OSPFv3 use to secure communication between neighbors? 

A. plaintext 

B. MD5 HMAC 

C. PKI 

D. IPSec 

Answer:

Explanation: 

In order to ensure that OSPFv3 packets are not altered and re-sent to the device, causing the device to behave in a way not desired by its system administrators, OSPFv3 packets must be authenticated. OSPFv3 uses the IPsec secure socket API to add authentication to OSPFv3 packets. This API supports IPv6. OSPFv3 requires the use of IPsec to enable authentication. Crypto images are required to use authentication, because only crypto images include the IPsec API needed for use with OSPFv3. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15-sy/iro-15-sy-book/ip6-route-ospfv3-auth-ipsec.html 


Q75. Which two statements about the assert process in LAN-based PIM are true? (Choose two.) 

A. If the metrics are the same, the router with the lowest advertised routing protocol metric for that route is elected. 

B. If the metrics are the same, the router with the highest IP address on the LAN is elected. 

C. If the metrics are the same, the router with the highest advertised routing protocol metric for that route is elected. 

D. If the metrics are the same, the router with the lowest IP address on the LAN is elected. 

Answer: A,B 


Abreast of the times 400-101 answers:

Q76. DRAG DROP 

Drag and drop the DMVPN command on the left to the corresponding function on the right. 

Answer: 


Q77. Which option describes how a VTPv3 device responds when it detects a VTPv2 device on a trunk port? 

A. It sends VTPv3 packets only. 

B. It sends VTPv2 packets only. 

C. It sends VTPv3 and VTPv2 packets. 

D. It sends a special packet that contains VTPv3 and VTPv2 packet information. 

Answer:

Explanation: 

When a VTP version 3 device on a trunk port receives messages from a VTP version 2 device, the VTP version 3 device sends a scaled-down version of the VLAN database on that particular trunk in a VTP version 2 format. A VTP version 3 device does not send out VTP version 2-formatted packets on a trunk port unless it first receives VTP version 2 packets on that trunk. If the VTP version 3 device does not receive VTP version 2 packets for an interval of time on the trunk port, the VTP version 3 device stops transmitting VTP version 2 packets on that trunk port. Even when a VTP version 3 device detects a VTP version 2 device on a trunk port, the VTP version 3 device continues to send VTP version 3 packets in addition to VTP version 3 device 2 packets, to allow two kinds of neighbors to coexist on the trunk. VTP version 3 sends VTP version 3 and VTP version 2 updates on VTP version 2-detected trunks. 

Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/configuration/guide/book/vtp.html 


Q78. Refer to the exhibit. 

Which three statements about the R1 configuration are true? (Choose three.) 

A. The virtual circuit identifier is 1611 and the virtual circuit is down. 

B. The local label for the circuit is 4006. 

C. The targeted LDP session to the remote peer is up. 

D. The local label for the circuit is 1611. 

E. The virtual circuit identifier is 4006 and the virtual circuit is down. 

F. The circuit is using MPLS VC type 4. 

Answer: A,B,C 

Explanation: 

The number after the vc is the identifier, which is 1611 in this case. Here, the VC status is shown as down. 

As shown, the MPLS VC labels: local 4006, remote unassigned shows the local label used is 4006. 

The targeted LDP session is up as verified by the “Signalling protocol: LDP, peer 172.16.12.70 up” statement in the output. 


Q79. Which Cisco IOS VPN technology leverages IPsec, mGRE, dynamic routing protocol, NHRP, and 

Cisco Express Forwarding? 

A. FlexVPN 

B. DMVPN 

C. GETVPN 

D. Cisco Easy VPN 

Answer:


Q80. Which two options are differences between TACACS+ and RADIUS using AAA? (Choose two.) 

A. Only TACACS+ limits the protocols that are supported. 

B. Only RADIUS combines accounting and authentication. 

C. Only TACACS+ uses TCP. 

D. Only RADIUS combines authorization and accounting. 

E. Only RADIUS encrypts the password in packets from the client to the server. But leaves the body of the message unencrypted. 

Answer: C,E