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2021 Sep ccie dumps 400-101:

Q151. Refer to the exhibit. 


Traffic from CE1 to CE2 is traveling through the core instead of through R1. All the PE routers have a similar configuration, and BGP peering and extended-community meshing are configured correctly. 

Which configuration change routes the traffic through R1? 

A) 

B) 

C) 

D) 

A. Exhibit A 

B. Exhibit B 

C. Exhibit C 

D. Exhibit D 

Answer: A 


Q152. Which two statements are true about RSTP? (Choose two.) 

A. By default, RTSP uses a separate TCN BPDU when interoperating with 802.1D switches. 

B. By default, RTSP does not use a separate TCN BPDU when interoperating with 802.1D switches. 

C. If a designated port receives an inferior BPDU, it immediately triggers a reconfiguration. 

D. By default, RTSP uses the topology change TC flag. 

E. If a port receives a superior BPDU, it immediately replies with its own information, and no reconfiguration is triggered. 

Answer: B,D 

Explanation: 

The RSTP does not have a separate topology change notification (TCN) BPDU. It uses the topology change (TC) flag to show the topology changes. 

Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2950/software/release/12-1_9_ea1/configuration/guide/scg/swmstp.html 


Q153. Which two options are reasons to manipulate the delay metric instead of the bandwidth metric for EIGRP routing? (Choose two.) 

A. Because the delay metric provides better handling for bursty traffic 

B. Because manipulating the bandwidth metric can also affect QoS 

C. Because manipulating the bandwidth affects only a particular path 

D. Because changes to the delay metric are propagated to all neighbors on a segment 

Answer: B,D 

Explanation: 

Using the bandwidth to influence EIGRP paths is discouraged for two reasons: 

. Changing the bandwidth can have impact beyond affecting the EIGRP metrics. For example, quality of service (QoS) also looks at the bandwidth on an interface. 

. EIGRP throttles to use 50 percent of the configured bandwidth. Lowering the bandwidth can cause problems like staving EIGRP neighbors from getting hello packets because of the throttling back. 

Because changes to the delay metric are propagated to all downstream routers, changing the interface delay parameter is the preferred method of influencing path selection 

Reference: http://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/13673-14.html 


Q154. 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 


Q155. DRAG DROP 

Drag and drop the multiprotocol BGP feature on the left to the corresponding description on the right. 


Answer: 



400-101  exam

Leading 400-101 ccie dumps free download:

Q156. Which three options are characteristics of a Type 10 LSA? (Choose three.) 

A. It is an area-local, opaque LSA. 

B. Data is flooded to all routers in the LSA scope. 

C. It is used for traffic-engineering extensions to OSPF. 

D. It is a link-local, opaque LSA. 

E. Data is flooded only to the routers in the LSA scope that understand the data. 

F. It is used for traffic-engineering extensions to LDP. 

Answer: A,B,C 


Q157. Which three protocols support SSM? (Choose three.) 

A. IGMPv2 

B. IGMPv3 

C. IGMP v3lite 

D. URD 

E. CGMP 

F. IGMPv1 

Answer: B,C,D 


Q158. DRAG DROP 

Drag and Drop Cisco PFR adjacency types. 


Answer: 



Q159. DRAG DROP 

Drag and drop the VLAN number on the left to the corresponding default VLAN name on the right. 


Answer: 



Q160. Which two parameters does the Tunnel Mode Auto Selection feature select automatically? (Choose two.) 

A. the tunneling protocol 

B. the transport protocol 

C. the ISAKMP profile 

D. the transform-set 

E. the tunnel peer 

Answer: A,B 

Explanation: 

The Tunnel Mode Auto Selection feature eases the configuration and spares you about knowing the responder’s details. This feature automatically applies the tunneling protocol (GRE or IPsec) and transport protocol (IPv4 or IPv6) on the virtual template as soon as the IKE profile creates the virtual access interface. This feature is useful on dual stack hubs aggregating multivendor remote access, such as Cisco AnyConnect VPN Client, Microsoft Windows7 Client, and so on. 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_vpnips/configuration/xe-3s/sec-sec-for-vpns-w-ipsec-xe-3s-book/sec-ipsec-virt-tunnl.html