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  • Exam Number/Code 400-101
  • Product Name CCIE Routing and Switching (v5.0)
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Exam Code: 400-101 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: CCIE Routing and Switching (v5.0)
Certification Provider: Cisco
Free Today! Guaranteed Training- Pass 400-101 Exam.

2017 Mar 400-101 free draindumps

Q241. Which BGP feature allows a router to maintain its current BGP configuration while it advertises a different AS number to new connections? 

A. local-AS 

B. next-hop-self 

C. allow-AS in 

D. soft reset 

Answer:

Explanation: 

The local-AS feature allows a router to appear to be a member of a second autonomous system (AS), in addition to its real AS. This feature can only be used for true eBGP peers. The local-AS feature is useful if ISP-A purchases ISP-B, but ISP-B's customers do not want to modify any peering arrangements or configurations. The local-AS feature allows routers in ISP-B to become members of ISP-A's AS. At the same time, these routers appear to their customers to retain their ISP-B AS number. 

Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13761-39.html 


Q242. Refer to the exhibit. 

The spokes of the DMVPN with the given configuration are having QoS issues. 

Which two actions can you take to resolve the problem? (Choose two.) 

A. Configure qos pre-classify on the tunnel interface. 

B. Configure an NHRP group on the tunnel interface and associate it to a QoS policy. 

C. Modify the configuration of the IPsec policy to accept QoS policies. 

D. Manually configure a QoS policy on the serial interface. 

E. Configure the bandwidth statement on the tunnel interface. 

F. Configure the bandwidth statement on the serial interface. 

Answer: A,B 

Explanation: 

It is possible to classify based on information that is encrypted, which is needed in this example. You can use an access-list, configured to match the private subnet behind the remote spoke. The qos pre-classify command is used on the tunnel interface, and is required because the traffic is classified by a parameter that is encrypted as the traffic leaves the physical outbound interface. L4 information from the IP data packet can also classify traffic destined to the same private subnet. The “nhrp map group group-name service-policy output parent-policy-name” command adds the NHRP group to the QoS policy map on the hub. 


Q243. DRAG DROP 

Drag each IPv6 extension header on the left to its corresponding description on the right. 

Answer: 


Q244. Which two statements about SoO checking in EIGRP OTP deployments are true? (Choose two). 

A. During the import process, the SoO value in BGP is checked against the SoO value of the site map. 

B. During the reception of an EIGRP update, the SoO value in the EIGRP update is checked against the SoO value of the site map on the ingress interface. 

C. At the ingress of the PE/CE link, the SoO in the EIGRP update is checked against the SoO within the PE/CE routing protocol. 

D. At the egress of the PE/CE link, the SoO is checked against the SoO within the PE/CE routing protocol. 

E. The SoO is checked at the ingress of the backdoor link. 

F. The SoO is checked at the egress of the backdoor link. 

Answer: A,B 

Explanation: 

. SoO checking: 

– During the import process the SoO value in BGP update is checked against the SoO value of the site-map attached to VRF interface. The update is propagated to CE only if there is no match (this check is done regardless of protocol used on PE/CE link). 

– At reception of EIGRP update, the SoO value in the EIGRP update is checked against the SoO value of site-map attached to the incoming interface. This update is accepted only if there is no match (this check can optionally be done on backdoor router). 

Reference: http://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/ip-routing/whitepaper_C11-730404.html 


Q245. 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. 


Leading 400-101 exam answers:

Q246. Where is multicast traffic sent, when it is originated from a spoke site in a DMVPN phase 2 cloud? 

A. spoke-spoke 

B. nowhere, because multicast does not work over DMVPN 

C. spoke-spoke and spoke-hub 

D. spoke-hub 

Answer:

Explanation: 

Spokes map multicasts to the static NBMA IP address of the hub, but hub maps multicast packets to the “dynamic” mappings – that is, the hub replicates multicast packets to all spokes registered via NHRP, so multicast traffic is sent to the hub from a spoke instead of to the other spokes directly. 


Q247. Which is the way to enable the control word in an L2 VPN dynamic pseudowire connection on router R1? 

A. R1(config)# pseudowire-class cw-enable 

R1(config-pw-class)# encapsulation mpls 

R1(config-pw-class)# set control-word 

B. R1(config)# pseudowire-class cw-enable 

R1(config-pw-class)# encapsulation mpls 

R1(config-pw-class)# enable control-word 

C. R1(config)# pseudowire-class cw-enable 

R1(config-pw-class)# encapsulation mpls 

R1(config-pw-class)# default control-word 

D. R1(config)# pseudowire-class cw-enable 

R1(config-pw-class)# encapsulation mpls 

R1(config-pw-class)# control-word 

Answer:

Explanation: 

The following example shows how to enable the control word in an AToM dynamic pseudowire connection: 

Device(config)# pseudowire-class cw-enable 

Device(config-pw-class)# encapsulation mpls 

Device(config-pw-class)# control-word 

Device(config-pw-class)# exit 

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mpls/command/mp-cr-book/mp-a1.html 


Q248. When deploying redundant route reflectors in BGP, which attribute can you configure on the route reflector to allow routes to be identified as belonging to the same group? 

A. ROUTER_ID 

B. CLUSTER_ID 

C. ORIGINATOR_ID 

D. PEER_GROUP 

Answer:

Explanation: 

Together, a route reflector and its clients form a cluster. When a single route reflector is deployed in a cluster, the cluster is identified by the router ID of the route reflector. The bgp cluster-id command is used to assign a cluster ID to a route reflector when the cluster has one or more route reflectors. Multiple route reflectors are deployed in a cluster to increase redundancy and avoid a single point of failure. When multiple route reflectors are configured in a cluster, the same cluster ID is assigned to all route reflectors. This allows all route reflectors in the cluster to recognize updates from peers in the same cluster and reduces the number of updates that need to be stored in BGP routing tables. 

Reference: http://ieoc.com/forums/t/5326.aspx 


Q249. Refer to the exhibit. 

Which two configuration changes enable you to log in to the router? (Choose two.) 

A. Configure a user name and password on the device. 

B. Modify the default login authentication group to use the terminal line password. 

C. Remove the terminal line password on the console line. 

D. Modify the terminal lines to include transport input none. 

E. Configure the terminal lines to use the local user database. 

Answer: A,B 


Q250. Refer to the exhibit. 

Which option is the most likely explanation of the duplicate address message logged? 

A. HSRP misconfiguration 

B. a PC with IP of 10.10.1.1 

C. spanning-tree-loop 

D. a hardware problem 

Answer:


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