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Q231. Which two statements about route summarization are true? (Choose two.)
A. RIP, IGRP, and EIGRP can automatically summarize routing information at network address boundaries.
B. EIGRP can automatically summarize external routes.
C. The area range command can aggregate addresses on the ASBR.
D. The summary-address command under the router process configures manual summarization on RIPv2 devices.
E. The ip classless command enables classful protocols to select a default route to an unknown subnet on a network with other known subnets.
Q232. 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
D. a hardware problem
Q233. 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.
The RSTP does not have a separate topology change notification (TCN) BPDU. It uses the topology change (TC) flag to show the topology changes.
Q234. For which two conditions is Cisco Express Forwarding recursion disabled by default when the BGP Prefix Independent Convergence functionality is enabled? (Choose two.)
A. next hops learned with a /24 mask
B. next hops learned with any mask shorter than /32
C. next hops learned with a /32 mask
D. next hops that are directly connected
Recursion is the ability to find the next longest matching path when the primary path goes down. When the BGP PIC feature is not installed, and if the next hop to a prefix fails, Cisco Express Forwarding finds the next path to reach the prefix by recursing through the FIB to find the next longest matching path to the prefix. This is useful if the next hop is multiple
hops away and there is more than one way of reaching the next hop.
However, with the BGP PIC feature, you may want to disable Cisco Express Forwarding recursion for the following reasons:
. Recursion slows down convergence when Cisco Express Forwarding searches all the FIB entries.
. BGP PIC Edge already precomputes an alternate path, thus eliminating the need for Cisco Express Forwarding recursion.
When the BGP PIC functionality is enabled, Cisco Express Forwarding recursion is disabled by default for two conditions:
. For next hops learned with a /32 network mask (host routes)
. For next hops that are directly connected
For all other cases, Cisco Express Forwarding recursion is enabled.
Q235. Which statement about BGP and diverse path advertisement is true?
A. The BGP best-path selection must be disabled.
B. The BGP best-path selection algorithm has been changed to always ignore the IGP metric.
C. The BGP best-path selection algorithm has been changed so that two BGP paths can be flagged as best in the BGP table.
D. The BGP best-path selection algorithm has not been changed.
E. The BGP best-path selection is disabled for BGP routes for which the feature is enabled.
The BGP Diverse Path Using a Diverse-Path Route Reflector feature allows BGP to distribute an alternative path other than the best path between BGP speakers when route reflectors are deployed. This additional path is added to the best-path, and the best path algorithm still remains unchanged.
Q236. What are three benefits of deploying NAT with ALG? (Choose three.)
A. the use of dynamic ephemeral ports through a firewall
B. the synchronization of translations between multiple streams of data
C. the use of deep packet inspection
D. the use of static ephemeral ports through a firewall
E. the conversion of session layer addresses from the application payload to outside global addresses
F. NAT traversal to support asymmetric data sessions
Q237. Which three actions are required when configuring NAT-PT? (Choose three.)
A. Enable NAT-PT globally.
B. Specify an IPv4-to-IPv6 translation.
C. Specify an IPv6-to-IPv4 translation.
D. Specify a ::/96 prefix that will map to an IPv4 address.
E. Specify a ::/48 prefix that will map to a MAC address.
F. Specify a ::/32 prefix that will map to an IPv6 address.
The detailed steps on configuring NAY-PT is found at the reference link below:
Reference: http://www.cisco.com/c/en/us/td/docs/ios/ipv6/configuration/guide/12_4t/ipv6_12_4t_book/i p6-nat_trnsln.html
Q238. Refer to the exhibit.
Which two statements are true regarding prefix 10.1.0.0/24? (Choose two.)
A. The prefix is in policy, and Cisco PfR rerouted the traffic via 10.4.5.3 Et0/1 because of an OOP event.
B. Cisco PfR is monitoring the prefix via passive NetFlow mode only.
C. Cisco PfR is monitoring the prefix via active, fast, or active throughput IP SLA probe mode only.
D. The prefix is in policy, and Cisco PfR did not reroute the traffic via 10.4.5.3 Et0/1 because the traffic was previously in policy.
E. Cisco PfR is monitoring the prefix via mode monitor, which provides both NetFlow and IP SLA measurements.
Q239. By default, how does a GET VPN group member router handle traffic when it is unable to register to a key server?
A. All traffic is queued until registration is successful or the queue is full.
B. All traffic is forwarded through the router unencrypted.
C. All traffic is forwarded through the router encrypted.
D. All traffic through the router is dropped.
In the basic GETVPN configuration, the traffic passing through group members will be sent in clear until it registers with the Key Server. This is because the crypto ACL is configured on the KS and GM will get that information only after the registration is successful. This means for a short period of time the traffic can go out unencrypted after a GM is booted up or the existing GETVPN session is cleared manually. This mode is called “fail open” and it is the default behavior. This behavior can be turned off by configuring “Fail Close” mode on the GMs.
Q240. Refer to the exhibit.
ASN 64523 has a multihomed BGP setup to ISP A and ISP B. Which BGP attribute can you set to allow traffic that originates in ASN 64523 to exit the ASN through ISP B?
D. multi-exit discriminator
MED is an optional nontransitive attribute. MED is a hint to external neighbors about the preferred path into an autonomous system (AS) that has multiple entry points. The MED is also known as the external metric of a route. A lower MED value is preferred over a higher value. Example at reference link below:
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