Our That experts dedicate to be able to keeping the Cisco Cisco practice questions and answers up-to-date. You should maintain visit Actualtests.com regularly to ensure if there are a few changes in our Cisco 400-201 exam products. As well as download the most recent Cisco 400-201 practice questions timely. You will become well prepared for the Cisco Cisco real exam along with our Cisco Pdf simulation resources.
2021 Apr 400-201 free question
Q51. Which are the two advantages if an ISP chooses a platform that runs Cisco IOS-XR Software instead of Cisco IOS Software? (Choose two.)
A. Cisco IOS XR Software functions as a message-passing operating system.
B. The system's scheduler is priority-based.
C. He context switching is based on Cisco Express Forwarding.
D. VoIP traffic is hardware-processed for real-time response.
E. Communication between client and server is realized by a dedicated mechanism.
Answer: A,B
Q52. Refer to the exhibit. The referenced TE tunnels compete for bandwidth requirements over the limited available bandwidth that is provisioned. Which core MPLS component erases a conflict and provides admission control for any new added TE tunnel?
A. link management
B. link attributes
C. MPLS TE priorities
D. RSVP
Answer: D
Explanation: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/mpls/configuration/guide/mpls_cg/mp_te_RSVP.pdf
Q53. When troubleshooting a DoS attack, a support engineer finds a huge number of packets that are destined to one of the core routers interface IP address. By the time the packets reach this core router, they have a TTL of 0. Based on Cisco platform running IOS 15.3S, which technique is most effective in resolving this problem
A. Configure LPTS.
B. Configure an ACL on the core router interface.
C. Configure CoPP on the core router.
D. Configure policing on PE routers.
E. Configure a receive ACL on the core router.
Answer: C
Q54. Which two flexible service mapping features that are used on the ES40 line card can classify traffic into different service instances, in order to consume fewer VLANs? (Choose two.)
A. CoS
B. DSCP
C. IP precedence
D. MPLS experimental bit
E. ToS
F. EtherType
Answer: A,F
Explanation:
Reference: http://www.cisco.com/c/en/us/td/docs/routers/7600/install_config/ES40_config_guide/es40_ sw_config/es40_chap7.html#pgfId-1500091
Q55. Which are the four main functions of the Cisco IOS XR System Manager? (Choose four)
A. performs system monitoring
B. is the main IOS XR component for device drivers and software installation management
C. starts, restarts, and terminates processes in response to user configuration or RP failover
D. is responsible for the message-passing "bus" for interprocess communication
E. acts as a central repository for all process-related information
F. performs health checks
G. initiates disaster recovery based on the process health
H. invokes a dumper to collect a core dump when a process terminates abnormally
Answer: C,E,G,H
Abreast of the times 400-201 study guide:
Q56. Refer to the exhibit.
When a traceroute is performed from a PC behind R2, the next hop on R1 for IPv4 is 10.0.1.2, and for IPv6 it is 2001:DB8:2:2. What is causing thus behavior?
A. GigabitEthernet2/1 has a Level 1-only adjacency. This causes it to be the preferred path for the IPv6 packets.
B. When SPF ran on R2, it calculated two equal paths to R1. It was a coincidence that than the packets choose different paths.
C. Multitopology is enabled on R2, which causes the IPv6 packets to use a different path than the IPv4 packets.
D. 2001:DB8:2::2 is on a Gigabit Ethernet interface. Because its speed is higher than Fast Ethernet, the IS-IS metric is preferred.
Answer: C
Q57. Which are two major changes SyncE offers over traditional Ethernet to make it suitable for clock distribution? (Choose two.)
A. SyncE introduces the concept of “Boundary Clocks” and “Transparent Clocks” improving network scalability and accuracy of clock synchronization.
B. Industry standard that guarantee interoperability, since granular details, such as specific field values are specified.
C. A mandated clock accuracy of 4.6ppm.
D. The ESMC protocol for clock selection, distribution, management, traceability, and failover.
E. High-priority synchronization packets so it can continually adjust its own oscillator.
Answer: C,D
Explanation: http://www.cisco.com/c/en/us/support/docs/optical/synchronous-optical-network-sonet/23718-timefaq-23718.html
http://cp.literature.agilent.com/litweb/pdf/5990-4386EN.pdf
Q58. An engineer is deploying RTBH. What is necessary routing constraint required for successful implementation?
A. The trigger device must have an iBGP session with all the clusters/route reflectors in the autonomous system.
B. The trigger device must redistribute the static route pointing to a null interface into the IGP process.
C. The no ip reachables command must be issued on the PE router interface under attack.
D. The attacker’s destination IP address must be routed to a null interface.
E. The eBGP sessions need to set the next-hop attribute value to the trigger device loopback interface.
Answer: A
Explanation:
http://www.cisco.com/web/about/security/intelligence/ipv6_rtbh.html Old Dumps Actual Test pg no.52 (520 Q)
Q59. Refer to the exhibit.
A service provider is using the configuration to determine traffic paths based on MPLS EXP markings. Which technology is being implemented?
A. MPLS TE FRR
B. CBTS
C. IP FRR
D. MPLS TE
E. PBTS
F. DS-TE
Answer: B
Q60. Refer to the exhibit .
A network engineer is troubleshooting a packet over SONET connection between Router A and Router B. What is causing the line protocol to be down?
A. The keepalive must be set on both sides
B. The POS CRC must be set on both sides.
C. There is an encapsulation mismatch
D. There is an MTU mismatch.
Answer: C